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SIGLENT
SDM3055 Digital Multimeter 39
DC Input Impedance
DC input impedance is only applicable for DC voltage measurement. When DC
Voltage function is selected, press【Range】 and select 【200mV】 or 【2V】
to show the menu【Input Z】, as the following diagram shows.
Diagram 2- 35 Choose DC Input Impedance
The options of input impedance for DC voltage measurements are 10MΩ and
10GΩ. 10MΩ impedance is general for the Multimeter, but for 200mV and 2V
manual ranges, 10GΩ should be chosen for better result. The current selection
will be saved in nonvolatile memory.
DC input impedance selection:
While the DC input impedance is selected as 10MΩ, the input
impedance of all measurement range is 10MΩ;
While the DC input impedance is selected to 10GΩ, the input
impedance for 200mV and 2V measurement range is 10GΩ; for 20V,
200V and 1000V measurement range is kept at 10MΩ.
The default value of DC input impedance is 10MΩ; settings of DC input
impedance are stored in the nonvolatile memory.
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