Keysight B2980A series electrometer/picoammeter review/teardown

[bsw_m]

Repeated a similar test with my DIY picoammeter. I tried to keep the conditions as close as possible. I used a NK4-1 calibrator as a current source.

[Alex Nikitin]

The GPIB chip has arrived earlier today, so now the K617 is talking and listening again (though the plot below is still from the 2V analogue output measured by K2015).

The warm-up practically from cold (if +28C air temperature can be considered cold, especially in NW England  ) . 1fA/div vertical scale.

Cheers

Alex