400 SERIES MAINTENANCE MANUAL
Page 5-37
P/N 190-00140-05
Rev. C
5.7.5
Glideslope Final Tests
5.7.5.1
Glideslope Course Deviation Output Characteristic Test
1.
Apply a standard course deviation input signal to the unit.
2.
Measure GLIDUP (J6-32) with respect to GLIDDOWN (J6-31).
3.
Verify the deviation output voltages (GLIDUP) for the following conditions.
Full Scale Deflection
(0.175 ddM input signal):
________ mV (150 ±15 mV)
Greater than Full Scale Deflection (0.4 ddM input signal):
________ mV (300 ±30 mV)
5.7.5.2
Course Deviation Deflection Accuracy Test
1.
With a standard deflection ‘FLY DOWN’ condition (90 Hz dominant), verify the output is
-78 ±7.8 mV.
‘FLY DOWN’______ mV
2.
With a standard deflection ‘FLY UP’ condition (150 Hz dominant), verify the output is
+78 ±7.8 mV.
‘FLY UP’______ mV
5.7.5.3
Course Deviation Flag Test
1.
Select Flag ‘HIDDEN’.
2.
Verify the course deviation flag output is 375 ± 80 mV.
Course Deviation Flag ______ mV
3.
Select Flag ‘IN VIEW’.
4.
Verify the course deviation flag output is 0 mV ±25 mV.
Course Deviation Flag ______ mV
Содержание GNC 420
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