TM 11-5826-225-35
Figure 2-27. Inverter voltage diagram
Section V. TROUBLESHOOTING ANTENNA AS1863/ARN83
b. Set the loop test fixture selector switch to
216. Test Setup
position 1.
Troubleshooting Antenna AS-1863/ARN-83
c. Set controls of Q meter for a frequency
consists of measuring the Q of the loop coils
using `Q Meter TS617/U and the loop test
of 1.0 megacycle. Adjust capacity control for
maximum Q. The capacity required for maxi-
fixture supplied with Test Set, Direction Finder
mum Q should be 140 to 280 picofarads.
Set AN/ARM-93. The loop antenna test setup
is shown in figure 228.
d. Set test fixture switch to position 2.
a. Mount Q Meter TS-617/U on the four
e. Using the same frequency as in c above,
large banana plugs (P2 through P5) of the
adjust Q meter capacity control for maximum
test set loop test fixture. Connect J1 of the
Q . The capacity required for maximum Q
should be 140 to 280 picofarads.
fixture.
2-43
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