Equipment information:

Fluke 343A Calibrator
Manufacturer:
Fluke
Model: 343A
Date: 1969
Category: Measurement instruments
Group: Calibrator
Description: DC Voltage Calibrators
Information:
                                    1-2. The Fluke Model 341Ä and Model 343A' DC Voltage
Calibrators 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.
1-3. 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.
1-4. 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.

These manuals are available for the above equipment:

Fluke -- 343A -- Service and User Manual
File name: Fluke-7709-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 98
Size: 8.48 Mbytes (8891485 Bytes)
Language: english
Revision:
Manual-ID/Number: 293951
Date: June 1969
Quality: Scanned document, all readable.
Upload date:
MD5: 4dccc19ab7885f56439b8480d49f98d3
ed2kID: e2bf69b9025c1b568c7e606414256aed
Downloads: 54 since 10 February 2016
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
Fluke-7709-Manual-Page-1-Picture
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