HP 6268B Operating And Service Manual

TABLE OF CONTENTS
Section Page
I GENERAL INFORMATION _1-1
1-1 DESCRIPTION .11
1-8 SPECIFICATIONS .1-1
1-10 OPTIONS .1-2
1-12 INSTRUMENT/MANUAL
IDENTIFICATION.1-2
1- 15 ORDERING ADDITIONAL
MANUALS .1-3
II INSTALLATION . 2 1
2- 1 INITIAL INSPECTION.2-1
2-3 Mechanical Check .2-1
2-5 Electrical Check.: . . 2-1
2-7 INSTALLATION DATA .2-1
2-9 Location and Cooling .2-1
2-11 Outline Diagram.2-1
2-13 Rack Mounting .2-1
2-15 INPUT POWER
REQUIREMENTS .2-1
2-17 INPUT LINE VOLTAGE OR
FREQUENCY CONVERSION . 2-2
2-20 Converting a Standard Instrument
to 208-Volt Operation (Models
6259B, 6261 B, and 6268BL . . 2-2
2-22 Converting a Standard Instrument
to 208-Volt Operation (Models
6260B and 6269B).2-2
2-24 Converting a Standard Instrument
to 115-Volt Operation (Models
6259B, 6261 B, and 6268B). . . 2-2
2-26 Converting a Standard Instrument
to 115-Volt Operation (Model
6260B) .2-3
2-28 Converting a Standard Instrument
to 50Hz Operation .2-3
2 30 INPUT POWER CONNECTIONS . 2-3
2- 32 REPACKAGING FOR
SHIPMENT.24
II! OPERATING INSTRUCTIONS .3-1
3- 1 TURN-ON CHECKOUT
PROCEDURE.3-1
3-3 OPERATING MODES.3-2
3 6 NORMAL OPERATING MODE. . 3-2
3-8 Constant Voltage Operation .... 3-2
3-10 Constant Current Operation .... 3-2
3-12 Overvoltage Trip Point
Adjustment.3-2
Section Page
III 3-15 Connecting The Load .3-3
(con't.) 3-20 Operation With No Load.3-3
3-22 Operation Beyond Rated
Output .3-3
3-24 OPTIONAL OPERATING
MODES.3-3
3-27 Remote Voltage Sensing .3-3
3-34 Remote Programming .3-5
3-51 Auto-Parallel Operation.3-8
3-57 Auto-Series Operation.3-8
3-67 Auto-Tracking Operation.3-10
3-76 SPECIAL OPERATING
CONSIDERATIONS.3 12
3-77 Pulse Loading.3-12
3-79 Output Capacitance.3-12
3-82 Reverse Voltage Protection .... 3-12
3-85 Reverse Current Loading.3-12
3-87 Battery Charging.3-12
3- 91 Battery Discharging.3-13
IV PRINCIPLES OF OPERATION . . 4 1
4- 1 OVERALL BLOCK
DIAGRAM DISCUSSION_4-1
4-16 DETAILED CIRCUIT
ANALYSIS.4-3
4-17 Preregulator Control Circuit .... 4-3
4-27 Overvoltage Limit Circuit.4-4
4-29 Series Regulator and Driver .... 4-4
4-31 Short-Circuit Protection .4-4
4-33 Constant-Voltage Comparator ... 4-4
4-40 Constant-Current Comparator ... 4-5
4-45 Voltage Clamp Circuit.4-6
4-48 Mixer and Error Amplifiers .... 4-6
4-52 Overvoltage Protection Crowbar. . 4-6
4-58 Turn-On Control Circuit .4-7
4-61 Reference Regulator.4-7
4-66 Meter Circuit.4-7
4- 70 Additional Protection Features . . 4-7
V MAINTENANCE.5-1
5- 1 INTRODUCTION .5-1
5-3 TEST EQUIPMENT
REQUIRED.5-2
5-5 PERFORMANCE TEST.5-2
5-7 CONSTANT-VOLTAGE TESTS. . 5-2
5 38 CONSTANT-CURRENT TESTS. . 5-6
5-49 TROUBLESHOOTING.5-8
iii

HP 6268B Specifications

General

Brand	HP
Model	6268B
Category	Power Supply
Language	English