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2000 mA Clamp Balance Test
Do the balance test after calibration. The balance test evaluates the clamp measurement error when the clamp is in
different positions. If any position fails the balance test, a balance adjustment is required. See 2000 mA Clamp
Calibration Adjustment.
To do the balance test:
1.
Make sure you have the required equipment. See Table 2.
2.
Connect the equipment. See Figure 6.
3.
Power on all the equipment.
4.
On the 5522A, set the 9.0 A dc output to the 50-turn 1 kA coil and place the clamp on it.
5.
Push until b-UP shows, then move the jaw and locate the coil center in the top area of the jaw. Hold for
5 seconds.
6.
Push until b-do shows, then move the jaw and locate the coil center in the bottom area of the jaw. Hold for
5 seconds.
7.
Record the reading.
The reading difference between the top and bottom position must be below 1.0 A (10 digits.)
Calibration
Use the calibration procedures to adjust the Product so that the values shown on the Meter correspond as closely as
possible with the actual measured values. The Product measures the applied reference source, calculates correction
factors, and stores the correction factors in nonvolatile memory.
Should the Product fail any of the performance tests, do the calibration adjustment procedure.
The first calibration of the Product is available from the Fluke factory only.
Meter Calibration Adjustment
Before you can adjust the Meter calibration, you must enter your password in the Maintenance Mode.
1.
Follow the instructions to enter Maintenance mode (see Start Maintenance Mode) and then:
a.
Push until CAL shows on the display.
b.
Follow the steps in Enter the Password until C-01 shows on the display.
2.
For each value in Table 6:
a.
Apply the Calibrator Output value to the Meter.
b.
Push to confirm the calibration step.
If the input signal does not satisfy the calibration requirement, the Meter shows Err. If the signal is not stable, you
must push several times to confirm the calibration.
After you confirm the calibration, the Meter goes to the subsequent calibration step. When the last calibration
point is recorded, End shows on the display. See Figure 7.
After you push wait for the calibration step number to advance before you change
the calibrator source. Some adjustment steps can take several seconds to complete
before the Meter goes to the subsequent step. Set the Calibrator to Standby after you
complete adjustment of each function.
While the calibration adjustment points are shown in Table 6, the Meter shows the
necessary inputs. For each step, push to see the necessary dc reference signal
amplitude. Use the connections shown in Figure 8.
Note
Note
Note
Wireless DC Clamp
Calibration
15
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