Keysight N9038A, Руководство по обслуживанию

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740 Keysight N9038A MXE Service Guide
Tests
EMI Average Detector Accuracy
3. Preset the EMI receiver by pressing Mode Preset .
4. Tune the receiver to 100 MHz with a span of 0 Hz by pressing FREQ
Channel, Center Freq, 100 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. Turn on the marker by pressing Marker .
10. Record the marker value in Table 22-53 as the Measured value for Band C.
11. Calculate the Error with the following formula and enter the value in Table
22-53 .
Error = Measured – (Power Meter + 106.99)
12. Setup the IGUU 2916 EMI pulse generator as follows:
a. Aux. Generator: Band C/D
b. Pulse Frequency: 5000 Hz
c. Amplitude: 40 dBµV
13. Connect the IGUU 2916 EMI pulse generator Output Auxiliary Generator
Band A/B/C/D to the EMI receiver RF Input.
14. Set the EMI receiver input attenuator to 0 dB by pressing AMPTD Y Scale,
Attenuation, 0 dB .
15. Put the EMI receiver in single sweep operation by pressing Single .
16. Take a single sweep on the EMI receiver by pressing Restart .
17. Once the sweep has completed find the peak of the detector output by
pressing Peak Search .
18. Record the marker value in Table 22-54 as the Measured value for the
Band C reference PRF.
19. Calculate the Error with the following formula and enter the value in Table
22-54 .
Table 22-53 EMI Average Sine-Wave Voltage Accuracy Band C – CISPR 16-1-1 :2010 Section 6.4
Sine Wave
Frequency
(MHz)
Band C
Power Meter
(dBm)
Measured
(dBµV)
Lower Limit
(dB)
Error
(dB)
Upper Limit
(dB)
100 -2.5 +2.5