Programming the HFG..9(Parameters) ======================================= Step 01 ----------- The RF parameters of the radiotelephone are defined in this step with the following meanings: 1st coding digit: frequency band and oscillator frequency generation 0 = 4m, Fosc = Fr - Fif 1 = 2m, Fosc = Fr - Fif (standard 2m) 2 = 70cm, Fosc = Fr - Fif 3 = 70cm, Fosc = Fr + Fif 4 = 2m, Fosc = Fr + Fif 5 = 4m, Fosc = Fr + Fif (standard 4m) Fosc = oscillator frequency/reception Fr = reception frequency Fif = 1st IF (intermediate frequency) The oscillator frequency generation in the 70 cm unit must be pro- grammed as follows, depending on the frequency range of the 70 cm unit (above or below 440 MHz): Frequency range below 440 MHz above 440 MHz ------------------------------------------------------------------------- Coding '2' at least one Fr >=420 MHz at least one Fr >=455 MHz Coding '3' all Fr < 420 MHz all Fr < 455 MHz 2nd coding digit: channel spacing 0 = 12.5 kHz 1 = 20 kHz 2 = 25 kHz 3rd coding digit: programming version Several programming versions are provided for simplifying programming input and controlling the rotary switch assignment and channel sel- ection. 0 = R1 / 1 channel, single tone call 1 = R1+SR / 1 channel, signalling 2 = R1+SR Scanning / signalling 3 = R5 / 1 channel, one variable single tone call digit 4 = R5 / 5 channels, single tone call * 5 = R5 / 10 channels, single tone call 6 = R5+SR / 1 channel, one variable call digit 7 = R5+SR / 5 channels, channel-dependent signalling * 8 = R5+SR / 10 channels, channel-dependent signalling 9 = R5+SR Scanning / one variable call digit A = C / 16 channels B = C / 99 channels * In the R5 units with 5 channels, the volume can be set with the rotary switch, in all other versions, the volume is either fixed or can be adjusted with a key. 4th coding digit: energy saving mode 0 = not activated 1 = activated When energy saving mode is activated in R1 and R5 units (versions 0, 3, 4, 5), the control processor is switched to an energy saving mode. It then becomes active only about every 40 ms. In this way, the key inter- rogation or the T/R-switching can be delayed, for example. In R1+SR, R5+SR and C units (versons 1, 2, 6-B) no decoding takes place below the squelch threshold if the energy saving mode is activated. 5th-8th coding digits: minimum and maximum channel number (01-99) The smallest settable channel number is entered at the 5th and 6th positions, the largest at the 7th and 8th positions (01-99). Entry must be made - in 99-channel mode (version B) - if scanning is preset as a unit status (version 2+9) - if scanning is selected by key coding (version A+B) A maximum of 16 channels can be set in the 16-channel mode. Transmission and reception frequencies are programmed separately in steps 02-33. All versions except B use the 16-channel mode. A maximum of 99 channels can be set in the 99-channel mode. Transmission and reception frequencies must be programmed for the smallest possible channel frequency in steps 02-03. The frequency is determined by the channel spacing for all greater channel numbers. Fx = Fmin + (CHx - CHmin) x Fchannel spacing Fx = frequency of channel number X Fmin = smallest possible channel frequency CHx = channel number X (>=CHmin, max. 99) CHmin = smallest selected channel number Fchannel spacing = channel spacing from 2nd coding digit If, however, entries have been made in steps 04-33 (channels 2-16), the frequencies entered there are always used. If there is no entry, the frequency is determined according to the above formula. Only version B uses the 99-channel mode. 11.00101 = standard Step 02 - 33 ------------ The transmission and reception frequencies of the channels and the frequency offset of the tone call oscillator are programmed in these steps. 1st coding digit: frequency offset of the tone call oscillator = without frequency offset - = with frequency offset The frequency offset of the tone call oscillator can be used to eliminate any interference on the RF channel, caused by the signalling component. If the frequency offset is entered under the minimum channel number in the 99-channel mode, it applies for all calculated channels. 2nd-8th coding digits: antenna frequency in MHz (xxx.xxxx) The transmission and reception frequencies of channels 1-16 are pro- grammed in these steps. The entries of channel 1 correspond to the min- imum channel number in 99-channel mode. If both entries are missing under a channel number (2-16), the frequencies are determined automatically in 99-channel mode whereas in the 16-channel mode, this channel number is missed out and cannot be set. The transmission and reception frequencies may only be integer multiples of the PLL comparative frequency! Standard comparative frequencies are: 10 kHz at 20 kHz channel spacing 12.5 kHz at 12.5/25 kHz channel spacing Step 34 ------- The scanning operating parameters are programmed in this step. The entries have the following meaning: 1st-3rd coding digit: scanning time per channel (0.10-0.99) sec. 4th coding digit: not used 5th+6th coding digit: dwell time after scanning stop (0.0-9.9) sec. If a carrier or a scanning stop tone is detected on a channel (1st to 3rd coding digit) during the scanning time, the scanner stops and the dwell time begins running. Scanning is aborted if there is a decoding during this time (only decoder codings in block A are accepted in scanning mode. Entries in block B or C do not overrule the entries in block A). Scanning is continued at the end of the dwell time if there is no decoding. The dwell time is between (0.0 and 9.9)s and must be chosen so that a tone sequence is detected with certainty. The dwell time has no function in the absence of a tone or digital call decoder. dwell time > scan tone length (from step 35) + 350ms (5x70ms for ZVEI tone sequence) Following criteria are possible for aborting scanning; they are dependent on the appropriate coding: - carrier - carrier + scanning stop tone - carrier + decoder (code dwell time!) - carrier + scanning stop tone + decoder (code dwell time!) 7th+8th coding digit: transmitter priority channel number (01-99) The unit switches to the transmitter priority channel if a key is pressed during scanning (display 'SC--'), i.e. even if the scanning mode is switched off. If the unit is in the scan stop status (display e.g. 'SC12'), the unit stays on the displayed channel when a key is pressed, i.e. also at the end of the scanning mode (display 'ch12'). All channels between 01 and 99 can be entered as decimal numbers. With call transmission bar activated (step 36/5th coding digit) and with the call key pressed with occupation of the priority channel, the unit switches automatically (without warning signal) to the next free channel and transmits the call there. With PTT transmission bar activated (step 36/4th coding digit) and the PTT key pressed with occupation of the priority channel, an acoustic warning signal is emitted. The unit does not switch to the next free channel. 0..-.... = standard Step 35 ------- A scanning stop tone can be programmed with a tone length in this step. It is prefixed to every call (including the PTT identification) on the encoder side, independently of step 34. If it is to be transmitted without PTT identification every time the PTT key is pressed, a call coding block without content, i.e. without coded call sequences and tele- grammes, must be entered in the key coding for S3. In relation to step 34, programing of the scanning stop tone means an additional criterion for scan stop on the decoder side. 1st coding digit: scanning stop tone (dependent on the frequency series at step 48) Refer to table 1 for the symbol for the scanning stop tone. Key = table (1) of the tone sequence and collective call frequencies There is no automatic repeat tone generation between the scanning stop tone and the first tone of a coded tone sequence. The repeat tone must be coded manually, if desired, at the 1st position of the tone sequence. 