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General Information

Introduction

This chapter contains a general description of your power supply, as well as its performance specifications. Information about options, accessories, and HP-IB cables is also provided. This manual describes all five models in the HP 6621A- 6624A, and 6627A power supply family. Unless stated otherwise, the information in this manual applies to all of these models. Information that is specific to one model only is identified as such in this manual.

Safety Considerations

This product is a Safety Class 1 instrument, which means that it is provided with a protective earth terminal. This terminal must be connected to a power source that has a 3-wire ground receptacle. Review the instrument and this manual for safety markings and instructions before operation. Refer to the Safety Summary page at the beginning of this manual for a summary of general safety information. Safety information for specific procedures is located at appropriate places in this manual.

Instrument and Manual Identification

Hewlett-Packard power supplies are identified by a two-part serial number, i.e. 2601A-00101. The first part of the serial number (the prefix) is a number/letter combination that denotes either the date of manufacture or the date of a significant design change. It also indicates the country of origin. (Starting at 1960, 26 = 1986; 01 = the first week of the year; A = U.S.A.) The second part of the serial number is a different sequential number assigned to each instrument starting with 00101.

If the serial number prefix on your power supply differs from that shown on the title page of this manual, a yellow Manual Changes sheet that is supplied with this manual explains the difference between your instrument and the instrument described by this manual. The change sheet can also contain information for correcting errors in the manual.

Options

Options 100,120, 220, and 240 simply determine which line voltage is selected at the factory. For information about changing the line voltage setting, see Line Voltage Conversion, page 28.

Option 750 consists of a fault indicator (FLT) and remote inhibit (INH) circuit and relay control, which provide additional shutdown protection should either the HP-IB and/or controller fail. This Option is described in a separate document entitled, "Appendix E Option 750 Operating Instructions for the Multiple Output Linear System DC Power Supply, HP Models 6621A, 6622A, 6623A, 6624A, and 6627A (HP P/N 5957-6372).

#100 Input power, 100 Vac, 47--66 Hz #120 Input power, 120 Vac, 47--66 Hz #220 Input power, 220 Vac, 47--66 Hz #240 Input power, 240 Vac, 47--66 Hz

#700 Computer Interface Intermediate Language (CIIL) #750 Fault (FLT) Remote Inhibit (INH) and Relay Control #908 One rack mount kit (5062-3977)

#909 One rack mount kit with handles (5062-3983) #910 One service manual with extra operating manual

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HP 6621A, 6623A General Information, Introduction, Safety Considerations, Instrument and Manual Identification, Options

6624A, 6621A, 6623A specifications

The HP 6623A, 6621A, and 6624A are precision DC power supplies widely recognized for their reliability and performance in various laboratory and industrial applications. These models are part of HP's 662X series, designed to cater to the needs of engineers, researchers, and technicians who require accurate power sources for their testing and development activities.

The main features of the HP 6623A, 6621A, and 6624A include their high stability, low ripple, and excellent load regulation, ensuring that the output voltage and current remain stable during testing. The power supplies provide multiple output channels, allowing users to power multiple devices simultaneously. The flexibility in setting voltage and current levels makes these models ideal for a wide range of applications, including semiconductor testing, device characterization, and system integration.

One of the standout technologies in the HP 662X series is the use of smart design techniques that minimize noise and enhance output performance. These power supplies incorporate advanced feedback mechanisms to maintain steady output, even under varying load conditions. Additionally, they feature programmable outputs, which means users can adjust the output levels through a connected computer or control system, streamlining the testing process and improving efficiency.

The HP 6623A model offers three independent outputs, with total power capabilities of 40 watts. It includes a 0-20V output, which can deliver up to 2A of current, along with two additional outputs that are adjustable. The 6621A provides a single output option, delivering a maximum of 20V and 2A, making it well-suited for simple applications where a single power source is required. In contrast, the HP 6624A stands out with its four independent output channels, providing a total of 60 watts, making it the most versatile of the three models.

Characteristics of these power supplies include user-friendly interfaces, allowing for easy configuration and monitoring of settings. LED indicators provide real-time feedback on voltage and current levels, enabling users to quickly assess the performance of their tests. Moreover, built-in protection features safeguard both the power supply and the connected devices from overvoltage and overcurrent conditions.

Overall, the HP 6623A, 6621A, and 6624A power supplies embody advanced engineering and design, making them invaluable tools for professionals looking for high-quality, reliable power sources for their electronic testing needs.