Fluke - 341A - Calibrator
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Fluke 341A
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Equipment:
341A
Date:
1969
Category:
Group:
Sub Group:
DC Voltage Calibrator
Information
The Fluke Model 341Ä and Model 343A' DC Voltage Calibrator provide dc voltages of 0 to 1100 volts in three
ranges. Voltages are selected by eleven-position decade
switches, which provide in-line, digital readout of the
instrument output voltage. The Model 341A employs six-dial
readout» with 1 ppm resolution, and the Model 343A employs
seven-dial readout, with 0.1 ppm resolution.
A controlled current limiter, a fixed current limiter,
and an electronic crowbar circuit provide protection against
instrument malfunction and operator error. Output current or
voltage, depending on function desired, are continuously
monitored by a front panel meter.
The instruments are designed for rack-mount
installation, using the mounting brackets supplied, and are
equipped with resilient feet and tilt-down bail for field or
bench use.
2 Manuals
Service and user manual
Manual type:
Service and user manual
Pages:
98
Size:
8.5 MB
Language:
english
Revision:
Manual-ID:
293951
Date:
Quality:
Scanned document, all readable.
Upload date:
Feb. 10, 2016
MD5:
4dccc19a-b788-5f56-439b-8480d49f98d3
Downloads:
2103
Information
I INTRODUCTION AND
SPECIFICATIONS...
1-1
1-1. introduction
...
1-1
1-5. Electrical
Specifications...
1-1
1-6. Environmental
Specifications...
1-2
1-7. Mechanical Specifications
...
1-3
1-8. General
Specifications...
1-3
II OPERATING
INSTRUCTIONS...
2-1
2-1. Introduction
...
2-1
2-4. Operating Features. .
...
2-1
2-6. Controls, Terminals and Indicators
... 2-1
2-8. Input Power Requirements
... 2-1
2-10. Preliminary Operation
...
2-1
2-12, AC Line
Connections...
2-1
2-14. Sense
Connections...
2-1
2-18. Current Limit
Operation...
2-5
2-20. Overload
Protection...
2-5
2-23. Mechanical Zero
Adjustment...
2-5
2-25.. Operation as a Voltage Calibrator 2-5
2-27. Applications
...
2-6
2-29. Operation as a Differential
Voltmeter... 2-6
2-31. Operation as a 10 ppm
Source... 2-6
III THEORY OF
OPERATION...
3-1
3-1.
Introduction...
3-1
3-3. Block Diagram
Analysis...
3-1
3-12. Circuit
Analysis...
3-3
3-13. +15 Volt Reference and Auxiliary
Supplies... 3-3
3-16. Chopper-Stabilized Amplifier 3-3
3-20. Series
Regulator...
3-3
3-23. Controlled Current
Limiter...
3-4
3-27. Negative Voltage
Limiter...
3-4
3-29. Sink Supply and
Crowbar...
3-4
3-34. Control
Circuit...
3-5
3-38. High Voltage Power
Supply... 3-6
3-40. Meter
Circuit...
3-6
3-42. Beta
String...
3-6
IV MAINTENANCE
...4-1
4-i. Introduction ...
...4-i
4-3. Service information
...4-1
4-6. Test Equipment.
...4-1
4-8. General Maintenance
...4-1
4-9, Maintenance
Access...
. 4-1
4-13. Adjustment Locations
...4-3
4-15.
Cleaning...4-4
4“!S. 1 15/230 Volt
Conversion...4-5
4-20. Fuse Replacement ...
...4-5
4-22. Lamp Replacement.
...
. 4-5
4-24. Performance
Tests...-
4-6
4-26. Line Regulation.
...4-6
4-28. Load
Regulation...4-6
4-30, Ripple
...4-7
4-32. Output Voltage
Accuracy...4-8
4-36. Troubleshooting
...4-8
4-39. Test Point Resistance
Check...4-8
4-41. Standby
Test...4-8
4-43. Auxiliary Supply
Voltages...4-9
4-45. Power-On
Test...440
4-47. Chopper Amplifier 4-11
4-49. Series Regulator
...4-11
4-51. Controlled Current Limiter
...4-12
4-53.
Crowbar...4-12
4-55. High Voltage Power Supply 4-12
4-57. Beta String
...
. 4-13
4-59. Pane! Meter
...4-13
4-61. Model 341A Calibration
...4-14
4-63. Preliminary Operations... 4-14
4-64. Reference Voltage Adjustment.
...4-14
4-65. Zero Output Adjustments
...4-14
4-66. Beta String Linearity Adjustments ... 4-14
4-67. Range Adjustments .
...4-14
4-68. Calibration Verification
...4-15
4-70. Model 343A Preliminary
Calibration...4-15
4-72. Preliminary Operations
...'4-15
4-73. Reference Voltage Adjustment
... : 4-16
4-74. Zero Output
Adjustments...4-16
4-75. Beta String Linearity
Adjustments...4-16
4-76, Temperature
Stabilization...4-17
4-77. Model 343A Final Calibration
...4-17
4-79. Zero Output
Adjustments...4-17
4-80. Beta String Linearity
Adjustments...4-17
4-83. Range
Adjustments...4-19
4-84, Calibration Verifications
...4-20
V LIST OF REPLACEABLE PARTS
...5-1
5-1. Introduction
...
. 5-1
5-3. Column
Description...5-1.
5-5. How To Obtain Parts
...5-2
5-8. List of Abbreviations
...5-2
5-9. Serial Number Effectivity
...5-45
7 GENERAL
INFORMATION...
· ?-l
8 SCHEMATIC
DIAGRAMS...8-1
Service and user manual
Manual type:
Service and user manual
Pages:
100
Size:
4.2 MB
Language:
english
Revision:
Manual-ID:
Date:
April 1973
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
Jan. 9, 2025
MD5:
f8be6e55-5d8e-0ad2-34cf-e4afc0c57c04
Downloads:
113