Equipment information

Boonton Electronic 7200 Level Meter
Manufacturer
Boonton Electronic
Model 7200
Date 1996
Category Measurement instruments
Group Level Meter
Description CAPACITANCE METER
Information
                                    The Model 7200 is a microprocessor-based capadtancc meter
which provides fully automatic, 1 MHz capacitance and loss
measurements. Its operating capacitance range is 0 to 2000
pF, and its conductance range is 0 to 2000 pS. The following
features make the Model 7200 suitable for a wide variety of
applications.
a. Versatile Displays. The Model 7200 measures the parallel
capacitance and conductance of the device under test From
these measured parameters» it can calculate and display the
equivalent series and parallel resistance, series
capacitance, dissipation factor, and quality factor.
Capacitance can also be displayed as a deviation from a
programmable reference value in % or pF units.
b. Accuracy. The base accuracy of Model 7200 for capacitance
measurements is 025 % of reading -t- 02 % of full scale +
0.005 pF, and the basic accuracy for conductance
measurements is US % of reading +- 2j0 % of full scale +
0.05 fiS + 2(coC)2, where C is the parallel capacitance in
Farads.
c. Programmable Bias and Test Level. The Model 7200 utilizes
a 1 MHz test signal with programmable levels of15,30,50, or
100 millivolts. It accepts, measures, and displays external
DC bias voltages over a range of ± 200 volts. An internal
bias Power supply is programmable over a ± 100 volt range.
Bias voltages of either polarity can be applied to the HI
test terminals. This bias capability with fast responding C,
G, and V outputs makes the instrument ideal far C-V or G-V
semiconductor plots, as well as DLTS material studies.
d. Wide Zeroing Range. The Model 7200 can zero stray
capacitances of up to2000pF automatically with a single
keystroke. As a result of this wide zeroing capability, the
range of the instrument can be effectively increased to 4000
pF by first zeroing the instrument with a 2000 pF specimen
connected to the input terminals.
e. Ease of Operation. Human engineering con-
sidérations have been emphasized in both the mechanical and
electrical design of Model 7200. Measurement modes, test
signal levels, bias voltages, and reference capacitance and
conductance values are easily programmable with front- panel
keystrokes. Ranging and measurement are fully automatic.
Measured values and settings are displayed on a 20-character
vacuum-fluorescent display with of measurement to minimize
the possibility of misinterpretation. LEDs indicate active keys.
f. Panel Setup Storage and Recall. The Model 7200 can store
up to 99 complete panel setups in nonvolatile memory. Each
stored setup can be recalled by entering the stored program
number either locally or through the GPEB bus. This feature
is especially useful when a series of often- repeated test
sequences needs to be performed.
g. IEEE-488 Interface. The Model 7200 uses a microprocessor
with a fixed internal program for automatic control of all
measurement, computation, and display functions. The use of
a microprocessor facilitates interfacing with ATE systems.
The Model 7200 is equipped with a full-function IEEE-488 bus
interface. All front panel control functions, with the
exception of the PLOT and LCL/INIT key functions, are
remotely programmable. For rapid data transfer, C, G, and V
information is available simultaneously.
h. Analog Outputs. Analog voltages proportional to measured
values of capacitance, conductance, and bias are
continuously available at rear panel connectors for
application to an analog plotter.
i. Remote Measurements. Because of its tolerance of loading
capacitances, the Model7200 is particularly useful for
measurements at a point remote from the front panel test
terminals, such as in environmental chambers, in areas of
harmful radiation, or in component handlers for production
testing.
j. Special Functions. A variety of special functions are
provided to extend the operational capabilities of Model
7200 to meet specific requirements. The instrument can be
configured to hold a particular measurement range when
parameters of test specimens fall within a known range.
Measurement limits can be programmed, and the instrument
will indicate if the measurements for the test specimen are
above or below these limits. 

These manuals are available for the above equipment:

Manual Type Service and User Manual Boonton-8492-Manual-Page-1-Picture
Pages 100
Size 6.13 Mbytes (6428766 Bytes)
Language english
Revision
Manual-ID/Number 983026000
Date 01 January 1996
Quality Scanned document, all readable.
Upload date
MD5 e9603487d17c90871dfa86bcd633871b
Downloads 217 since 23 January 2017
Information
SECTION I - GENERAL INFORMATION
1-1.
INTRODUCTION ... 1-1
1-3. DESCRIPTION. .
 ... 1-1
1-5.
ACCESSORIES ... 1-2
1-7.
OPTIONS ... 1-2
1-9.
SPECIFICATIONS ... 1-2
SECTION n - INSTALLATION
2-1.
INTRODUCTION ... 2-1
2-3.
UNPACKING ... 2-1
2-5.
