Range Switching - UNI-T UTE310 User Manual

User's Manual
The display interface will synchronize the currently selected current range.
Auto represents the automatic range.
When CF=6 or 6A, all ranges will be reduced to half of the original, i.e. Ext1: Auto, 1.25V, 2.5V, 5V.
Ext2: Auto, 25mV, 50mV, 100mV, 250mV, 500mV, 1V.

5.1.3 Range Switching

Manual Range
If the measurement range is set to manual range, the selected range will not be change even if the
size of input signal changes.
Auto Range
If the measurement range is set to auto range, the instrument will synchronous switch range
according to the size of input signal.
Voltage Range Automatic Increasing
When any one the following condition is met, the voltage range will be increased.
The measured voltage Urms exceeds the rated range of 130% (CF=3 or 6).

The measured voltage Urms exceeds the rated range of 260% (CF=6).

Transient sampling voltage or voltage peak Upk exceeds the rated range about 300% (CF=3).

Transient sampling voltage or voltage peak Upk exceeds the rated range about 600% (CF=6 or

6A).
Voltage Range Automatic Decreasing
When any one the following condition is met, the voltage range will be decreased.
The measured voltage Urms is less than or equal to the rated range of 30% and less than the

previous scale of 125%, and the voltage peak Upk is less than or equal to the previous scale of
300% (CF=3).
The measured voltage Urms is less than or equal to the rated range of 30% and less than the

previous scale of 125%, and the voltage peak Upk is less than or equal to the previous scale of
600% (CF=6 or 6A).
Current Range Automatic Increasing
When any one the following condition is met, the current range will be increased.
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