Rigol DM3051 Especificações descarregar pdf (Página 119)

RIGOL

Programming Guide for DM3000 Series

4-3

Example 2 : Elimination of test impedance error

Purpose: To eliminate impedance error of test down-lead

In measuring the smaller resistance, the impedance of test down-lead leads to error.

So uses should eliminate the impedance error of test down-lead before measuring.

The programming steps:

0 *RST /*reset */

1 *IDN? /*query equipment ID*/

2 :function:resistance /*turn on 2WR measue function*/

3 :measure:resistance□MIN /*set the two circuits resistance range as 200Ω*/

4 /*at the times, please connect the red and black table T for measuring

resistance*/

5 :calculate:function□AVERAGE /*turn on AVERAGE calculation function*/

6 :calculate:statistic:average? /*query the average resistance*/

7 /*note the resistance value: 3.302198e-01 */

8 :calculate:function□NULL /*turn on NULL calculation function*/

9 :calculate:NULL:offset? /*query the NULL calculation offset, and use it for

examining the equipment*/

10 /*here , the return value is 0*/

11 :calculate:NULL:offset□0.330219 /*set offset as 0.330219*/

12 :calculate:function□NULL /* set NULL calculation with the above

offset*/

13 :calculate:function□AVERAGE /*turn on AVERAGE calculation function*/

14 :calculate:statistic:average? /*query the average resistance*/

15 /*the returned value is 3.173456e-04*/

Remark:

1. Before sending the fifth command, to do send the fourth commad.

2. The fifteenth line shows: the above calculation lowers the error three orders. And

the test to eliminate the impedance error of test down-lead is successful.

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Rigol DM3051 Especificações Página 119