Wideband Output Flatness Test; Wideband Flatness Test Setup - Fluke 5700A Series Service Manual

5700A/5720A Series II Calibrator
Service Manual
5700A/5720A Series II Wideband
300.000 mV
100.000 mV
30.0000 mV
10.0000 mV
3.00000 mV

3-29. Wideband Output Flatness Test

Use Table 3-32 as a test record. To perform wideband output flatness test, proceed as
follows:
1. Connect the equipment as shown in Figure 3-17. Note that the Calibrator wideband
2. Set the wideband output to 3V at 1 kHz.
3. Push the WBND button on the 5790A, when the reading has settled, push the SET
4. Set the Calibrator to frequencies shown in Table 3-32 for the 3V output and record
5. Verify that the error readings are within spec limits or reduced spec limits shown on
6. Repeat steps 4 and 5 for the remaining output levels shown in Table 3-32 using the
7. Record the 1 kHz absolute errors at each output level from Table 3-32 into the
3-40
Table 3-12. Wideband Adjustment Tolerance
Output
2.10000V
1.00000V
1000.00 µV
cable is connected to the 5790A directly, the termination is not used.
Calibrator (UUT)
Wideband
Output
Figure 3-17. Wideband Flatness Test Setup
REF soft key.
the errors on the 5790A error display at each frequency in Table 3-32.
the test record. Reduced spec limits are used when the TUR (Test Uncertainty Ratio)
is less than 4:1.
appropriate voltage in step 4.
appropriate column in Table 3-33. Record the flatness errors from Table 3-32 for
each output level and frequency into the appropriate column in Table 3-33. Add the
errors and verify that they are within spec for the appropriate time internal.
5790A Adjustment Counts
± ppm
20
10
3
10
3
1
1
1
Wideband
Output Cable
5790A
Wideband
Input
F3-13.EPS