2nd coding digit: not used 3rd+4th coding digit: scan tone length (0.0-9.9) sec. The tone length must be adapted to the requirements of the scanning network. (Scanning time 60ms decoding ) (number ) Scan tone length > (per channel + time of the ) x (of scan + 1) (from step 34 scan. stop tone) (channels ) .-.. = standard All input digits must be cleared to deactivate it. Step 36 ------- Control parameters for call selection mode, identification display, trans- mission bar, special operating modes and keyclick are programmed in this step. 1st coding digit: call selection mode in the C unit 0 = standard call selection mode 1 = call selection mode with group call dialling facility '-' 2 = call selection mode with abbreviated dialling '0' 3 = DTMF mode (switch-on state) Only digits '0' to '9' s can be entered in the call dialling display in standard call selection mode. In the call selection mode with group call dialling facility, blank positions in the call dialling display are filled up with the group call character '-' during call release. Previously entered digits are shifted to the left. In the call selection mode with abbreviated dialling, blank positions in the call dialling display are filled up with '0's during call release. No leading zeros need to be entered. See also 'Programming of an analog encoder call' and 'Programming' of a digital encoder call' in the chapter 'General' at the end of the help text ( key). When the DTMF mode is coded, the unit is switched to this mode immediately after switching on and after every channel change. An appropriate display appears in the call dialling display. The corresponding DTMF tone is transmitted directly every time one of the keys 0-9, * and # is pressed. There is no call dialling facility. Analog or digital call sequences are possible as a permanent call on the other keys. If call dialling or channel-dependent DTMF mode is desired, DTMF mode must be programmed as a key coding. Coding 0-3 should then be selected here with the desired call dialling. See Key assignment for further details (steps 103-113). 2nd coding digit: identification display primary/secondary telegramme 0 = secondary telegramme after call decoding (DigiS standard coding) 1 = primary telegramme after call decoding (e.g. ZVEI extended 3+3) 2 = secondary telegramme without call decoding 3 = primary telegramme without call decoding (e.g. PTT identification) See identification display filter for further details (step 56) 3rd coding digit: transmission with PTT only after call or call transmission (0 = no, 1 = yes) A transmission barred tone is emitted if the S3 key (PTT) is pressed despite activated bar. Closing of the loudspeaker with monitor key, automatic loudspeaker cut- off, disconnect call or switching off the unit reactivates the bar (not by 3-tone reset). 4th coding digit: transmission bar (PTT) with channel busy (0= no, 1= yes) A transmission barred tone is emitted if the S3 key (PTT) is pressed despite the bar being activated. 5th coding digit: transmission barred (call) with channel busy (0 = no, 1 = yes) A transmission barred tone is emitted if a call key is pressed despite the bar being activated. 6th coding digit: transmitter keying between primary, secondary and tertiary tone sequences (0 = yes, 1 = no) This coding digit is ignored if only digital telegrammes are coded as primary and secondary call. The transmitter always remains keyed for 0.02 seconds between the digital telegrammes. If tone sequences or a mixture with tone sequences are coded, the pause times of steps 50 and 51 are taken into consideration. If transmitter keying is coded, the transmitter lead is not taken into account. The pause time is the time of the unmodulated transmitter keying between the individual call modulations. The transmitter lead from step 38 is still taken into account even if no transmitter keying is coded. The pause time is the time without trans- mitter keying. See also step 38 (transmitter lead time). 7th coding digit: special operating modes Disabling or enabling of the special operating modes must be coded accor- ding to the following table (no = disable, yes = enable) Program. mode Maint. Acoustic (only in C unit) mode muting mode ------------------------------------------------ 0 = no no no 1 = no no yes 2 = no yes no 3 = no yes yes 4 = yes no no 5 = yes no yes 6 = yes yes no 7 = yes yes yes The programming mode is activated (only in the C unit) by pressing the S3 key together with a numeric key during switching on the unit (digit 1 = self programming, digit 2 = external programming). The maintenance mode is activated by pressing the S2 key together with the S3 key during switching on the unit. A special key coding for all channels is activated in the maintenance mode: S1= no function, S2= monitoring alternately ON/OFF, S3=transmission alternately ON/OFF Acoustic signalling is muted by pressing the S2 key during switching on of the unit. 8th coding digit: keyclick for 16-key keyboard (0 = no, 1 = yes) 00000071 = standard Step 37 ------- The maximum transmission time is determined in this step. The desired time is entered right-aligned with a resolution of 0.1 seconds. Transmission time is unlimited if no entry is made. Step 38 ------- The transmitter lead time between keying up the transmitter and the start of the call can be entered in this step. This programmable lead time therefore contains the keying up time of the transmitter of at present approx. 20 ms, so that the permissible codable range is between 0.02 and 0.99 seconds. The standard value is 0.12 s (the ZVEI recommendation for tone sequences requires at least 100 ms unmodulated carrier lead). At least 50 ms are recommended for digital call. Other times (e.g. key recognition times, oscillator setting times, etc.) are not contained in the transmitter lead time. 0.12 s = standard Step 39 ------- The acknowledgement reaction time between recognition of a selective call (related to the primary call in the case of multiple calls) and keying up the transmitter are determined here. The decoding time is not included! The time can be programmed anywhere between 0.00 and 9.99 seconds. The following are recommended: for tone sequence and ZVEI digital 0.10 seconds (A reaction time of 150 ms is required for ZVEI digital); the decoding time for ZVEI digital is approx. 50 ms; approx. 10 ms for tone sequence) for digital call with identification transmission in the secondary call and activated identification display, the time must be prolonged 0.20 seconds (the decoding time is approx. 50 ms + approx. 75 ms for secondary telegramme + approx. 75 ms PLL switching time) Make sure the time is prolonged accordingly in the case of multiple calls! See also step 52 (call repetitions) and steps 114-149 '2nd call repetition'. 0.10 s = standard Step 40 ------- The acknowledgement channel, digital call system and acknowledgement dependence of the loudspeaker opening are programmed in this step. 1st+2nd coding digit: acknowledgement channel (01-99), 00 = not programmed An acknowledgement channel can be programmed under the first two coding digits which causes acknowledgement to take place after a selective call first on the set channel and then on the acknowledgement channel (then the unit switches back to the set channel). If both channels are identical or '00' has been programmed, acknowledgement always takes place only once on the set channel providing acknowledgement has been programmed. 