Equipment information

Fluke 732B Power supply
Manufacturer:
Model:
732B
Date:
1992
Category:
Group:
Description:
DC Reference Standard

Information

Model 732B is a dc voltage laboratory standard that produces reference voltages of 10V and 1.018V. Model 734A contains four 732B DC Standards in a chassis. The 732B is highly stable, rugged and transportable. Its 10V output excels in stability, and can be used as your direct link in the traceability chain to National standards. You can use the 732B 1.018V output to transfer the "volt" at the 1.018V level from one set of saturated standard cells to another. You can also use the 1.018V output as a working standard with older equipment that requires a standard cell voltage input. The 10V output’s long-term stability, predictable drift rate, low uncertainty, convenient level, and immunity to accidental damage make the 732B or 734A the preferred artifact for maintaining a local standard of voltage. With time characterization (Calibration Option 732B-100) the drift rate for the 10V output is given. This reduces the 10V output uncertainty from 2 ppm/year to 1 ppm/year. All outputs of the 732B can withstand short circuit indefinitely, without damage to the instrument or disruption of the state of calibration. Recovery time for a momentary short is less than 2 minutes; for an extended short, recovery time is less than 2 hours. To maintain calibration as a traceable standard, the 732B must continue to receive uninterrupted operating voltage from ac line power or from the internal battery. If battery voltage drops too low, the front panel IN CAL indicator goes out and recalibration is required. The internal rechargeable battery (if switched on) protects the standard from line power interruption and provides power for hot shipment (shipment under power). The 732B outputs are unaffected as you change between battery or ac line power. Battery operation with a fully charged battery lasts at least 72 hours. You can extend battery operation by connecting an external 12V battery such as Model 732B-7001 to the rear panel MONITOR/EXT BAT IN connector. Plugging the 732B into ac line power for 24 hours fully recharges the internal battery. Four front panel indicators show operating status. Model 732B-7001 External Battery and Charger has all but the IN CAL indicator. · AC PWR lights when the 732B is connected to ac line power. · IN CAL goes out to warn you when the 732B may have lost its calibration. This indicator responds to an excessively large drop in battery voltage or a large change in oven temperature. If battery voltage falls below the level needed to keep the 732B working normally, the IN CAL indicator extinguishes, indicating a loss of the state of calibration. Once power is restored and the output has been verified, you can reset the IN CAL indicator. · LOW BAT blinks to warn you to plug the line cord into ac power when only a few hours of battery operation remain. · CHARGE lights when the battery is being recharged in constant-current charge mode, and is off when the battery is charged to the 90% level. At 90% of full charge, a float charge completes and maintains full charge.

show more

Service and User Manual
Manual Type:
Service and User Manual
Pages:
124
Size:
1.49 Mbytes (1561134 Bytes)
Language:
english
Revision:
3
Manual-ID:
869321
Date:
01 November 1997
Quality:
Scanned document, all readable.
Upload date:
04 February 2017
MD5:
1fb923124ee8103e85369dec750dd778
Downloads:
921

