Tektronix 494A Water Dispenser User Manual


 
494A/494AP
Servlce
Vot.
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LIST
OF
ILLUSTRATIONS
(Cont.)
Page
Figure
Figure
7-12
Selection of
disptay
position
on
the
log
scale.
.....7-94
7-13
Functional
diagram
showing
the
sp€ctrum
analyzer
and
1405
TV
Sideband Adapter
system.
........
7€6
7-14
Simplified
diagram
of
video filter.
.............
Z-39
7-15
Vertical
control
lC
bfock diagram.
..............
.............241
7-16
Horizontalcontrol
lc
bfock diagram.
..............
.............145
7-17
Block diagram
of
crt
readout.
.............7-52
7-18
Character on/off
timing
...............
7-53
7-1
I
Character scan.
.,........
...............
7-54
7-20
Charactergenerator
block diagram.
...............
............ 7-5S
7-21
Character
timing
diagram.
......... 7-56
7-22
Frequency
dot
marker
simplified
diagram
with
timing
waveforms.
...................
7-Sg
Page
7-23
Simplified
digital-to-analog
converter.
....-........
7-66
7-24
Simplified span
decade attanuator.
.............. 7-67
7-25 DAC variance
graph.
................7-73
7-26
Simpfffied
tune
voltage converter.
................ 7-74
7-27
Simplified
schematic
of harmonic
mixer.
...... 7-79
7-28 Block
diagram of a
basic synthesizer.
.........
7-80
7-29
Basic
block
diagram
of a
-rN
synthesizer
with a variable
modulus
prescaler.
...............
7-80
System memory map. ..........
.... 7-89
l/O address
spac€. ...................7-90
PIA
and
Timer address map.
.... 7,91
Options switch
bank
on
the Memory
board. ..............
7-95
Primary regulator
7€0
7-31
7-32
7€3
7-34
input/output
waveforms.
...........
7-104
7-35
Timing waveforms for soft-start
circuit.
.......
7-105
8-1
Int€rnational
Power
cord options.
................
8-1
xil