Modulation Sinad Measurement; Measurement Procedure - Agilent Technologies PSA Series Manual

Modulation SINAD Measurement

This procedure describes how to make a Modulation SINAD measurement. In this
measurement example, a signal generator is the UUT and is adjusted to deliver a
test signal. Modulation SINAD measurement is used to measure and display the
modulation SINAD of the signal.
You can make Modulation SINAD measurements without a Power Meter since it is
NOTE
the PSA that measures the Modulation SINAD.

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.
Step 1. Setup the measurement system. See
To measure the Modulation SINAD, you do not have to perform the Power Meter
calibration.
Step 2. Make sure you have selected
Step 3. Adjust the signal generator to the desired settings for your test.
Step 4. Perform a Frequency Counter measurement to accurately determine the center
frequency of your signal.
When the measurement is completed, the measurement result will display.
Step 5. Press
When the measurement is completed, the measurement result will display.
Chapter 3
key. This avoid the need to make Frequency Counter measurement before
Measuring Receiver
key. Wait for the measurement to be completed.
Modulation SINAD
Making Measurements
Modulation SINAD Measurement
"System Hardware Connections" on page
mode in the
MODE
Frequency
44.
key menu.
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