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User's Manual
3. Select the appropriate range according to the size of the input DC voltage.
The user can press [Range] to select a measuring range or use the front panel keys
to quickly select a range. The automatic range automatically selects a range for the
measurement based on the input. Compared to the manual range, the automatic range is
more convenient, but the measurement speed is slower.
Table 0-3
Scale*
Input Protection
Configuration
Parameter
Notes*
Except 1000V, all ranges are allowed to over range by 20%.
"OL" will be displayed when the input exceeds 1050V in 1000V range.
Input protection of 1000V is for every range.
4.
Set DC input impedance (only for 20V and the below scale)
The input impedance has "Auto" and "10M" two options, in 20V and below scale, "Auto" that
indicates the input resistance is greater than 10GΩ, the input resistance is 10MΩ in other
cases.
5.
Set the integral time
Press the [Integral time] to select an integral time for the measurement. Selecting 100
PLC, it provides the best noise rejection and resolution, but the slowest measurement
speed.
6.
Set automatic zeroing
Press the [Auto Zero] to enable or disable this function. Auto zero provides the most
accurate measurements, but requires additional time to perform the zeroing
measurement. When auto-zero is enabled, the multimeter will take an internal
measurement of the offset after each measurement. This measurement will subtracted
its measured value from the previous reading. In this way, the offset voltage on the input
circuit of the multimeter affect the measurement accuracy can be avoided.
Instruments.uni-trend.com
Figure 0–11 Measuring Connection of DC Voltage
200mV, 2V, 20V, 200V, 1000V
All scales are DC 1000V or AC 750Vrms (Hi end)
Range, input impedance, reading rate, the set value of
relative operation
UT8806E Desktop Digital Multimeter
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