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Test
Procedure
The following procedure lets you measure the RF
output single sideband phase noise levels to verify
that they meet specifications.
NOTE
The following technique is a measurement
of phase noise and AM noise. To avoid erro
-
neous results, on the 682XXB/683XXB
DUT set L1 for maximum leveled output
power and select External Detector level
-
ing. This will prevent any AM noise from
degrading the phase noise measurements.
1. Set up the 682XXB/683XXB DUT as follows:
a.
Reset the instrument by pressing SYSTEM ,
then Reset . Upon reset the CW Menu is dis
-
played.
b.
Press Edit F1 to open the current frequency
parameter for editing.
c. Set F1 to the frequency indicated on the Test
Record.
d.
Press Edit L1 to open the current power level
parameter for editing.
e. Set L1 to the maximum leveled power level for
the instrument being tested (refer to Table 3-2,
page 3-6).
2. Set up the 682XXB/683XXB LO as follows:
a.
Reset the instrument by pressing SYSTEM ,
then Reset . Upon reset the CW Menu is dis
-
played.
b.
Press Edit F1 to open the current frequency
parameter for editing.
c. Set F1 to a frequency that is 1 MHz lower than
the 682XXB/683XXB DUT frequency set in
step 1.c.
d.
Press Edit L1 to open the current power level
parameter for editing.
e. Set L1 to the maximum leveled power level for
the instrument model (refer to Table 3-2).
682XXB/683XXB MM 3-23
PERFORMANCE SINGLE SIDEBAND
VERIFICATION PHASE NOISE TEST