R3132 Series Spectrum Analyzer Operation Manual
5.2.11 Residual FM
5-41
5.2.11 Residual FM
This test measures the inherent short term instability of the spectrum analyzer. A stable signal is applied
to the spectrum analyzer input. The analyzer is set to zero span and the signal is slope detected on the skirt
of the RBW. Any instability in the spectrum analyzer’s Local Oscillator system is transferred to the IF in
the mixing process.
Specification:
Apply for R3132/32N/62
Residual FM: ≤ 60 Hzp-p/0.1 sec.
Apply for R3172/82
Residual FM: ≤ 60 Hzp-p × N/0.1 sec.
Instruments Required:
Procedures:
Determining the IF filter slope
1. Connect the signal generator as shown in Figure 5-11.
Instruments Qty. Recommended Model
Signal Generator 1 SMP02
RF Cable SMA(m)-SMA(m) 1 A01002
Minimum Loss Pad 1
*1
HP11852B
Adapter N(m)-SMA(f) 1
Adapter SMA(f)-SMA(f) 1
*2
*1 R3132N Only
*2 R3182 Only
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