Keysight N9038A, Service Manual

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742 Keysight N9038A MXE Service Guide
Tests
EMI Average Detector Accuracy
Band D Testing
1. Setup the IGUU 2916 EMI pulse generator as follows:
a. Aux. Generator: Band C/D
b. Pulse Frequency: 5000 Hz
c. Amplitude: 40 dBµV
2. Connect the IGUU 2916 EMI pulse generator Output Auxiliary Generator
Band A/B/C/D to the EMI receiver RF Input.
3. Preset the EMI receiver by pressing Mode Preset .
4. Tune the receiver to 500 MHz with a span of 0 Hz by pressing FREQ
Channel, Center Freq, 500 MHz then SPAN X Scale, Zero Span .
5. Set the Sweeptime to 1 second by pressing Sweep / Control, 1 s .
6. Set the amplitude units to dBµV by pressing AMPTD Y Scale, More, Y Axis
Unit, More, dBµV .
7. Set the reference level to 80 dBµV by pressing AMPTD Y Scale, 80 dBµV .
8. Change the detector used by the EMI receiver to EMI Average by pressing
Trace / Detector, More, Detector, More, EMI Average .
9. Set the EMI receiver input attenuator to 0 dB by pressing AMPTD Y Scale,
Attenuation, 0 dB .
10. Put the EMI receiver in single sweep operation by pressing Single .
11. Take a single sweep on the EMI receiver by pressing Restart .
12. Once the sweep has completed find the peak of the detector output by
pressing Peak Search .
13. Record the marker value in Table 22-56 as the Measured value for the
Band D reference PRF.
14. Calculate the Error with the following formula and enter the value in Table
22-56 .
Error = Measured – 40 dBµV + 16.07 dB
15. Put the marker in Delta mode by pressing Marker, Delta .
Table 22-56 EMI Average Amplitude Relationship Band D – CISPR 16-1-1 :2010 Section 6.5.2
Pulse Frequency
(Hz)
Band D
Measured
(dBµV)
Lower Limit
(dB)
Error
(dB)
Upper Limit
(dB)
5000 -2.0 +2.0