204
Chapter 9
Performance Verification Tests
5. Residual FM
5. Residual FM
This test measures the inherent short-term instability of the analyzer
LO system. With the analyzer in zero span, a stable signal is applied to
the input and slope-detected on the linear portion of the IF bandwidth
filter skirt. Any instability in the LO transfers to the IF signal in the
mixing process. The test determines the slope of the IF filter in Hz/dB
and then measures the signal amplitude variation caused by the
residual FM. Multiplying these two values yields the residual FM in
Hz.
There are no related adjustment procedures for this performance test.
Equipment Required
Synthesized signal generator
Cable, Type-N, 152-cm (60-in)
Additional Equipment for 75
Ω
Input
Pad, minimum loss
Adapter, Type-N (f), to BNC (m), 75
Ω
Figure 9-4
Residual FM Test Setup
CAUTION
Use only 75
Ω
cables, connectors, or adapters on instruments with 75
Ω
connectors, or damage to the connectors will occur.
Summary of Contents for ESA-L1500A
Page 12: ...11 1 Preparing for Use and Printing ...
Page 28: ...27 2 Getting Started ...
Page 47: ...46 Chapter2 Getting Started Analyzer Battery Information ...
Page 48: ...47 3 Troubleshooting ...
Page 54: ...Chapter 3 53 Troubleshooting How to Return Your Analyzer for Service Figure 3 1 ...
Page 117: ...116 Chapter4 Front Panel Key Reference Trig ...
Page 118: ...117 5 Menu Maps ...
Page 119: ...118 Chapter5 Menu Maps ...
Page 120: ...Chapter 5 119 Menu Maps ...
Page 121: ...120 Chapter5 Menu Maps ...
Page 122: ...Chapter 5 121 Menu Maps ...
Page 124: ...Chapter 5 123 Menu Maps ...
Page 125: ...124 Chapter5 Menu Maps ...
Page 128: ...Chapter 5 127 Menu Maps ...
Page 129: ...128 Chapter5 Menu Maps ...
Page 130: ...Chapter 5 129 Menu Maps ...
Page 131: ...130 Chapter5 Menu Maps ...
Page 135: ...134 Chapter5 Menu Maps ...
Page 136: ...135 6 Options and Accessories ...
Page 145: ...144 Chapter6 Options and Accessories Accessories ...
Page 146: ...145 7 Specifications ...
Page 179: ...178 Chapter7 Specifications Regulatory Information ...
Page 180: ...179 8 Required Equipment ...
Page 187: ...186 Chapter8 Required Equipment Test Equipment ...
Page 308: ...307 10 Performance Verification Test Record ...