Fluke 183 / Tektronix TX1 inaccuracy in voltage measurement

[kdl1950]

Hello everyone,

I have a question about my Fluke 183 = Tektronix TX1.

As can be seen in the pictures, the accuracy in the voltage range is insufficient.
The value is actually always too high. In the AC and DC area.

Now my question is whether it is defect or whether it can be reset with a calibration?
Maybe someone knows this phenomenon?

The current measurement works in AC and DC without any problems.

Greet Alex

[alm]

As can be seen in the pictures, the accuracy in the voltage range is insufficient.
The value is actually always too high. In the AC and DC area.

Define insufficient. The 1 year accuracy as specified by the manual is 0.07% + 1 count in 3.5 digit mode (+10 counts in 4.5 digit mode) for DCV, and 0.1% + 1 count in ACV mode. Even if the other two meters are accurate within 1 count (something you have not provided any evidence for), the readings appear (just) in spec to me.

[kdl1950]

Hello alm,
thanks for your detailed explanation.
I was just surprised that it is so "inaccurate" compared to the other Fluke measuring devices.

It's not a real Fluke either, it's a Tektronix.

Nevertheless, it is a very good measuring device that I enjoy working with.

Greetings