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AC Flatness Adjustment Procedure
Description
NOTE
Equipment Setup
Chapter 3
An AC adjustment is performed on the AFG by reading a series of voltages
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 AC flatness calibration procedure at one-year intervals.
This procedure uses a firmware routine to adjust the AFG's AC calibration
constants. The
CALibration[:AC]:BEGin
sequence and the
next calibration point. All AFG settings are performed by the firmware
routine.
If an error occurs at any time during the procedure, abort (
Perform a complete autocalibration on the DMM (unless an
–
autocal has been performed within the last 24 hours)
Follow the power meter manufacturer's instructions for
–
performing an autocalibration and correcting for the power sensor
Connect the equipment as shown in Figure 3-2
–
Set the power meter to measure RF power in watts
–
Figure 3-2. Flatness Adjustment Setup (Power Meter)
command starts the AC calibration
command steps the AFG to the
CALibration[:AC]:POINt?
) and start over.
*RST
Adjustments 69
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