OPERATING MANUAL
7610-4700-1201
Issue A
6-6
6.25 TRANSMISSION TIME OUT
To prevent one radio keep busy the channel its transmission time period can be limited.
This period is determined during programming up to 255 seconds. And another time period
can be determined for same radio that it has to wait before passing transmission again.
Thus same radio does not keep busy the channel again for a while. This waiting period
can be adjusted during programming between 0-15seconds. Transmission time out is
notified by an audible alert and transmission is terminated. And radio does not pass
transmission even if its PTT button is pressed, if waiting time period before making
transmission again had been defined.
6.26 BUSY CHANNEL LOCK
Busy Channel Lock is used to prevent radio passing transmission if there is a broadcast in
the channel. Radio that has busy channel lock cannot pass transmission as long as there
is a broadcast at the channel.
6.27 DTMF
At analog mode if radio's alphanumerical keys are pressed during transmission, radio can
produce DTMF tones. But "DTMF transmission authority" must have been given to the
radio during programming. Radio can not make DTMF receive process.
6.28 SELECTING CHANNEL
Radios that have keypad select 300 channels by keypad. First 15 channels can be
selected by Channel Switch. For bigger channels, Channel Switch is taken to position 16
and required channel is dialed from keypad. Radio settled to the selected channel after
entering channel number and pressing "OK".
6.29 KEYLOCK
To prevent involuntary pressing the keys, keypad becomes unfunctional by key lock. This
is achieved by pressing key lock button at the radio. If the same button and "UNLOCK" key
is pressed keypad becomes functional again.
6.30 SIGNAL LEVEL
Received signal level is shown by bars. Besides, its value can be read as dBm from Radio
Info / Measurement sub menu. User can adjust the output power according to the received
signal level for power save or it can learn if it is outside of the coverage area.
6.31 BATTERY CHARGE LEVEL
BB4463 smart battery blocks are used at 4700 APCO25 Conventional Handheld Radios.
Charge level of the battery can be seen at the display. And remaining charging level is
shown as percentage and Volt at the related menu.
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