Repeat commands two through eight for any other outputs that must be calibrated on your power supply. After you have completed calibration of all outputs, turn the calibration mode off by sending the CMODE0 command (see step 1) to the power supply. The correction constants are stored in memory at this time.

Calibration Program

The following calibration program can be used as is, provided you have an HP Series 200 computer with the BASIC programming language and an Agilent 3456A voltmeter. The calibration program is written with the assumption that your power supply is at address 705 and the voltmeter is at address 722. The program will ask you which output is to be calibrated and will prompt you to make the voltage and current calibration connections shown in Figure A-1.

10 ! CALIBRATION EXAMPLE

20 !

30ASSIGN @Ps TO 705

40ASSIGN @Vm TO 722

50COM /lnstr/ @Ps,@Vm

60

Shunt_resistor=.1

70

!

80OUTPUT @Ps;"CLR"

90OUTPUT @Vm;"H T4"

100TRIGGER 722

110

ENTER @Vm;Temp

! CLEAR VOLTMETER OUTPUT BUFFER

120OUTPUT @Ps;"CMODE 1"

130!

140Start_loop: ! LOOP TO HERE FOR ADDITIONAL OUTPUTS

150!

160INPUT "ENTER OUTPUT CHANNEL TO BE CALIBRATED (1,2,3,or 4)’’,Chan

170DISP ’’SET UP OUTPUT ";Chan;" FOR VOLTAGE CALIBRATION & PRESS CONTINUE’’

180PAUSE

190!

200OUTPUT @Ps;’’VHI’’;Chan

210Vhi = FNDvm

220!

230OUTPUT @Ps;"VLO";Chan

240Vlo = FNDvm

250!

260OUTPUT @Ps;’’VDATA";Chan,Vlo,Vhi

270!

280IF FNPs _ err< >0 THEN Finish

290!

300OUTPUT @Ps;"OVCAL";Chan

310REPEAT

320DISP "WAITING FOR OVERVOLTAGE CALIBRATION"

330UNTIL BlT(SPOLL(@Ps),4)

340!

350IF FNPs _ err < > 0 THEN Finish

360!

370DISP ’’SET UP OUTPUT ";Chan;" FOR CURRENT CALIBRATION & PRESS CONTINUE"

380PAUSE

390!

400OUTPUT @Ps;’’IHI";Chan

410Ihi = FNDvm/Shunt _ resistor

420!

430OUTPUT @Ps;"ILO";Chan

440Ilo = FNDvm/Shunt _ resistor

450!

460OUTPUT @Ps;’’IDATA";Chan,Ilo,Ihi

Calibration Procedures 93

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Agilent Technologies 6623A, 6621A manual Calibration Program, 10 ! Calibration Example, Clear Voltmeter Output Buffer, Pause

6627A, 6621A, 6624A, 6623A, 6622A specifications

Agilent Technologies is renowned for its high-quality electronic test and measurement equipment, and the Agilent 6600 series is no exception. This series includes models like the Agilent 6621A, 6622A, 6623A, 6624A, and 6627A, each designed to meet the needs of various application requirements, making them an essential part of modern laboratories.

The Agilent 6621A is a single-output DC power supply that provides a stable output voltage and current, making it ideal for testing and powering electronic devices. It features a low noise specification, which is crucial for sensitive applications. With a maximum output voltage of 30V and a current of 3A, it offers flexibility for a range of projects, from powering prototypes to performing benchmark tests.

The Agilent 6622A, a dual-output model, enhances versatility by allowing users to power two devices concurrently. It delivers output voltages of up to 20V and a total output current of 5A, which is perfect for powering circuit boards with multiple components. The built-in voltage and current limiting functions protect the equipment under test, preventing any potential damage.

On the other hand, the Agilent 6623A provides additional capabilities with its three outputs, making it particularly suitable for complex testing procedures. With a maximum voltage of 20V and output current reaching 6A across all channels, it ensures that multiple loads can be powered simultaneously without compromising performance.

The Agilent 6624A further pushes these capabilities with its higher output power. This model boasts two outputs with a combined maximum output of up to 6A, supporting devices that require more demanding power levels. Its advanced control features allow for precise voltage and current adjustments, enhancing reliability during experiments.

Lastly, the Agilent 6627A stands out as a highly scalable power supply, capable of delivering up to 40V and 7.5A across its multiple outputs. This model is particularly beneficial for applications requiring higher voltages, enabling engineers and technicians to work with a broader array of components and systems.

All models in the Agilent 6600 series incorporate built-in protection features to guarantee safety during testing. They are equipped with memory functions, allowing users to save and recall settings quickly. Additionally, the intuitive interface and various connectivity options make these power supplies user-friendly, ensuring efficient workflow in any laboratory setting. In summary, the Agilent 6600 series offers a compelling combination of versatility, precision, and advanced features, catering to diverse electronic testing applications.