4.3 Setting DC Resistance Measurement
93
4
Chapter 4 LCR Function
• The guaranteed accuracy range varies depending on the measurement conditions.
See Check the accuracy assured ranges in "14.2 Measurement Range and Accuracy" (p. 342)
• The measurement range is determined according to the test range setting.If the display
for the measured value shows "OVER FLOW" or "UNDER FLOW", that means that mea-
surement cannot be performed using the currently set test range. Either you should set
AUTO ranging so as to select the most suitable test range automatically, or you should set
a more suitable test range manually. If a measurement result is outside the display range
(p. 337), "DISP OUT" is displayed.
• The test range setting is made according to the combination of the impedances of the
sample being tested and the test cables. Therefore it can happen that testing is not possi-
ble, if the test range is held with HOLD only upon the basis of the impedance of the sam-
ple under test. If this happens, you should change the test range, making reference to "8.1
Setting Open Circuit Compensation" (p. 215) and "8.2 Short Circuit Compensation" (p.
224).
• When the measurement value is outside the guaranteed accuracy range, the following
icon appears at the top of the screen.
In this case, you should consider the following possible causes, and you should either
change the test conditions while checking the accuracy assured ranges "14.2 Measure-
ment Range and Accuracy" (p. 342), or you should consider the measured values as val-
ues for reference.
• Perhaps the test signal level is too low, increase the test signal level.
• If the current measurement range (during HOLD setting) is not appropriate, set again in the
AUTO range, or change the range by manual.
Test range
Accuracy
guaranteed range
AUTO Ranging Range
100 M 8 M to 200 M 8 M or more
10 M 800k to 100M 800 k to 10 M
1 M 80k to 10M 80 k to 1 M
100 k 8 k to 1M 8 k to 100k
10 k 800 to 100 k 800 to 10 k
1 k 80 to 10 k 80 to 1 k
100 8 to 100 8 to 100
10 800 m to 10 800 m to 10
1 80 m to 1 80 m to 1
100 m 10 m to 100 m 0 to 100 m
To select the measurement range.
4
Range Selection
Set the test range according to the combined impedance value
of the sample to be tested and the test cables.
5
Press to close the setting screen.
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