MOUNTING ... 2-1
2-7. POWER
REQUIREMENTS ... 2-1
2-10. FRONT PANEL
CONNECTIONS ... 2-1
2-11. Test Terminals.
 ... 2-1
2-12. Differential
Terminals ... 2-1
2-13. REAR PANEL
CONNECTIONS ... 2-1
2-14. External
Bias ... 2-1
2-15. IEEE-488 Bus
Interface ... 2-1
2-16. Analog
Outputs ... 2-2
2-17. PRELIMINARY CHECK.
 ... 2-2
SECTION m - OPERATION
3-1.
INTRODUCTION ... 3-1
3-3. CONTROLS, INDICATORS, AND
CONNECTORS ... 3-1
3-6. Instrument Displays and
Indicators ... 3-1
3-9. Measurement Function
Keys ... 3-1
3-10. LOSS Function
Keys ... 3-2
3-11. CAPACITANCE Function
Keys ... 3-2
3-12. 235ROKey.
 ... 
3-13. BIAS Function
Keys ... 3-4
3-14. BIAS ON, INT And EXT
Keys ... 3-4
3-15. SETUP Key.
 ... 3-4
3-17. SWEEP
Key ... 3-4
3-18. PLOT
Key ... 
3-19. Miscellaneous Function
Keys ... 3-4
3-20. SPCL
Key ... 3-4
3-21. PRGM, STORE And RECALL
Keys ... 3-5
3-22. LCUINIT
Key ... 3-6
3-23. SHIFT/SCROLL
Key ... 3-6
3-24. DATA ENTRY
Keypad ... 3-7
3-25. The CLR
Key ... *3-7
3-26. Front Panel
Connectors ... 3-8
3-27. Rear Panel
Connectors ... 3*8
3-32. LOCAL
OPERATION ... 3-10
3-33. Applying AC
Power ... 3-10
3-34. Selecting Measurement
Modes ... 3-10
3-36. Zeroing the
Instrument ... 3-11
3-37. Extending Instrument Measurement
Range ... 3-11
3-38. Applying External
Bias ... 3-11
3-39. Applying Pulse
Bias ... 3-11
3-40. Applying Internal
Bias ... 3*13
3-41. Remote Measurements And Cable
Effects ... 3-13
3-44. Programming Special
Functions ... 3-13
3-45. Selecting Test
LeveL ... 3-13
3-46. Selecting Capacitance
Standard ... 
• - 3*14
3-47. Selecting Conductance Standard.
 ... 
3-14
3-48. Selecting Capacitance High and Low Limits.
 ... 3-15
3-49. Selecting IEEE-488 Bus
Address ... 3-15
3-50. Selecting End-of-string
Character ... 3-15
3-51. Selecting Capacitance Uncertainty
Display ... 3-15
3-52. Selecting Conductance Uncertainty
Display ... 3-15
3-53. Selecting Measurement
Ranges ... 3-16
3-54. Selecting Internal Bias
Ranges ... 3-16
3-55. Selecting Measurement Filter
Lengths ... 3-16
3-56. Selecting SRQ Interrupt
Modes ... 3-16
3-57. Selecting Automatic Calibration
Modes ... 3-17
3-58. Selecting Temperature Display Modes.
 ... 3-17
3-59. Selecting Memory Initialization
Functions ... 3-17
3-60. Store And Recall Program
Operation ... 3-17
3*61. Using The SETUP
Mode ... 3-17
3-64. Setting The Option/Test
Switch ... 3-19
3-65. Error Messages.
 ... 3-20
3-66. IEEE-488 BUS
OPERATION ... 3-20
3-67. General.
 ... 3-20
3-68. Entering Remote
Mode ... 3-20
3-69. Returning To Local
Mode ... 3-20
3-70. Talk
Operation ... 3-20
3-71. Program Function
Mnemonics ... 3-22
3-72. Triggered
Operation ... 3-22
3-73. Using Service
Request ... 3-22
3-74. Bus Command
Responses ... 3-22
3-75. Number formatting.
 ... 3-22
3-76. Data String Syntax.
 ... 3-23
3-77. Selecting Menu Modes Using The
Bus ... 3-23
3-78. Data String Examples.
 ... 3-23
SECTION IV - THEORY OF OPERATION
4-1. General
Description ... 4-1
4-3. Detailed
Description ... 4-2
4-4. 1 MHz Oscillator
Circuitry ... 4-2
4-5. Front Panel Test
Terminals ... 4-2
4-7. Input Ranging Circuitry.
 ... 4-2
4-8. Input Amplifier
Circuitry ... 4-2
4-10. Phase Sensitive Detection Circuitry.
 ... 4-2
4-12. Measurement Zeroing
Circuitry ... 4-3
4-14. D.C. Bias
Circuitry ... 4-3
4-15. Digital Control
Circuitry ... 4-4
4-27. Measurement
Averaging ... 4-4
4-28. Internal Temperature Measurement Circuitry.
