Fluke 5790B, Руководство по обслуживанию

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Calibration Adjustment and Verification
Calibration Verification
3
3-39
2. For each line of Table 3-12, apply the input specified in column “Nominal”
stimulus from the 5730A.
3. Some tests require range locking of the Product to ensure that the
appropriate range is calibrated. Select the appropriate range lock key on
the front panel of the Product.
4. Wait for measurement to stabilize.
5. Record in the “5790B Positive Measurement” column of Table 3-12.
6. Set the 5730A to output negative nominal stimulus.
7. Wait for measurement to stabilize.
8. Record in the “5790B Negative Measurement” column of Table 3-12.
9. Calculate the average of the absolute values and record in column
“5790B Average” of Table 3-12.
10. Evaluate the result relative to the Lower and Upper limit columns.
11. Repeat steps 2 to 10 for each line of the verification table.
Verifying the Main Input (INPUT 1 or 2)
Verifying the Main Input requires measurements and calculations that result in
over 400 entries in a test record. At Fluke Calibration, an automated procedure is
used as described in the introduction to this section. Test voltages and
frequencies are divided into five regions as defined in Table 3-13. The
procedures you use for each region are described next.
Note
Refer to Figures 3-5 and 3-8 for test setups.
Table 3-13. Main Input Verification Regions
Ranges AC-DC Difference Error Absolute AC Error
2.2 V through 1000 V Region I Region II
70 mV through 700 mV Region III Region IV
7 mV through 22 mV No spec Region V
To do the procedure manually, make copies of the rest of the worksheets in this
section before you proceed. Table 3-14 is the overall test record for main input
verification.