TM 11-5895-846-14
Table 3-3. Downconverter, Operator's Control and Indicators
Item
Fig.
No.
Control, indicator or connector
Function
reference.
CONVERTER, FREQUENCY, ELECTRONIC CV-3201/TSC (DOWNCONVERTER)
1,
700 MHz IF Connector
Provides 700 MHz receive IF signal out to the modem.
2
SHF IN Connector
Input connector for received SHF signals.
3
RCVR FAULT Indicator
Illuminates when fault occurs in downconverter, or the LNA or
BITE (antenna mounted electronics).
4
MONITOR Meter
Provides an indication of applicable voltage and signal levels
as selected by MONITOR switch.
5
POWER Indicator
Illuminates when AC power is applied to the unit.
6
FAULT Indicator
When illuminated.
1 MHz LOOP
Indicates a fault in the 1 MHz loop circuit
1 kHz LOOP
Indicates a fault in the 1 KHz loop circuit
7
OUT OF LOCK Indicator
Illuminates when the frequency synthesizer is not operating
on the selected frequency.
8
FREQ SELECT MHz Switches
Five thumbwheel switches for selecting assigned receive
operating frequency in 1 kHz increments.
9
5 MHz OUT Connector
Provides 5 MHz standard output signal (for test purposes only.)
10
SYNTH MON Switch
Provides for switching of signals to MONITOR meter for fau lt
isolation of synthesizer. This switch is enabled when
MONITOR switch is placed in SYNTH position.
11
5 MHz IN
Input connector for 5 MHz external standard signal.
12
FREQ TUNE/MHz Dial
Adjusts internal oscillator to receive operating frequency a
indicated on MHz dial.
13
TEST SIGNAL Connector
Provides SHF spectrum output test signal from synthesizer.
14
Power Switch
Applies AC power to the unit when in the ON position.
15
MONITOR Switch
Provides for switching of signals to MONITOR meter for
fault isolation purposes.
16
700/70 Switch Provides
700 MHz or 70 MHz operation.
17
TRACK IF Connector
Provides 70 MHz IF antenna tracking signal out to the
antenna control.
18
70 MHz Connector
Provides 70 MHz receive IF signal out to the modem.
Table 3-4. Antenna Control, Operator's Control and Indicators
Item
Fig.
No.
Control, indicator or connector
Function
reference.
CONTROL, ANTENNA C-10273/TSC (ANTENNA CONTROL)
1
POSITION Digital Display
Provides a digital display of cross EL degrees.
2
EL DEG Digital Display
Provides a digital display of EL degrees.
3
TRACK SIGNAL
o LOSS
Illum. when ant. tracking signal has been lost.
o IF/VIDEO
Switches type of track signal
4
AXIS LIMIT Indicators
One of the indicators (UP, RIGHT, DOWN, LEFT) will be
illuminated when antenna travel has reached its limit in
that direction.
5
SAFETY INTLK Indicator
Illuminates when a safety interlock is open.
6
SCAN FAULT Indicator
Illuminates when a scan fault occurs in the unit.
7
REMOTE Indicator
Illuminates when remote control is connected to antenna entry
panel. Items 10, 11 and 12 are disabled; remote control is
enabled.
8
MONITOR Meter
Provides an indication of applicable signal levels as selected
by MONITOR switch.
9
MONITOR Switch
Provides for switching of signals to MONITOR meter for fault
isolation purposes.
10
MODE Switch
Provides for placing unit in selected (ACQUISITION, MANUAL
,or AUTO TRACK) operating mode.
11
AXIS CONTROL Switch
When in MANUAL mode and moved to selec ted position (UP,
RIGHT, DOWN, LEFT) will cause antenna to travel in
selected direction.
12
MGC Control
Adjusts gain of communications tracking module in unit.
POWER:
13
60 V Switch
Applies 60 Vdc to unit when in the ON position.
14
24 V Switch
Applies 24 V Vdc to unit when in the ON. position.
15
Power Switch
Applies ac power to unit when in the ON position.
16
Power Indicator
Illuminates when ac power is applied to unit.
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