ADDENDUM

I. Generally Applicable Annotations

Consistent with good engineering practice, leads attached to customer accessible signal/monitoring ports (such as the l0-pin Control Connector, the 7-pin Analog Connector, the 7-pin Digital Port/Trigger Connector, screw terminal Barrier Blocks, etc.) should be twisted and shielded to maintain the instrument's specified performance.

II. CE'92 Product Specific Annotations

When tested for radiated susceptibility as called for in EN 50082-1 per the EC EMC directive, the following changes in the Supplementary Characteristics of the 6621A and 6623A have been noted:

6621A

When subjected to radiated field strengths of 3 volts/meter in the vicinity of 90 MHz, the full scale programming accuracy of channel 2 increases from 31 millivolts at 20 volts output to 700 millivolts.

The accuracy reverts to the published value of 31 millivolts when the field is reduced to 2 volts/ meter.

When subjected to radiate field strengths of 3 volts/meter in the vicinity of 200 MHz, the full scale readback accuracy of channel 1 increases from 23 millivolts at 5 volts output to 100 millivolts.

The accuracy reverts to the published value of 30 millivolts when the external field is reduced to 2 volts/meter.

6623A

When subjected to radiated field strengths of 3 volts/meter in the vicinity of 160 MHz, the full scale programming accuracy of channel 1 increases from 31 millivolts at 20 volts output to 50 millivolts.

The accuracy reverts to the published value of 31 millivolts when the field is reduced to 2.5 volts/ meter.

When subjected to radiate field strengths of 3 volts/meter in the vicinity of 160 MHz. the full scale readback accuracy of channel 1 increases from 30 millivolts at 5 volts output to 50 millivolts.

The accuracy reverts to the published value of 30 millivolts when the external field is reduced to 2.5 volts/meter.

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HP 6623A, 6624A manual Generally Applicable Annotations, II. CE92 Product Specific Annotations, 6621A
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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.
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