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PAGE 3
User manual PS 155 / Issue 2011 © ASL Intercom BV
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1.0
GENERAL DESCRIPTION
The PS 155 is designed to be a single channel
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wireless intercom systems and ASL wired (party
line) intercom systems.
The unit is housed in a strong steel tabletop case.
Located on the front panel are volume controls
(send and receive), side tone adjustment
trimmers, a test tone switch, VOX adjustment
trimmers and TX controls.
The PS 155 contains an audio interface which
splits the audio on the wired intercom party line
into an audio output and an audio input. Via the
audio output the audio of the party line is sent to
the wireless intercom system. Via the audio input
the audio of the wireless system is sent to the
party line. Audio output and audio input can be
separately volume controlled by a SEND
respectively a RECEIVE volume knob. Both the
output and the input are transformer balanced.
The built-in test tone generator assists obtaining
the best possible side tone rejection in the audio
interface section. The tone generator is activated
by pushing the recessed switch at the front panel.
To connect the PS 155 to a wireless intercom
system, a special cable is needed. In this user
manual it is assumed that the cable is connected
to
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intercom
station (Motorola, Kenwood or other make),
hereinafter called
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If the internal Transmit Switch of the PS 155 is
triggered, the wireless unit goes from
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receive
mode
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to
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transmit mode
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.
There are 3 ways to trigger the Transmit Switch,
to be selected by a 3-position switch in the TX
CONTROL section of the PS 155 front panel. See
section 7.0.
2.0
UNPACKING
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The shipping carton contains the parts listed
below:
the PS 155
this user manual
a Sub-D 9 connector (cable part)
If any are missing, contact your dealer.
ASL has taken great care to ensure this product
reaches you in flawless condition.
After unpacking the unit please inspect for any
physical damage to the unit, and retain the
shipping carton and relevant packing materials for
use should the unit need returning.
If any damage has occurred, please notify your
dealer immediately so that a written claim can be
initiated. Please also refer to the warranty section
of this manual.
3.0
WARRANTY
This unit is warranted by ASL Intercom to the
original end-user purchaser against defects in
workmanship and materials in its manufacture for
a period of one year from date of shipment to the
end-user.
Faults arising from misuse, unauthorized
modifications or accidents are not covered by this
warranty. If the unit is faulty it should be sent in its
original packing, to the supplier or your local ASL
dealer, with shipping prepaid. A note must be
included stating the faults found and a copy of the
original suppliers invoice.
4.0
INSTALLATION
This PS 155 is powered (30V DC) by an ASL
master station or separate power supply, via the
intercom connection cable (the party line).
Connect this cable to the LINE connector on the
rear panel. Use professional microphone cable
with 2 wires and 1 shield only.
The PS 155 is fully protected against wiring
mistakes (reverse power) or short-circuit in the
intercom connecting cable.
To connect the PS 155 to the wireless unit a
special cable is needed, to be connected to the
Sub-D9 connector on the rear panel. For the pin
configuration of this connector and further details,
see section 8.0.
