OPERATION MANUAL
NAV-402AP-3
1-2-3
Page 6
Sep 1/04
3.12 GLIDE SLOPE OPERATION
(TYPICAL CONTROL SETTINGS)
STEP PROCEDURE
1. MONITOR METER FUNCTION Switch
RF to verify proper leveling of internal
Signal Generator on the MONITOR
Meter.
100% to verify or set 40% modulation of
each modulating tone and set course
centering on the MONITOR Meter.
2. COUNTER MODE Switch
GEN to read out the Signal Generator
frequency on the DIGITAL Display when
operating in fixed (FIXED) or variable
(VAR) modes.
3. FREQUENCY MODE Switch
G/S FIXED is mandatory in ramp
operation and is used on bench for a
fixed channel center frequency.
G/S VAR to check all channel bench
operation. Set VAR FREQ Controls to
select the desired channel in
50 kHz steps.
4. CRYSTAL HI/LO Switch (FREQUENCY
MODE Switch set to G/S FIXED
HI for 334.7 MHz RF output
LO for 329.6 MHz RF output.
5 TUNE Control
Adjust until TUNE Indicator stops
illuminating, indicating Signal Generator
is in the fine tune range.
6. FINE TUNE switch
Press and adjust TUNE Control until
MONITOR Meter indicates least
deflection from left.
7. OUTPUT ATTENUATOR Control
Use as needed to establish Receiver
sensitivities.
8. RF OUT Connector
Connect to Receiver Antenna Connector,
or attach Antenna in ramp operation.
STEP PROCEDURE
9. G/S DDM Control
Use steps for precise amounts of
deflection and flag tests.
10. G/S VAR DDM Control
Use to check Auto-pilot Servos, meter
stickiness, etc.
11. MASTER MOD LEVEL Control
Set to CAL for 40% each course tone or
variable from 3% to 75%.
12. PWR/BAT Switch
PWR to use external ac line power
through the AC IN Connector.
BAT to initiate operation using internal
Battery power.
13. AVG/PEAK LOC XMTR Switch
(FREQUENCY MODE Switch set to G/S
FIXED)
PEAK LOC for simultaneous G/S and
LOC output.
