ASL INTERCOM PS 4379, Руководство пользователя

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6.0 FRONT PANEL CONTROLS & CONNECTOR continued
18 AUX LEVEL / IFB DIM
With this knob the Volume of the AUXILlARY and
the dim factor of the IFB can be set for each
channel separately.
- AUX LEVEL
The auxiliary can be assigned to any or all of the
four intercom channels. The auxiliary volume for
each channel can be adjusted separately by
pushing and holding -for example- the AUX
button of channel A for 2 seconds till the light
starts flashing. The AUX level can now be
adjusted on the AUX Level knob and is confirmed
by pushing the AUX LEVEL knob. The volume
setting is indicated on the LED bar (see point 18).
- IFB DIM
With the IFB DIM you adjust the dim factor of the
IFB auxiliary when talking over that channel.
Factory setting is that the auxiliary volume will
reduce by 50 %. This can be adjusted with the
IFB DIM knob for each channel separately. If for
example channel A has been selected to be an IFB
channel the dim factor can be adjusted by
pushing and holding the IFB button A for 2 seconds
till the light starts flashing. The IFB dim factor can
now be adjusted on the IFB DIM Level
knob and confirmed by pushing the knob. The dim
factor is indicated on the LED bar (see point 18).
19 AUX LEVEL / IFB DIM FACTOR LED BAR
This LED Bar indicates the settings of all DIM factors
and Auxiliary volumes as described in the equivalent
sections.
20 ALL MIC MUTE
With this pushbutton all microphones of the connected
stations and of the PS 4379 can be switched off. Each
user station can activate the talk function again by
pushing a TALK button.
21 ALL BUZZER MUTE
With this button all buzzers of the connected stations
and of the PS 4379 can be muted.The buzzers stay
muted until the ALL BUZZERMUTE button is switched
off again.
14 HEADSET connector
A XLR-4 type connector for the connection of a local
headset when private conversation is desired.
The headset must have a can impedance of 200 ohms
(or greater), or each a minimum of 400 ohm when in
parallel. The headset microphone may be of the dyna
mic or electret type.
Pin assignments :
1. Shield mic. (GND)
2. mic. +
3.
4. phones
When connecting a headset, speaker and gooseneck
microphone will be switched off automatically. The
speaker can be switched on again by pushing the
SPEAKER on/off button. The PS 4379 can optionally
be equipped with a XLR-6 headset connector for
binaural use. Jumpers on the front PCB board inside
determine the destination of the listen signals on the
headset.
Each listen signal of the four channels can inde-
pendently be placed:
- on the left or right can.
- on both cans.
15 GOOSENECK MICROPHONE
A high quality electret noise cancelling microphone.
A limiter prevents the mic pre-amp from clipping when
speaking close in the microphone. The microphone is
automatically disabled when a headset is used.
16 LOUDSPEAKER
A high quality loudspeaker driven by a 1.3 Watt
amplifier. The speaker will switch off as soon as a
headset is connected. It can be switched on again by
pressing the Speaker on/off switch.
17 AUX (per channel)
By pushing the aux button of a channel, the auxiliary
signal is routed to the corresponding channel. With
these pushbuttons the auxiliary input can be routed to
any or all channels separately. (To adjust the volume
of the auxiliary, see point 17 AUX Level / IFB DIM.
8 User Manual PS 4379 - Issue 1 © 2007 ASL Intercom, Utrecht, The Netherlands