24
Tel: 886.2.2175 2930 Email: [email protected]
www.salukitec.com
Figure 4-11: Pre-amplifier On Measurement
4.9.
Harmonic Distortion Measurement
Following example uses a S1103 signal generator and generates a 300MHz, -10dBm continuous signal.
Example
1) Connect the signal generator output port to S3331 RF test port.
2) Press
【
Preset
】
key to return the instrument to default status
3) Set test frequency.
Press
【
FREQ
】
key
Select [Start FREQ] and input 200MHz
Select [Stop FREQ] and input 1GHz
The trace will be displayed as shown in the figure below. There are 3 peaks, signal, the second harmonic and the third harmonic.
4) Use
【
Peak
】
and
【
Marker
】
keys to do the analyze.
Press
【
Peak
】
key, S3331 will search the MAX value and mark it with a marker 1. In this example, the marker 1 is
located at 300MHz and -10dBm signal which is the input signal.
Press
【
Marker
】
key
Select [Delta], a Marker 2 is activated and it is a Delta marker, the reference marker is Marker 1.
Press
【
Peak
】
key. Then Marker 2 will be located to the second harmonic. Read out the frequency and amplitude
