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OPERATING MANUAL
MULTIPLE OUTPUT LINEAR SYSTEM
DC POWER SUPPLIES
Agilent MODELS 6621A, 6622A,
6623A, 6624A, and 6627A
Agilent Part No 5957-6377
Agilent Model 6621A, Serials 3213A-01681 and Above*
Agilent Model 6622A, Serials 3210A-02091 and Above*
Agilent Model 6623A, Serials 3209A-02231 and Above*
Agilent Model 6624A, Serials 3210A-06721 and Above*
Agilent Model 6627A, Serials 3209A-00841 and Above*
* For instruments with higher Serial Numbers, a change page may be included.
Microfiche Part No.
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CERTIFICATION Agilent Technologies certifies that this product met its published specifications at time of shipment from the factory. Agilent Technologies further certifies that its calibration measurements are traceable to the United States National Bureau of Standards, to the extent allowed by the Bureau’s calibration facility, and to the calibration facilities of other International Standards Organization members. WARRANTY This Agilent Technologies hardware product is warranted against defect
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SAFETY SUMMARY The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Agilent Technologies assumes no liability for the customer’s failure to comply with these requirements. BEFORE APPLYING POWER. Verify that the product is set to match the availa
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SAFETY SUMMARY (continued) GENERAL Any LEDs used in this product are Class 1 LEDs as per IEC 825-1. ENVIRONMENTAL CONDITIONS This instrument is intended for indoor use in an installation category II, pollution degree 2 environment. It is designed to operate at a maximum relative humidity of 95% and at altitudes of up to 2000 meters. Refer to the specifications tables for the ac mains voltage requirements and ambient operating temperature range. SAFETY SYMBOL DEFINITIONS Symbol Description Symbol
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DECLARATION OF CONFORMITY according to ISO/IEC Guide 22 and EN 45014 Manufacturer’s Name: Agilent Technologies Manufacturer’s Address: 150 Green Pond Road Rockaway, New Jersey 07866 U.S.A. declares that the Product Product Name: a) Multiple-Output System Power Supply b) Precision Multiple-Output System Power Supply Model Number: a) Agilent 6621A, 6622A, 6623A, 6624A, 6627A b) Agilent 6625A, 6626A, 6628A, 6629A conforms to the following Product Specifications: 1 Safety: IEC 348:1978 / HD 401S1:
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WHAT THIS MANUAL CONTAINS This is the Operating manual for the Agilent 6621A through 6624A and 6627A Series of Multiple Output Linear System Power Supplies. It contains information relating to the installation, operation, and programming of these supplies as outlined below. Maintenance and troubleshooting instructions are given in a separate Service Manual (Agilent Part No. 5957-6379). Chapter 1.--General Information Chapter 1 contains a general description of the power supplies as well as instr
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Table Of Contents 1 General Information Introduction............................ .......................................................................................................................11 Safety Considerations....................................................................................................................................11 Instrument and Manual Identification.... ..................................................................................................
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Table Of Contents (continued) Positive and Negative Voltages.................................................................................................................49 Remote Voltage Sensing..................... ..........................................................................................................49 Remote Sense Connections................... ....................................................................................................50 Output Noise
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Table Of Contents (continued) Setting Voltage................................. .........................................................................................................84 Setting Current...........................................................................................................................................84 Enabling/Disabling an Output...................... .............................................................................................
