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DC Adjustment Procedure
Description
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 routine to adjust the AFG’s DC calibration
constants. The 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 the firmware
routine.
NOTE
If an error occurs at any time during the procedure, abort (*RST) and start over.
Equipment Setup
• Perform a complete autocalibration on the DMM (unless an
autocal has been performed within the last 24 hours)
• Connect the equipment as shown in Figure 3-2
Figure 3-2. DC Adjustment Setup
Agilent E1445A Service Manual Adjustments 87