SIG
L
ENT
14 SDM3055 Digital Multimeter
3. Choose a proper voltage range according to the measured circuit.
Table 2- 1 Measurement Characteristics of DC Voltage
Ranges*
200mV
、
2V
、
20V
、
200V
、
1000V
Input Protection
1000V on all ranges
（
HI terminal
）
Configurable
Range, DC input impedance, Rel
NOTE*:
All the ranges enable to obtain 20% value higher than original except
1000V.
Besides, both Manual and Auto are available for setting every
range.
When inputting range is higher than 1000V at 1000V Level, “overload” will
be shown on the screen.
1000V input protection exists in every range.
4. Set the DC input impedance (Only for Manual 200mV and 2V ranges).
Press
【
Input Z
】
to set the DC resistance as “10M” (default value) or
“>10G”. Users can execute DC voltage measurement directly without
modifying this parameter which has been setup before leaving factory.
5. Set AC Filter function.
Press
【
Filter
】
to open or close the AC Filter. (
NOTE: Only DC Voltage and
DC Current have this function
.)
6. Set relative value (Optional operation).
Press
【
Rel
】
to open or close Relative math function. When it is opened, the
reading displayed is a relative value which comes from the result of actual
measurement value subtracts the value that has been set. (Please refer to
“ Math Functions”
in Chapter 2 to know about the details.)
7. Read measurement result.
Select required measurement rate (reading rate) by pressing
【
Speed
】
and read the measurement result.
8. View history data.
There are four types of way to view historical data: “Number”, “Bar
Meter” ”Trend Chart” and “Histogram”.
