Honeywell bendis king KLN 94, Maintenance Manual

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BENDIX/KING KLN 94
Page 5-10 15599M00.JA Rev 0, Sept/2000
J. Press the ALT button on the unit. The annunciators should toggle between the high
and low states each time the ALT button is pressed.
K. If no failure is indicated, check “OK” on the Final Data Sheet.
L. Press the button labeled DIR (DIRECT TO) on the unit.
M. Check for a DC voltage between (-100mV and -900mV) or (100mV and 900mV) on
the TO/FROM FLAG output (THTP13, THTP14).
N. If no failure is indicated, check “OK” on the Final Data Sheet.
5.2.4.6 DEVIATION OUTPUT TESTS
A. Set the deviation select switch (S17) to the lateral position.
B. Connect a DC voltmeter to the deviation output (THTP10, THTP11).
C. Press the MSG button several times. Each time the MSG button is pressed, the out-
put voltage on the voltmeter should toggle between 75mV, 0mV, and
-
75mV.
D. Set (S17) to the vertical position and repeat step C.
E. If no failure is indicated, check “OK” on the Final Data Sheet.
5.2.4.7 SERIAL OBI OUTPUT
A. Connect a DC voltmeter to the OBI Data output (THTP5).
B. Check for a DC voltage of 9.0VDC
±
1.35VDC for a high reading, and less than
1.0VDC for a low.
C. Press the ALT button on the unit to toggle between a high and low.
D. If no failure is indicated, check “OK” on the Final Data Sheet.
5.2.4.8 OBS TEST
A. Connect a frequency counter to the OBS OUT output (THTP12).
B. Check for a reading of 450Hz
±
4Hz.
C. Connect an oscilloscope to the OBS OUT output (THTP12).
D. Check for an AC reading of 11
±
1Vp-p.
E. Adjust the Bomar bearing knob.
F. Verify the reading of the OBS from the unit is the same as the Bomar bearing.
NOTE:
If OBS reading is not the same, calibrate per the pro-
cedure in the KLN 94 installation manual.
G. If no failures are indicated, check “OK” on the Final Data Sheet.
5.2.4.9 DISCRETE INPUT TEST