User Manual California Instruments
CSW Series 111
5. Calibration
The 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.
All standard models and configurations of the CSW555 may be calibrated using a PC running
Windows 2000/XP, and the latest version of the CSWGui AC source control software. Refer to
the CSWGui online help file of the CIGUISII software for additional procedures and guidance. To
download the latest version of the CIGUISII, visit www.calinst.com
.
5.1 Calibration Equipment
Digital Phase Meter: Krohn-Hite, Model 6620 or equivalent. (0.01° resolution, 0.02°
accuracy.)
Digital Multimeter: Fluke 8506A or equivalent.
HP 34401A
10 milliohm Current Shunt: Isotek Model RUG-Z-R010-0.1 or equivalent
1 milliohm Current Shunt: Isotek Model RUG-Z-R001-0.1
(All multi-source power
Systems)
Load Bank: Various high power load resistors will be needed.
Computer (Optional) PC to operate California Instruments GUI.
5.2 Calibration Screen Access
Output
To access the OUTPUT CALIBRATION screen for the first time press the MENU key twice to
display the MENU 3 screen. Press the or key several times to highlight OUTPUT CAL.
Press the ENTER key. Type 5000 and press the ENTER key to show the OUTPUT
CALIBRATION screen.
Press the PHASE key to select the phase to be calibrated.
Measurements
To show the MEASUREMENT CALIBRATION screen follow the steps in paragraph 5.2.
Select the MEASUREMENT CAL function instead of OUTPUT CAL from the MENU 2 screen.
If another CALIBRATION screen has been accessed since power-up no password is needed. If
prompted for a password, use the value 5000.
NOTE:
The Output calibration is only used to set the servo correction nominal
Point. It will not affect the programmed output voltage accuracy. It is used
to enhance the settling time. The Measurement Calibration is used for all
programmed voltage output and current limit accuracy.
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