Roll ILCA Simulator Performance Tests-continued

TM 55-4920-430-13

(3), Connect the positive terminal of No. 1 dc power supply to one side of the decade resistor. Con-

nect the other side of the decade resistor to J1-NN. Connect the negative side of the power supply to Jl -

MM. Set the decade resistor to 1000 ohms.

(4) Connect the digital multimeter across the decade resistor, positive lead of the multimeter con-

netted to the positive output of the power supply. Set multimeter to the 2 volt DC range.

(5) Adjust the output of the power supply for +0.100 volt dc on the digital multimeter.

NOTE

This applies approximately 0.1 milliampere of input current to J1-

(6) Disconnect digital multimeter from power supply and decade resistor. Connect the digital

multimeter set to measure 20-volt ac to receptacle pins J1-s (line) and J3-AA. The multi meter shall in-

dicate less than 0.03 volt ac.

(7) Connect No. 2 power supply across receptacle pinsJ3-A (+) and J1-C.

NOTE

When a test includes a requirement that an ac voltage be in-phase or

out-of-phase, oscilloscope channel A must be connected across the

digital multimeter. Oscilloscope channel B must be connected to the ac

source and the oscilloscope externally triggered from the ac source.

(8) Adjust the output of No. 2 power supply to +28 volt dc. Monitor the Feedback No. 1 output on

the digital multimeter. Within 1.6 to 2.4 seconds the multimeter shall indicate 3.0 volts ac out-of-phase.

The indication shall rise to 4.45 to 5.05 volt ac, out-of-phase.

(9) Set the ROLL switch to RESET. The digital multimeter shall indicate less than 0.03 volt ac.

( 10) Disconnect the positive lead of the multi meter from receptacle pin J1-s. Connect it to recep-

tacle pin J1-j.

(11) Set the ROLL switch to OPERATE. Monitor the Feedback No. 2 output on the digital mul-

timeter. Within 1.6 to 2.4 seconds, the multimeter shall indicate 1.5 volts ac out-of-phase. The indica-

tion shall rise to 2.18 to 2.58 volts ac, out-of-phase.

(12) Set the ROLL switch to RESET. The multi meter shall indicate less than 0.03 volt ac.

(13) Disconnect the positive lead of the digital multi meter, from receptacle J1-j. Connect it to

receptacle pin J1-m.

(14) Set the ROLL switch to OPERATE. Monitor the Feedback No. 3 output voltage on the

digital multimeter. Within 1.6 to 2.4 seconds, the multimeter shall indicate 1.5 volt ac, out-of-phase.

The indication shall rise to 2.18 to 2.58 volt ac, out-of-phase.

(15) Set the ROLL switch to RESET. The multimeter shall indicate less than 0.03 volt ac.

(16) Reduce the output of the power supplies to 0.

(17) Disconnect No. 2 power supply.

(18) Disconnect the multi meter.

(19) Disconnect No. 1 power supply and decade resistor.

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