 ... 4-5
4-29. Front Panel Keyboard Circuitry.
 ... 4-5
4-30. Front Panel Display Circuitry.
 ... 4-5
4-31. Power supply Circuitry.
 ... 4-5
4-32. Rear Panel Analog Output
Circuitry ... 4-5
SECTION V - MAINTENANCE
5-L.INTRODUCTION ... 5-1
5-3. Required
Equipment ... 5-1
5-4. Cleaning
Procedure ... 5-1
5-5. Removal of
Covers ... 5-1
5-6. Visual
Checks ... 5-1
5-7. Component Removal.
 ... 
. 5-1
5-8. Removal and Replacement of EPROMs.
 ... 
. 5-1
5-9. PERFORMANCE
VERIFICATION ... 5-3
5-11. Temperature Influence.
 ... 5-3
5-15. Test Level Functional Check.
 ... 5-4
5-16. Capacitance and Conductance Test
Limits ... 5-5
5-17. Capacitance (Cp) Performance
Test ... 5-5
5-19. Conductance (G) Performance
Test ... 5-5
5-21. Analog Output linearity Performance Test
 ... 5-6
5-23. Capacitance Analog Output Linearity
Test ... 5-6
5-24. Conductance Analog Output Lincatity Test.
 ... 5-7
5-25. Internal Bias Performance
Test ... 5-7
5-27. External Bias Performance
Test ... 5-7
5-29. Input Loading Performance
Test ... 5-8
5-3L Software
CALIBRATION ... 5-12
5-34. External Bias Calibration. .
 ... 5-12
5-35. Internal Bias
Calibration ... 5-12
5-36. Detector Offset
Calibration ... 5-13
5-37. Capacitance Full-Scale Calibration.
 ... 5-13
5-39.
ADJUSTMENTS ... 5-14
5-42. Calibration Memory
Initialization ... 5-14
5-44. Amplifier Board adjustments.
 ... 5-15
5-45. 2 pF Range Loading Adjustment, A5A3L2.
 ... 5-15
5-46. 20 pF Range Loading Adjustment, A5A3L4.
 ... 5-15
5-47. 200 pF Range Loading Adjustment,
A5A3L5 ... 5-16
5-48. Phase Detector Board
Adjustments ... 5-16
5-49. Nominal Phase Adjustment,
A5A2R26 ... 5-16
5-50. Capacitance Full-scale Adjustment,
A5A2R33 ... 5-16
5-51. Minor Phase Adjustment,
A5A2R45 ... 5-17
5-52. Conductance Full-scale Adjustment,
A5A2R30 ... 5-17
5-54.
TROUBLESHOOTING ... 5-17
5-58. Trouble I
vocalization ... 5-18
5-59. Self Diagnostic
Routines ... 5-18
5-60. Lamp
Test ... 5-18
5-61. Keyboard
Test ... 5-18
5-62.
DACTcst ... 5-18
5-63. Detector Linearity
Test ... 5-18
SECTION VI - PARTS LIST
6-L
INTRODUCTION ... 6-1
SECTION vn - SCHEMATIC DIAGRAMS
Figure 7-L Frame Schematic,
A1 ... 7-3
Figure 7-2. Display Board, A2A1, Assembly
Diagram ... 7-4
Figtpe 7-3. Display Board Schematic,
A2A1 ... 7-5
Figure 7-4. Keyboard, A2A2, Assembly
Diagram ... 7-6
Figure 7-5. Keyboard Schematic,
A2A2 ... 7-7
Figure 7-6. Control Board, A3, Assembly
Diagram ... 
 ... 7-8
Figure 7-7. Control Board Schematic, A3, Sheet
1 ... 7-9
Figure 7-8. Control Board Schematic, A3, Sheet 2.
 ... 7-11
Figure 7-9. Control Board Schematic, A3, Sheet 3.
 ... 7-13
Figure 7-10. Mother Board, A4, Assembly
Diagram ... 7-14
Figure 7-11. Mother Board Schismatic,
A4 ... 7-15
Figure 7-12. H. V. Supply Board, A4A1, Assembly
Diagram ... 7-16
Figure 7-13. H. V. Supply Board Schematic,
A4A1 ... 7-17
Figure 7-14. Oscillator Board, A5A1, Assembly
Diagram ... 7-18
Figure 7-15. Oscillator Board Schematic,
A5A1 ... 7-19
Figure 7-16. Detector Board, A5A2, Assembly
Diagram ... 7-20
Figure 7-17. Detector Board Schematic,
A5A2 ... 7-21
Figure 7-18. Amplifier Board, A5A3, Assembly
Diagram ... 7-22
Figure 7-19. Amplifier Board Schematic,
A5A3 ... 7-23
Boonton-8492-Manual-Page-1-Picture


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