Rigol DM3068 Spécifications télécharger pdf (Page 38)

RIGOL Chapter 2 Performance Test

Service Guide for DM3068

2-8

2. 5 Routine Test

2.5.1 Zero-offset Test

The zero-offset test inspects the meter’s offset performance at the point of zero. It is

necessary only when a regular offset is occurred to a function or range.

To perform a zero-offset test:

1. Make sure you have carefully read the “Test Conditions”.

2. Use a 4-terminal short-circuiter to short connect the HI-LO and Sense HI-LO for

DC voltage and resistance measurements (see figure below) and open both

200mA and 10A current input terminals in current measurement.

3. Perform a step-by-step test for the functions under different ranges specified in

the following table and set the integration time to 100PLC. Please note that none

of the math function is allowable unless otherwise stated.

4. Compare the tested results with the limits in the table.

Figure 2-2 Zero-offset test connection

Table2-3 Zero-offset test items

Function

[1]

Range

Input

signal

Quick

Test

[3]

Allowable Error Range

24 hours

days

year

DC Voltage

200.000mV

short

±4μV

±5μV

2.00000V

short

±10μV

±12μV

20.0000V

short

±80μV

±100μV

200.000V

short

± 1.2mV

1000.00V

short

± 6mV

± 10mV

DC Current

200.000μA

open

± 24nA

± 30nA

2.00000mA

open

± 60nA

20.0000mA

open

±2.4μA

±3μA

200.000mA

open

±4μA

±6μA

2.00000A

open

±400μA

10.0000A

open

± 1mA

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 69 70

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Rigol DM3068 Spécifications Page 38

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