3rd coding digit: digital call system 0 = ZVEI standard with 6 call digits (lozenge, manufacturer code, call number) 1 = ZVEI extension with 3 identification digits and 3 call digits See 'Programming of a Digital Encoder Call' in the chapter 'General' at the end of the help text (key ). 4th coding digit: loudspeaker opening in digital acknowledgement decoding 0 = independent of acknowledgement decoding 1 = dependent on acknowledgement decoding If 'Loudspeaker opening independent of digital acknowledgement decoding' is coded, the loudspeaker opens after every call transmission. If 'Loudspeaker opening dependent on digital acknowledgement decoding' is coded, the loudspeaker does not open in the case of call transmission until the received acknowledgement has been decoded. In the case of call transmission with tone sequence and in mixed radio networks (digital call + tone sequence), there is never any acknowledgement decoding; the loudspeaker always opens after call transmission. 0001 = standard Step 41 ------- Not used in HFG9 programming. Step 42 ------- The monitor and loudspeaker control functions are determined in this step. 1st coding digit: 3-tone reset by tone sequence decoder (0 = no, 1 = yes) Loudspeaker cut off if the first 3 tones of a received tone sequence match the programmed analog selective call decoder. 2nd coding digit: loudspeaker opens only after incoming call (0 = no, 1 = yes) If bar is activated, the loudspeaker remains closed after transmitting with the PTT key (S3 key). An error alarm tone or monitoring barred tone is emitted if the loudspeaker is to be opened or monitored with an appropriately coded monitor key. Closing of the loudspeaker with monitor key, automatic loudspeaker cut-off, disconnect call or switching off the unit reactivates the bar (not by 3-tone reset). 3rd coding digit: autom. loudspeaker cut-off time dependent on channel occupation (0 = no, 1 = yes, time is halted if channel is busy) 4th coding digit: loudspeaker state after switching on the unit (0 = off, 1 = on) Without decoder, the 'on' state of the loudspeaker should always be coded, i.e. the loudspeaker is enabled by the tone call, it only depends on the squelch now. 5th coding digit: monitor function 0 = monitor only 1 = cut-off only 2 = alternate ON-OFF 3 = as 1 + call if pressed longer (call coding 8) 4 = as 2 + call if pressed longer (call coding 8) 5 = as 1 + monitor if pressed longer 6 = as 2 + monitor if pressed longer Monitoring is possible for as long as the key is pressed (if coded); the squelch and CTCSS decoder are ineffective. Coding 0 (monitor only) prevents any loudspeaker blocking in the R1+SR, R5+SR and C units (versions 1+2, 6-B) simultaneously (e.g. by 1st, 2nd and 4th coding digit, autom. loudspeaker cut-off, disconnect call, silent emergency call, etc.), even if no monitor key is programmed. 6th-8th coding digit: volume stage (6th = loud, 7th = medium (only in C-unit), 8th = quiet) 4 volume levels: 3 = 0dB (R1/R5: 0dB) 2 = -3dB (R1/R5: -6dB) 1 = -6dB (R5: -12dB, not in the R1 unit) 0 = -12dB (R5: -18dB, not in the R1 unit) Four volume levels can be set altogether in the unit (only 2 in the R1- unit). Allocation of these levels to the loudspeaker stages is programmable. In the C-unit, the stages loud, medium and quiet are allocated to the representation in the display. In R1-, R1+SR-, R5- and R5+SR-units with volume setting by means of a programmable key, rotary switch or switching on with the S1 key pressed (not R1 and R1+SR), the stages loud and quiet are used. In R1- and R1+SR-units without volume setting, the programming of the loud and quiet stages must be identical. Since it is not possible to set the volume on the unit, this setting is valid throughout operation. In R5- und R5+SR-units without volume setting by a rotary switch (versions 3, 5, 6, 8 and 9) the volume can be adjusted by switching on the unit with the S1 key pressed. A tone is generated on actuating the rotary switch which corresponds to the subsequently set volume. The volume switches between the loud and quiet stages in the case of repeated switching on (even if switched on several times with the S1 key pressed). The volume the first time the unit is switched on is always the level of the loud volume stage. Standard: 0000.... 0... = units: R1, R5 (versions 0, 3-5) 3... = units: R1/R5+SR Scanning (versions 2, 9) 4... = units: R1+SR, R5+SR, C (versions 1, 6-8, A, B) .3.2 = unit: R1 (version 0) .310 = unit: C (versions A, B) .3.1 = units: all except R1 and C (versions 1-9) Step 43 ------- The automatic loudspeaker cut-off time is programmed in this step. The desired time is entered right-aligned with a resolution of 0.1 seconds. The time counts from opening of the loudspeaker by pressing the PTT, call or monitor keys and after call decoding and is interrupted when the channel is busy, providing this has been programmed in step 42/3rd coding digit. The scanner starts automatically when the loudspeaker cut-off time runs out providing it is programmed and switched on. There is no automatic loudspeaker cut-off if no entry is made here. Step 44 ------- The acoustic signal functions are determined in this step: 1st coding digit: signalling by collective call decoding 2nd coding digit: signalling by group call decoding (tone sequence+Dig) 3rd coding digit: signalling by selective tone sequence decoder 4th coding digit: signalling by selective digital call decoder 1 5th coding digit: signalling by selective digital call decoder 2 0 = no calling tone 1 = uninterrupted calling tone with 730 ms tone length (Standard: selective call) 2 = intermittent calling tone with 2x370 ms tone length (Standard: group call) 3 = intermittent calling tone with 3x240 ms tone length (Standard: collective call) 32111 = standard Step 45 ------- The encoder side emergency call functions are determined in this step: 1st coding digit: emergency call signalling (0 = normal, 1 = silent emergency call) If 'Silent emergency call'is coded, the loudspeaker remains closed during the reception phase. The unit cannot be called. The LEDs or display remain in the state prior to emergency call release. 2nd coding digit: remote cut-off and loudspeaker release 0 = no 1 = remote cut-off with selective call decoding (tone sequence and digital BAK 6) 2 = remote cut-off with selective call decoding (tone sequence and digital BAK 1 + 6) If 'Silent emergency call'is coded, the loudspeaker can be opened by digital selective call decoding with BAK 1 (coding 1); remote cut-off takes place simultaneously with coding 2. 3rd coding digit: unit can be switched off normally during the emergency call (0 = yes, 1 = no) 4th coding digit: emergency call release 0 = none 1 = by key with call coding 9 2 = by double keypress with call coding 9 + S3 key (PTT key) 3 = by double keypress with call coding 9 + S1 key (top key on the side) 4 = 1 + dead man's switch (call coding 9 additionally on key S4) Call coding 9 must be programmed in the 'Key assignment' step for the key which is to release the emergency call. The emergency call identification should be entered in call coding 9. In double key release, the key with call coding 9 has no single function. The single function of the S1 key (coding 3) is only executed with delay when the key is pressed for longer (approx. 