GAI-Tronics IDA1000A DC Remote Adapter Installation and Service Manual - Manual (Page 23)

19 01/05
Troubleshooting
Troubleshooting the Model IDA1000A DC Remote Adapter
The following is a list of potential problems you may encounter and possible solutions.
Problem Possible Solution
General problems Ensure that there is a valid circuit line path from the desk set to the dc remote
adapter.
Check for a blown fuse and ensure that the dc remote adapter is connected to
a properly functioning dc power source (if using a dc power supply option).
The IDA1000A will not
key the radio. Ensure that one of the IDA1000A PTT outputs is connected to the radio.
Check the telephone line continuity from the desk set to the remote adapter.
Reversed phone line pins 3 and 4.
Ensure that the telephone line is generating a current that the IDA1000A uses
for keying the radio.
Radio is keyed constantly
while the IDA1000A is
connected. Ensure that the PTT is in the proper active state:
P1-6 Ground keying
P1-13 B+ keying
RX audio is low or
distorted. Ensure that the IDA1000A receive sensitivity is set properly.
Ensure that there is no more than 20 dB loss in the telephone line.
There is constant white
noise in RX audio. Obtain RX audio from a muted source in the station and not ‘raw
detector/disc. audio.’ See radio manuals.
There is no RX audio. Check fuse F3 (4-wire option)
Check radio cable connections to radio’s RX audio source.
There is no TX audio. Verify that the radio is being keyed when transmitting to the IDA1000A from
a dc remote.
Verify that the IDA1000A output level is properly set and there is not more
than 20 dB of loss in the telephone line.
Open fuse F2. (See fuse replacement information below.)
TX audio is distorted. Verify that the dc adapter transmit audio output is not set too high for the
radio’s expected input level. Adjust the TX audio level pot for proper setting.
TX level is set too high or SW1-2 is set to wrong position.
IDA1000A does not
transmit or receive. Ensure that there is a telephone line audio path from the IDA1000A to the dc
desk set.