This window is used to set the output of the temperature converter or pulse isolator to a known current value for loop testing purposes. The current value can be set between 0.001mA and 22.250mA. Once this window is closed or the value is set to 0.000mA, the output returns to the current value dependent upon the process variable.
For the two-channel MTLx576 the data from channel1 or channel2 is selected through the window within the display screen.
This should only be activated while the process variable is not monitored by a closed-loop control system.