1 s). Transmitter keying takes place immediately on pressing the S3 key (coding 2), the modulation for the emergency call or identification transmission takes place with a delay. In coding 2, call 9 may not be programmed on S3, in coding 3, call 9 may not be programmed on S1. It is also possible to operate a dead man's switch on the accessories socket with coding 4 (fixed on key S4). Call coding 9 must then be programmed additionally for the S4 key in the programming step 'Key assignment'. Emergency call activation even on the s w i t c h e d o f f unit is only possible if the S1 key or a combination of the S1 key and 'Unit cannot be switched off' is coded at the 3rd coding digit. The unit is then switched on on the first channel entered in key assignment F (step 113). The emergency call identification by call coding 9 must also be entered in key assignment F. If an emergency call is released during scanning mode, the emergency call is transmitted on the same channel for PTT or call key actuation during scanning. 5th+6th coding digit: delay time, 00-25 sec., stop by releasing The delay time is the time up to start of the emergency call function. The emergency call release is stopped by releasing the key during the delay time. A delay time of 15 seconds is recommended when using a dead man's switch. 7th+8th coding digit: acoustic pre-warning time, 00-25 s, stop by switching off the unit The acoustic pre-warning time is the time until the emergency call is transmitted. It begins with the end of the delay time. The emergency call release can only be stopped by switching off the unit during the pre-warning time. No pre-warning time for the silent release and a pre-warning time of 10 seconds for audible release are recommended when using a dead man's switch. Emergency call decoding: Emergency call decoding only takes place on receiving a digital call telegramme with operating mode ID (BAK) 'F'. 01100000 = standard Step 46+47 ---------- Not used in HFG9 programming. Step 48 ------- The frequency series for the tone sequence, single and double tone are determined in this step. 1st coding digit: tone sequence and single tone frequency series 0 = ZVEI1 (not suitable for 12.5 kHz channel spacing!) 1 = ZVEI2 2 = CCIR 3 = EIA 4 = EEA 5 = CCIR - 70ms tone duration 2nd coding digit: double tone series according to double tone table 0 = double tone series 1 1 = double tone series 2 2 = double tone series 3 3 = double tone series 4 00 = standard Step 49 ------- The tone length for the single and double tones is determined here. It can be selected in the range from 0.0 - 9.9 seconds. If there is no entry, the tone length depends on how long the key is pressed. The maximum time in R1-, R5+SR- and C-units (versions 1, 2, 6-B) however is limited to 19 seconds. 1.5 s = standard Step 50 Step 51 ------- This step determines the pause time between primary and secondary (step 50) and secondary and tertiary call sequences (step 51). It can be varied between 00 - 0.99 seconds. If 'No transmitter keying' is coded in step 36, 6th digit, a fixed time of 0.15 seconds is added to the pause time coded here. (If the pause time is coded to 0.00 for example, there is still a pause of 0.15 seconds). With coding 'Transmitter keying = yes' and a coded pause time 0.00, tone sequences are tagged directly onto each other so that a tone sequence of up to 15 tones can be programmed. The automatic repeat tone generation also functions correctly in this case. See also step 36, 6th digit. 0.40 s = standard Step 52 ------- The number of repeat calls for the ZVEI digital call can be entered in this step. 1st+2nd coding digit: repeat calls without expected acknowledgement (0-15) BAK 7, B, D and E 3rd coding digit: not used (omitted when programming with C unit) 4th+5th coding digit: repeat calls with expected acknowledgement (0-15) BAK 0, 1, 2, 5, 6, 8, 9, A and C Dependent on the operating mode ID (BAK), i.e. with or without expected acknowledgement, the call repeat cycles can be determined separately (except BAK 3 and 4). A number between 0 and 15 can be programmed whereby these repeat calls are to be understood as a maximum value in the case of expected acknowledgement because interruption takes place as soon as the first acknowledgement is correctly detected. The time from the end of the transmitted primary telegramme to the following repeat call is... - for repeat call without expected acknowledgement approx. 0.16 s (reference: start of telegramme modulation); transmitter remains keyed - for repeat call with expected acknowledgement 0.75 s + acknowledgement reaction time from step 39 (reference: start of transmitter keying) See also step 39 (acknowledgement reaction time) and steps 114-149 '2nd call repetition'. 00-02 = standard 0002 = standard for programming with C unit Step 53+54 ---------- Not used in HFG9 programming. Step 55 ------- The digital call identification repeat time is the interval after which the digital call identification is repeated when the PTT key is kept pressed uninterruptedly. The time must be entered right aligned with a resolution of 0.1 seconds. If no repeat time is programmed, digital identification is only transmitted once at the beginning of a speech phase. See also steps 103-113 'PTT identification coding' Step 56 ----------- With the identification display filter, it can be determined whether, how many and which digits are displayed by the digital identification decoder. The identification display appears immediately in the call number display. Identification displays are always displayed with decimal points to distinguish them from set call numbers. Example: Call number Identification 1 2 3 4 1.2.3.4. The identification decoder displays the primary telegrammes or their secondary telegrammes recognized as correct by the digital call decoders (1 or 2) or displays the primary or secondary telegramme independently of the digital call decoders (see step 36/2nd digit). If the identification decoder is set for the secondary telegramme, the secondary acknowledgement is used for identification decoding on reception of acknowledgement. Identification decoding of the primary acknowledgement takes place if no secondary acknowledgement is received. Which digits (1-8) are to be displayed is determined by programming an 'F' at the desired position. The other digits which are not to be displayed are programmed with the numbers of the telegramme to be displayed. Similarly to in the digital call decoder, the individual digits can also be ignored with the '-' character, i.e. they are not considered in the identification display. Example: display of primary call -------- Primary Secondary Decoder Ident. filter Display ---------------------------------------------------------- 12345678 XXXXXXXX 12345678 123456FF 7.8. 12345678 XXXXXXXX 12345678 123478FF none 12345678 XXXXXXXX 12345678 123F--FF 4.7.8. 12345678 XXXXXXXX 12345699 123F--FF none Example: display of secondary call -------- Primary Secondary Decoder Ident. filter Display ---------------------------------------------------------- 12345678 11112345 12345678 111123FF 4.5. 12345678 11112345 12345678 111144FF none 12345678 11112345 12345678 111F--FF 1.4.5. 