LCR40 User Guide
November 2021 – Rev 7
Page 6
Probe Compensation
If you change the probes on your
LCR40
, it
is good practice to run through the short
compensation procedure. This ensures that
the probes' own inductance, capacitance and
resistance is automatically taken into
account for subsequent measurements.
Before you start the compensation procedure, attach a small length of tinned
copper wire between the two test probes. Now let the leads rest on a non-
conductive surface, try not to touch them during the compensation procedure.
Now press and hold
on-test
until the
following is displayed:
After a short delay, the unit will prompt
you to short the probes together. As you
have already shorted the probes with the
piece of wire, the
LCR40
will then ask
you to open the probes.
Now simultaneously unclip the probes
from the small length of wire and let the
leads rest without touching them.
If this procedure has been successful, the unit will display “OK” and then
switch off.
At this point the parasitic and stray characteristics associated with the test
leads (and indeed the
LCR40
itself) will be stored in non-volatile memory.
All further tests will have these values subtracted from the measured values,
therefore displaying the characteristics of the component alone.
Please note that probe compensation is particularly important when
analysing low value inductors, capacitors and resistors.
Please short
the probes
Probe
Compensation
Now open
the probes