Tektronix 7834

FULL SCAN
AUTO FOCUS
CURRENT
TO VOLTAGE
AMPLIFIER
02322
02332
02328
STORAGE CONTROL AND TRACE ALIGN
STORAGE DISPLAY
AUTO FOCUS
SCAN
SWITCH
02362, 02368
SWITCH
DRIVER
02344
02354
AUTO ASTIG
SCAN SWITCH
Q2422,02432
The Storage Control and Storage Display circuits comprise
the
Storage System . The Storage Control circuit develops
digital and analog signals for input to the Storage Display
circuit . The Storage Control circuit includes front-panel
switching and rear-panel connectors
for control of the
Storage System . The Storage Control also
includes circuits
to coordinate the operation of
the Readout System and
associated time-base unit(s)
with storage functions . The
Storage Display circuit decodes the signals that are generat-
ed by the Storage Control circuit and develops the wave-
forms that are applied to the crt storage electrodes .
REDUCED SCAN
AUTO FOCUS
FULL SCAN
AUTO ASTIG
COMPENSATION
EMITTER
FOLLOWER
02436
02405
Theory of Operation-7834
REDUCED SCAN
AUTO ASTIG
COMPENSATION
OUTPUT
AMPLIFIER
02372 Q2394
~-~--~-
02378, 023741
02384
Figure 3-46 . Detailed
block diagram of the Auto Focus Amplifier circuit .
1988-71
Figure 3-47 shows a detailed
block diagram of the Storage
System
. The schematic for the Storage Control and the
Storage Display circuits are on diagrams 18 and 19 respec-
tively, in the Diagrams
section
at
the rear of this manual .
Figures 3-48, 3-49, 3-50 and 3-51 show
the timing sequence
of signals
used throughout the Storage System in each of
the four storage modes (BISTABLE, VAR PERSIST, FAST
BISTABLE and FAST VAR PERSIST) .
The Trace Alignment circuit develops outputs to drive the
Trace Rotation and Y-Axis coils . The schematic for this
circuit is shown on diagram 18 .
3- 6 5
---- " - AUTO
AST I G
TO
CRT
CIRCUIT
_
AUTO
FOCUS