R3132 Series Spectrum Analyzer Operation Manual
5.4.3 Offset Error (External Mixer Mode)
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5.4.3 Offset Error (External Mixer Mode)
This section describes how to measure an offset error: measure the difference between the center frequency
and the FM Demod frequency reading after the signal generator frequency has been set to the external mix-
er’s IF frequency.
In the R3132 series, the frequency is phase locked on the signal generator’s 10 MHz reference signal.
Specification:
≤ (4% of the screen display range + K + Frequency reading × Frequency reference accuracy)
K: 128 kHz (Screen display range: 500 MHz to 5 MHz)
8 kHz (Screen display range: 2.5 MHz to 250 kHz)
2 kHz (Screen display range: 100 kHz to 10 kHz)
Instruments Required
Procedures:
Setting the measurement conditions
1. Connect the instruments as shown in Figure 5-30.
Figure 5-30 Setup for Checking the Offset Error (External Mixer Mode)
2. Set the signal generator as follows:
Frequency: 421.4 MHz
Output level: -50 dBm
Instruments Qty. Recommended Model
Signal Generator 1 SMT02
RF Cable BNC(m)-BNC(m) 1 MI-09
RF Cable SMA(m)-SMA(m) 1 A01002
Adapter N(m)-SMA(f) 1
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