DC Adjustment ProcedureDescription
A DC adjustment is performed on the AFG by reading a series of voltages and
resistances output by the AFG, then entering those values back into the AFG.
After all measurements have been completed, new calibration constants are
calculated and stored in non-volatile memory. To ensure accuracy, perform the
DC calibration procedure at one year intervals.
This procedure uses a firmware rout ine to adjust the AFG’s DC calibration
constants. T he CALibration[:DC]:BEGin command starts the DC calibration
sequence and the CALibration[:DC]:POINt? command steps the AFG to the
next calibration point. All AFG settings are performed by th e firmwa re
routine.
NOTE If an error occurs at any time during the proced ure, abort (*RST) and start ov er.
Equipment Setup
•Perform a complete autocalibration on the DMM (unl es s an
autocal has been performed within the last 24 ho urs)
•Connect the equipment as shown in Figure 3-2
Figure 3-2. DC Adjustment Setup