Dc Current Calibration - Fluke 8508A User Manual

8508A
Users Manual
5. Press
6. On the Calibrator, set
7. Press the

DC Current Calibration

The Calibrator can deliver a lethal electric shock.
To avoid electric shock when performing the following calibration
procedures:
Initial Setup
1. Press the
2. Press the
3. In calibration mode the resolution defaults to
4. Reselect
5. Confirm that the 8508A is configured for internal guard (External Guard is
6. Ensure that the calibrator output is set to
7. Connect the Calibrator to the 8508A as shown above.
Range Zero and Gain Calibration Procedure
After the initial setup and connecting up, use the following procedure to calibrate range
zero, then positive and negative range gains on all DCI ranges. Just one range can be
calibrated if required, but for a full calibration start with the 200 A range and work up to
the 20A range, as shown in Table 6-6.
6-24
to initiate the calibration operation.
SAMPLE
Calibration is complete when the Busy legend goes out and the calibrated
measurement is displayed.
STANDBY
key to revert to the ranges menu.
Never touch any lead or terminal unless you are absolutely certain
that no dangerous voltage is present.
Make sure that signal leads are in a safe condition before you
handle them in any way.
key, select the
DCI
key. Select
CONFIG
recommended that this resolution is used for calibration of all DCI ranges.
.
DCI
deselected) by checking that the
display.
Guard ( is deselected).
EXT GRD
.
XW Warning
range.
200 A
.
Filt
RESL7
legend does not appear on the left-hand
Ext Grd
STANDBY
in the DCI function. It is
and configured for Internal