I N S T A L L A T I O N
16.
INTERCOM ADJUSTMENTS
In order to match the Transmit and Receive Audio to the radio, it will be necessary to
perform some adjustments. These items are adjusted by switches and variable resistors
located on the circuit board inside the intercom unit (Figure 18).
These adjustments MUST be performed by a Qualified Radio Technician. Failure to per-
form these adjustments may result in problems hearing and transmitting radio signals
when using the Intercom System.
RECEIVE AUDIO ADJUSTMENT:
27.
T
urn the 2-way radio on, and adjust the radio volume to the normal volume level
for use
WITHOUT THE INTERCOM INSTALLED.
28.
Radio A (all models):
Adjust VR3 to set the Receive Audio so that it is at the same
level as the audio heard when listening to someone speak over the intercom.
29.
Radio B (3020R only):
Adjust VR4 to set the Receive Audio so that it
is at the
same level as the audio heard when listening to someone speak over the intercom.
HOOK SWITCH ADJUSTMENT:
The Hook Switch is used by some radios to sense when the hand mic has been taken “off-
hook.” This information is for many different functions, including disabling a programmed
or scanning function. If the radio is a multi-channel radio with a scanning mode, it may be
necessary to make the proper hook switch connections and adjustments to the intercom. A
change to the radio programming may also be needed.
The Firecom 3010R Series
Intercoms have an adjustable delay between pressing the Push-To-Talk on the headset and
the keying of the radio. The minimum delay is 0.2 second, the maximum is 3.5 seconds.
30.
Radio A (all models):
Adjust VR2 for the proper delay time.
31.
Radio B (3020R only):
Adjust VR1 for the proper delay time.
If a delay between pressing the PTT and keying the radio is NOT necessary for
your radio, make sure it is set to the minimum time.
FIGURE 18:
3010R Series Adjustments
VR4
VR1
VR3
VR6
VR2
VR5
IMPORTANT
IMPORTANT
VR3: Receive Audio Adjust (radio A)
VR6: Transmit Audio
Adjust (radio B)
VR2: Hook Switch Delay (radio A)
VR5: Transmit Audio Adjust (radio A)
S2: Range Switch Assembly (radio B)
S1: Range Switch Assembly (radio A)
VR1: Hook Switch
Delay (radio B)
VR4: Receive Audio
Adjust (radio B)
S2 S1
Front
