User Manual

Installation and Operator Handbook Operating Instructions
AMX-MA-00654 Issue 0.02 (USA)
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4.5 CONFIGURATION
If all the external indications are that the DRB-25 is operational, proceed with the configuration process using
the Transceiver Module Programmer application as described in Chapter 5. Once configuration has been
completed, the DRB-25 can be tested in its intended system environment.
Channels may be configured as fixed channels or scan channels as described in Chapter 5.
4.5.1 Fixed Channel Operation
Fixed channels will operate according to all the parameters entered in the channel settings dialog box (see
chapter 5).
4.5.2 Scan Channel Operation
Scan channels may be set up to scan between up to eight channels. The first channel selected in the scan
sequence will define the operating mode (local or remote basestation or repeater), station ID, timers,
encryption, power output and source priority during all scanning. The DRB-25 will scan between the channel
mode, spacing, talk group ID, receive configuration and transmit configuration of each selected channel.
The DRB-25 will scan sequentially through the selected channels, with a maximum scan rate of 2 channels
per second (500ms on each channel), unless a valid signal is detected on a channel. If a valid signal is detected
then the DRB-25 will remain on that channel until the call is completed, then continue scanning. The scan
channel can also be programmed with additional dwell times, such that the DRB-25 will remain on the
channel for the specified dwell time after the completion of a call, to allow for a return call.
4.6 LOCAL OPERATION
The DRB-25 may be operated locally by using a DTMF microphone and speaker connected to the front panel
handset socket of the transceiver module. Each transceiver must have a separate speaker and microphone.
4.6.1 Monitoring Audio
In single channel configurations a loudspeaker panel may be fitted to the unit to provide a speaker and volume
control (refer to 3.5.4.6). Audio may be also monitored from the Transceiver Module via an external speaker
connected to the front panel RJ45 audio connector.
The speaker will monitor audio on the selected channel of the transceiver, with receive parameters as defined
by the channel table entry in the Transceiver Module Programmer. In normal operation all traffic with a valid
NAC (digital mode) or CTCSS/CDCSS (analog mode) will be routed to the speaker. When operating as a
basestation the unit may be put into ‘monitor’ mode by keying the sequence *5* on a DTMF microphone
connected to the transceiver module audio connector. In monitor mode all traffic on the receive frequency
will be routed to the speaker irrespective of NAC or CTCSS/CDCSS. The DTMF key sequence *5* will
revert the basestation to normal squelch mode.
Note : the DTMF key # will erase any preceding (incomplete) DTMF key sequence.