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TM 55-4920-383-13&P
Section II. OPERATION
2-3.
Turn-On Procedure.
To turn the Test Set on proceed as follows:
a.
Position Test Set ON/OFF switch (20, figure 2-1) to OFF.
b.
Connect one end of Test Set power cable (see table 1-2) W1 to Test Set input power
connector J1 (16). Connect the other end of W 1 to either power adapter W2 or W3. Connect
the free end of W2 or W3 to 115 VAC 400 Hz source. This connection requires no attention
to polarization, since neither side of the power circuit is grounded in the Test Set.
WARNING
The Test Set must be grounded prior to connection to aircraft fuel gage system
under test.
c.
Connect the Test Set GND terminal (15) to a source of ground potential using test
lead W10. Suitability of grounding connection depends upon where the Test Set is being
used. If the Test Set is in use at a bench in the laboratory or field shop, make connection
to the bench ground strap. If the Test Set is being used in an aircraft, attach the ground
connection to any convenient point on the aircraft’s ground bus or structure that is free of
paint or other insulating material.
d.
Connect Test Set accessory cables, as required, to unit or system to be tested.
(See table 1-2 and para. 2-6.)
e.
Position Test Set ON/OFF switch (20) to ON. No warm up time is required
before performing specific
2-4.
Turn-off Procedure.
tests.
To turn off Test Set proceed as follows:
a.
Position Test Set ON/OFF switch (20, figure 2-1) to OFF.
2-10
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