C-2 Calibration Program Model 2500 Service Manual
 
Introduction
This appendix includes a calibration program written in Basic to help you in calibrating 
the Model 2500 Dual Photodiode Meter. Refer to Section 2 for more details on calibration 
procedures, equipment, and connections. Appendix B covers calibration commands in 
detail.
 
Computer hardware requirements
The following computer hardware is required to run the calibration programs:
• IBM PC compatible computer. 
• Keithley KPC-488.2, KPS-488.2, or KPC-488.2AT, or CEC PC-488 IEEE-488 
interface for the computer. 
• Three shielded IEEE-488 connecting cables (Keithley Model 7007).
 
Software requirements
In order to use the calibration programs, you will need the following computer software:
• Microsoft QBasic (supplied with MS-DOS 5.0 or later) or Quick Basic.
• MS-DOS version 5.0 or later or Windows 95/98.
• HP-style Universal Language Driver, CECHP.EXE (supplied with Keithley and 
CEC interface cards listed above).
 
Calibration equipment
The following calibration equipment is required:
• Keithley Model 263 Calibrator/Source.
• Keithley Model 2001 DMM.
See Section 2 for detailed equipment specifications.