Fluke 732B - User Manual

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732B/734A

DC Reference Standard

Instruction Manual

PN 869321

March 1992 Rev.3, 11/97

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Limited Warranty and Limitation of Liability2
Declaration of the Manufacturer or Importer3
Bescheinigung des Herstellers/Importeurs3
Electromagnetic Compatibility3
Safety Summary5
Do Not Operate in Explosive Atmospheres6
Do Not Attempt to Operate if Protection May be Impaired6
Table of Contents7
List of Tables11
Introduction and Specifications15
Introduction17
Hardware Options18
734A-7001 Instrument Enclosure18
723B-7001 External Battery and Charger18
Accessory Y734 Rack Mount Kit18
Calibration Options19
000 Special Calibration19
100 Special Calibration and Drift Characterization19
200 On-Site Calibration19
Warranty Information19
Service and Reshipment Information20
Specifications20
Output Voltages20
Load Regulation22
Installation27
Introduction29
Unpacking and Inspection29
Selecting Line Voltage and Accessing the Fuse30
Connecting to Line Power31
Installing a 732B or 732B-7001 in a 734A-7001 Instrument Enclosure31
Operation35
Introduction37
Summary of the Features37
DC Standard Front Panel37
DC Standard Rear Panel37
7001 External Battery and Charger Front Panel37
7001 External Battery and Charger Rear Panel37
7001 Instrument Enclosure Front Panel37
7001 Instrument Enclosure Rear Panel37
Operation43
Powering the Standard45
Setting the BAT Switch46
Charging the Internal Battery46
Powering the Standard from a 732B-700146
Replacing the Internal Battery47
Connecting Cables to the Output48
Connecting the GUARD and GROUND49
Monitoring Oven Temperature50
Resetting the in CAL Indicator50
Monitoring the in CAL Indicator State Remotely50
Monitoring Long-Term Stability51
Minimizing Error Sources52
Mechanically Induced Errors52
Thermal Emfs52
Output Cable Loading52
Theory of Operation55
Introduction57
Overall Functional Description57
Model 734A Functional Description59
Model 732B-7001 External Battery/Power Supply59
Circuit Description59
Reference Circuit59
Generating the 1.018V Output61
Biasing the Refamp for Low Temperature Coefficient61
Sense Current Cancellation61
Buffering of the 10V Output62
Oven Temperature Controller A462
A1 Front Panel Assembly62
Power Supplies and Battery Charger Assembly A563
Overvoltage Protection Circuitry63
Raw DC Power Supply65
Battery Charger65
+11 . 5V Preregulator65
+11 . 5V Low-Dropout Regulator66
-6V Power Supply66
IN CAL Logic66
LED Drive Logic66
AC Power to Battery Power Switching Circuitry67
Battery Circuit67
Rear Panel Connections67
Low-Battery Shutdown Circuitry68
Maintenance71
Introduction73
Service Information73
Replacing the Fuse73
Cleaning the External Surfaces73
Calibration73
Preparing for Calibration74
Preparing for 10V Calibration with Adjustment74
Calibration with Adjustment76
Maintenance Calibration77
Calibration Without Adjustment78
Access Procedures79
Initial Access Procedure79
Replacing the Battery79
Replacing the Oven Assembly83
Accessing the A5 Battery Charger83
Removing the Power Transformer Assembly83
Troubleshooting84
Reference Performance Test84
Troubleshooting the A5 Battery Charger Assembly84
Transformer/Rectifier/Filter85
Battery Charger85
+11 . 5V DC Preregulator85
+11 . 5V DC Regulator86
-6V DC Supply86
IN CAL LED Logic86
List of Replaceable Parts87
Introduction89
How to Obtain Parts89
Manual Status Information89
Newer Instruments89
Service Centers90
Parts90
Schematic Diagrams109

Brand	Fluke
Model	732B
Category	Test Equipment
Language	English

Fluke 732B - User Manual

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