R3132 Series Spectrum Analyzer Operation Manual
5.2.9 Input Attenuator Switching Accuracy (R3172/82)
5-33
Figure 5-9 Setup of Input Attenuator Switching Accuracy Test (R3172/82)
2. On the signal generator, set controls as follows:
Frequency: 4 GHz
Output Level: -5 dBm
3. On the external attenuator, set attenuation 10 dB.
4. On the R3172/82, after preset, set controls as follows:
Center Frequency: 4 GHz
Frequency Span: 3 kHz
5. In step 4 the center frequency is more than 3.3 GHz, press as follows to tune pre-
selector.
PK SRCH, FREQ, 1/2_more, Presel, Auto Tune
Wait till auto tuning has completed.
6. On the external attenuator, set attenuation 60 dB.
7. On the R3172/82, after preset, set controls as follows:
Reference Level: -50 dBm
Input Attenuator: 10 dB
dB/div: 2 dB/div
RBW: 1 MHz
VBW: 10 Hz
Sweep Time: 3 sec
8. On the signal generator, adjust the power level to place the peak of the signal
three division below the R3172/82 reference level.
Minimum
Loss Pad (*1)
*1 R3132N only
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