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|  MIL-T-22939B(OS)
10 watts load resistor.
percent,
4.4.3.6 A 3000 ohms
10 watts load resistor.
4.4.3.7 A 1500
percent ohm,
4.4.3.8 An ac voltmeter capable of measuring 115 volts rms 400 Hz to an
percent of input +25
(Fluke Model 883 or equal).
accuracy of
4.4.4 Test procedure
The command step and command search
NOTE:
switches (identified on test set front panel
as STEP SWITCH and CS SWITCH, respectively)
are momentary contact switches having a normal
The CS SWITCH is activated
center position.
by an up movement to the ON position, while
the STEP SWITCH is activated by a left or
right movement to either the "L" or "R" posi-
tion.
4.4.4.1 The following test procedure shall be performed in the order
indicated:
4.4.4.2 Turn POWER OFF switch off (down) and LINE SIMULATOR switch
Leave all other switches in their normal position.
to OUT.
5 percent
4.4.4.3 Terminate the test set output circuit with the 3k
ohms, 10 watts load resistor.
4.4.4.4 Connect the power source of 4.4.3.3 to the appropriate input
receptacle of the test set. Adjust the supply voltage to 110 vrms, as
measured on the meter of 4.4.3.8.
The POWER lamp shall light,
4.4.4.5 Turn POWER OFF switch to on (up).
The POWER lamp shall go off.
4.4.4.6 Remove fuse.
The POWER lamp shall light.
4.4.4.7 Replace fuse.
4.4.4.8 Turn CS SWITCH to ON and hold.
4.4.4.8.1 using the meter of 4.4.3.2 measure 182 volts rms minimum,
400 Hz, across the load resistor.
4.4.4.8.2 Release CS SWITCH.
percent
4.4.4.9 Turn LINE SIMULATOR switch to IN, and replace the 3k
percent 10 watts load resistor.
10 watts load resistor with the 1.5k
resistor.
8
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