61-101-00802.EF2 (REV. G) CH. 3
January 7, 2015 Page 36 of 44
(14) With the INS TEST POINT switch at SIG/RTN position, verify the test
set display shows a value between 1500 and an “over range” of 1.
Note: If testing the 1900/1900C, UA and UB, an over range also
appears when the INS TEST POINT switch is in LO-Z/RTN
position and P/N 114-389001-17 Probe (Gull Airborne) is
installed in the collector tank.
(15) Verify conductance is within specifications. If test results are outside
limits, repeat test.
(16) Set ON/OFF switch to OFF.
(17) Disconnect Probe adapter from Probe.
(18) Disconnect Probe adapter from T/S.
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