barfield DC400, Инструкция пользователя

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61-101-00802.EF2 (REV. G) CH. 3
January 7, 2015 Page 43 of 44
D.
Test
(1) Set the test set ON/OFF switch to ON.
(2) Set the CAP SIM (pF) 100’s and the 10’s thumbwheels to the digits
necessary to adjust the test set display to a MAIN/TOTAL nominal
value listed in Table 2 for the aircraft-under-test.
(3) Press and hold the PRESS TO READ CAP (pF) pushbutton while
adjusting the CAP SIM (pF) control knob to obtain a test set reading
MAIN/TOTAL Nom (nominal) value reading for the aircraft referenced
in Table 2.
(4) Close the circuit breakers.
(5) Connect the aircraft battery and turn the battery switch to ON.
(6) Rotate the TEST FUNCTION switch to IND AMP.
Caution: Do not tap bezel of instrument to vibrate. To remove friction,
gently tap adjacent panel or rear housing of indicator
before taking readings.
(7) Verify the aircraft indicator shows a reading slightly below zero
(approximately one needle width).
(8) If pointer position is not acceptable, adjust EMP 1/E 1 or E/EMP
adjustment on rear of indicator for the pointer position.
(9) Rotate the TEST FUNCTION switch to CAP SIM CAL (NORM SYS).
(10) Set the 200 (pF)/1000 (pF) switch to 1000 (pF).
(11) Set the CAP SIM (pF) 100’s and the 10’s thumbwheels to the digits
required to adjust the test set display to a MAIN/TOTAL nominal
value referenced in Table 3.
(12) Push and hold the PRESS TO READ CAP (pF) pushbutton while
adjusting the CAP SIM (pF) control knob to obtain the test set reading
for the aircraft listed in Table 3.
(13) Release the pushbutton.
(14) Rotate the TEST FUNCTION switch to IND AMP.
(15) Verify the indicator reads 1400 lbs (for serial numbers UA and UB) or
1600 lbs (for UC and UE).
(16) If the indicator does not give the appropriate reading, adjust the
F/FULL at the rear of indicator to obtain the value.
Note:
AUX calibration
is applicable only for 1900C/1900D (SN’s UC
and UE). If testing UA and UB, skip to step (26).
(17) Rotate the TEST FUNCTION switch to CAP SIM CAL (NORM SYS).
(18) Set the 200 (pF)/1000 (pF) switch to 200 (pF).
(19) Set the MAIN/TOT – AUX/NAC switch to AUX/NAC.