12345678 11112345 12345699 111F--FF none The programming symbols are shown in table 4. Key = table (4) for digital call programming Step 57 ------- The digital postal identification serves for identifying the respective radio subscriber. The inverted block synchronisation avoids collisions with normal call numbers. It is always transmitted at the start of every call or when pressing the PTT key after 10 seconds the first time and then repeated every 120 seconds. The subscriber number is determined in Germany by the Post Office authorities and is classified as follows: - Digits 1 and 2: radio interference measuring stations - Digits 3 and 4: service - Digits 5 to 8: network numbers This step is also valid in the case of channel-related coding for all channels. Refer to table 4 for the necessary symbols. Key = table (4) for digital call programming Step 58 ------- The tertiary call is an analog call transmitted after a programmed secondary call. If no analog secondary call has been programmed on a call key no tertiary call is transmitted either. If the pause time (step 51) is programmed with 0, the tertiary call is tagged on directly to the secondary call. In this case, automatic repeat tone correction also takes place at the 1st digit of the tertiary call if it is identical with the last digit of the secondary call. Step 59 ------- The CTCSS parameters are programmed in this step as follows: 1st coding digit: CTCSS module inserted (0 = no, 1 = yes) 2nd coding digit: transmitter lag time (0 = none, 1 = 300 ms without CTCSS tone) 3rd coding digit: not used in HFG9 programming 01- = standard Step 60-67 ---------- The CTCSS decoder and the CTCSS encoder frequencies are programmed channel-dependently in these steps. 1st coding digit: group number 2nd+3rd coding digits: tone number Three CTCSS blocks (A,B,C) can be programmed, whereby block A is valid for all channels providing various channels are not programmed otherwise by entries in block B or C. See 'Channel-dependent codings' in the 'General' chapter at the end of the help text for further details ( key). The encoder and decoder input is in three digits, whereby the first digit determines the group number and the other two digits the tone number. Every encoder digit can be programmed with 'F'. The decoder digits can only be changed together with the encoder digits by the call dialling display (a '3' must be entered as a group number of the decoder coding; the tone number digits are ignored). It is therefore possible to change the CTCSS frequencies as well by means of the call dialling display. If illegal values are set here, these act as unprogrammed functions, i.e. transmission takes place anyway, for example. Call dialling may not be programmed simultaneously in CTCSS and call coding! See table 3 for group and tone numbers for the desired CTCSS frequency. Key = table (3) of CTCSS frequencies Step 68, 69, 79, 80, 91, 92 --------------------------- The digital decoders are programmed in these steps. Refer to table 4 for the necessary programming symbols. Key = table (4) for digital call programming Symbols 'F' and '-' have the following functions: 'F' means decoder selection (freely selectable digit) by means of the display in the C-unit. The decoder selection symbol 'F' means that the digits at which an 'F' is programmed can be changed in a special operating mode by means of the decoder dialling display. Entered 'F's always appear right-aligned in the display, except for the status digit which is always left-aligned. See also 'Call dialling' in the 'General' chapter at the end of the help text ( key). '-' means the digit is not included in the decoder test, i.e. all values are recognized as correct at this position The group call decoder is always active and is only determined by the caller by transmitting the HEX value 'F' in the last three digits. The first coding digit, i.e. the operating mode ID BAK should always be programmed with '1' or '2' (depending on whether mobile or stationary) or '-'. In order to be able to call both mobile stations and the base station with a call key and call dialling, it is recommended to use the coding BAK='-' contrary to the ZVEI recommendation. The special functions (disconnect call, priority call, status request, status transfer and emergency call) are always activated and are only determined by the caller. The other 7 digits must be identical, however, for the special functions as well (not for emergency call!). In line with the ZVEI recommendation, the second coding digit (status digit) should always be coded with '-' because the status is not a distinguishing feature for calling. See steps 73-76, 84-87, 96-99 for acknowledgement transmission. A received emergency call is displayed by the flashing message 'HELP'. When coding the digital call system 'ZVEI Extension' in step 40, 3rd digit, a 3-digit identification is transmitted at the 3rd to 5th digits with omission of the lozenge and manufacturer code. In this case, all the participating digital decoders must be programmed with the no tone character '-' at the 3rd to 5th digits. The three identification digits will be ignored automatically in acknowledgement decoding. See 'Channel-dependent codings' in the 'General' chapter at the end of the help text ( key). Step 70, 81, 93 --------------- The analog selective call decoders are programmed in these steps. To do this, the desired call number is entered at any position starting from the left. The length of the tone sequence is determined depending on the number of entered digits. Any necessary repeat tone may be ignored (automatic repeat tone generation). Refer to table 1 for the necessary programming symbols. Key = table (1) of the tone sequence and collective call frequencies. Symbols 'F' and '-' have the following functions. 'F' means decoder selection (freely selectable digit) by means of display in the C-unit. The decoder dialling symbol 'F' means that the digit can be changed by the user in a special operating mode by means of the decoder dialling display. Entered 'F's appear always right-aligned in the display except for the status digit which is always left-aligned. See also 'Call dialling' in the 'General' chapter at the end of the help text ( key). '-' means the digit will not be included in the decoder test, i.e. all values are recognized as correct at this position. Examples: 12345, 1234-, 123-, 123-5 See steps 73-76, 84-87, 96-99 for acknowledgement transmission. Analog identification suppression: A programmed identification suppression causes the loudspeaker to be muted for the duration of the rest of the tones after recognition of the 1st tone of a tone sequence. This function is activated by pro- gramming an analog tone sequence decoder as follows: 1st digit corresponds to the 1st tone of the identification to be suppressed 2nd - 5th digits programmed with the no tone character '-'. The same tone as the collective call decoder may not be programmed parallel to the identification suppression; identification suppression then has priority. Examples: 9----, A----, E---- See 'Channel-dependent codings' in the 'General' chapter at the end of the help text ( key). Step 71, 82, 94 --------------- The analog group call decoders are programmed in these steps. The first digit not containing a no tone character indicates the position at which group call decoding starts. This therefore corresponds to the maximum group size. If the following digits are programmed with other group call frequencies, these are also included in the test. If they are filled up with '-', they will be ignored. Any necessary repeat tone may be ignored (automatic repeat tone generation). Refer to table 1 for the necessary programming symbols. Key = table (1) of tone sequence and collective call frequencies Symbols 'F' and '-' have the following functions: 'F' without function; call dialling by means of 'F' symbol not possible '-' means, if