Contents
Theory
of
Operation
Overview .......... ' ......... ; ..•.. ::.: ....................................................................... 3-1
Logic Conventions·; .......................................................................... 3-1
Overview
of
the
Circuits ................................................................. 3-1
Main Board
(Al0)
.......................................................................
3-1
·
Power
Bo,ard
(All)
.....................................................................
3-2
Front
Board
(A12) ......................................................................
3-2
Daculator Piggy Back Board (A14) ........................................... 3-2
Processor
board
'{A15) .......•......•.•.•................•......•••...•.•.••••....•... 3-2
Serial Interface
Board
(A16) (Optional) ................................... 3-2
General Purpose Interface Bus (GPIB)
Board
(A17)
·(Optional) ........ ; ... :
.....
'..,'.································································· 3-2
Block Diagrain ...........•
'.
.... ; ........ ~································································ 3-3
· Vertical Amplifiers ......................................................................... 3-3
Trigger
and
Ho'rizont3', Amplifiers ................................................ 3-3
Digital Storage .....
:.·;'.:.:
.....................................................................
3-4
Front
Panel
and
System Control .................................................... 3-5
High
and
LowVoltag'e Power
Supply
............................................ 3-5
Z-axis ............................................................................................... 3-5
Vertical ; ........ ; .........
::.!.'..::
..
~·~':·
...
:.:
.................
.....................................
3-7
Vertical System ...............
~;
.. ;: .....................................................................
3-7
Pre-Amplifier·; ..................................................................................
3-7
Attenuator Circuit· ......................................................................
3-7
Storage Pick-off Amplifier
U102
.............................................
3-10
DC
Balance ...............................................................................
3-10
. .
Probe Coding .....
!.'.~
.......
:::~.}
......................................................
3-10
Delay Line Driver ..........................................................................
3-11
Vertical Output Amplifier
~
... i;:
....................................................
3-11
Vertical Position Logic ..................................................................
3-11
Vertical Switch Logic .................................................................... 3-12
Horizontal System
and
Z-Axis Circuit ...................................................
3-13
Trigger Circuit ........................... ., .................................................. 3-14
· Sweep Logic Circuit
;::
......
~.:.'::;
..
: ....................................................
3-14
Auto Cal
and
AUTO Setup ................................................
3-15
Timebase Generator ...................................................................... 3-15
Horizontal Magnifiers
and
Readout
MUX
...................................
3-16
Z-Axis Circuit ................................................................................ 3-16
Serial Data
Chain
...... : ...................................................................
3-18
Daculator Circuit;.'. ........
::
..............................................................
3-18
• • • • .
'.
j : f
!.
. 4
Digital Circuitry .......................
,'.
............................................................... 3-19
Microprocessor Circuit ..
~
.............................................................. 3-19
Display System .........
'..·
.
.:':;
..............................................................
3-22
,.
ii
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