VoiceInterop AudioMate AM360r User Manual - page 18
www.VoiceInterop.com
8000 N. Federal Highway, Suite 100, Boca Raton, FL, 33487 V: +1 561.939.3300
AM360r User Manual
revised 2009.05.25 for
Hardware Rev. B
Firmware Version 1.00.24
Motorola Waris Series
Most Motorola mobile radios in the Waris series (CM and CDM models) use the same pin-
outs for basic interfacing via a 16-pin accessory connector on the rear apron. A number of
the accessory pins are programmable in the radio using Motorola’s closely guarded CPS
programming software.
Radio Programming Necessary For Use With Gateway
In almost every case where a new installation does not work as expected with a Motorola
radio, the culprit is an improperly programmed accessory connector. Motorola CPS provides
a number of preset configuration macros that speed this process. Look for a preset labeled
"telephone interconnect", "phone patch" or similar wording. This should configure the pins
of interest to do the right thing.
Pin 8 on a conventional radio must be programmed for combined PL/DPL AND COR
indication; on a trunked radio select Talkgroup Activity.
Pin 11 must be programmed to provide squelched receiver audio with constant level.
Program the radio to use Pin 2 which is a mic level input to the transmitter that will provide
limiting with pre-emphasis and use Pin 3 for external PTT.
Interface Cable
There are several eBay sellers offering interface cables for Motorola radios. At a minimum
look for a 5-wire cable with a 16-pin accessory plug on it that fits all the CDM and CM series
Motorola mobile radios.
Because some 16-pin plugs are not keyed, care must be used when inserting it into the 20-
pin accessory receptacle on the CDM1550 radios, being certain to center the plug; that is,
leave 2 pins bare on the left and 2 pins bare on the right so that the plug sits in the center 16
pins of the radio.
Pin Assignments
Mot
AM360r
Description
2
TXA
Transmit microphone audio to radio
3
PTT
Push-to-talk control signal to radio
7
GND
Ground, common, return
8
COS
Carrier-Operated Switch (COS, COR, RUS), receive activity indicator
11
RXA
Receive line-level audio from radio
Troubleshooting
If in doubt about the interface, a Volt meter can be used to determine if the COS input pin of
the AM360r gateway changes when the attached Motorola radio is actively receiving a radio
signal. It should be between 5 and 12 Volts when idle, and should drop to near 0 Volts during
a received signal.
If the Voltage does not go low when the received signal is heard, then the Motorola radio is
not programmed properly for use with a gateway. This is the #1 problem preventing proper
operation of new installations. Check the accessory pin programming of the Motorola radio
FIRST.
Motorola Speaker Jumper
Note: Jumper Motorola pins
15 and 16 together to enable
the radio’s internal speaker.
Motorola Speaker Jumper
Note: Jumper Motorola pins
15 and 16 together to enable
the radio’s internal speaker.
Not Working?
Proper programming of radio
accessory pins is ESSENTIAL
to interface with Motorola
radios. CHECK ACCESSORY
PIN PROGRAMMING FIRST.