Velleman LCR40 - Manual (Page 18)

Atlas LCR User Guide January 2009 – Rev 4
Page 18
Appendix D – Troubleshooting
Problem Possible Solution
Capacitance measured when
probes are open circuit is not
close to zero (±1.0pF).
Perform a probe compensation.
Resistance and/or inductance
measured when probes are
short circuit is not close to
zero (±1.2Ω, ±1.6µH).
Perform a probe compensation.
Ensure probes are well connected to the
component under test for the entire duration
of the analysis.
Ensure that nothing else is connected with
the component under test. Make sure that
you are not touching the connections.
The component value may be outside the
supported measurement range.
Measured value doesn’t
appear to be correct.
The component’s design frequency may not
correspond to the test frequencies used by
the Atlas LCR.
Measured values vary
slightly between tests.
The displayed resolution is higher than the
measurement resolution to avoid rounding
errors. Small variations within the quoted
measurement resolutions are normal.
Calibration date is
approaching or has past.
Don’t worry, the Atlas LCR will carry on
working after the “Calibration Due Date”
has past. The date is simply a
recommendation.
Probe has become detached.
The probes simply fit to the test lead using
square-pin connectors, carefully push them
back together.