Physio Control LIFEPAK 9 - Page 47

Description 1
(FLYBACK) G4
VIDEO 1 ——&
VIDEO
VIDEO
CATHODE
SIGNAL
AMPLIFIER
VIDEO 2 — 려
Figure 1-11 Display PCB/CRT Assembly Block Diagram
上 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一
| MONITOR PCB
m| FRAME = HORIZONTAL ASSEMBLY
| FRAME SWEEP 2 DEFLECTION
| GENERATOR $ YOKE
|
|
| RASTER RASTER è VERTICAL
RASTER 一 一 | __ SCAN 1 GENERATOR つ DEFLECTION
| OSCILLATOR 2 YOKE
|
|
| RASTER CRT r 3
>| VOLTAGE E
| a
|
|
|
|
|
Two separate circuits provide horizontal and vertical CRT beam deflection.
The CRT raster consists of 768 scan lines in one complete frame with 256
pixels per line. The CRT screen is scanned by a vertical raster, bottom to top
and left to right (see Figure 1-12). There is no interlacing during the raster
BM i} n
|
VERTICAL SCAN | | | | | 기 |
A | |
WTA III
DEN
|
VÍ
HORIZONTAL
RETRACE
—
|
1
|
|
PŮ
Figure 1-12 Display Scanning
VERTICAL RETRACE |
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August
1993
Physio—Control
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