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Section IV. ADJUSTMENT PROCEDURES
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TM-11-5805-387-34-2 Modem Radion Teletypewriter MD-522A/RC (NSN
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LOOP CURRENT ADJUSTMENT
TM 11-5805-387-34-2
Adjustment precautions: Observe the following precautions when making adjustments.
Before making adjustments, make sure that the front panel meter reads + 20 VDC, indicating proper
regulated voltage.
Before starting a procedure, carefully read all steps to become familiar with them.
Use insulated test probes, or wrap test probes in insulated tape. Use a nonmetallic screwdriver. This will
prevent signals to the module cover from being accidentally shorted.
During adjustment, do not disconnect test equipment until instructed to do so.
Do not use adjustment procedures as a substitute for troubleshooting.
Make adjustments only if the value being measured is outside the given tolerance.
2-14. REGULATED VOLTAGE ADJUSTMENT
Test Equipment
Multimeter ME-26B/U
Test Connections
Connect multimeter's positive probe to capacitor C21.
Connect ground probe to ground.
Remove dust cover from receive audio module A1.
2-34

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