Chapter 1 Test Overview RIGOL
DM3068 Performance Verification Guide
Input Connections
To perform zero offset test, you must use a copper/copper alloy low thermoelectric potential
4-terminal short-circuiter. A coaxial cable whose shielding layer is connected to the LO terminal should
be used for capacitance test. For other function verification tests, Teflon shielded twisted pairs (as
short as possible) should be used to connect the multimeter and calibrator. The cables connecting the
HI and LO terminals as well as the HI-Sense and LO-Sense terminals should be twisted together
respectively. Besides, the shielding layers of the cables must be connected to the reference ground.
This kind of connections can reduce the effect of thermoelectric potential and external interference.
Figure 1-1 Input terminals
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 which lists all the test items and their corresponding performance 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 allowable error range of each test item, calculated based on the specification of DM3068, is
provided in chapter 2. For the technical specifications of DM3068, refer to
DM3068 User’s Guide
or
DM3068 Data Sheet
(can be downloaded from www.rigol.com).
HI-Sense
LO-Sense/200mA
HI
LO
10A
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