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The monitor amplifier is provided with a volume control.
The output of the monitor amp-
lifier feeds into three relays, the operation of which is described later.
The outputs of
these three relays feed into the control room speaker and the studio speakers.
The set of push keys on the input of the monitoring amplifier permits the following
functions to be performed:
1.
MONITORING.
One button connects the input of the monitoring amplifier, through
proper bridging resistors, across the output of the program amplifier.
A program
on the air may be monitored in this manner.
2.
AUDITIONING.
One button as mentioned above feeds the output of the audition bus into
the monitoring amplifier, permitting the carrying on of an audition in one studio
while the other studio is on the air.
3.
CUEING.
A total of five buttons are provided for selecting any one of five monitor-
ing or cueing lines.
These five buttons and the monitor and audition buttons are
mechanically interlocked so that only one is on at a time.
Pressing any one button
releases the button previously depressed.
4.
TALK BACK.
Two buttons, associated with the seven buttons above but not mechanically
interlocked with same are used for talk -back, one for talk -back into Studio "A" and
the other for Studio "B".
Pressing either button connects the talk -back microphone
to the input of the monitor amplifier.
Depending on which button is pressed will
determine which studio speaker will be turned on.
This is more fully explained
below.
These two buttons, although not mechanically interlocked with the other seven
buttons on the input of the monitor amplifier are electrically interlocked so that
the talk -back microphone will always be placed on the input of the monitor amplifier,
when either button is pressed.
When the button is released, the connection previous-
ly made is restored.
(C)
REMOTE MEE OUR AID MOIR
The fourth set of interlocked push keys are used as follows:
1.
CUE.
Six buttons on this set of push keys connect to the six incoming remote lines.
The output of the six buttons are normally connected to the output of the monitor-
ing amplifier.
Pressing any one of the six buttons will feed the signal output of
the monitoring amplifier into the corresponding remote line, provided that the cor-
responding button of the push keys on the input of mixers #5 and $6 (mentioned
above) is not
in use.
2.
PHONE.
The phone jack allows listening to any one of the six remote lines by plac-
ing the Phone -Mon. switch in the "Remote" position.
Talking to the remote line can
be done by pressing either one of two push buttons associated with the six remote
cue push buttons.
When these two buttons are pressed, the talk -back microphone is
connected to the input of the monitoring amplifier and the output of the monitoring
amplifier is connected to the output of the remote cue buttons.
Thus, a conversa-
tion can be carried on with any of the six remote lines by throwing the Phone -Mon.
switch to "Remote", and holding down the remote line talk -back buttons.
The two
buttons are not mechanically interlocked with the six remote line cue buttons.
A ninth button interlocked with the six buttons is used as an "Off" position.
(D)
OYER -RIDE SWITCH
When this switch (K-9)
is thrown to the over -ride position, a signal on any of the six
remote lines (not
in use) will be heard over the monitor speaker.
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