Information

1 Introduction and Specifications ... 1-1 1-1. Introduction ... 1-3 1-2. Hardware Options ... 1-4 1-3. 734A-7001 Instrument Enclosure ... 1-4 1-4. 723B-7001 External Battery and Charger ... 1-4 1-5. Accessory Y734 Rack Mount Kit ... 1-4 1-6. Calibration Options ... 1-5 1-7. 732B-000 Special Calibration ... 1-5 1-8. 732B-100 Special Calibration and Drift Characterization ... 1-5 1-9. 732B-200 On-Site Calibration ... 1-5 1-10. Warranty Information ... 1-5 1-11. Service and Reshipment Information ... 1-6 1-12. Specifications ... 1-6 2 Installation ... 2-1 2-1. Introduction ... 2-3 2-2. Unpacking and Inspection ... 2-3 2-3. Selecting Line Voltage and Accessing the Fuse ... 2-4 2-4. Connecting to Line Power ... 2-5 2-5. Installing a 732B or 732B-7001 in a 734A-7001 Instrument Enclosure 2-5 3 Operation ... 3-1 3-1. Introduction ... 3-3 3-2. Summary of the Features ... 3-3 3-3. 732B DC Standard Front Panel ... 3-3 3-4. 732B DC Standard Rear Panel ... 3-3 3-5. 732B-7001 External Battery and Charger Front Panel ... 3-3 3-6. 732B-7001 External Battery and Charger Rear Panel ... 3-3 3-7. 734A-7001 Instrument Enclosure Front Panel ... 3-3 3-8. 734A-7001 Instrument Enclosure Rear Panel ... 3-3 3-9. Powering the Standard ... 3-11 3-10. Setting the BAT Switch ... 3-12 3-11. Charging the Internal Battery ... 3-12 3-12. Powering the Standard from a 732B-7001 ... 3-12 3-13. Replacing the Internal Battery ... 3-13 3-14. Connecting Cables to the Output ... 3-14 3-15. Connecting the GUARD and GROUND ... 3-15 3-16. Monitoring Oven Temperature ... 3-16 3-17. Resetting the IN CAL Indicator ... 3-16 3-18. Monitoring The IN CAL Indicator State Remotely ... 3-16 3-19. Monitoring Long-Term Stability ... 3-17 3-20. Minimizing Error Sources ... 3-18 3-21. Mechanically Induced Errors ... 3-18 3-22. Thermal EMFs ... 3-18 3-23. Output Cable Loading ... 3-18 4 Theory of Operation ... 4-1 4-1. Introduction ... 4-3 4-2. Overall Functional Description ... 4-3 4-3. Model 734A Functional Description ... 4-5 4-4. Model 732B-7001 External Battery/Power Supply ... 4-5 4-5. 732B Circuit Description ... 4-5 4-6. 10V Reference Circuit ... 4-5 4-7. Generating the 1.018V Output ... 4-7 4-8. Biasing the Refamp for Low Temperature Coefficient ... 4-7 4-9. Sense Current Cancellation ... 4-7 4-10. Buffering of the 10V Output ... 4-8 4-11. Oven Temperature Controller A4 ... 4-8 4-12. A1 Front Panel Assembly ... 4-8 4-13. Power Supplies and Battery Charger Assembly A5 ... 4-9 4-14. Overvoltage Protection Circuitry ... 4-9 4-15. Raw DC Power supply ... 4-11 4-16. Battery Charger ... 4-11 4-17. +11.5V Preregulator ... 4-11 4-18. +11.5V Low-Dropout Regulator ... 4-12 4-19. -6V Power supply ... 4-12 4-20. IN CAL Logic ... 4-12 4-21. LED Drive Logic ... 4-12 4-22. AC Power to Battery Power Switching Circuitry ... 4-13 4-23. Battery Circuit ... 4-13 4-24. Rear Panel Connections ... 4-13 4-25. Low-Battery Shutdown Circuitry ... 4-14 5 Maintenance ... 5-1 5-1. Introduction ... 5-3 5-2. Service Information ... 5-3 5-3. Replacing the Fuse ... 5-3 5-4. Cleaning the External Surfaces ... 5-3 5-5. Calibration ... 5-3 5-6. Preparing for Calibration ... 5-4 5-7. Preparing for 10V Calibration with Adjustment ... 5-4 5-8. Calibration with Adjustment ... 5-6 5-9. Calibration Without Adjustment ... 5-8 5-10. Access Procedures ... 5-9 5-11. Initial Access Procedure ... 5-9 5-12. Replacing the Battery ... 5-9 5-13. Replacing the Oven Assembly ... 5-13 5-14. Accessing the A5 Battery Charger ... 5-13 5-15. Removing the Power Transformer Assembly ... 5-13 5-16. Troubleshooting ... 5-14 5-17. 10V Reference Performance Test ... 5-14 5-18. Troubleshooting the A5 Battery Charger Assembly ... 5-14 5-19. Transformer/Rectifier/Filter ... 5-15 5-20. Battery Charger ... 5-15 5-21. +11.5V DC Preregulator ... 5-15 5-22. +11.5V DC Regulator ... 5-16 5-23. -6V DC Supply ... 5-16 5-24. IN CAL LED Logic ... 5-16 6 List of Replaceable Parts ... 6-1 6-1. Introduction ... 6-3 6-2. How to Obtain Parts ... 6-3 6-3. Manual Status Information ... 6-3 6-4. Newer Instruments ... 6-3 6-5. Service Centers ... 6-4 6-6. Parts ... 6-4 7 Schematic Diagrams ... 7-1 A1 Front Panel PCA ... 7-3 A2 Flex Circuit PCA ... 7-5 A3 BCD Switch PCA ... 7-6 A4 Oven Control PCA ... 7-7 A5 Power supply PCA ... 7-8

show more

Service and User Manual
Manual Type:
Service and User Manual
Pages:
126
Size:
1.46 Mbytes (1534685 Bytes)
Language:
english
Revision:
3
Manual-ID:
PN 869321
Date:
Quality:
Electronic document, no scan, very well readable.
Upload date:
29 November 2014
MD5:
96c7e0dc0a8e2b24df9d3509db4519bb
Downloads:
1154

