Fluke 9100 User Handbook Manual page 180

Final Width = 215mm
10.2-6 Section 10: Calibrating the Model 9100: Calibration Mode
10.2.4.2 The 'Characterise DAC' Screen Display
Listed below are the screen messages which will be displayed as the Characterise DAC
operation proceeds, together with the associated internal operations which are performed:-
Characterisation clear RAM Clears all existing calibration constants associated
with the Characterise DAC operation.
Characterisation polarity Establishes a true zero for the DAC output.
Characterisation impedance Establishes the true ratios of several resistive
dividers which are required to produce certain
Model 9100 outputs.
Characterisation LF AC flatness Establishes a flat frequency response in the Model
9100's direct digital synthesis of low frequency AC
outputs.
Characterisation DAC gains
followed by
Characterisation n = xxxxx Measures the output of the DAC at over 4,000
different points and corrects any linearity errors
detected. The displayed number 'n' represents the
current test number.
When all Characterise DAC operations are complete (note that the entire process takes
around 20 minutes), you will be returned to the Model 9100's Mode Selection screen.