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1 General Information Introduction This chapter contains a general description of your power supply, as well as its performance specifications. Information about options, accessories, and GP-IB cables is also provided. This manual describes all five models in the Agilent 6621A- 6624A, and 6627A power supply family. Unless stated otherwise, the information in this manual applies to all of these models. Information that is specific to one model only is identified as such in this manual. Safety Con
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Accessories 10833A GP-IB cable, 1 m (3.3 ft) 10833B GP-IB cable, 2 m (6.6 ft) 10833C GP-IB cable, 4 m (13.2 ft) 10833D GP-IB cable, 0.5 m (1.6 ft) 10834A GP-IB connector extender Slide mount kit (1494-0059) Description The Agilent 6621A-6624A, and 6627A Multiple Output Linear Power Supplies feature a combination of programming capabilities and linear power supply performance that make systems applications. The five models in this family offer a total of up to 200 watts of output power, with volt
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Programmable delay time for service request and OCP mask. Voltage, current, and overvoltage calibration. GP-IB interface selftest. Message display capability on the front panel. Output connections are made to rear panel screw terminals. Either the positive or negative output terminal can be grounded, or the output can be floated up to ± 240 Vdc (including output voltage) from chassis ground. Output voltage can be locally or remotely sensed, and identical outputs can be operated in series or para
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The power supply has no potentiometers. Each output is individually calibrated over the GP-IB using calibration commands (see Appendix A). Correction factors are calculated by the power supply during calibration and are stored in a non-volatile memory which is located on the supply’s GP-IB board. The supply contains no batteries. Output Boards The output boards are linear dc power supplies. Each isolated output has the L-shaped operating curve described in Description, page 12 and Figure 1-1. Th
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Specifications Table 1-2 lists the performance specifications for the Agilent 662xA power supplies. Performance specifications describe the instrument’s warranted performance. The service manual, Option 9l0, contains procedures for verifying the performance specifications. Table 1-3 lists the supplemental characteristics for the Agilent 662xA supplies. Supplemental characteristics are type-tested or typical values, which are based on a product sample and, while representative, are not guaranteed
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Programming resolution: Average programming step size. Current Sinking ( - Current): Each output can sink as well as source current. The sinking capability is not programmable and depends upon the output voltage. The current sinking capability is described in greater detail in Chapter 4. Figure 1-3. Output Response Characteristics 16 General Information
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Table 1-2. Specifications PERFORMANCE SPECIFICATIONS (0 to 55°C unless otherwise specified) Outputs: 40 W Low 40 W High 80 W Low 80 W High Voltage Voltage Voltage Voltage DC Output Ranges: All outputs will accept voltage programming commands 1% higher than those listed and current programming commands 3% higher than those listed. Also, the minimum programmable current values are slightly above zero amps for each output. (See Table 5-4). Low Range 0-7 V; 0-5 A 0-20 V; 0-2 A 0-7 V; 0-10 A 0-20 V:
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Table 1-3. Supplemental Characteristics Outputs 40 W Low 40 W High 80 W Low 80 W High Voltage Voltage Voltage Voltage Temperature Coefficient: Voltage (60 ppm + 0.4 mV)/ °C (60 ppm + 1 mV)/ °C (60 ppm + 0.4 mV)/ °C (60 ppm + 1 mV)/ °C +Current (160 ppm +0.2mA)/°C (160 ppm +0.1 mA)/°C (160 ppm +0.4mA)/°C (160 ppm +0.2 mA)/°C OVP (130 ppm + 1 mV)/ °C (130 ppm + 2 mV)/ °C (130 ppm + 1 mV)/ °C (130 ppm + 2 mV)/ °C Readback Temperature Coefficient: Voltage (40 ppm +0.3 mV)/°C (40 ppm +0.7 mV)/°C (40
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Table 1-3. Supplemental Characteristics (continued) Outputs 40 W Low 40 W High 80 W Low 80 W High Voltage Voltage Voltage Voltage Programming Resolution: Voltage 6 mV 15 mV 6 mV 15 mV +Current 25 mA 10 mA 50 mA 20 mA OVP 100 mV 250 mV 100 mV 250 mV Readback Resolution: Voltage 6 mV 15 mV 6 mV 15 mV + or-Current 2 mA 0.8 mA 4 mA 1.6 mA Fixed Overvoltage Protection: (Measure at output terminals +V and -V): Minimum 22.5 V 56 V 22.5 V 56 V Nominal 24 V 60 V 24 V 60 V Maximum 26 V 64 V 26 V 64 V AC I
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Table 1-3. Supplemental Characteristics (continued) Output Impedance: Approximated by a resistance in parallel with an inductance (see graphs in Figure 1-7). The values for each output are: 40 W Low Voltage 40 W High Voltage 80 W Low Voltage 80 W High Voltage 0.15Ω, 2.0μH0.3 Ω, 5 μH 0.15 Ω, 0.8 μH0.5 Ω, 3 μH Safety Agency Compliance: This series of power supplies is designed to comply with the following standards: IEC 348, UL 1244, and CSA 22.2 No. 231. Dimensions: (all models) Height = 132.6 mm
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Figure 1-4. CV Operation with Capacitive Load, Stability Graph for all Outputs General Information 21
