Page 5-32
400 SERIES MAINTENANCE MANUAL
Rev. C
P/N 190-00140-05
5.7.4
Navigation Assembly I/O Tests
5.7.4.1
Localizer Course Deviation Test
1.
Display the VOR/LOC/GS CDI Test Page (Figure 5-6).
Figure 5-6. VOR/LOC/GS CDI Test Page
2.
Display the following on the VOR/LOC/GS CDI Test Page and verify the following voltages,
measuring across VOR/LOC +LEFT (J6-3) with respect to VOR/LOC +RIGHT (J6-4).
Full Right ___________ (-150 ±15 mV)
Standard Right ___________ (-90 ±9 mV)
Centered ___________ (0 ±4.5 mV)
Standard Left ___________ (+90 ±9 mV)
Full Left________ (+150 ±15 mV)
5.7.4.2
To/From Deflection Output Characteristic Test
Verify the TO/FROM (VOR/LOC +TO) output is capable of driving up to three meter loads of
200 ohms each.
5.7.4.3
To/From Deflection Accuracy Test
1.
Display TO.
2.
Measure VOR/LOC +TO J6-1 with respect to VOR/LOC +FROM J6-2.
3.
Verify the following output:
TO/FROM (VOR/LOC +TO) ______ (225
r
75 mV)
4.
Display FROM.
5.
Measure VOR/LOC +TO J6-1 with respect to VOR/LOC +FROM J6-2.
