Electronic Engineer Discuss

Title: Hantek 2C42 万用表功能测直流电压问题 [Print this page]

Author: colin Time: 2019-5-16 08:00
Title: Hantek 2C42 万用表功能测直流电压问题
万用表未测直流电压时屏幕显示0.172V，直流mV显示244.3mV，交流电压显示0V正常。请问该怎么处理？
MODEL: Hantek2C42
SOFT: 2019041501
PCB:0000000001
FPGA:V04

Author: colin Time: 2019-5-16 08:16
Edited by colin at 2019-5-16 08:27

照片更新

Author: OASJ2YSeeEhBQo1 Time: 2019-5-17 10:34
Edited by OASJ2YSeeEhBQo1 at 2019-5-17 13:29

I am having a similar problem with another 2C42. There is an offset error in DC volts and ohms scale that can't be zeroed and this error is added to the measurement. Is there any fix?
[attach]2868[/attach] [attach]2869[/attach]

Author: colin Time: 2019-5-17 12:33
not fixed till now

Author: amy Time: 2019-5-18 13:10

colin replied at 2019-5-17 12:33
not fixed till now

Are you in China or abroad?
If you are in China, please contact your seller to deal with.

Author: amy Time: 2019-5-18 13:21

OASJ2YSeeEhBQo1 replied at 2019-5-17 10:34
I am having a similar problem with another 2C42. There is an offset error in DC volts and ohms scale ...

Sir, is your 2C42 purchased recently?
Please shorten the two pens. Test DC voltage, will the value return to zero?

We are waiting for other fault scope to return. At present, we are not sure why.

Author: colin Time: 2019-5-18 18:16
Edited by colin at 2019-5-18 18:18

amy replied at 2019-5-18 13:10
Are you in China or abroad?
If you are in China, please contact your seller to deal with.

Thank you Arm.
I'm in China now. My scope supplier tell me contact Hantek for getting further help. Pls find the pictures as below,

Author: OASJ2YSeeEhBQo1 Time: 2019-5-19 02:01

amy replied at 2019-5-18 13:21
Sir, is your 2C42 purchased recently?
Please shorten the two pens. Test DC voltage, will the value ...

Yes, it is very recent Rose sent me them 2 weeks ago. The problem I'm facing with my units is the same as reported by colin, shorting the leads will not zero the devices.
I sent you 2 emails already, let me know if you need more details.

Author: amy Time: 2019-5-25 15:48

colin replied at 2019-5-18 18:16
Thank you Arm.
I'm in China now. My scope supplier tell me contact Hantek for getting further help. ...

Sir, Please send a message to me caiyijun@hantek.com.

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