Fluke 5500A, Руководство по обслуживанию

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5500A
Service Manual
3-34
3-43. AC Power Amplitude Accuracy (High Power)
The AC Power Amplitude Accuracy (High Power) test checks the accuracy of the ac
power output at high power levels. Apply a short to the AUX terminals to provide a low-
impedance path for current. Table 3-29 shows the test points.
Table 3-29. AC Power Amplitude Accuracy Test (High Power)
Nominal
Value
(NORMAL)
Nominal
Value
(AUX)
Frequency Phase
(degrees)
Measured
Value (V)
(NORMAL)
Deviation % 90-Day Spec.
(%)
329 V 2.19 A 5 kHz 0 0.065%
1 kV 11 A 1 kHz 0 0.048
3-44. Phase and Frequency Accuracy
The Phase and Frequency Accuracy test checks the accuracy of the phase between
signals at the NORMAL output and the AUX inputs, and the accuracy of the frequency.
For the volts-volts phase test, ac couple the input to the phase meter as shown in Figure
3-7. For the volts-current phase, measure the phase across a noninductive resistor as
shown in Figure 3-8. Table 3-30 shows the test points for phase. Table 3-31 shows the
test points for frequency.
Table 3-30. Phase Accuracy Test
Output
Voltage
(NORMAL)
Output
Voltage
(AUX)
Frequency Nominal
Phase
(degrees)
Measured
Value
(degrees)
Deviation % 1-Year Spec.
(degrees)
3 V 1 V 60 Hz 0 0.15 degrees
3 V 1 V 400 Hz 0 0.9
3 V 1 V 1 kHz 0 2
3 V 1 V 5 kHz 0 6
3 V 1 V 10 kHz 0 10
3 V 1 V 60 Hz 60 0.15
3 V 1 V 400 Hz 60 0.9
3 V 1 V 1 kHz 60 2
3 V 1 V 5 kHz 60 6
3 V 1 V 10 kHz 60 10
3 V 1 V 60 Hz 90 0.15
3 V 1 V 400 Hz 90 0.9