ASL INTERCOM PS 230 User Manual page 5

2 TALK buttons
This push buttons (one for each channel) activates the gooseneck or headset micro-
phone. The large green LED indicates if the microphone is switched on.
Momentary switching:
If the TALK button is pushed and held, the microphone signal is sent to the intercom
channel until the button is released.
Latched switching:
If the TALK button is pushed quickly it is electronically latched and the microphone sig-
nal is sent to the intercom channel. If pushed again, the TALK button switches off.
Mic Mute when latched on:
After on the intercom channel a so-called MIC Mute signal has been received from a
PRO Series master station or separate power supply, the connection between micro-
phone and intercom channel is interrupted. By pushing the TALK button the connection
is restored again.
3 CALL buttons
This push buttons (one for each channel) activates the call system. By a momentary
push a visual call signal is sent to all stations connected to the intercom channel and the
call LEDs start flashing. By keeping one of the CALL button pushed for 2 seconds the call
buzzer is activated, provided there is no 'buzzer mute' on one or both intercom chan-
nels. After the CALL button is released the LEDs continue to flash for a further 2 se-
conds.
4 SIDE TONE LEVEL trimmer
These trimmers (one for each channel) are for minimizing the speaker feeding back into
the gooseneck microphone (unit feedback). They also determine the level of your own
voice as you hear it in the speaker or headset.
5 SIDE TONE HI trimmer
These trimmers, one for each channel, have the same purpose as trimmer #4, but solely
for the high frequencies.
Adjustment procedure for both side tone trimmers:
set trimmer in start position: fully clockwise
•
switch off the microphones of all connected (speaker) stations
•
make sure there is no automatic speaker attenuation (turn trimmer #6 fully
•
5