at the start, the digit or digits are not included in the group call decoder test, i.e. matching with the selective call decoder coding is tested at this position. if positioned after a valid group call digit, the digit is not included in the group call decoder test, i.e. any tone or no tone is recognized as correct at this position. Examples: Coding: A = 12345 decodes at: 12345 = selective call decoding G = 0-- 120xx = group call decoding 12045 = group call decoding Coding: A = 12345 decodes at: 12345 = selective call decoding G = 77- 1237x = group call decoding 1277x = group call decoding Coding: A = 12345 decodes at: 12345 = selective call decoding G = AAA 1234A = group call decoding 123AA = group call decoding 12AAA = group call decoding Coding: A = 12345 decodes at: 12345 = selective call decoding G = 000 12340 = group call decoding 12300 = group call decoding 12000 = group call decoding Coding: A = 12345 decodes at: 12345 = selective call decoding G = 040 12340 = group call decoding 12040 = group call decoding Coding: A = 12345 decodes at: 12345 = selective call decoding G = -00 12340 = group call decoding 12300 = group call decoding Coding: A = 12345 decodes at: 12345 = selective call decoding G = --0 12340 = group call decoding Coding: A = 12345 decodes at: 12345 = selective call decoding G = 078 12348 = group call decoding 12378 = group call decoding 12078 = group call decoding Coding: A = 12345 decodes at: 12345 = selective call decoding G = 7-8 127x8 = group call decoding 12348 = group call decoding x = any tone or no tone The tone sequence decoder begins every decoding with the selective call coding digits. After the second digit, it checks the selective a n d group call coding. If a tone from the group call coding is received it changes to the group call sequence and checks the codings up to the last coded group call digit. See 'Channel-dependent codings' in the 'General' chapter at the end of the help text ( key). Step 72, 83, 95 --------------- The collective call decoders are programmed in these steps. The desired frequencies and the necessary symbols are contained in table 1. Key = table (1) of tone sequence and collective call frequencies Symbols 'F' and '-'have the following functions: 'F' without function; call dialling by means of the 'F' symbol not possible '-' means, collective call decoder not activated. See 'Channel-dependent codings' in the 'General' chapter at the end of the help text ( key) for further details. Step 73-76, 84-87, 96-99 ------------------------ The digital and analog acknowledgement calls are programmed in these steps. Only the acknowledgements from the block (A,B,C) in which a decoder has also been addressed are transmitted. The digital decoder activates the digital acknowledgement and the analog decoder the analog acknowledgement. The digital decoder 1 also activates the analog acknowl- edgement after the digital acknowledgement. Special features: 1. A tertiary acknowledgement is not possible. 2. If digital primary acknowledgements are programmed with 'F's, the corresponding digits of the decoded primary telegramme are entered at digits 3 to 8. Call dialling at the status digit (digit 2) of the digi- tal primary acknowledgement and status and call digits (2 to 8) of the digital secondary acknowledgement are replaced by the digits in the call dialling display. See 'Channel-dependent codings', 'Programming an analog encoder call', and 'Programming a digital encoder call' in the 'General' chapter at the end of the help text for further details ( key). Step 77-78, 88-89, 100-101 -------------------------- Not used in HFG9 programming. Step 90+102 ----------- See 'Channel-dependent codings' in the 'General' chapter at the end of the help text ( key) for further details. Step 103-113 ------------ A call coding or special function can be assigned to every programmable key in these steps. Six key assignment blocks can be programmed (A,B,C,D,E,F), whereby block A is valid for all channels providing various channels are not programmed otherwise by entries in blocks B,C,D,E or F. See 'Channel-dependent codings' in the 'General' chapter at the end of the help text ( key) for further details. The text should be applied accordingly to coding blocks A to F. Block F serves for coding the emergency call switch on channel in the case of emergency call activation by the S1 key (see step 45/4th digit). Function code entries are in 8 digits for the following keys: 1st coding digit: key S1 (top side key, in R1 unit fixed ON/OFF) 2nd coding digit: key S2 (middle side key) 3rd coding digit: key S3 (bottom side key, PTT key) 4th coding digit: key S4 (only with external connection, pin L, yellow key on ML9H) 5th coding digit: key S5 (only with external connection, pin H, green key on ML9H) 6th coding digit: key S7 (only in C-unit, symbol 'Note') 7th coding digit: *-key (only in C-unit) 8th coding digit: #-key (only in C-unit) Function code | Meaning --------------+----------------------------------------------------------- 0 | key deactivated or without identification for S3 key (PTT) 1 | call coding 1 2 | call coding 2 3 | call coding 3 4 | call coding 4 5 | call coding 5 6 | call coding 6 7 | call coding 7 8 | call coding 8 9 | call coding 9 (emerg. call -> step 45, 4th digit) A * | monitor function (various functions -> step 42, 5th digit) H * | status input (only for C-unit) C * | delete in display (only for C-unit) U * | loud/quiet function (not for C-unit) E * # | On/Off function for scanning mode (only for C-unit) L * | On/Off function for DTMF mode (only for C-unit) * Not for the S3 key ! # Only for key coding block A ! When using the function codes 1 to 6, 8, 9 and E, make sure that the corresponding codings are made ! Standard: .U000... = unit: R1 (version 0) .A000... = units: R1+SR (versions 1, 2) A10..... = units: R5, R5+SR (versions 3-9) A10002HC = units: C (version A, B) PTT identification coding In the key coding field for the S3 key, it is determined which call coding is transmitted as PTT identification on pressing the PTT key. If the decoder code is to be transmitted, this must be entered in the appropriate call coding block. Emergency call identification coding The key for releasing the emergency call is coded by entering call coding 9 in the desired key coding field. The 4th coding digit of step 45 must be programmed additionally to activate the emergency call encoder. Call coding 9 is transmitted as emergency call identification. If the decoder coding is to be transmitted, this must be entered here. Call coding The following special cases must be considered in the call coding: - the PTT identification must be programmed as call coding on the S3 key - to adjust the digital call encoder deviation of a permanent 01-sequence call coding 7 must be without content. Activation by programming call coding 7 on a programmable key - in the monitor function 'Call with monitor key' call coding 8 is used automatically. Activation in step 42, 5th digit - in emergency call activation, call coding 9 is reserved automatically for emergency call identification, activation in step 45, 4th digit Monitor coding The various monitor functions must be coded in step 42, 5th digit. In R1 and R5 units (versions 0, 3-5) 'Monitor' is entered automatically at this position so that function code A in the key coding is sufficient to code 'Monitor'. DTMF By switching on DTMF mode, keys 0-9, * and # are prepared for direct tone transmission of DTMF tones. This is displayed accordingly in the call dialling display. A DTMF tone is transmitted directly by pressing the keys. Call dialling is possible on the other keys. In step 36, 1st coding digit coding 0-3 must be selected with the desired call dialling mode. The tone duration for the DTMF mode is 100 ms independently of the duration of the keypress. There is an automatic transmitter lag of approx. 