Kenwood TK-780 Service Manual Supplement

Also see for TK-780 series: Programming instructions Instruction manual Service manual Instruction manual Service manual

4TK-780/H2-2. Programmable KeysThe FPU (KPG-49D) enables programmable keys to se-lect the following functions. Conventional formatAUX-A, AUX-B (Only when voice scrambler is not se-lected), Channel down, Channel up, DTMF ID (BOT), DTMFID (EOT), Display character, Emergency (Only foot key),Function, Group down, Group up, Home channel, Horn alert,Key lock, Memory (RCL/STO), Memory (RCL), Memory(STO), Monitor A, Monitor B, Monitor C, Monitor D, Opera-tor selectable tone, Public address, Redial, Scan, Scan del/add, Scrambler (Only when voice scrambler is selected),Talk around, Volume down, Volume up and None. Trunking formatAuto tel, AUX-A, AUX-B (Only when voice scrambler isnot selected), DTMF ID (BOT), DTMF ID (EOT), Display char-acter, Emergency (Only foot key), Function, Group down,Group up, Home group, Horn alert, Key lock, Memory (RCL/STO), Memory (RCL), Memory (STO), Monitor A, Monitor B,Monitor C, Monitor D, Public address, Redial, Scan, Scandel/add, Scan temporary delete, Scrambler (Only whenvoice scrambler is selected), System down, System up, TELdisconnect, Volume down, Volume up and None.These functions the FPU programs to the function keysand described in the following sections.• Auto TEL (Trunking format)Automatically connects available repeaters that are con-nected to telephone circuits when operating as LTR system.The time allocated to search for available repeaters is 60seconds, after which connection failure occurs, a DTMFtone is output and the function terminates.If connection to an available circuit is made, only ID 253,EOT or hang-up time-out can terminate the function.• AUX-AIf this key is pressed, “AUX” icon lights on the LCD andAUX port which is inside of the transceiver turns to the highlevel. If pressed again, the “AUX” icon goes off and theAUX ports turns to the lower level.• AUX-BThis function can be programmed when the voice scram-bler board is not installed.If this key is pressed, an underscore (“_”) appears at theextreme right of the LCD and AUX port which is inside of thetransceiver turns to the active level. If pressed again, theunderscore disappears and the AUX ports turns to thedeactive level.• Channel up/down (Conventional format)When the key is pressed each time, the channel numberto be selected is incremented/decremented and repeats ifheld for one second or longer. This key works as the voicescrambler code selector in the voice scrambler code selectmode.OPERATING FEATURES• DTMF ID (BOT)In conventional mode, if you press this key, a predeter-mined DTMF ID (Begin of TX) will be sent automatically.• DTMF ID (EOT)In conventional mode, if you press this key, a predeter-mined DTMF ID (End of TX) will be sent automatically.• Display characterThis key switches the LCD display between the systemand group number in trunking format and the group andchannel name in conventional format.• EmergencyPressing this key for longer than the programmed “Emer-gency Key Delay Time” causes the transceiver to enter theemergency mode. The transceiver jumps to the pro-grammed “Emergency system and group in trunking formatand the group and channel in conventional format” andtransmits for the programmed “Active Time”.The transceiver disables mic mute while transmitting.After finishing transmission, the transceiver receivers forthe programmed “Interval Time”. The transceiver mutesthe speaker while receiving. Following the above sequence,the transceiver continues to transmit and receive.• FunctionPressing this key causes the transceiver to display“FCN”. Then, pressing a microphone DTMF key causes thecorresponding programmed function to start. This key maybe convenient when using many functions with the micro-phone 12-key keypad.• Group up/downWhen the key is pressed each time, the group number tobe selected is incremented/decremented and repeats if heldfor one second or longer.• Home channel (Conventional format)Press this key once, the channel switches to the pre-pro-grammed home channel.• Home group (Trunking format)Each pressing of the key selects a preset system/group.• Horn alertIf you are called from the base station using 2-tone/DTMFwhile you are away from your transceiver, you will bealerted by the vehicle horn or some other type of externalalert. To turn the horn alert function on , press this key. Aconfirmation tone sounds, and the display shows “HA” onthe sub LCD.If this key is pressed again, the horn alert function isturned off.• Key lockPressing this key causes the transceiver to accept entryof only the [Function], [Key lock], [PTT], [Monitor A], [Moni-tor B], [Monitor C], [Monitor D], and [Emergency] keys.