Rf Power Measurement; Measurement Procedure - Agilent Technologies PSA Series Manual

Making Measurements

RF Power Measurement

RF Power Measurement
This procedure describes how to make a RF Power measurement. In this
measurement example, a signal generator is the UUT and is adjusted to deliver a
test signal. The RF Power Measurement measures and display the power of the
signal.
RF Power quantifies the output level, in an absolute term, of a signal generator or
an attenuator being calibrated. This is a common measure for broadband
RF/microwave signal qualification.
The measurement default is to use a Power Meter with a Sensor Module to make
NOTE
the RF Power measurement. The Power Meter measures the RF Power and returns
the result to the PSA.
Alternatively, you can measure the RF Power with only the PSA. Press
Setup
signal level with the PSA, refer to the PSA Specification Guide.

Measurement Procedure

For AM/FM/PM modulated signals, the modulation may distort the original signal
NOTE
spectrum and the instrument may not determine the correct carrier frequency.
Since the result of this measurement is used to calculate follow-on measurements,
the alternative is to input the carrier frequency manually by pressing
Channel
other measurements.
Press the Restart key to optimize the measuring receiver configuration if you make
CAUTION
any changes to the UUT or to the measuring receiver settings after you make your
first measurement.
Using a P-Series Power Meter with a N5532A/B Sensor Module
Step 1. Connect, configure and verify the measurement system. See
Connections" on page
System Connections" on page
Step 2. Calibrate the Power Meter see
see "Load Cal Factors" on page 52
Step 3. Make sure you have selected
Step 4. Adjust the signal to the desired settings for your test.
70
, , . To determine the accuracy when measuring the RF
Use Power Meter No
key. This avoid the need to make Frequency Counter measurement before
44, "System Configuration" on page 47
51.
"Calibrating System Components" on page
Measuring Receiver
"System Hardware
and "Edit Cal Factors" on page
mode in the
Meas
Frequency
and "Verifying the
52. Also
53.
key menu.
MODE
Chapter 3