APPENDIX
51
Specifications
Conditions
Background
The specifications are applicable under the following
conditions:
A 1-year calibration cycle.
An operating temperature of 18 to 28 ˚C (64.4 to
82.4˚F).
Relative humidity not exceeding 80%.
Accuracy is expressed as ±(percentage of reading +
digits).
The instrument requires 30 minutes warm-up time to
achieve rated accuracy.
The power cord protective grounding conductor must
be connected to ground.
Resistance Measurement
30000 counts (speed : 7 readings/second)
Range Resolution
Measuring
Current Accuracy
Open-Terminal
Voltage
30mΩ 1μΩ
1A approx. 0.1%+6*
~1.772V
300mΩ 10μΩ
100mA 0.05%+6*
~1.772V
3Ω 100μΩ
100mA 0.05%+3
~1.772V
30Ω 1mΩ
10mA 0.05%+2
~1.772V
300Ω 10mΩ
1mA 0.05%+2
~1.772V
3kΩ 100mΩ 100μA
0.05%+2
~1.770V
30kΩ 1Ω 100μA
0.05%+2
~4.570V
300kΩ 10Ω 10μA
0.05%+2
~4.526V
3MΩ 100Ω 1μA
0.05%+2
~4.148V
3000 counts Accuracy (speed: 30 readings/second) ±5 counts **
*When the instrument is set to 30mΩ or 300mΩ ranges, the resistance value
will be changed while connecting or disconnecting the test lead to the panel
due to the different temperature between internal and external parts of the
instrument. Therefore, please must wait 1 minute in order to obtain an
accurate value after the test leads have been connected or disconnected.
* When Kelvin clips are used to resume testing after a long period of time,
please wait for a short time to stabilize the measurement.
** In high speed mode, first ensure that the instrument has been grounded
through the power cord.
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