Information

1 Introduction and Specifications ... 1-1 1-1. Introduction ... 1-3 1-2. Hardware Options ... 1-4 1-3. 734A-7001 Instrument Enclosure ... 1-4 1-4. 723B-7001 External Battery and Charger ... 1-4 1-5. Accessory Y734 Rack Mount Kit ... 1-4 1-6. Calibration Options ... 1-5 1-7. 732B-000 Special Calibration ... 1-5 1-8. 732B-100 Special Calibration and Drift Characterization ... 1-5 1-9. 732B-200 On-Site Calibration ... 1-5 1-10. Warranty Information ... 1-5 1-11. Service and Reshipment Information ... 1-6 1-12. Specifications ... 1-6 2 Installation ... 2-1 2-1. Introduction ... 2-3 2-2. Unpacking and Inspection ... 2-3 2-3. Selecting Line Voltage and Accessing the Fuse ... 2-4 2-4. Connecting to Line Power ... 2-5 2-5. Installing a 732B or 732B-7001 in a 734A-7001 Instrument Enclosure 2-5 3 Operation ... 3-1 3-1. Introduction ... 3-3 3-2. Summary of the Features ... 3-3 3-3. 732B DC Standard Front Panel ... 3-3 3-4. 732B DC Standard Rear Panel ... 3-3 3-5. 732B-7001 External Battery and Charger Front Panel ... 3-3 3-6. 732B-7001 External Battery and Charger Rear Panel ... 3-3 3-7. 734A-7001 Instrument Enclosure Front Panel ... 3-3 3-8. 734A-7001 Instrument Enclosure Rear Panel ... 3-3 3-9. Powering the Standard ... 3-11 3-10. Setting the BAT Switch ... 3-12 3-11. Charging the Internal Battery ... 3-12 3-12. Powering the Standard from a 732B-7001 ... 3-12 3-13. Replacing the Internal Battery ... 3-13 3-14. Connecting Cables to the Output ... 3-14 3-15. Connecting the GUARD and GROUND ... 3-15 3-16. Monitoring Oven Temperature ... 3-16 3-17. Resetting the IN CAL Indicator ... 3-16 3-18. Monitoring The IN CAL Indicator State Remotely ... 3-16 3-19. Monitoring Long-Term Stability ... 3-17 3-20. Minimizing Error Sources ... 3-18 3-21. Mechanically Induced Errors ... 3-18 3-22. Thermal EMFs ... 3-18 3-23. Output Cable Loading ... 3-18 4 Theory of Operation ... 4-1 4-1. Introduction ... 4-3 4-2. Overall Functional Description ... 4-3 4-3. Model 734A Functional Description ... 4-5 4-4. Model 732B-7001 External Battery/Power Supply ... 4-5 4-5. 732B Circuit Description ... 4-5 4-6. 10V Reference Circuit ... 4-5 4-7. Generating the 1.018V Output ... 4-7 4-8. Biasing the Refamp for Low Temperature Coefficient ... 4-7 4-9. Sense Current Cancellation ... 4-7 4-10. Buffering of the 10V Output ... 4-8 4-11. Oven Temperature Controller A4 ... 4-8 4-12. A1 Front Panel Assembly ... 4-8 4-13. Power Supplies and Battery Charger Assembly A5 ... 4-9 4-14. Overvoltage Protection Circuitry ... 4-9 4-15. Raw DC Power supply ... 4-11 4-16. Battery Charger ... 4-11 4-17. +11.5V Preregulator ... 4-11 4-18. +11.5V Low-Dropout Regulator ... 4-12 4-19. -6V Power supply ... 4-12 4-20. IN CAL Logic ... 4-12 4-21. LED Drive Logic ... 4-12 4-22. AC Power to Battery Power Switching Circuitry ... 4-13 4-23. Battery Circuit ... 4-13 4-24. Rear Panel Connections ... 4-13 4-25. Low-Battery Shutdown Circuitry ... 4-14 5 Maintenance ... 5-1 5-1. Introduction ... 5-3 5-2. Service Information ... 5-3 5-3. Replacing the Fuse ... 5-3 5-4. Cleaning the External Surfaces ... 5-3 5-5. Calibration ... 5-3 5-6. Preparing for Calibration ... 5-4 5-7. Preparing for 10V Calibration with Adjustment ... 5-4 5-8. Calibration with Adjustment ... 5-6 5-9. Calibration Without Adjustment ... 5-8 5-10. Access Procedures ... 5-9 5-11. Initial Access Procedure ... 5-9 5-12. Replacing the Battery ... 5-9 5-13. Replacing the Oven Assembly ... 5-13 5-14. Accessing the A5 Battery Charger ... 5-13 5-15. Removing the Power Transformer Assembly ... 5-13 5-16. Troubleshooting ... 5-14 5-17. 10V Reference Performance Test ... 5-14 5-18. Troubleshooting the A5 Battery Charger Assembly ... 5-14 5-19. Transformer/Rectifier/Filter ... 5-15 5-20. Battery Charger ... 5-15 5-21. +11.5V DC Preregulator ... 5-15 5-22. +11.5V DC Regulator ... 5-16 5-23. -6V DC Supply ... 5-16 5-24. IN CAL LED Logic ... 5-16 6 List of Replaceable Parts ... 6-1 6-1. Introduction ... 6-3 6-2. How to Obtain Parts ... 6-3 6-3. Manual Status Information ... 6-3 6-4. Newer Instruments ... 6-3 6-5. Service Centers ... 6-4 6-6. Parts ... 6-4 7 Schematic Diagrams ... 7-1 A1 Front Panel PCA ... 7-3 A2 Flex Circuit PCA ... 7-5 A3 BCD Switch PCA ... 7-6 A4 Oven Control PCA ... 7-7 A5 Power supply PCA ... 7-8 Index

show more

Add Comment

* Required information
1000
Captcha Image

Comments

No comments yet. Be the first!