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WHAT THIS MANUAL CONTAINS
This is the Operating manual for the HP 6621A through 6624A and 6627A Series of Multiple Output Linear System
Power Supplies. It contains information relating to the installation, operation, and programming of these supplies as
outlined below. Maintenance and troubleshooting instructions are given in a separate Service Manual (HP Part No. 5957-
6379).
Chapter 1.--General Information
Chapter 1 contains a general description of the power supplies as well as instrument specifications and information
concerning options and accessories.
Chapter 2.--Installation Procedures
Chapter 2 contains information to prepare the supply for use. Included in this chapter are power requirements, line
voltage conversion, and HP-IB interface connections.
Chapter 3.--Getting Started
Chapter 3 contains a brief description of the supply's front panel controls and indicators and describes how to turn on the
supply and to check it's operation. An introduction to remote operation over the HP-IB is also given to help a first time
user get started quickly.
Chapter 4.--Output Connections and Operating Information
Chapter 4 contains information about making connections to the supply's output terminals. General operating information
is also provided.
Chapter 5.--Remote Operation
Chapter 5 contains all of the information required to operate the supply remotely via an HP-IB computer. All of the
commands that can be used to program the supplies are described.
Chapter 6.--Local Operation
Chapter 6 contains instructions on using all of the front panel controls and indicators.
Appendix A--Calibration Procedure
Appendix A contains programming steps and procedures that are required to calibrate your power supply. It is
recommended that the power supply be calibrated yearly.
Appendix B--Programming with Series 200 Computer
Appendix B contains Series 200/300 Computer programming examples (in HP extended BASIC language) for your Power
Supply's most frequently used functions.
Appendix C--Command Summary
Appendix C contains an alphabetical listing of all commands that can be sent to a supply.
Appendix D--Error Messages
Appendix D contains a listing and brief explanation of all error codes and messages for all programming and hardware
errors.
Appendix E - Manual Backdating
Appendix E contains backdating information for units with Serial numbers lower than those listed on the title page.