Auxiliary Input & Output - Firecom 3010 Series Installation & Operation Manuals

TRANSMIT AUDIO ADJUSTMENT
The Transmit Audio is adjusted by using the Range Switch Assemblies, and Variable
Resistors VR5 & VR6. Each range switch assembly has 2 switches which select ranges
for the Transmit Audio adjustment (see table 1 for the range switch settings), and the
Variable Resistors adjust the Transmit Audio level within these ranges.
32. Radio A (all models): Using a Service Monitor, adjust the Range Switch As-
sembly S1 and VR5 for proper transmitter deviation and no transmitted audio
clipping.
33. Radio B (3020 & 3025 only): Using a Service Monitor, adjust the Range Switch
Assembly S2 and VR6 for proper transmitter deviation and no transmitted au-
dio clipping.
S1
On
Off
Off
(Maximum Signal At Mic Jack: 1.1 v pk-pk)
AUXILIARY INPUT & OUTPUT
On the back of the 3010 Series Intercom, there are 2 jacks labeled "Aux In" and "Aux
Out". These jacks are 3.5 mm mono (2 conductor) jacks. The auxiliary input signal will
be mixed with the radio and intercom audio. The auxiliary input signal CANNOT be
directed to the transmit circuits for radio broadcast, nor will it be recorded by the Digital
Message Recorder. The auxiliary output signal strength will be exactly 1/2 the strength
of the signal in the headsets. The auxiliary output signal will consist of intercom audio,
receive audio from radios A & B and any audio present from the auxiliary input.
Auxiliary
Input
INSTALLATION
S2 Mic To Output Gain
On +19 dB to -2 dB
On -1 dB to -22 dB
Off -20 dB to - 42 dB
Auxiliary
Output
TABLE 1
Range Switch Settings
FIGURE 19
3025 Rear Panel
17.