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User and Programming Manual - Rev H
California Instruments
May 2000
P Series
26
6. Calibration
Routine calibration should be performed every 12 months. Non-routine calibration is only
required if a related assembly is replaced or if the periodic calibration is unsuccessful.
The calibration involves removing the top cover from the power source. Remove the line power
from the power source before removing the top cover. Some of the adjustments are on the
Oscillator Assembly A4. Other adjustment are on the DC-AC Board Assembly. Refer to
Figure 6-3 for the location of the adjustments.
6.1 Calibration Equipment
Digital Multimeter:
Fluke 8506A or HP 34401A
100 milliohm Current Shunt:
Isotek Model RUG-Z-R100-0.1 or equivalent
Load Bank:
Various power load resistors will be needed.
Table 2: Load and Current
Model
Range
Current
max
Load
1251P
135V
9.2A
14.6
Ω
1251P
270V
4.6A
58.6
Ω
1001P
135V
7.4A
18.2
Ω
1001P
270V
3.7A
72.9
Ω
801P
135
6.0A
22.5
Ω
801P
270
3.0A
90.0
Ω
6.2 Routine Calibration
Setup:
Connect the test equipment to the power source as shown in Figure 6-1. Refer to Figure 6-3
for adjustment locations.