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User Manual
6.4 Non-Routine Output Calibration
The output calibration will not affect the accuracy of the output voltage when the ALC mode is either
ON or in REG mode. In these modes of operation, the output voltage accuracy is determined by th
voltage
measurement accuracy.
The calibration shown in this paragraph wil
phase. The setting of the output calibration coefficients will affect the initial settling time of the ALC
mod
e after power on.
The
amplifier gain is set at the factory and the output calibration coefficients are pre-set. There is no
need to change the factory default settings unless any of the following conditions occurs:
1.
Replacement of the CPU controller board. (CI P/N 6005-703-1)
If th
e output gains are found to be out of tolerance, they need to be adjusted. This requires removal o
the
top cover and should only be done by qualified service personnel. In that case, refer to the non-
routine
calibration section.
The factory output calibration coefficients are shown in the table below.
California Instruments
l be influenced by the gain of the power amplifier for each
Output Phase
A
B
C
Table 6-2: Output Calibration Coefficients - Factory Defaults.
Output Cal Coefficient
2800
2800
2800
2253i / 2253iX
e
f
96
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