Voltech AT360, User Manual

Page: 168 / 470

P
ROGRAM EDITOR
P
AGE
3-46 V
OLTECH
AT
I
U
SER
M
ANUAL
3.6 F
IXTURE
C
OMPENSATION
(
SEE ALSO SECTION
2.8)
Often when measuring small values of resistance, inductance or capacitance,
the effects of the fixture can add significant errors to the results. To allow you
to make more accurate measurements, the AT Series Testers have built-in
firmware to compensate for the fixture parasitics.
If fixture compensation is required, follow steps 1, 2 and 4 of the procedure in
described earlier in this chapter, so that the tester is connected and the
program is downloaded.
Then from the top-level menu bar, select:
Tester > Compensate Fixture
Most programs will contain at least one test where fixture compensation can
be applied. In this case, you will then see one or two messages:
At this point you should ensure that the appropriate fixture has been placed on
the tester and a short-circuit bobbin fitted. For the following open-circuit
compensation, remember to remove the short-circuit bobbin.
After you have clicked on the ‘OK’ button at either of the messages, the tester
will be commanded to make the compensation measurements for your test
program.