Fluke 5730A - Wideband Output Flatness Test

5730A
Calibration Manual
84
Table 20. Wideband Adjustment Tolerance
5730A Series II Wideband Output 5790A Adjustment Counts ±ppm
2.10000 V 20
1.00000 V 10
300.000 mV 3
100.000 mV 10
30.0000 mV 3
10.0000 mV 1
3.00000 mV 1
1000.00 μV 1
Wideband Output Flatness Test
Use Table 23 as a test record. To perform wideband output flatness test, proceed
as follows:
1. Connect the equipment as shown in Figure 19. Note that the Calibrator
wideband cable is connected to the 5790A directly, the termination is not
used.
5790A
Wideband
Input
5730A
Wideband
Output
Wideband
Output Cable
F3-13.EPS
Figure 19. Wideband Flatness Test Setup
2. Set the wideband output to 3 V at 1 kHz.
3. Push the WBND button on the 5790A, when the reading has settled, push the
SET REF soft key.
4. Set the Calibrator to frequencies shown in Table 23 for the 3 V output and
record the errors on the 5790A error display at each frequency in Table 23.
5. Verify that the error readings are within spec limits or reduced spec limits
shown on the test record. Reduced spec limits are used when the TUR (Test
Uncertainty Ratio) is less than 4:1.
6. Repeat steps 4 and 5 for the remaining output levels shown in Table 23 using
the appropriate voltage in step 4.