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Page Title:
TABLE 1-3. RF MODULATION ASSEMBLY CONTROLS, INDICATORS AND CONNECTORS |
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 TM 11-6625-2884-30/NAVAIR 16-35TS3615-2
DEVICE
FUNCTION
REFERENCE
Controls
Provides overcurrent protection to the
115v Ac 1-1/2 amp
1
circuit breaker CB1
RF modulation assembly.
Selects one of three preset RF
FREQ SEL F1/F2/F3
2
frequencies.
three position toggle
switch S1
Controls level at RF OUT connector (14)
TRANSMIT ATTENUATOR
3
in 10 dB steps.
0-60 dB rotary control
AT4
Controls level at RF OUT connector (14)
4
TRANSMIT ATTENUATOR
in 1 dB steps.
0-9 dB rotary control
AT3
Permits selection of either pulse or
OUT SEL PULSE/CW
5
CW RF output.
toggle switch S3
Permits selection of one of three preset
PRI OFF/VAR PRI/A-W/
6
PRI's, or variable PRI under control of
A-F/B rotary control
PRI MICROSEC switches (7).
S7A/B
Sets PRI when switch (6) is in VAR PRI
PRI MICROSEC three
7
position. PRI range is 300 to 999 us
section thumbwheel
in steps of 1 us.
control S5
Sets pulse width in steps from O.1 us to
PW MICROSEC two
8
9.9 us.
section thumbwheel
control S4
Sets CS frequency in 1 Hz steps from 1
CS FREQ HZ two
9
Hz to 99 Hz.
section thumbwheel
control S2
Permits selection of one of ten preset
CS MOD DEPTH DB rotary
10
CS modulation depths in discrete steps
control S6
from O to 25 dB.
Connectors
Supplies pulse sync.
SYNC PULSE J4
11
Supplies CS modulation sync.
SYNC CS J5
12
Supplies negative going blanking pulses.
BLANKING J6
13
Supplies modulated RF output.
RF OUT J1
14
Indicator
When lit, (green) shows the presence of
15
POWER DS1
-15 Vdc, confirming application of
115 Vac power to RF modulation assembly.
1-19
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