Current Programming

To program the current, send the output channel and the programmed value in amps. In the example below, output 1 is programmed to 15 mA.

ISET 1,0.015

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.

When programming a value of current, the voltage set point can be changed if the total power is greater then the power boundary (see Figure 4-2).

Example:

VSET 4,50 Voltage set to 50 V

 

ISET 4,2 ISET to 2 A

Sending the ISET command caused the VSET to be reduced to 16.16 V. This is an example where power limiting changes a supply setting. When this occurs, the "coupled parameter" bit (see Table 5-5) in the status register is set.

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

ISET?

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 GP-IB and read into the controller.

Range Programming

The range can be set by using the VRSET or IRSET commands. The power supply will automatically pick the range that the value sent will fit into.

Examples:

VRSET 1,7 will select the 7 V range

 

VRSET 1,3.2 will select the 7 V range

 

VRSET 1,9.0 will select the 50 V range

 

VRSET 1,50.5 will select the 50 V range

 

IRSET 1,.015 will select the 15 mA range

 

IRSET 1,0 will select the 15 mA range

 

IRSET 1,.020 will select the 0.5 A range

 

IRSET 1,0.1 will select the 0.5 A range

 

 

Note

Ranges will accept values up to 1% greater then full scale for voltage and 3 % for current. Larger

 

numbers will generate a number range error(s).

 

 

When going from the high range to the low range, the present setting must be within the boundary of the low range or the setting will be reduced to the maximum of the low range. If the setting is changed the "couple parameter" bit (see Table 5-5) in the status register will be set to indicate the change.

Remote Operation 73

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Agilent Technologies 6628A, 6626A, 6625A, 6629A manual Current Programming, Range Programming
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6629A, 6625A, 6626A, 6628A specifications

Agilent Technologies, a recognized leader in electronic test and measurement solutions, has developed a series of precision power supplies ideal for a variety of applications in both research and industry. The Agilent 6628A, 6626A, 6625A, and 6629A are part of the Agilent 6000 series and stand out due to their innovative technologies and robust functionalities.

The Agilent 6628A is a triple-output power supply, featuring two 0 to 20 V outputs capable of delivering up to 3 A each, along with a 5 V output that can supply 5 A. This combination is perfect for supplying power to devices that require multiple supply voltages simultaneously, making it an excellent choice for testing and development purposes.

The Agilent 6626A, on the other hand, offers dual output capabilities with higher specifications. Each of its outputs can be adjusted from 0 to 25 V and delivers up to 3 A, providing enhanced flexibility for designers and engineers working with various devices. Additionally, the 6626A's compact size and lightweight design make it easy to integrate into test setups without occupying excessive space.

For applications that require comprehensive monitoring, the Agilent 6625A provides a unique solution with its built-in digital voltmeter (DVM). This power supply comes with two 0 to 25 V outputs, both capable of 3 A. The integrated DVM allows real-time measurement and displays voltage and current values, ensuring accurate readings during experimentation and testing.

Lastly, the Agilent 6629A is designed for high-performance applications, providing up to four outputs, including two adjustable outputs that can be set between 0 to 35 V and deliver 5 A each. This model is particularly suited for environments where multiple devices need to be powered simultaneously with varying voltage requirements.

All four models come equipped with key features including ease of programming, precision regulation, and superior load transient response. They employ advanced technologies like low-noise operation and excellent line regulation, ensuring stable performance under varying load conditions. Additionally, safety features such as overvoltage protection, current limiting, and rapid recovery from overloads guarantee reliable operation.

In summary, Agilent's 6628A, 6626A, 6625A, and 6629A power supplies provide versatile, precise, and reliable solutions for all electronic testing needs. Their characteristics and dedicated functionalities make them indispensable tools for engineers, researchers, and developers across numerous fields. Whether it's for prototyping, testing, or production, these power supplies deliver the quality and performance that professionals expect from Agilent Technologies.
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