Calibration and Verification
Routine Calibration
3
3-25
5.
Press
SAMPLE
to initiate the calibration operation.
Calibration is complete when the Busy legend goes out and the calibrated
measurement is displayed.
6.
On the Calibrator, set
STANDBY
.
7.
Press the
Ω
key to revert to the ranges menu.
DC Current Calibration
XW
Warning
The Calibrator can deliver a lethal electric shock.
To avoid electric shock when performing the following
calibration procedures:
•
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.
Initial Setup
1.
Press the
DCI
key, select the
200
μ
A
range.
2.
Press the
CONFIG
key. Select
Filt
.
3.
In calibration mode the resolution defaults to
RESL7
in the DCI function. It is
recommended that this resolution is used for calibration of all DCI ranges.
4.
Reselect
DCI
.
5.
Confirm that the Multimeter is configured for internal guard (External Guard is
deselected) by checking that the
Ext Grd
legend does not appear on the left-hand
display.
6.
Ensure that the calibrator output is set to
STANDBY
and configured for Internal
Guard (
EXT GRD
is deselected).
7.
Connect the Calibrator to the Multimeter 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
μ
A range and work up to
the 20A range, as shown in Table 3-6.
Summary of Contents for 8508A
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