Question
UNCAL and UNDERL appear as small red letters on the display. What do they mean?
UNCAL and UNDERL appear as small red letters on the display. What do they mean?
UNCAL: Press the button CAL to start a total calibration. Watch the display. If messages are displayed, please note them. The messages should disappear after the calibration process has been finished .
UNDERL: In the vector analyzer mode (FSIQ or FSEx+FSE-B7) this message indicates that the signal level at the ADC is below the optimum range. Remedy: Reduce the reference level of the instrument until the message disappears.