Sandel ST3400 - Adf Input Tests; Heading Input Tests

7.2.13 ADF INPUT TESTS
Select ST3400 to Maintenance Page 5: ADF & HDG.
SIGNAL
FUNCTION
RESULT
PASS
FAIL
Tune #1 ADF to
station and select
ADF Mode.
ADF1 Verify the #1 ADF bearing value
matches bearing to the station within
+- 4 Degrees
#1 ADF Valid ADF1 VALID Verify value of #1 ADF Valid
indicates “VALID”
Tune #1 ADF to
station and select
ANT Mode.
ADF1 VALID Verify value of #1 ADF Valid
indicates, “INVALID DATA”
Tune #2 ADF to
station and select
ADF Mode.
ADF2 Verify the #2 ADF bearing value
matches bearing to the station within
+- 4 Degrees
#2 ADF Valid ADF2 VALID Verify value of #2 ADF Valid
indicates “VALID”
Tune #2 ADF to
station and select
ANT Mode.
ADF2 VALID Verify value of #2 ADF Valid
indicates, “INVALID DATA”
7.2.14 HEADING INPUT TESTS
Select ST3400 to Maintenance Page 5: ADF & HDG
SIGNAL
FUNCTION
RESULT
PASS
FAIL
#1 Heading System
use the free mode and
slew the heading 360
degrees.
HDG1 Verify the #1 Mag Heading value
matches the aircraft heading
displayed on HSI within +-4 Degrees
#1 Heading Valid pull
circuit breaker to go
invalid
HDG1 VALID Verify value of #1 Mag Heading
Valid indicates, “INVALID DATA”.
#1 Heading Valid,
reset circuit breaker.
HDG1 VALID Verify value of #1 HDG Valid
indicates, “VALID”.
#2 Heading System
use the free mode and
slew the heading 360
degrees.
HDG2 Verify the #2 Mag Heading value
matches the aircraft heading
displayed on HSI within +-4 Degrees
#2 Heading Valid pull
circuit breaker to go
invalid
HDG2 VALID Verify value of #2 Mag Heading
Valid indicates, “INVALID DATA”.
#2 Heading Valid,
reset circuit breaker.
HDG2 VALID Verify value of #2 HDG Valid
indicates, “VALID”.
7-24 ST3400 INSTALLATION MANUAL 82002-IM-L