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Page Title:
Chapter 3. OPERATING INSTRUCTIONS |
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  TM 11-6625-441-12
CHAPTER 3
OPERATING INSTRUCTIONS
3-1. Operator's Controls
Table 3-1. Operator's Controls - Continued
Control, indicator or connector
Function
INPUT SEL 3-position rotary
Table 3-1 lists and describes those controls,
Applies AUDIO OSC input to
switch.
i n d i c a t o r s and connectors used by the operator of
interphone control audio
input circuits, as follows:
interphone
test set.
Switch
Table 3-1. Operator's Controls
Action
position
Function
Control, indicator or connector
Applies audio to
R
POWER-OFF switch
In POWER position, turns on
the receiver
the interphone test set. In
circuit
OFF position, turns off the
selected by
interphone test set.
RECEIVER
KEYING switch (spring-
In RADIO position, energizes
SEL switch.
loaded; normally in
radio transmission control
Applies audio to
T
midposition).
circuit of the interphone con-
transmission
trol.
audio input
In mid position, interphone
circuit, when
control is in the receiving
SIGNAL
position.
switch is set
In INTER position, energizes
to METER.
i n t e r p h o n e transmission
Applies audio to
control circuit of the inter-
private
phone control.
interphone
line and
input
a. In METER position, applies
SIGNAL switch (spring-
circuits.
A U D I O OSC input to
loaded; normally in
Applies audio oscillator input to
RECEIVER SEL switch.
transmission audio input
METER position).
interphone control receiver
Nine-position rotary on
o f interphone control,
TS-1588/AIC; ten position
c i r c u i t corresponding to
when INPUT SEL switch
selected positions as follows:
rotary on TS-1588A/AIC.
is set to T. Also applies the
Switch
interphone control output
Action
position
( s e l e c t e d by OUTPUT
OFF
Deactivates
SEL switch) to OUTPUT
audio inputs.
MTR binding posts.
Applies audio
1 through 4
b. In HD MIC position, applies
input to
HDST MIC audio to
receivers 1
transmission audio input
through 4.
of the interphone control.
Applies audio
5
Also applies selected in-
input to
terphone control output to
marker
HDST MIC jack.
beacon
receiver.
Applies audio
6
OUTPUT SEL 4-position
Selects and applies audio out-
input to
rotary switch.
put of the interphone control
VHF
to OUTPUT MTR or HDST
navigation
MIC connectors as follows:
receiver.
Switch
Applies audio
7
position
Action
input to
R
Selects headset
navigational
audio
low
output.
frequency
T
Selects
receiver.
transmission
Applies audio
INTER
audio
input to
output.
private
I
Selects
interphone
interphone
line and
line audio
interphone
input.
receiver.
C
Not used.
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