ES601Plus OPERATING MANUAL
CALIBRATE
OFFSET:
The "OFFSET:" displayed to the right of this control is the resistance of
the test lead used in measuring point-to-point resistance. In a point-to-
point test, the OFFSET calibration is subtracted from the measured
resistance to obtain the result which is displayed by ES601Plus.
Calibrate the OFFSET when required, particularly if the test lead used for
point-to-point measurement is changed. Performing the calibration from
System Settings Menu #2 (see Section 3.3) records the OFFSET in non-
volatile memory. Performing the calibration from the Sequence Controls
menu updates the OFFSET for the manual test, but does not store the
calibration in the non-volatile memory.
Calibrate the OFFSET according to this procedure:
1. Connect the Kelvin Cable to the corresponding jacks of
ES601Plus.
2. Connect the test lead which will be used for point-to-point
measurement to the "TO DUT CASE" jack of ES601Plus.
3. Connect the free ends of the Kelvin Cable and the test lead
together. Verify a solid mechanical contact exists between the
two cables at the far end.
4. Press the CALIBRATE OFFSET button. The resistance will
be measured and displayed within one second.
5. The result should be 0.05 ohms or lower for a typical test lead of
2-meter length. For best results, avoid use of a poor-quality or
excessively long cable having a resistance exceeding 0.1 ohm.
ES601Plus will produce an alarm and reject the calibration if the
resistance exceeds 3 ohms.
6. If the resistance seems unreasonably high, verify the connection
between the test lead and the Kelvin Cable. Also confirm the
test lead makes a solid contact when inserted into the "TO DUT
CASE" jack. Repeat the calibration as required until an
acceptable result is obtained.
ESCAPE:
This button on the Sequence Controls menu aborts the test in progress
and returns the display to the MANUAL MODE menu.
Manual Testing/Chapter 5 # Page 58
To Next Page
Loading...