SCOPE MODULE A2 ALIGNMENT

TM 11-5805-387-34-2

2-18. SCOPE MODULE A2 ALIGNMENT

Teat Equipment

Teletypewriter Test Set TS-799AIUGM-1

Test Potentiometer, 600-ohms, 1/2-watt

Extender Cable

Test Connections

Perform the centering adjustment (para 2-17)

Make sure ON/OFF switch is in OFF position.

Remove scope module A2 and connect extender cable.

Remove metal cover on the left side of the module protecting component board Al.

Connect a 600-ohm, 1/2-watt test potentiometer between OUTPUT and GRD test points on transmitter

module A3.

Measuring with the multimeter, adjust the test potentiometer for minimum resistance between the wiper

and the terminal connected to the OUTPUT test point.

Connect the wiper of the test potentiometer to pin A of AUX RCVR AUDIO connector J1.

Adjust TS-799A/UGM-1 to operate on external loop power (supplied from the modem) and to supply an

R and Y test signal.

2-39