HP 3336A Operating Manual page 107

d. Set the electronic counter controls to measure the average time interval from input A ©
to input B (T.1.AVG AB). Set the counter to average 10' intervals. Note, the gate time to
average 107 intervals will be 1 second. Do not use the first reading displayed after changing
phase.
e. Adjust the 3336 (DUT) output phase until the counter displays a time interval from 190
ns to 210 ns. Each degree incremented on the 3336 will cause a 2.8 ns change in the counter
display.
f. Assign zero phase to the 3336 signal output. This is a shifted function of the PHASE
key.
i. Record the electronic counter reading with the test phase shift (T2).
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