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Chapter 3
Adjustments
Introduction The procedures in this chapter show how to perform the following
electronic adjustments for the AFG:
• DC Accuracy
• AC Flatness (250 kHz and 10MHz filters)
• Skew
NOTE
The DC adjustment procedure should be performed before the AC flatness
adjustment procedures.
Required
Equipment
See Table 1-1 for test equipment required for the procedures described in
this chapter.
Recommended
Environment
Before performing these procedures, allow the AFG to warm up for at least
one hour. The temperature should be within
±5
o
C of T
cal
(the temperature
of the most recent calibration), and between 18
o
C and 28
o
C.
Calibration Commands
This section provides a brief description of commands that relate to
calibration of the AFG. More information on these commands can be found
in the Command Reference section of the Agilent E1445A User’s Manual.
• CALibration:COUNt? returns the number of times that the AFG
has been calibrated. Each adjustment procedure in this chapter
increments the calibration number by 1.
• CALibration:SECure:CODE <code> sets the code that disables
calibration security. The code is set at the factory to "E1445A".
Calibration security must be disabled before changing the code.
Agilent E1445A Service Manual Adjustments 83