Keysight N9038A, Service Manual, Page: 708 / 745

Keysight N9038A MXE Service Guide 727
Tests
Peak Detector Accuracy
21. Calculate the Error for each of the Measured values in Table 22-40 with
the following formula and enter the value in Table 22-40 .
Error = Measured – 40 dBµV – 6.61 dB – Error ( Table 22-39 )
Band B Testing
1. Set the IGUU 2916 EMI pulse generator to output a 10 MHz Sine Wave
signal.
2. Connect the IGUU 2916 EMI pulse generator Output Sine Wave Generator
to the EMI receiver RF Input.
3. Preset the EMI receiver by pressing Mode Preset .
4. Tune the EMI receiver to 10 MHz with a span of 0 Hz by pressing FREQ
Channel, Center Freq, 10 MHz then SPAN X Scale, Zero Span .
5. Set the Sweeptime to 100 milliseconds by pressing Sweep / Control, 100
ms .
6. Set the RF Coupling to DC by pressing Input / Output, RF Input, RF
Coupling DC (instruments with option 544 are always DC coupled so this
step is skipped for them).
7. Set the amplitude units to dBµV by pressing AMPTD Y Scale, More, Y Axis
Unit, More, dBµV .
8. Set the reference level to 80 dBµV by pressing AMPTD Y Scale, 80 dBµV .
9. Change the detector used by the EMI receiver to Peak by pressing Trace /
Detector, More, Detector, Peak .
10. Turn on the marker by pressing Marker .
11. Record the marker value in Table 22-41 as the Measured value for Band B.
Table 22-40 Peak Response to Pulses Band A – CISPR 16-1-1 :2010 Section 5.4
Pulse
Frequency
(Hz)
Sweeptime
(sec)
Band A
Measured
(dBµV)
Lower Limit
(dB)
Error
(dB)
Upper Limit
(dB)
190 0.1 -2.0 +2.0
150 0.1 -2.0 +2.0
100 0.1 -2.0 +2.0
50 0.1 -2.0 +2.0
10 2.0 -2.0 +2.0
1 2.0 -2.0 +2.0