Figure 1-12.
Terminal impedance tests, block diagram.
(a) Connect the AN/USM-181 to the circuit under test as in A of
figure 1-12.
(b) Tune the oscillator to 1,000 Hz and adjust the AMPLITUDE control
to 0 dBm0 (same as normal signal at the TLP point of test).
(c) With switches S1 and S2 closed, measure the oscillator voltage
across the input circuit (V1).
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