Tektronix 070-8462-03, Instruction Manual

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Adjustment Procedure
6–10
1735 HD High Definition Waveform Monitor
Figure 6–6: Adjusting clamp position and width
Refer to Figure 6–2.
10. Adjust Return Loss
a. Connect a precision 50
W
cable to the spectrum analyzer RF Input, and
another precision 50
W
cable to the TG Output.
b. Connect the TG Output cable to the RF Input on the RF Bridge.
c. Connect the RF Input cable to the RF Output on the RF Bridge.
d. Select Demod/TG on the spectrum analyzer and turn on the analyzer
Tracking Generator.
e. Set the spectrum analyzer Tracking Generator Fixed Level to 0.00 dBm.
f. Set the spectrum analyzer Span/Div to 10 MHz and the resolution
bandwidth to 3 kHz.
g. Set the Reference Level to the first major division from the top on the
spectrum analyzer.
h. Set the vertical scale to 10 dB.
i. Remove one of the cables from the RF Bridge.
j. Set the spectrum analyzer cursor to 30 MHz and then set the marker to
30 MHz.
k. Reconnect the cable to the RF Bridge.
l. Note the Reference Level Readout.
Main Board (A3)