Hioki IM3536-01 - Error Correction

97
5
Error Correction
Measurement cables, probes, and xtures have stray admittance and residual impedance. Since
these characteristics inuence measured values, measurement accuracy can be increased by cor-
recting for them.
First, set the measurement mode to LCR mode (p. 24).
Settings are congured on the ADJ screen.
Check the following before performing correction:
• T
urn on the instrument and allow it to warm up for at least 60 min. before performing correction.
• The measurement accuracy values dened in the specications are for when open circuit correction and
short circuit correction are performed. Before performing measurement, be sure to perform open correc-
tion and short correction.
• Be sure to repeat the correction process after changing measurement cables, probes, or xtures. Y
ou will
be unable to obtain correct values if measurement is performed in the correction state prior to replace-
ment.
• When performing correction, make sure that there is no noise source nearby. Noise may cause an error
when performing correction.
ex. Servo Motor, switching power source, high-voltage cable and etc.
• Perform correction under conditions that are similar to the en
vironment in which the sample actually will be
measured.
• The corrected value is preserved in the memory of the main instrument even when power is turned off.
• Before performing correction, congure the low Z high accuracy mode, cable length, and DC bias settings.
Changing any of these settings will invalidate the correction values.
(See "Low Z High
Accuracy Mode (high-precision measurement) (AC/DC)" (p.
56), "5.1 Setting the
Cable Length (Cable Length Correction)" (p.
98), and "DC bias (superimposing a DC voltage on the
measurement signal)(AC)" (p.
60).)
5 Error Correction
5
Error Correction