2 seconds after transmitting a DTMF tone. See step 36, 1st coding digit (control parameter) for further details. DTMF tone table: Digit 1: 697 and 1209 Hz Digit 2: 697 and 1336 Hz Digit 3: 697 and 1477 Hz Digit 4: 770 and 1209 Hz Digit 5: 770 and 1336 Hz Digit 6: 770 and 1477 Hz Digit 7: 852 and 1209 Hz Digit 8: 852 and 1339 Hz Digit 9: 852 and 1477 Hz Digit 0: 941 and 1336 Hz Symbol *: 941 and 1209 Hz Symbol #: 941 and 1477 Hz Step 114-149 ------------ The digital and analog call codings (also call with monitor key), the identification coding for the S3 key (PTT) and the emergency call ident- ification are programmed in these steps. Nine blocks can be defined in these steps. Every block contains a digital and an analog primary and secondary call. The call codings within a block are transmitted as follows: 1. digital primary call 2. digital secondary call 3. analog primary call 4. analog secondary call 5. analog tertiary call (step 58) See also 'Programming of an analog encoder call' and 'Programming of a digital encoder call' in the 'General' chapter at the end of the help text ( key) for programming. Special features: 1. Special function of the first two analog call digits Single tone encoder function If an entry is only made at the first digit, this is interpreted as a single tone. The other 4 digits are programmed with the no tone character '-'. The required tone length for this is programmed in step 49. All frequencies of table 1 can be entered with the appropriate programming symbols. Key = table (1) of the tone sequence and collective call frequencies Symbols 'F' and '-' have the following functions: 'F' initiates call dialling. The digits can be altered in the call dialling display or by using a rotary switch. See also 'Call dialling' in the 'General' chapter at the end of the help text ( key). '-' means no single tone encoder function. See double tone encoder function for single tone coding from the double tone table. Double tone encoder function: If an entry is only made at the first two digits, this is interpreted as a double tone. The other 3 digits are programmed with the no tone character '-'. The required tone length for this is programmed in step 49. If the same tone is entered twice, this is transmitted as a single tone. All frequencies of table 2 can be entered with the appropriate programming symbols. Key = table (2) of the double tone frequencies Symbols 'F' and '-' have the following functions: 'F' initiates call dialling. By entering an 'F' at one or both positions, call dialling (0-9) takes place at these positions by means of the call dialling display or a rotary switch. With the combination 'FE--' it is possible to generate a single tone capable of call dialling from the double tone table as well (table 2) with single-digit call dialling. See also 'Call dialling' in the 'General' chapter at the end of the help text (key ). '-' means no double tone encoder function 2. Call repetition Digital calls can be repeated up to 15 times with only one keypress by programming step 52 (exception: telegrammes with BAK 3 and 4). An acknowledgement is expected or not depending on the BAK. All digital call sequences with BAKs which are identified by a Q and contain no group call character expect an acknowledgement. Reception and absence of acknowledgement are indicated by different acoustic signalling; reception of an acknowledgement by the acoustic signalling selected in step 44 for the digital call decoder, absence of acknowledgement by 3x80 ms tone length with an 80 ms pause. If digital calls a n d tone sequences are programmed in the call coding, digital call mode takes place first with expected acknowledgement (if the appropriate BAKs are used) and call repetition. At the end of the final call repetition and the acknowledgement wait time, the programmed tone sequences are transmitted. After reception of a digital acknowledgement, encoder mode is interrupted, i.e. the tone sequences are no longer transmitted. See also step 39 (acknowledgement reaction time) and step 52 (call repetitions). 3. Special call coding blocks Call coding 7 must be without content if a permanent 01-sequence is to be transmitted during pressing of the programmed key in order to adjust the digital call encoder deviation. Call coding 8 is used automatically if 'Call with longer pressing'is selected in step 42, 5th digit. Call coding 9 is used automatically if emergency call release is activated in step 42, 4th digit. G E N E R A L ============= Channel-dependent codings ------------------------- Channel-dependent coding takes place for coding blocks in which certain signalling codings are combined. The coding blocks have ascending priority. Block A has the lowest priority, the last block the highest priority. If, for example, blocks A, B and C exist, they have the following priority: Block A: lowest priority (can be overruled by blocks B and C) Block B: middle priority (can be overruled by block C) Block C: highest priority (cannot be overruled) Channel assignment always takes place in the steps 'Concerns channels' by entering the desired channel symbols in any position according to steps 2-31. A certain channel assignment can only be made for channels 1-15. Chan. symbol Channel --------------------- 0-9 0-9 A 10 H 11 C 12 U 13 E 14 L 15 Programming of an analog encoder call ------------------------------------- The tone sequences are entered starting from the left. The length of the tone sequence corresponds to the number of entered digits. Any nec- essary repeat tone may be ignored (automatic repeat tone generation). The frequencies can be taken from table 1 and entered with the appropriate programming symbols. Key = table (1) of the tone sequence and collective call frequencies Symbols 'F' and '-' have the following functions: 'F' initiates call dialling. By entering an 'F' at one or more positions, call dialling takes place at these positions by means of the call dialling display or a rotary switch. The 'F' position farthest to the right is assigned to the units decade of the call dialling display. See also 'Call dialling' at the end of the help text. If the 'Group call dialling facility' (step 36) is activated at the same time, digits which have not been programmed in the call dialling display are filled up with the group call tone '-' when a call is released. Digits entered previously are shifted to the left (group call tone is the first valid tone in the group call decoder coding; tone A is used if no tone is coded there). Complete groups of 10, 100 or 1000 can therefore be called. If 'Short dialling' (step 36) is activated at the same time, unprogrammed digits are filled up automatically with '0' in the call dialling display when a call is released. No leading zeros need to be entered. '-' means that no AF is transmitted for the tone length of this position. Examples: Coding: means: 1---- single tone with tone 1 F---- single tone with call dialling 12--- double tone with tone 1/2 1F--- double tone with tone 1/call dialling 55--- single tone with tone 5 of the double tone table FE--- single tone with call dialling of the double tone table 123-- 3-tone sequence 12FF- 4-tone sequence with call dialling at the 4th digit 12F45 5-tone sequence with call dialling