Keysight N9038A, Service Manual, Page: 702 / 745

Keysight N9038A MXE Service Guide 721
Tests
Quasi-Peak Detector Accuracy
19. Without changing any other setting on the EMI receiver or the IGUU 2916
EMI pulse generator change the Pulse Frequency on the pulse generator
to the other values in the Table 22-37 (except 1000 Hz and Isolated) and
repeat step 17 and step 18 for each.
20. Change the Pulse Frequency on the IGUU 2916 EMI pulse generator to 0.1
Hz .
21. Turn noise floor extension on by pressing Mode Setup , Noise Reduction ,
Noise Floor Extension On .
22. Take a single sweep on the EMI receiver by pressing Restart (due to the
slow pulse rate a number of Restarts may be required to capture a
complete pulse).
23. Once the sweep on the EMI receiver has completed and the auto peak
value is found record the marker delta amplitude value for the pulse
frequency of Isolated in Table 22-37 .
24. Turn noise floor extension off by pressing Mode Setup , Noise Reduction ,
Noise Floor Extension Off .
25. Setup the IGUU 2916 EMI pulse generator as follows:
a. Aux. Generator: Band C/D
b. Pulse Frequency: 100 Hz
c. Amplitude: 40 dB μ V
26. Move the cable on the IGUU 2916 EMI pulse generator to Output Auxiliary
Generator Band A/B/C/D.
Table 22-37 Quasi-Peak Relative Response Band D - CISPR 16-1-1: 2010 Section 4.4.2
Pulse Frequency
(Hz)
Band D
Lower Limit
(dB)
Measured
(dB)
Upper Limit
(dB)
1000 6.5 9.5
100 0 Reference 0
20 − 10.5 − 7.5
10 − 16.0 − 12.0
2
− 28.5
a
−
23.5
a
1
− 31.0
a
− 26.0
a
Isolated (0.1 Hz)
b
− 34.0
a
− 29.0
a
a. These measurements are optional and are not required.
b. Due to the slow pulse rate you may need to take multiple sweeps to capture a complete pulse.