TM 11-5985-370-12
Section Ill. TROUBLESHOOTING
4-5. TROUBLESHOOTING GUIDLINES
Troubleshooting by Organizational Maintenance involves the use of the MULTIMETER AN/USM-223.
Before performing your troubleshooting or use your test equipment- MAKE SURE THAT THE OPERATOR/-
CREW TROUBLESHOOTING PROCEDURES IN THIS MANUAL HAVE BEEN DONE.
4-6. TROUBLESHOOTING THE MULTIMETER
This task covers:
a. Setup.
b. Testing.
Personnel Required:
INITIAL SETUP
1
Test Equipment
Special Environmental Conditions:
Multimeter AN/USM-223
None.
RADIO CABLE.
Connect the MULTIMETER as shown:
Use the LOWEST resistance range:
A good conductor gives a reading of 1 or 2 ohms.
An open or defective conductor gives a resistance of infinity.
4-3
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