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5700A CALIBRATOR
WIDEBAND
OUTPUT
Figure 3-11. Wideband Calibration Source Characterization, Part 2
13. Set the 5700A to 3.2 V at 1 kHz and then press the "SET REF" softkey on the
5790A.
14. Proceed to each of the frequencies listed in Table 3-8. Set the 5700A frequency,
and adjust the 5700A to give the same error on the 5790A display as recorded in
the table from the previous steps. Record the error displayed by the 5700A (both
magnitude and sign) in Table 3-8 in PPM.
15. The 5700A is now characterized and can be used to calibrate the 5790A.
3-20. Calibrating Wideband Input Gain at 1 kHz
Proceed as follows to perform gain (absolute) calibration at 1 kHz for each range. You do
not need the worksheet for this part of WIDEBAND calibration.
1. Connect the equipment as shown in Figure 3-12. Set the 8506A in the HI
ACCUR mode.
2. Press the 'UTIL MENUS' and then the 'CAL' softkeys.
3. Press the 'CAL' and then the 'WBND CAL' softkeys. This produces the
following display:
Prev
Cal
Menu
4. Enter the ambient temperature on the number keys and then press ENTER, or
press ENTER to accept 23.0 C.
5. The 5790A will step to the first calibration point on the 7 V range.
6. Apply 3.0 V at 1 kHz and then press the 'DO STEP' softkey.
ATTEN
ATTEN
20 dB
10 dB
Full WBND Calibration
ENTER the ambient temperature in ºC.
Temperature = +23.0 (+15º to +35º)
Calibration and Verification
Periodic Calibration
NO CABLES
5790A
WIDEBAND
INPUT
3
elu036.eps
elu038.eps
3-31
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