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Power Level
Accuracy Test
Procedure
Power level accuracy is tested by stepping the out
-
put power level down in 1 dB increments from its
maximum rated power level and measuring the out
-
put power level at each step.
1. Set up the 682XXB/683XXB 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 CW frequency indicated on the
Test Record.
d.
Press Edit L1 to open the current power level
parameter for editing.
e. Set L1 to the power level indicated on the Test
Record.
2. Measure the output power level with the Power
Meter and record the reading on the Test Record.
3. On the 682XXB/683XXB, use the cursor control
key (diamond-shaped key) to decrement L1 to the
next test power level on the Test Record. Measure
and record the Power Meter reading on the Test
Record.
4. Repeat step 3 for each of the test power levels
listed on the Test Record for the current CW fre
-
quency.
5. Repeat steps 1 thru 4 for all CW frequencies
listed on the Test Record.
Power Level
Flatness Test
Procedure
Power level flatness is tested by measuring the out
-
put power level variation during a full band sweep;
first in the step sweep mode (682XXB/683XXB mod
-
els), then in analog sweep mode (683XXB models
only).
1. Set up the 682XXB/683XXB as follows for a step
sweep power level flatness test:
a.
Reset the instrument by pressing SYSTEM ,
then Reset . The CW Menu is displayed.
b.
Press Step to place the signal generator in the
step sweep frequency mode and display the
Step Sweep Menu.
682XXB/683XXB MM 3-27
PERFORMANCE POWER LEVEL ACCURACY
VERIFICATION AND FLATNESS TESTS