Agilent Technologies PSA Series Manual page 376

N5531S Measuring Receiver Performance Verification
Performance Verification Tests
10. On the PSA, press
to control when the measurement is taken so you can assure the proper step
attenuation is set before beginning the measurement. You will need to press the
Restart
Do not Preset the PSA, or use the Frequency Counter function. If you do, the
NOTE
instrument will require at least 30 minutes for stabilization.
Perform the following steps for each measurement value:
1. Change the step attenuator to the next higher value and press the
2. Record the Tuned RF Level value in
3. Repeat steps 1 and 2 and continue increasing the step attenuator value.
4. When the step attenuator is set to approximately 60 dB, the measuring receiver
will automatically calibrate range 2 before performing a measurement.
5. When the step attenuator is set to approximately 80 dB, the measuring receiver
will automatically calibrate range 3 before performing a measurement. This
will take about 5 minutes since the Range 3 Switch delay is set to ON.
6. When all attenuator steps have been measured, calculate the TRFL
measurement error by:
Error = TRFL Measured - Attenuator Cal Value. Fill in Error column of
8-9.
7. Compare the TRFL Error to the specification. Be sure to consider the ±
attenuator uncertainty.
If you wish to start a new series of measurements, and want to clear the Cal Factor
NOTE
2 and Cal Factor 3 values, press
then back to 10 Hz. Press
376
Measure Control
key each time you want to make a measurement.
Measure Setup
Set Reference
, select . This will allow you
Measure Single
Table 8-9 under TRFL Measured.
, and toggle the IF BW to 75 Hz
again.
key.
Restart
Table
Chapter 8