Sandel ST3400H HeliTAWS, Руководство по установке

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7.8 Air Data Input (Optional Interface)
Follow Aircraft Manufacturer’s instructions and connect Pitot/Static test box to the aircraft
Pitot/Static system.
Select ST3400H to Maintenance Page 3: AIRDATA monitor the air data input.
SIGNAL FUNCTION TOLERANCE
RECORD
VALUE
PASS FAIL N/A
Pressure Altitude PA
Verify pressure altitude is
/- 500 Feet of current
pressure altitude.
Pressure Altitude
Change
PA
Vary pressure altitude input
by 500’ and verify that
change on pressure altitude
value is 500’ +/- 50’.
7.9 Heading Input (Optional Interface)
Select ST3400H to Maintenance Page 4: HEADING
SIGNAL FUNCTION RESULT PASS FAIL N/A
Heading Value. HDG
Verify the Magnetic Heading value matches
the aircraft heading displayed on HSI or wet
compass /-4 Degrees.
Heading Valid
pull circuit
breaker to go
invalid
HDG VALID
Verify value of Mag Heading Valid indicates,
“INVALID DATA”.
Heading Valid,
reset circuit
breaker.
HDG VALID Verify value of HDG Valid indicates, “VALID”.
7.10 Discrete Inputs (Optional Configuration)
Check all discrete inputs that are interfaced to Sandel ST3400H. See Sandel ST3400H
installation wiring diagrams for aircraft. NVIS feature may require additional installation
approval.
Select ST3400H to Maintenance Page 5: DISCRETES.
SIGNAL FUNCTION RESULT PASS FAIL N/A
NVIS NVIS Verify that the NVIS display annunciation goes
on and off with operation of the switch
Back Course BCKCRS Verify BCKCRS operates when back course is
selected or the HSI course pointer is >90
degrees from the lubber line.
82046-IM-K ST3400H INSTALLATION MANUAL Page 7-4