Voltage Programming

To program voltage, send the output channel and the programmed value. In the example below, output 1 is programmed to 5 V.

VSET 1,5

The values you send must always be volts. For example if you want to program 450 millivolts, convert to volts and then send the command:

VSET 1,.45

If the output channel is operating in constant voltage mode (CV annunciator on) then the actual voltage is the programmed voltage, but in CC mode of operation (CC annunciator on), the programmed voltage is the voltage limit for that output.

To readback the programmed voltage setting for output 1, send the query:

VSET? 1

and address the supply to talk. If you want to know the value of the actual output voltage of output 1, send the query:

VOUT? 1

The results are placed on the HP-IB and read into the controller when the supply is addressed to talk.

NOTE

The power supply will round the VSET and ISFT settings to the nearest multiple of their resolution.

 

Table 5-4 lists the average resolution of these settings.

Current Programming

To program the current, send the output channel and the programmed value in amps. In the example below, output is programmed to 1.15 amps.

ISET 1,1.15

The value you send must always be in amps. For example if you want to program 95 milliamps, convert to amps and then send the command

ISET 1,.095

If the output channel is in constant current (CC) mode of operation, then the actual current is the programmed current but if the output is in the CV mode, the programmed current is the current limit of that output.

To readback the programmed current for output 1, send the query and addressing the supply to talk.

ISET? 1

You can also instruct the supply to measure the actual output current at output channel 1 by sending the following query and address the supply to talk.

IOUT? 1

The results are placed on the HP-IB and read into the controller .

Remote Operation 69

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HP 6623A, 6624A, 6621A manual Voltage Programming, Current Programming
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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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