Pentax EPK-P - Function Diagram

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Y/C
SCPDO
SCPDI
YCrCb
[
9..0
]
SCP RX
SCPTX
DB[15..0]
A[16..1]
CPU part
CPU
ROM
RAM
Keyboard I/F
RTC
A/D
R, G, B
[
9..0
]
Encoding part
Video encoder
Preprocess part
Patient circuit
(isolator)
Video decoder
Process part
FPGA
Video memory (SD-RAM)
YCrCb > R,G, B
Character generator
Calculation for Iris
Noise reduction
Enhancement
Freeze image
Pump D/A
Serial control
Scope connector
Photo
sensor
(PHC1)
Battery
CR17335SE
Integrated power supply unit
(PS1)
Front panel
board (F700)
Power
switch
(SW1)
Noise
filter
(LF2)
Rear fan
(FAN1)
Interlock
switch
(SW2)
BNC
(CN17)
BNC
(CN18)
Y/C
(CN19)
Y/C
(CN20)
RGB
(CN21)
Trigger 2
(CN22)
Keyboard
(CN24)
Trigger 1
(CN23)
Lamp 1
(LP1)
Lamp 2
(LP2)
Lamp selector
(SW3)
Motor
(MOT1)
Lamp rotary disk
Sensor board
(O700)
Lamp
ON-OFF
control
Iris control
12VDC
Err
o
r
detect
i
o
n
Calculated signal for iris
Pump control
Sco
p
e lock
Lamp control
Front panel signal-1
Front panel signal-2
Signal for LED indication
5V, +/-15VDC to
patient circuit
5, +/-15VDC from power
supply PS2
Fuse (FU1) L
Fuse (FU2) N
IA12V
IA33V
IA5V
Y
C
R
G
B
S
Process board (E700)
Trigger 1, 2
Keyboard
USB D+, D-, V
AC input
< EPK-p Type-C Function diagram >
Fig-1 Function diagram
P
ump
control
Iris motor
(MT1)
for Lam
p
s
for Patient circuit
for Secondar
y
circuit
12VDC to
secondary circuit
12VDC from
p
ower su
pp
l
y
PS2
Pump
(PM1)
Blower fan
(FAN2)
Unit fan
(FAN3)
12VDC
USB
(CN34)
I/O part
Video
amplifier
DC power supply part
DC/DC converter
>>3.3V
Three terminal regulator
>>5.0V
Peripheral control part
S/P converter
12VDC