back light on but no read out

[dennis February 3, 2016 at 8:51 pm Post count: 0]

#3131 Reply |

I have a D69-30 panel meter. Back light works fine. I Applied 12vdc pos. to pin 1, 12vdc neg. to pin 2, no read out. I reversed the polarity and get EEE -1 for a display. Is this a bad meter? I need the meter ASAP and ordered another one from Amazon yesterday. Part # 090749, ASIN B00CHX7ZVA

[DrokKeymaster February 4, 2016 at 3:58 am Post count: 2971]

#3137 Reply |

Dear Dennis，
This meter need extra power supply.
See the following picture.

You have to connect this meter with power supply and your measure side.
Hope this will help you.
If this can’t help you, please feel free to contact us.
Best regards

[dennis February 8, 2016 at 7:42 pm Post count: 0]

#3170 Reply |

I applied 12vdc to pin 3 & 4 and had the backlight. At the same time, I applied 12vdc pos. to pin 1 & 12vdc neg. to 2 and all I had was a backlight, no readout. While 3 & 4 were still connected, I reversed polarity to pin 1 & 2. That is when I received the EEE -1 display. Is this a defective meter or is it wired incorrectly.

[dennis February 8, 2016 at 8:17 pm Post count: 0]

#3171 Reply |

What is the tolerance of the power supply. Is it 8.0vdc – 12.0vdc exactly or is there a +/- % that it can handle ? Example 12vdc battery voltage of 12.29vdc?

[DrokKeymaster February 17, 2016 at 6:26 am Post count: 2971]

#3342 Reply |

Hello dennis,
Thank you for your message.
The module needs isolated power supply which means the power supply terminal and the measuring terminal should be isolated, or the meter will be burnt. Could you please send us an email to service at droking dot com to tell us how you install the module? It is better that you can send us some photos of the installation.
With your help, we can consult to our technician and find out a solution more effectively.
Best regards

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