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Calibration and Verification
Wideband Output Accuracy at 1 kHz Test
3
3-39
Table 3-11. Equipment Required for Testing and Calibrating the Wideband Option
Equipment Model or Description
AC Measurement Standard Fluke 5790A with Wideband Option -03
Wideband cable Supplied with 5700A-03
50Ω Termination Supplied with 5700A-03
Adapter Pomona 1269 BNC(F) to dual banana plug.
Adapter Kings KN-99-46 N(F) to BNC(M)
3-28. Wideband Output Accuracy at 1 kHz Test
This test verifies the Wideband output level at 1 kHz by direct measurement with the
5790A at INPUT 2. Use Table 3-31 for a test record.
Proceed as follows to characterize the rms wideband voltmeter at 1 kHz:
1. Connect the equipment as shown in Figure 3-16.
Input 2
Calibrator (UUT)
Wideband
Output
N(F) to BNC(M) Adapter
BNC(F) to Banana Adapter
5790A
50Ω Termination
Wideband
Output Cable
F3-12.EPS
Figure 3-16. Wideband Accuracy at 1 kHz Test Setup
2. Set the Calibrator wideband output to 2.1V at 1 kHz and the 5790A to read INPUT
2.
3. Push the 2.2V RANGE button on the 5790A to lock it on the 2.2V range.
4. On the 5790A push UTIL MENUS button and then MEAS CONTROL soft key. Set
the digital filter mode to FAST and the restart to MEDIUM. Push the DONE soft
key twice to return to the measurement display.
5. Use the Calibrator output adjustment knob to obtain a reading on the 5790A
measurement display of 2.100000 ±20 counts.
6. Read the error on the Calibrator display and record it in Table 3-32 for the 2.1V
level for the appropriate verification internal. Verify that it is within spec limits
shown.
7. Push the soft key under the RANGE display on the 5790A to return to AUTO
RANGE.
8. Proceed to the remaining levels shown in Table 3-32 and repeat steps 5 through 7
with the appropriate output levels set in each step, using the adjustment tolerance in
Table 3-12 in step 5.