Agilent Technologies PSA Series Manual page 78

Making Measurements
Tuned RF Level Measurement
occur.
As the power level is decreased the measurement time will increase since the
NOTE
signal is closer to the noise and more averaging is required. The sensor module
attenuates the signal. When measuring very low level signals, consider using the
relative TRFL measurement which does not require the sensor module and power
meter.
7. When all source levels have been measured, calculate the TRFL measurement
error. See the Measuring Receiver Personality specifications in the PSA
Specification Guide. The Absolute Measurement Accuracy specification
applies
If you wish to start a new series of measurements, and want to clear the Cal Factor
NOTE
values, press
Press
If the frequency setting of the measurement is changed you must clear the Cal
NOTE
Factor values and recalibrate the ranges at the new frequency.
Performing a Relative TRFL Measurement Without the Power Meter
Step 1. Connect, configure and verify the measurement system. See
Connections" on page 44
connect the DUT output to the PSA RF Input.
See "System Configuration" on page
meter for this test, you may want to set it up for future for future Power
measurements.
Step 2. On the PSA, perform the Auto Align routine by pressing
All Now
Step 3. Set the signal source amplitude and frequency. For this example use 0 dBm and 50
MHz.
Step 4. Configure the PSA settings as shown in the table above.
Step 5. Press the
defaults to the absolute TRFL measurement where the power meter is required.
Step 6. Press
relative TRFL measurement where a power meter is not required. The error
messages will go away, and the Tuned RF Level display should read 0.000dB.
Step 7. Press
allow you to control when the measurement is taken so you can assure the source is
set to the proper level before beginning the measurement. You will need to press
the
Restart
78
, and toggle the IF BW to 75 Hz then back to 10 Hz.
Measure Setup
, to begin a new measurement.
Measure Tuned RF Level
except do not use the N5532A/B Sensor module and
.
key. Error messages will appear because the measuring receiver
Restart
, keys. The measuring receiver is now set to perform the
Meas Setup Set Ref
, select
Measure Control Measure Single
key each time you want to make a measurement.
"System Hardware
47. Although you are not using the power
,
System
and press the
Restart
,
Alignments Align
key. This will
Chapter 3