Table C-l. Command Summary (continued)

Command

 

Description

 

 

 

DSP?

 

Queries the present status of the display (see page 78). Response is either a 1 (on)

 

 

or a 0 (off).

DSP " xxxxxxxxxxxx”

 

Puts the quoted string on the power supply's front panel display (see page 79).

 

 

Only numerals, upper case letters, and spaces are allowed (12 characters max) in

 

 

the quoted string

*ERR?

 

Queries the present programming or hardware error (see page 79). An error code

 

 

number is returned over the HP-IB to identify the error. In the local mode,

 

 

pressing the ERR key will cause the appropriate error message (not the error

 

 

code) to be displayed at the front panel. The error register is cleared after being

 

 

read.

*FAULT? < ch >

 

Queries the fault register of the specified output channel (see Mask and Fault

 

 

Register, page 74). A bit is set in the fault register when the corresponding bit in

 

 

both the status and the mask registers. The response is an integer 0 to 255. The

 

 

fault register is cleared after being read.

ID?

 

Queries the identification (model number) of the supply. Response can be HP

 

 

6621A, HP 6622A, HP 6623A, HP 6624A, or HP 6627A, as applicable (see ID

 

 

Query, page 79).

IDATA < ch >, < Ilo >, < Ihi >

 

Sends data to calibrate the current setting and readback circuits of the specified

 

 

output channel. Ilo and Ihi are measured values which the supply uses to calculate

 

 

correction constants (see Appendix A).

IHI < ch >

 

Causes the current of the specified output channel to go to the high calibration

 

 

point (see Appendix A).

ILO <ch>

 

Causes the current of the specified output channel to go to the low calibration

 

 

point (see Appendix A).

IOUT? < ch >

 

Queries the measured output current of the specified output channel (see page

 

 

69). The response is a real number. The front panel display can be used to

 

 

monitor the measured output current (and voltage) of the selected output channel.

*ISET < ch >, < current >

 

Sets the current of the specified output channel (see page 69).

*ISET? <ch>

 

Queries the present current setting of the specified output channel (see page 69).

 

 

The response is a real number.

*OCP < ch >, < on/off >

 

Enables the overcurrent protection circuit for the specified output channel. This

 

 

circuit, when enabled, causes the output to go to the off state when the output is in

 

 

the + CC mode. On/off is a 1 to turn on (enable) or a 0 to turn off (disable) the

 

 

circuit (see page 72).

 

 

 

* Indicates that the command can be executed from the front panel.

106 Command Summary

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HP 6624A, 6623A, 6621A manual Table C-l. Command Summary, Dsp?
Page 105 Page 107

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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