3.2 Configuring Settings
45
Auto-range operation
During auto-range operation, the range is switched as described below:
* Example:
Assume that the input current changes to an RMS value of 10 mA and the current waveform peak value
changes to 400 mA while using the 100 mA range. Since 15% of the 100 mA range is 15 mA, this RMS
value should cause the range to be lowered. However, since the current waveform peak value is 400 mA,
a peak overage would occur with the 50 mA range. In this case, the range will not be lowered from the 100
mA range.
The voltage and current display range is ±0.5% to ±152% of the range.
When the measured value is less than ±0.5% of the range, the zero-suppression function forces the value to
be displayed as zero.
Range increased Range decreased
• When the measured value exceeds
150% of the range
• When the
PEAK OVER lamp lights up
When the measured value is less than 15% of the range, the
range will be switched to the optimal range. (The range will not
be decreased when the value would exceed the peak value for
the next lower range.*)
These errors indicate that the instrument was unable to switch ranges. Take the following action to
address the error:
Error display Status Solution and reference for more information
During integration operation
(RUN lamp lit up or flashing)
The range cannot be switched until the integrated value is
reset (so that the RUN lamp turns off).
See: "Canceling integration (resetting integrated values) (DATA
RESET)" (p.65)
During display hold opera-
tion (HOLD lamp lit up)
The range cannot be switched until the display hold is can-
celed (so that the HOLD lamp turns off).
See: "Canceling the display hold state" (p.106)
When or is displayed
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