18
Instruction
Key strokes
Preset the analyzer.
[PRESET]
Turn on tracking generator, set the output
level to –10 dBm.
[MODE], {Tracking Generator}, [ENTER],
{Amplitude {On}}, –10, dBm
Set the start and stop frequencies for your
DUT. (Frequencies shown here are for example
only.)
[FREQ], {Start Freq}, [100], {MHz} {Stop
Freq}, [500], {MHz}
Disconnect the DUT, and connect a cable from
the input connector to the directional bridge
output connector.
Normalize to eliminate the test system
response error.
[MEAS], {Normalize}, {Store Ref (1 to 4),
{Normalize {On}}
Change the normalized reference position.
{Norm Ref Posn}, 8, [ENTER]
Reconnect the DUT without changing any
analyzer settings and terminate the uncon-
nected port of the DUT.
Use a marker to read the return loss.
Position a marker and rotate the knob
to find the highest peak; this is the
maximum return loss.
Figure 10. Short circuit normalized
Section 9
Reflection measurements (continued)
Figure 11. Return loss of the bandpass filter
