ProfiLux 3Ex: BNC termination in box - purpose?

[themoose]

Hi,

In the box in which the PL3Ex was delivered there was also a BNC termination.
Although I do understand what such a termination is for, I could not find any information on which of the two BNC inputs on the 3Ex it was meant to be placed: Conductivity or Redox!?

Ruud

[legau]

Just for calibration. Software tells you .....

[Wirus]

it was meant to be placed: Conductivity or Redox!?

It´s for calibration of the Redox input, it´s used to generate zero mV (it simple shortcuts input)

[themoose]

It´s for calibration of the Redox input, it´s used to generate zero mV (it simple shortcuts input)

Thank you for your reply (both Legau and Wirus)!
Just wondering why nothing is mentioned on this in the User Manual, not in 1.3 Included in delivery nor in 1.5.11 Redox chapters