TM 9-4910-663-34
(13)
Set D.C. VARIABLE VOLTS switch (S10) to the ON position.
(14)
Set MASTER LOAD DISCONNECT switch (S8) and LOAD SELECTION 0-25 AMPs/0-12.5 AMPS switch
(S24) to the ON position.
(15)
Adjust DC VARIABLE POWER SUPPLY 0-32 VDC control (T5) to provide a 10 volt indication on DC
VOLTMETER OUTPUT VOLTAGE meter (M2).
(16)
Adjust VARIABLE LOAD control (R32) clockwise to provide a 6 to 8 ampere indication on DC AMMETER
FIELD CURRENT meter (M7). Verify that DC AMMETER LOAD & STARTER OUTPUT CURRENT BATTERY CHARGE
CURRENT meter indicates 6 to 8 amperes, and the external DC millivoltmeter indicates 10 to 13 millivolts.
(17)
Press DC AMMETER LOAD & STARTER OUTPUT CURRENT BATTERY CHARGE CURRENT PRESS
FOR BATTERY CHARGE RATE switch (S15) momentarily, and check to see that the indications on the external DC
millivoltmeter and DC AMMETER LOAD & STARTER OUTPUT CURRENT BATTERY CHARGE CURRENT meter (M3)
both drop to zero while the switch is pressed.
(18)
Set DC AMMETER LOAD & STARTER OUTPUT CURRENT BATTERY CHARGE CURRENT RANGE
switch (S14) to the X3 position, then to the X10 position. Check to see that DC AMMETER LOAD & STARTER OUTPUT
CURRENT BATTERY CHARGE CURRENT meter (M3) indicates 6 to 8 amperes on the appropriate scale for each
switch position.
m.
AC Voltmeter Output Meter Circuit.
(1)
Set all test stand controls to the preliminary settings listed in table 2-2.
(2)
Set AC VOLTMETER OUTPUT VOLTAGE RANGE switch (S27, fig 2-4) to the X1 position.
(3)
Set DC VOLTMETER OUTPUT VOLTAGE SELECT switch (S11) to the VAR position, and set DC
VOLTMETER OUTPUT VOLTAGE RANGE switch (S12) to the X1 position.
(4)
Connect the positive lead of an external 0-50 volt DC voltmeter to the right calibration jack (facing the
panel meter) for AC VOLTMETER OUTPUT VOLTAGE meter (M6), and connect the negative lead of the external DC
voltmeter to the left calibration jack.
(5)
Set AC VOLTMETER OUTPUT VOLTAGE SELECT switch (S28) to the CIRCUIT T1-T2 position.
(6)
Connect a test lead between the positive DC VARIABLE VOLTS OUTPUT binding post (fig 2-5) and the
ALTERNATOR (T1) binding post (fig 2-6), and connect a second test lead between the negative DC VARIABLE VOLTS
OUTPUT binding post and the ALTERNATOR (T2) binding post.
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