Chapter 1 Test Overview RIGOL
DM3058/DM3058E Performance Verification Guide
times higher than the accuracy specification of the test instrument.
When performing the DC voltage, DC current and resistance gain calibrations, the "0"
output of the calibrator must be correct. To reduce the error caused by the connecting
cable, the connecting cable must be adequately warmed up (for about 5 minutes)
each time when the connecting cable or the short-circuiter is re-connected.
Input Connection
For the zero offset verification, please use copper or copper alloy low thermoelectric
potential 4-terminal short-circuiter. For the capacitance verification, please use coaxial
cable and connect its shielding layer with the LO terminal. For the verifications of the
other functions, please use Teflon shielded twisted pair (as short as possible) to
connect the multimeter and calibrator; the HI and LO terminals must be connected
with twisted pair; the HI-Sense and LO-Sense terminals must be connected with the
twisted pair. The shielding layer of the cable must be connected to the reference
ground. This kind of connection can reduce the effect of the thermoelectric potential
and external interference.
Test Result Record
Record and keep the test result of each test. In "Appendix Test Record Form" of
this manual, a test result record form of DM3058/DM3058E digital multimeter which
lists all the test items and their corresponding performance specification limits as well
as spaces for users to record the test results, is provided.
It is recommended that users photocopy the test record form before each test and
record the test results in the copy so that the form can be used repeatedly.
Specifications
The test limits of each test item, calculated based on the technical specifications of
DM3058/DM3058E, is provided in chapter 2. For the technical specifications of
DM3058/DM3058E, refer to
DM3058/DM3058E User’s Guide
or
DM3058/DM3058E
Data Sheet
(can be downloaded from www.rigol.com).
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