User Manual

Installation and Operator Handbook Introduction
AMX–MA–00651 Issue 0.02 (USA)
7
Table 1-2 DRB-25 Voice Interconnect Configuration Options
Mode of Voice
Interconnection
Description
None The DRB-25 operates as an standalone repeater (single or dual channel)
and does not have any external wired voice connections.
Handset/
DTMF Microphone
A single channel DRB-25 may be configured with a loudspeaker/handset
panel in place of the second channel transceiver module and its associated
power amplifier and power supply module. A DTMF microphone may be
used to control the transceiver.
Tone Remote Either one or two 2 wire or 4 wire + E & M connections are used to link the
Transceiver Modules to industry standard tone remote units. Received
audio is fed down the line and industry standard tone frequencies are used
to control DRB-25 functions such as PTT and channel select. Existing
analog tone remotes may be used with the DRB-25 operating in both
analog and APCO Project 25 digital modes.
PSTN Either one or two 2 wire or 4 wire + E & M connections are used to link the
Transceiver Modules to the PSTN. Each connection can seize a line or
grant a line in response to a PSTN request. Once a connection is
established, monitor audio is fed down the line and tones from the remote
end are used to control DRB-25 functions such as PTT and channel select.
Microwave Either one or two 4 wire E & M connections are used to link the DRB-25
Transceivers to the outside world. The interface can be connected to a
multiplexer of the microwave link.
Table 1-3 DRB-25 Programming and Diagnostic Configuration Options
Setup and Console
Interconnection
Description
Programming using
Transceiver Module
Programmer (TMP)
A PC running TMP is connected to the front panel serial port of either
transceiver module to upload programming information into the DRB-25.
TMP may also be used remotely using a dial-up modem (future option).
Diagnostics using DRB-25
Diagnostic Monitor (ZDM)
A PC running ZDM is connected to the front panel serial port of the
Controller Module which enables both transceivers to be monitored and
diagnostic checks to be run. The serial ports may also be used to connect
the DRB-25 to a digital console (future option). ZDM may also be used
remotely using a dial-up modem (future option).