Chapter 2 Performance Verification Test RIGOL
DM3068 Performance Verification Guide
Chapter 2 Performance Verification Test
This chapter introduces the routine test methods of DM3068 performance verification test and the
quick test methods are also contained.
Zero Offset Test
The zero offset test inspects the meter’s offset performance at the zero point. It is necessary only
when a regular offset occurs to a function and range.
The zero offset test procedures are as follows.
1. Make sure you have carefully read the "Test Conditions".
2. Use a 4-terminal short-circuiter to short-circuit the HI-LO and Sense HI-LO terminals for DC
voltage and resistance measurements (as shown in Figure 2-1). Open the circuits of both the
200mA and 10A current input terminals for current measurement.
3. Test the functions under different ranges specified in Table 2-1 one by one. Set the integration
time to 100PLC. Unless otherwise noted, turn off all the math operations.
4. Compare the test results with the limits in the table.
Figure 2-1 Zero offset test connection
Table 2-1 Zero offset test items
Function
[1]
Range
Input
signal
Quick
Test
[3]
Allowable Error Range
24 hours 90 days 1 year
DC Voltage 200.000mV short Q ±4μV ±5μV ±5μV
2.00000V short ±10μV ±12μV ±12μV
20.0000V short ±80μV ±100μV ±100μV
200.000V short Q ±1.2mV ±1.2mV ±1.2mV
1000.00V short ±6mV ±10mV ±10mV
DC Current 200.000μA open Q ±24nA ±30nA ±30nA
HI-Sense
LO-Sense/200mA
HI
LO
10A
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