R3132 Series Spectrum Analyzer Operation Manual
5.2.9 Input Attenuator Switching Accuracy (R3172/82)
5-34
9.
On the R3172/82, set controls as follow:
TRACE, 1/2_more, Store A to B, MKR, MKR Trace A/B(B), Delta,
MKR Trace A/B(A)
Measuring the Input Attenuator Switching Accuracy: R3172/82
10. On the R3172/82, press SINGLE for single sweep.
11. On the R3172/82, after single sweep has completed, press PK SRCH to capture
the signal peak.
12. Record the level of marker reading at the actual value on the performance verifi-
cation record sheet.
13. On the R3172/82, repeat steps 9 through 11 for each setting listed in Table 5-13.
14. For the 20 dB attenuator setting, switching accuracy becomes Step-By-Step
accuracy.
15. For the 30, 40, 50, 60 and 70 dB attenuator setting, subtracts the 10 dB down
attenuator switching accuracy from the current attenuator switching accuracy.
16. Repeat steps 2 through 14 for each frequency 15 GHz and 18 GHz setting.
Table 5-13 Input Attenuator Switching Accuracy Test Setting for R3172/82
R3172/82
External Attenuator
Input Attenuator
Reference Level
10 dB
-50 dBm
60 dB
20 dB
-40 dBm
50 dB
30 dB
-30 dBm
40 dB
40 dB
-20 dBm
30 dB
50 dB
-10 dBm
20 dB
60 dB
0 dBm
10 dB
70 dB
+10 dBm
0 dB