at the 3rd digit 123FF 5-tone sequence with call dialling at the 4th and 5th digit 123-5 4-tone sequence with pause between tones 3 and 5 Up to three tone sequences can be transmitted one after the other (primary-secondary-tertiary call) in the analog calls. The pause times between the individual tone sequences are determined in steps 50 and 51. If these are programmed at 0 and 'Transmitter keying = yes' is coded in step 36, 6th digit, the tone sequences are tagged directly onto each other so that a tone sequence of up to 15 tones can be programmed. The automatic repeat tone generation then also functions correctly. If 'F's are also to be programmed for secondary call and/or tertiary call, the display is shifted to the left by the number of 'F's entered there. Not more than 4 call dialling digits may be programmed in the sum of primary, secondary and tertiary call. In the call dialling display, the call dialling digits are right-aligned, those of the secondary call to the left of the tertiary call and those of the primary call to the left of the secondary call. Programming of a digital encoder call ------------------------------------- Refer to table 4 for the necessary programming symbols. Key = table (4) for digital call programming Symbols 'F' and '-' have the following functions: 'F' initiates call dialling. The digits can be altered by the call dialling display or a rotary switch. Entered 'F's appear always right-aligned in the call dialling display with the exception of the status digit which always appear left-aligned. See also "Call dialling'at the end of the help text. If the 'Group call dialling facility' (step 36) is activated at the same time, digits which have not been programmed in the call dialling display are filled up with the group call tone '-' when a call is released (the character 'F' is actually transmitted in the telegramme). Digits entered previously are shifted to the left. Complete groups of 10, 100 or 1000 can therefore be called. In accordance with ZVEI, the group call character must be transmitted at the last three, the last two or the last digit in order to call a group. If 'Short dialling' (step 36) is activated at the same time, unprogrammed digits are filled up automatically with '0' in the call dialling display when a call is released. No leading zeros need to be entered. '-' may be used for group call. The programming symbol must be entered in the last three, last two or last digit for this. Secondary calls are transmitted after a programmed primary call. If the operating mode ID BAK=5 (sequential telegramme) is used in primary or secondary call, the secondary telegramme is transmitted without new block synchronisation directly after the primary telegramme. Freely selectable call dialling digits can be programmed both in the primary and the secondary telegramme, whereby the call dialling digits of the primary telegramme are displayed to the left of the secondary telegramme. The status digit of both telegrammes is always displayed on the far left. Not more than 4 'F's may be programmed in the sum of the primary and secondary telegramme. See also 'Call dialling'at the end of the help text. T e l e g r a m m e i n a c c o r d a n c e w i t h ZVEI: Digit: 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 --------- --- ------ ------- ------------ -------------- Function: BAK - Status - Lozenge - Manufacturer - Call number 100s 10s 1s Unused digits are filled up with '0'. Operating mode ID (BAK): The operating mode ID is the distinguishing feature for different telegramme formats. Q BAK 0 (0): Status transfer Q BAK 1 (1): Call to mobile station Q BAK 2 (2): Call to base station BAK 3 (3): Identification (own call number) BAK 4 (4): Acknowledgement (own call number) Q BAK 5 (5): Sequential telegramme Q BAK 6 (6): Disconnect call BAK 7 (7): Reserve Q BAK 8 (8): Priority call Q BAK 9 (9): Status request Q BAK A (A): Reserve BAK B (H): Reserve Q BAK C (C): Reserve BAK D (U): freely available BAK E (E): freely available BAK F (L): emergency call BAKs marked with 'Q' require acknowledgement. The input values for programming are in brackets. Status: For transmission of status messages. Their use is not defined. (Example: '1'=starting work, '2'=am with client, '3'=am loading and unloading etc.) Lozenge: The lozenge serves as additional identification within a manufacturer code. Its use is not defined. Manufacturer code: The manufacturer code is two-digit. The allocation is defined by ZVEI. The following manufacturer codes are used by Bosch in Germany: 11, 33, 44 to 49. Call number The call number is three-digit. The hundreds digit is transmitted first, the units digit last T e l e g r a m m e a c c o r d i n g t o Z V E I e x t e n s i o n When coding the digital call system 'ZVEI extension' in step 40, 3rd digit, a 3-digit identification is transmitted at the 3rd to 5th digits whilst omitting the lozenge and manufacturer code. In this case, all the participating digital decoders must be programmed with the no tone character '-' at the 3rd to 5th digits. The digital encoder codings and acknowledgement telegrammes must contain the own identification at the 3rd to 5th digits. The three identification digits are automatically ignored in the acknowledgement decoding. Call dialling ------------- Call dialling may not be coded simultaneously for CTCSS and tone or digital call! The following combinations are possible with the 4-digit display in the C-unit: - max. 4 digit call without status - max. 3 digit call with status - max. 3 digit CTCSS (encoder; decoder only together with encoder) - max. 4 digit decoder without status - max. 3 digit decoder with status Decoder selection is activated by coding of call dialling digits in analog or digital selective call decoders. These decoder dialling digits can be altred in the C-unit in a special operating mode (switch on with S1-key pressed). The selected decoder coding is displayed even in normal mode when pressing a key with monitor function (Please note if call dialling has been coded as a monitor function with 'Call for longer pressing'). The call dialling digits for tone sequence, digital call or CTCSS are right-aligned in the display, the status digit left-aligned. The call dialling digits in encoder sequences are displayed from left to right according to the following scheme: - Digital encoder status digit (primary/secondary) in call/acknowledgement coding - Analog/digital encoder primary in call/acknowledgement coding* - Analog/digital encoder secondary in call/acknowledgement coding - Analog encoder tertiary in call coding * Call dialling is not possible in digital primary acknowledgement at digits 3 to 8! If call dialling digits are coded in call coding and acknowledgement coding, the same digits in the display or the same rotary switch setting is used. If call dialling digits are coded in analog and digital encoder sequences, the same digits in the display or the same rotary switch setting is used. The same applies for the decoder. If the number of digits differs, the allocation is made beginning at the right; digits at unused display positions are ignored. But since all display positions have to be filled up for call transmis- sion, only a call dialling mode with group call dialling facility or short dialling (step 36, 1st digit) is advisable when the number of call dialling digits differs. If call dialling digits are coded in several call coding blocks, the same digits in the display or the same rotary switch setting is used. The same applies for decoder and acknowledgement blocks.