User manual

PAGE 5
User Manual PS 130 / October 2013 © ASL Intercom BV
8 GOOSENECK MICROPHONE
The PS 130 is equipped with an electret noise
canceling gooseneck microphone.
A limiter prevents the microphone preamplifier
from clipping when speaking close into the
microphone.
9 HEADSET connector
An XLR-4 connector for the connection of a local
headset when private conversation is desired.
The headset must have a can with an impedance
of 200 ohms minimum, or have two cans in
parallel each 400 ohms minimum. The headset
microphone may be a dynamic or electret type.
XLR-4 pin assignments :
pin 1. Shield mic. (GND)
pin 2. mic. +
pin 3. phones +
pin 4. phones
When a headset is connected, the speaker and
gooseneck microphone are disabled
automatically.
10 LOUDSPEAKER
A high quality loudspeaker driven by a 2.9 Watt
amplifier
.
4.0 SIDE PANEL CONNECTORS
11 LINE connectors
These connectors are for connecting the PS 130
to the intercom system.
XLR-3 pin assignments :
1. 0 V /ground shield
2. +30V power wire
3. audio wire
The female connector is for input,
the male connector for extending
the intercom line to other stations.
5.0 INTERNAL CONTROLS
Inside the unit there are two trimmers to adjust
the mic gain of the gooseneck microphone and
the headset microphone separately. The trimmers
are located on the PC board.
The trimmers can be reached as follows :
• remove the screws of the bottom plate
• slide the plate to one side and take it out
• take away the plastic isolation plate
The two trimmers are labeled :
‘GOOSE’ for the gooseneck microphone
‘HEADS’ for the headset microphone