ASL INTERCOM PS 260 Benutzerhandbuch - Seite 4
Blättern Sie online oder laden Sie pdf Benutzerhandbuch für Zubehör ASL INTERCOM PS 260 herunter. ASL INTERCOM PS 260 11 Seiten. Dual channel audio interface pro series
4.0
FRONT PANEL CONTROLS
The PS 260 consists of two separate interface modules in
one housing. Each module interfaces between ASL 3-wire
systems and 4-wire systems. The signal on the audio wire
of the ASL 3 wire system is converted in a balanced signal
and appears on the audio output connector.
1 POWER indicator led
This led illuminates if line power is supplied by the
power supply or master station of the ASL partyline
intercom system in which the PS 260 is used.
2 INPUT LEVEL control knob
This knob controls the level of the input signal before it
is placed on the intercom line.
3 OUTPUT LEVEL control knob
This knob controls the level of the intercomline signal
appearing at the output connector.
4 SIDETONE LEVEL trimmer
This trimmer controls the level of the input signal
appearing at the output.
5 SIDETONE HI trimmer
This trimmer controls the input/output separation in the
high frequency range.
4
Signals offered to the audio input are placed on the audio
wire of the 3-wire intercom line connector.
To avoid that signals on the audio input are being placed
on the audio output connector, there is a sidetone
available.
6 SIDETONE TEST knob
This hidden push button switch activates a test tone
generator which adds a 200 Hz tone to the input signal.
It allows you to adjust or check the sidetone trimmer
settings at any time. The switch can be reached with a
match or a small screwdriver.
Note: Make sure you are not disturbing any
communication because the test-tone is placed on the
intercomline which implies that all stations on that
channel can hear the test tone.
Sidetone adjustment procedure.
-
Connect a monitor amplifier to the audio output.
-
Turn up output level approx. half way.
-
Set sidetone trimmers in start position
level
: turn fully clockwise.
hi
: turn fully anti clockwise.
-
Activate the testtone generator.
-
Decrease test tone level by turning the level
trimmer anti clock wise and adjust for minimum
level.
-
Decrease the remaining high frequencies by turning
the hi trimmer clockwise and adjust for minimum
level.
-
Repeat the last two mentioned procedures, until
you are sure you have obtained the best settings
possible.
User Manual PS 260 / Issue 1 © 1994 ASL Intercom, Utrecht, Holland.