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Chapter 3 Basic Settings
For testing safety, read this chapter before testing.
Note:
During the test, all keys except the [STOP] key are valid. The user must wait for the test to end, or
press the [STOP] key and send a test stop command to forcibly terminate the test. After the test
process is terminated, the instrument can be set.
3.1 Setting the test voltage
The user can choose between automatic range and manual range.
Note:
When the auto range is set to 30 mΩ or less, a maximum current of 1 A will flow into the
measurement target. Therefore, a maximum power of about 2 W may be applied. If you are
concerned about the following problems due to current measurement, select a smaller
measurement current range.
• The test object is blown (fuse, air pump)
• The measured object becomes hot and the resistance value changes
• The measured object is magnetized, and the inductance changes
If the power of the measured object is within the measurement range of each range, the power is
the resistance value × (measured current). When the measurement range is exceeded, the
maximum open circuit voltage × measured current may be reached.
After confirming the range, connect the object to be measured.
* When connected to the measured object, a maximum inrush current of 5 A will flow. (Settling
time: about 1 ms with pure resistance)
3.2 Set the test range
There are two types of range settings: manual range and automatic range. The automatic range
instrument will automatically select a suitable range for testing according to the value of the
measured resistance.
