Specifications

Chapter 8 219
Performance Tests
Spectrum Analyzer Image Rejection Performance Test 24
Spectrum Analyzer Image Rejection
Performance Test 24
The purpose of this test is to verify that the Test Set meets the
specification limits in PTR (Performance Test Record) Table 9-24,
“Spectrum Analyzer Image Rejection (Image) Test 24 Record,” on page
275. This test has two procedures. The first procedure measures the
spectrum analyzer’s ability to reject image frequencies. The spectrum
analyzer is tuned to a signal frequency while an image signal from the
signal generator is applied to the antenna input port.
The second procedure measures the spectrum analyzer’s residual
response at several frequencies.
Setup
Figure 8-29 Spectrum Analyzer Image Rejection Test 24
Procedure 1
1. On the signal generator:
a. Set the level to -20 dBm.
b. Set the frequency to 613.6 MHz.
c. Set modulation off.
2. On the Test Set:
a. Press
Preset.
b. Select the INSTRUMENT CONFIGURE screen.
c. Set the RF Display field to Freq.
ANT IN
Signal Generator
OUTPUT
REF IN
10 MHz OUTPUT