Garmin GMA 340H User Manual

5.14.10.3.4 External Marker Lamp Outputs
Pilot Button
Active
Inactive
1. On the GMA 340, select HI sensitivity.
2. Set AFGEN 1 frequency to 400 Hz. Set RF level to 2.0 mV.
3. Activating the appropriate beacon, verify the following outputs:
I Crew Button I ICS Isolation Mode
Inactive
PILOT
-1 Active CREW
5.14.10.3.5 Middle Marker Sense
Pilot Button
1. Set AFGEN 1 frequency to 1300 Hz.
2. Verify the voltage at J1 pin 39 is from 40 to 60% of the value measured at J1 pin 38.
3. Verify the voltage at J1 pin 39 is NGT 0.5 V while the TEST button is pressed and held.
11 Crew Button 11 ICS Isolation Mode
5.14.10.4 Marker Mute
I
Active
Inactive
1.
2.
3.
4.
5.
6.
7.
8.
9.
11 harm:; (( 1
Turn RF output off for at least 1 second and then reapply.
On the test panel press WIPE and monitor PILOT HEADSET L with the HP-8920B.
On the GMA 340, select MKWMUTE.
Set RF level to 4 mV.
Verify audio is present at PILOT HEADSET
L.
On the GMA 340 press MKWMUTE.
Verify no audio is present at PILOT HEADSET L.
Verify MKWMUTE annunciator LED remains lit.
Turn RF output off for at least
1 second and then reapply.
10. Verify audio is present at PILOT HEADSET L.
11.
On the GMA 340 press MKWMUTE.
12. Verify
no audio is present at PILOT HEADSET L.
13. Verify MKWMUTE annunciator LED remains lit.
14. Change AFGEN 1 frequency to 3000Hz.
15. Verify audio is present at PILOT HEADSET L.
5.14.11 Isolation Mode Operational Checks
Three intercom isolation modes are supported:
I II Inactive II ALL
Inactive
I
190-00149-02 Rev B 5-15
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