barfield DC400A - Page 54

61-101-00802.EF2 (REV. G) CH. 3
January 7, 2015 Page 40 of 44
(34) Press and hold the PRESS TO READ CAP (pF) pushbutton while
adjusting the CAP SIM (pF) control knob to obtain a test set reading
of 178.9 pF (UA and UB) or 185.0 pF (UC and UE).
(35) Release pushbutton.
(36) Rotate the TEST FUNCTION switch to IND AMP.
(37) Verify the indicator reads 300 ±35 lbs.
(38) Rotate the TEST FUNCTION switch to CAP SIM CAL (NORM SYS).
(39) Set the CAP SIM (pF) 100’s thumbwheel to 2 for all 1900 models.
Set the 10’s thumbwheel to 0 (UA and UB) or to 1 (UC and UE).
(40) Press and hold the PRESS TO READ CAP (pF) pushbutton while
adjusting the CAP SIM (pF) control knob to obtain a test display of
201.2 pF (UA and UB) or 210.0 pF (UC and UE).
(41) Release the pushbutton.
(42) Rotate the TEST FUNCTION switch to IND AMP.
(43) Verify the indicator reads 600 ±35 lbs.
(44) Rotate the TEST FUNCTION switch to CAP SIM CAL (NORM SYS).
(45) Set the CAP SIM (pF) 100’s thumbwheels to 2. Set 10’s thumbwheel
to 2 (UA and UB), or to 3 (UC and UE).
(46) Press and hold the PRESS TO READ CAP (pF) pushbutton while
adjusting the CAP SIM (pF) control knob to obtain a test set display of
223.6 pF (UA and UB), or 236.0 pF (UC and UE).
(47) Release the pushbutton.
(48) Rotate the TEST FUNCTION switch to IND AMP.
(49) Verify the indicator reads 900 ±35 lbs.
(50) Rotate the TEST FUCTION switch to CAP SIM CAL (NORM SYS).
(51) Set the CAP SIM (pF) 100s thumbwheel to “2”. Set the 10s
thumbwheel to “4” for the UA and UB or “6” for the UC and UE serial
numbers.
(52) Press and hold the PRESS TO READ CAP (pF) pushbutton while
adjusting the CAP SIM (pF) control knob to obtain a test set display of
246.0 pF for the UA and UB or 261.0 pF for the UC and UE serial
numbers.
(53) Rotate the TEST FUNCTION switch to IND AMP.
(54) Verify the indicator reads 1200 +/-35 lbs.
(55) Set the 28 VDC power supply to OFF.
(56) Set the test set ON / OFF switch to OFF.
D. Disconnecting/Reconfiguring
(1) Disconnect the 28 VDC power supply.
(2) Disconnect the test set IND connector from the indicator or adapter
cable.
(3) If using a 15 pin connector, disconnect the adapter cable from the
indicator.