Garmin GMA 340H User Manual

5.14.10.2 High Sensitivity Test
Select HI sensitivity on the GMA 340.
5.14.10.2.1 Outer Marker (400 Hz)
1. Set AFGEN 1 frequency to 400 Hz. Set RF level to 280 pV.
2. Verify all three marker lamps are off.
3. Using the vernier knob, increase the
RF level until the beacon “0’ lamp is steady on.
4. Verify
RF level is from 300 to 500 pV.
5.14.10.2.2 Middle Marker (1300 Hz)
1. Set AFGEN 1 frequency to 1300 Hz. Set RF level to 280 pV.
2. Verify all three marker lamps are off.
3. Using the vernier knob, increase the
RF level until the beacon “M’ lamp is steady on.
5. Verify
RF level is from 300 to 500 pV.
4. Set RF level to ten times the threshold level.
5. Verify audio level is
NLT 500 mV.
5.14.10.2.3 AirwaysLnner Marker (3000 Hz)
1. Set AFGEN 1 frequency to 3000 Hz. Set RF level to 280 yV.
2. Verify all three marker lamps are off.
3. Using the vernier knob, increase the
RF level until the beacon “A” lamp is steady on.
4. Verify RF level is from 300 to 500 pV.
5.14.10.3 Low Sensitivity Test
Select LO sensitivity on the GMA 340.
5.14.10.3.1 Outer Marker (400 Hz)
1. Set AFGEN 1 frequency to 400 Hz. Set RF level to 1.3 mV.
2. Verify
all three marker lamps are off.
3. Using the vernier knob, increase the
RF level until the beacon “0” lamp is steady on.
4. Verify RF level is from 1.5 to 2.5 mV.
5.14.10.3.2 Middle Marker (1300 Hz)
1. Set AFGEN 1 frequency to 1300 Hz. Set RF level to 1.3 mV.
2. Verify all three marker lamps are off.
3. Using the vernier knob, increase the
RF level until the beacon “M’ lamp is steady on.
4. Verify RF level is from 1.5 to 2.5 mV.
5.14.10.3.3 Airwayshner Marker (3000 Hz)
1. Set AFGEN 1 frequency to 3000 Hz. Set RF level to 1.3 mV.
2. Verify all three marker lamps are off.
3. Using the vernier knob, increase the
RF level until the beacon “A” lamp is steady on.
4. Verify
RF level is from 1.5 to 2.5 mV.
5-14 190-00 149-02 Rev B
The document reference is online, please check the correspondence between the online documentation and the printed version.

Garmin GMA 340H Specifications

General

Brand	Garmin
Model	GMA 340H
Category	GPS
Language	English