ASL INTERCOM PS 130, Руководство пользователя

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User Manual PS 130 / Issue 1 © 1994 ASL Intercom, Utrecht, Holland.
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4.0 FRONT PANEL CONTROLS AND CONNECTOR
1 VOLUME control knob 6 SPEAKER ATTENUATOR trimmer
This knob adjusts the listen level for the headset and This trimmer allows you to dim the speaker automati-
the loudspeaker. cally, when the gooseneck microphone is switched on.
2 TALK button
This push button activates the gooseneck or headset
- unit feedback if sidetone rejection is not sufficient.
microphone, the large green LED indicates if the - system feedback or a 'hollow' sound when the
microphone is switched on. microphone's of other speaker stations on the
Latched switching:
When a TALK button is pressed quickly, the
Adjustment procedure :
microphone will be switched on, and is electronically - switch off TALK buttons.
latched. When pressed again, the microphone will be - inject an audio signal on the intercom channel.
switched off. - turn up volume.
When the microphone is latched on, it can be muted by of attenuation.
a Mic Mute from a PRO Series master station or
separate power supply.
The speaker attenuator has no effect when a headset
Momentary switching:
When a TALK button is pressed and held, the
microphone will be switched on, and when released,
This trimmer adjusts the volume of the internal buzzer,
will be switched off. which is located behind the front panel.
3 CALL button
This push button activates the call system.
than 2 seconds and the buzzers are not muted (on the
A momentary push will send a call signal to all stations master station or power supply).
connected to the intercom channel and the call LEDS
will start flashing.
Press and hold the button for 2 seconds will activate
A high quality electret noise canceling microphone.
the call buzzer, if not muted. A limiter prevents the microphone preamplifier from
After the CALL button is released the LEDS will clipping when speaking close into the microphone.
continue to flash for further 2 seconds.
4 SIDETONE LEVEL trimmer
This trimmer controls the level of your own voice as
headset when private conversation is desired. This
you hear it in the speaker or in the headset. headset must have a can impedance of 200 ohms (or
It prevents the speaker from feeding back into the greater), or each 400 ohms minimum when in parallel.
microphone. The microphone may be of the dynamic or electret
5 SIDETONE HI trimmer
This trimmer controls the rejection in the high
Pin assignments :
frequency range. It compensates the capacity of the 1. Shield mic. (GND)
interconnecting cables and prevents the speaker from 2. mic. +
feeding back into the microphone (unit feedback). 3.
Adjustment procedure for both sidetone trimmers :
-
set trimmer in start position : fully clockwise. When connecting a headset, the speaker and
- switch off the microphone of all connected (speaker gooseneck microphone will be disabled automatically.
!) stations.
- switch on the microphone of the PS 130.
- turn up volume. A high quality loudspeaker driven by a 1.3 Watt
- speak into the headset microphone. amplifier.
- adjust the listen level by turning the sidetone Speaker and gooseneck microphone automatically
trimmer. shut off when a headset is used.
The operating area is between fully clockwise and
minimum level. Adjusting the sidetone does not affect
the level of your voice as it is heard by other stations.
It prevents :
same channel are activated simultaneously.
- activate microphone and adjust the desired amount
is used.
7 BUZZER VOLUME trimmer
The buzzer is activated if you press the CALL button of
the PS 130 or a CALL button of any other station (on
the channel to which the PS 130 is connected), longer
8 GOOSENECK MICROPHONE
9 HEADSET connector
An XLR-4 type connector for the connection of a local
type.
4. phones -
10 LOUDSPEAKER