Service Manuals, User Guides, Schematic Diagrams or docs for : Keithley 720 28233A(Model720)
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KEITHLEY INSTRUMENTS. INC.
MODEL 720
VARIABLE APERTURE.INTEGRATING
ANALOG TO DIGITAL CONVERTER
INSTRUCTION MANUAL
INSTRUCTION MANUAL
Model 720
Variable Aperture Integrating
Analog to Digital Converter
FIRST PRINTING, FEBRUARY 1976, CLEVELAND, OHIO, U.S.A.
DOCUMENT NO. 28233, REVISION CODE AA
li HI',`,, ,,,I:\' I NCi'l'ICllh, ,`:NT.s N I.7
TABLE OF CONTENTS ,
PAGE
I. TitlePage .................... . .... i
II. Ta,ble of Contents. ..................... ii
III. General Description. ................... .iii
Specifications. ..................... 1
IV. Operating 1,nstructions ................... 5
Front Panel Description ................. 9
Rear Panel Description. ................. 10
Rear Panel. ....................... 11
Control Setting Connector ...... '. ......... 12
Rear Panel Data Connector ................. 15
Rear Panel Control Setting Connector. .......... 16
,Timing Diagram
V. Interface Example. ..................... 17
Software Description. .................. 17
Hardware Description. .................. 18
Flow Chart., ..... ., ................. 19
Multiplexing Format ........... '. ........ 22
Cabling ...................... .'. . 23
VI. Circuit Description. .................... 25
Block Diagram ...................... 26
VII. Calibration Procedu,re. ................... 43
Component Layout Diagram. ................ 45a
VIII. Parts List and Schematics. ................. 46
Parts List for Schematic 27864, Sheet 1 ......... 48
Parts List for Schematic 27864E, Sheet 2. ........ 49
Parts List for Schematic 27864E, Sheet 3. ...... ; . 52
Schematic 27864E, Sheet 1 of 3
Schematic 27864E, Sheet,2 of 3
Schematic 27864E, Sheet 3 of 3
ii
c
I
Specifications 8-11-75
Model 720
Variabie Aperture Integrating A/D
P Calibrated
Warranted
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