User Manual BS 216 / Issue 1 © 1998 ASL Intercom, Utrecht, Holland.
3
5.0 FRONT PANEL CONTROLS & CONNECTOR
1 POWER ON/OFF switch 5 SIDETONE trimmers
Mains power push button for switching ON and OFF These trimmers adjust the level of your own voice as
the internal power supply. you hear it in your headset.
2 POWER LED
This LED illuminates if line power is supplied by the - set the trimmer in start position: fully clockwise.
internal power supply. - switch off the microphone of all connected
3A BUZZER VOLUME trimmer
This trimmer adjusts the volume of the buzzer. - turn up the volume of the required channel.
3B BUZZER
This buzzer indicates an incoming or outgoing call. trimmer.
It is activated by pressing a CALL button of the BS 216
or a CALL button of any other station on channel A or The operating area is between fully clockwise and
B for longer than two seconds. minimum level. Adjusting the sidetone does not affect
You can adjust its volume with the buzzer volume the level of your voice as it is heard by other stations.
control.
4 VOLUME A & B control knobs
These knobs adjusts the listen level for the headset. separately or simultaneously.
Each channel can be adjusted separately. The large green LED indicates if the talk function is
Adjustment procedure :
(speaker!) stations.
- switch on the microphone of the required channel.
- speak into the headset microphone.
- adjust the listen level by turning the sidetone
6 TALK A & B buttons
These buttons allow you to talk to each channel
activated.
7 CALL A & B buttons
These push buttons activate the CALL system.
A momentary push will send a CALL signal to all
stations connected to that intercom channel and the
CALL LEDS will start flashing.
Press and hold the buttons for 2 seconds will activate
the call buzzer.
After the CALL button is released the LEDS will
continue to flash for a further 2 seconds.
8 AUX VOLUME controls
These knobs adjust the level of the Aux input signal to
each of the two intercom lines.
9 HEADSET connector
A XLR-4 type connector for the connection of the local
headset. This must have a can impedance of 200
ohms or greater. The mic may be of the dynamic or
electret type.
Pin assignments:
1. shield mic. (GND)
2. mic. +
3. phones +
4. phones - (GND)
(16 pages)
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