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EEVBlog 121GW Multimeter Firmware Details

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HKJ:

--- Quote from: Terry01 on December 06, 2018, 05:38:54 pm ---Yes, just did it again and also with my 87v too. The Fluke did it no probs and the 121GW showed OFL. I used a half-"ish" used 9v battery and a 4 ohm power resister as a load.

--- End quote ---

You are aware that maximum for mA input range is 55mA on the 121GW, for larger current you must use the A input.

Terry01:
Well there's why it won't measure 90 mA in the mA range then!   :-DD

HKJ:

--- Quote from: Terry01 on December 06, 2018, 05:50:05 pm ---Well there's why it won't measure 90 mA in the mA range then!   :-DD

--- End quote ---

That is part of the "Low burden voltage", the high mA range is moved to the A input.

It is not that the meter is missing a range, it has one or two current ranges more than most other multimeters. It has 7 current ranges, typically a meters has 5 or 6 current ranges.

Terry01:

--- Quote from: HKJ on December 06, 2018, 06:40:23 pm ---
--- Quote from: Terry01 on December 06, 2018, 05:50:05 pm ---Well there's why it won't measure 90 mA in the mA range then!   :-DD

--- End quote ---

That is part of the "Low burden voltage", the high mA range is moved to the A input.

It is not that the meter is missing a range, it has one or two current ranges more than most other multimeters. It has 7 current ranges, typically a meters has 5 or 6 current ranges.

--- End quote ---

Cool, thanks for the information. I would never have guessed that as there is no indication on the meter around the jacks and I haven't read the manual.

Thanks again  :-+

HKJ:

--- Quote from: Terry01 on December 07, 2018, 02:44:22 pm ---
Cool, thanks for the information. I would never have guessed that as there is no indication on the meter around the jacks and I haven't read the manual.

--- End quote ---

There is a indication, the A terminal is marked "A 500mA", because it is both ampere and 500mA range.

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