Ballantine 1620A User manual

INSTRUCTION MANUAL
For
MODEL 1620A
TRANSCONDUCTANCE AMPLIFIER
Ballantine Laboratories, Inc.
www.ballantinelabs.com
e-mail: [e-mail]
9 Saddle Rd., Cedar Knolls, New Jersey, 07927, USA
Phone: [phone], Fax: [phone]
90-10296-5CMARCH 2007

CERTIFICATION
Ballantine Laboratories, Inc. certifies that this equipment meets all applicable Ballantine specification at
time of shipment from the factory as determined by thorough testing and inspection. Ballantine further
certifies that its measurements are traceable to the United States National Institute of Standards and
Technology. All instruments used in calibrating Ballantine products are standardized by systematic reference
to NIST-traceable Standards äs described in the validation procedures shown below.
REFERENCE STANDARDS
DC 10 mV –750 V 0.002 –0.003%
20 Hz -50 kHz
0.5 V –500 V 0.004%
20Hz -10 MHz
0.5 V –100 V 0.05%
DC -30 MHz
0.5 V –100 V 0.35%
DC -700 MHz
10 uV –0.5 V 1% -NIST
10 MHz -1000 MHz
1 V –300 V 1% -NIST
WORKING STANDARDS
THERMAL VOLTAGE CONVERTERS, BALLANTINE 1397A
TRANSFER STANDARD, BALLANTINE 1605A
MICROPOTENTIOMETERS, BALLANTINE 440
RATIO TRANSFORMERS, GERTSCH
Ballantine's Quality Assurance program satisfies the requirements of MIL-l-45208.

Paragraph Page
SECTION 1
GENERAL INFORMATION
1-1. Introduction ................... 1-1
1-11. Specifications ................ 1-1
1-13. Accessories .................. 1-5
l-16. Options ..................... 1-5
1-18. Instrument and Manual Identification 1-5
SECTION 2
INSTALLATION
2-1. Introduction ............ 2-1
2-3. Unpacking and Initial Inspection . . 2-1
2-5. Performance Checks ......... 2-1
2-7. Power Requirements ......... 2-1
2-9. Grounding Requirements ....... 2-1
2-13. Installation and Mounting ..... 2-2
2-15. Bench Mounting ........... 2-2
2-17. Rack Mounting ........... 2-2
2-19. Short Term Storage ......... 2-2
2-21. Long Term Storage or Repackaging
For Shipment ........... 2-3
SECTION 3
OPERATING INSTRUCTIONS
3-1. Introduction ................. 3-1
3-3. Controls, Indicators, and
connectors .................... 3-1
3-5. Power Requirements ......... 3-4
3-6. Input Voltage ........... 3-5
3-14. Range Selection .......... 3-5
3-17.Output Current Connections ..... 3-6
3-20. Output Current and Load
Consideration ................ 3-6
3-22. Limit Indicators .......... 3-6
3-26. Standby - Operate ......... 3-6
3-28. Error Sources and Application
Limits ..................... 3-6
SECTION 4
PRINCIPLES OF OPERATION
4-1. General .............. 4-1
SECTION 5
MAINTENANCE AND CALIBRATION
5-1. Introduction .................. 5-1
5^4. Required Test Equipment ...... 5-1
5-6. Performance Verification Checks .... 5-1
5-8. Calibration Accuracy Verification .. 5-1
5-9. DC Calibration Check ............ 5-1
5-11. Zero Adjust ............ ....... 5-1
5-16. DC Current Checks ......... 5-1
5-21. AC Current Checks ......... 5-4
5-23. Checking Input Overvoltage ...... 5_4
Paragraph Page
SECTION 5
MAINTENANCE AND CALIBRATION - Cont'd
5-26. Checking Overcompliance Indicator.... 5-5
5-29. Checking Output Overcurrent Protection 5-5
5-30. Conclusion of Performance
Verification Checks ....... 5-5
5-32. Calibration and Alignment Procedure. . 5-6
5-34. Removal of Covers ......... ..... 5-6
5-36. Preliminary Inspection ....... .... 5-6
5-38. Internal Adjustments and Test Points . 5-6
5-42. Initial Power Supply Check ..... 5-6
5-43. DC Calibration ........... 5-6
5-44. Front Panel Zero Adj (R26) ..... 5-6
5-48. 200u Range Calibration (RJ8) .... 5-8
5-55. 2A Range Calibration (R52) ..... 5-8
5-60. 200m Range Calibration (R73) .... 5-8
5-65. High Accuracy DC (Option 04) .... 5-8
5-67. 20m Range Calibration (R71) .... 5-8
5-72. 2m Range Calibration (R72)..... 5-8
5-74. 100A Range Calibration (R55) .... 5-9
5-80. 20A Range Calibration (R51) .... 5-9
5-88. 20A Stability Adjustment (C14) ... 5-9
5-94. 100A Distortion Adjustment (R38) . . 5-9
5-104. AC Calibration ............... 5-10
5-111. Troubleshooting and Fault Finding . 5-10
5-115. Fuse Replacement ............. 5-10
5-117. Preventive Maintenance ....... 5-10
SECTION 6
PARTS LIST AND SCHEMATIC DIAGRAMS
SECTION 7
OPTIONS
7-1. Introduction ............ 7-1
7-2. Option 60 ............. 7-1
7-4. Specifications ........... 7-1
7-6. Operating Features ......... 7-1
7-8. Operating Notes .......... 7-2
7-9. Programming Instructions ...... 7-2
7-11. Instrument Control ......... 7-2
7-13. Clear ............... 7-2
7-15. Reset ............... 7-2
7-17. Local Lockout ........... 7-3
7-19. Output Control ........... 7-3
7-21. Output Current ........... 7-3
7-23. Operating Mode ........... 7-3
7-25. Status Response .......... 7-4
7-27. Serial Poll Response . . ...... 7-4
7-29. Pin Assignment For I/O Remote
Expansion . . .......... 7-5
7-30. Theory of Operation ........ 7-5
7-32. Listen Mode . ........... 7-5
7-35. Talk Mode ............. 7-5
7-38. Maintenance . . . . . . . ..... 7-5
7A-1. Option 30 ............... 7-11
TABLE OF CONTENTS

1-0
Figure 1-1. Model 1620A Transconductance Amplifier