Ifb Function - ASL INTERCOM PS 6379 MK2 User Manual

10.0 IFB FUNCTION

With the IFB Mode switches #36 on the rear panel, channel E respectively channel F can
be put into IFB Mode, which is indicated on the front panel by lit IFB Mode LED indicators.
The channel is now a so-called IFB channel, used for one way communication from i.e. a
director/producer to a talent in a broadcast environment: If the director pushes the TALK
button of an IFB channel, the talent hears the producer but may also listen to an auxiliary
signal. The talent has a headphone or an earpiece, connected to a PS-10 analog IFB re-
ceiver (1 channel / listen only) or a standard 1-channel ASL analog beltpack.
IFB channel Properties:
The TALK button of an IFB channel is momentary only and must be kept pushed
•
while talking.
Whilst the TALK button of an IFB channel is kept pushed the level of the AUX signal
•
to that channel is dimmed automatically. This is the so-called IFB Dim Factor
which can be adjusted (0% to 100%) by turning knobs #23 for each IFB channel
separately.
For as long as the TALK button of an IFB channel is kept pushed, the TALK buttons
•
of the intercom channels are switched off automatically. To achieve that one can
talk to an IFB channel and to all intercom channels of which the TALK buttons are
enabled (the corresponding Talk LEDs were lit), the position of a certain DIP switch
has to be changed. See section 11.0, DIP switch A
For as long as the TALK button of an IFB channel is kept pushed, the Listen func-
•
tions of the intercom channels are disabled automatically (one does not hear the
communication on the intercom channels). To achieve that these Listen functions
are not disabled if an IFB TALK button is pushed, the position of a certain DIP switch
has to be changed. See section 11.0, DIP switch B
The CALL function of an IFB channel is automatically disabled (one can't send a Call
•
signal from and does not receive a CALL signal on such a channel)
Both the Mic Mute button (#7) and the Buzzer Mute button (#8) of an IFB channel
•
are automatically disabled. Pushing the ALL MIC MUTE button or the ALL BUZZER
MUTE button has no effect on a channel which is in IFB mode.
WARNING: A channel from another intercom system should via its system link connector
not be linked to a channel which is in IFB mode.
24