Garmin GNC 420 Maintenance Manual page 84

6. Verify the following output:
TO/FROM (VOR/LOC +TO) ______(-225 75 mV)
7. Display HIDE.
8. Measure VOR/LOC +TO (J6-1) with respect to VOR/LOC +FROM (J6-2).
9. Verify the following output:
TO/FROM (VOR/LOC +TO) ______ mV (0 mV 5 mV)
5.7.4.4 Course Deviation Flag Output Characteristic Test
Verify the Course Deviation Flag (VOR/LOC +FLAG) output is capable of driving up to three
meter loads of 1000 ohms each.
5.7.4.5 Course Deviation Flag Test
1. Display Flag 'HIDE'.
2. Measure VOR/LOC +FLAG (J6-3) with respect to VOR/LOC -FLAG (J6-4).
3. Verify the following output:
(VOR/LOC +FLAG) ______ (375 80 mV)
4. Display Flag 'IN VIEW'.
5. Measure VOR/LOC +FLAG (J6-3) with respect to VOR/LOC -FLAG (J6-4).
6. Verify the following output:
(VOR/LOC +FLAG) ______ mV (0 mV ±25 mV)
5.7.4.6 VOR/LOC Super Flag Output Test
1. Select flag 'HIDDEN'. Measure VOR/LOC SUPER FLAG OUT (J6-15) with respect to
GND (J6-41).
2. Verify the VOR/LOC SUPER FLAG OUT supplies not less than 500 mA.
3. Verify the output voltage is not less than PWR_IN minus 1.5 volts.
VOR/LOC SUPER FLAG OUT ______ (NLT PWR_IN minus 1.5 volts)
4. Select flag 'IN VIEW'. Measure VOR/LOC SUPER FLAG OUT (J6-15) with respect to
GND (J6-41).
400 SERIES MAINTENANCE MANUAL
P/N 190-00140-05
Page 5-33
Rev. C