TM 11-6625-2958-14&P

may be used in series when a higher output voltage is required in the constant voltage mode of operat ion or when greater voltage compliance is required in the constant current mode of operation. Auto- Series operation permits one-knob control of the total output voltage from a “master” supply.

d.Auto-Parallel Operation. The power sup- ply may be operated in parallel with a similar unit when greater output current capability is required.

Auto-Parallel operation permits one-knob control of the total output current from a “master” supply.

e.Auto-Tracking. The power supply may be used as a “master” supply controlling one or more “slave” supplies furnishing various voltages for a system.

1-7SPECIFICATIONS

1-8 Detailed specifications for the power supply are given in Table 1-1on Page 1-3.

1-9OPTIONS

1-10 Options are customer-requested factory modifications of a standard instrument. The following options are available for the instrument covered by this manual. Where necessary, detailed coverage of the options is included throughout the manual.

Option No.

Description

00550Hz Regulator Realignment: Stand- ard instruments are designed for 57 to 63 Hz operation. Option 005 (factory realignment) is necessary when the instrument is to be operated from a 50Hz ac source. The option consists of changing a resistor in the preregu - lator circuit and adjusting the prereg- ulator tracking.

007Ten-Turn Output Voltage Control: A single control that replaces the coarse voltage control and allows greater resolution in setting the out- put voltage.

008Ten-Turn Output Current Control: A single control that replaces the coarse current control and allows greater resolution in setting the out- put current.

009Ten-Turn Output Voltage and Current Controls: Options 007 and 008 on the same instrument.

010Chassis Slides: Enables convenient access to power supply interior for maintenance purposes.

013Three Digit Graduated Decadial Voltage Control: A single control that replaces the coarse voltage control and allows accurate resetting of the output voltage.

Option No.

Description

014Three Digit Graduated Decadial Cur- rent Control: A single control that replaces the coarse current control and allows accurate resetting of the output current.

Rewire for 115Vac Input (6260B only): Consists of replacing the input power transformer and circuit breaker, and reconnecting the bias transformer, RFI choke, and fans for 115Vac operation.

020Voltage Programming Adjustment: Two rear panel mounted, screwdriver- adjustable controls that allow accu- rately setting the zero volt output and the constant voltage programming co- efficient.

021Current Programming Adjustment: Two rear panel mounted, screwdriver- adjustable controls that allow accu- rately setting the zero current output and the constant current programming coefficient.

022Voltage and Current Programming Adjustments: Options 020 and 021 on the same instrument.

Rewire for 115Vac Input (6259B, 6261B, and 6268B only): Consists of replacing the line circuit breaker, and reconnecting the input power transfor- mer, bias transformer, RF I choke, and fans for 115Vac operation.

027Rewire for 208Vac Input: Consists of reconnecting the input power trans- former and bias transformer for 208V ac operation.

1-11lNSTRUMENT/MANUAL IDENTIFICATION

1-12 Hewlett-Packard power supplies are identified by a two-part serial number. The first part is the serial number prefix, a number-letter combination that denotes the date of a significant design change and the country of manufacture. The first two digits indicate the year (10= 1970, 11= 1971, etc.), the second two digits indicate the week, and the letter “A” designates the U.S.A. as the country of manu- facture. The second part is the power supply serial number; a different sequential number is assigned to each power supply, starting with 00101.

1-13 If the serial number on your instrument does not agree with those on the title page of the manual, Change Sheets supplied with the manual or Manual Backdating Changes in Appendix A define the differences between your instrument and the instrument described by this manual.