GE Datex-Ohmeda Aisys Carestation Reference Manual page 460

Inflow Pressure
Manifold Temp
Sensor Board
Sensor Board
+12VFILT
Press
Snsr#1
AGND
Detect,
Tmp1
+12VFilt Temp
Gain, &
Snsr#1
+5V
Offset
AGND
DGND
+5V
Constant Detect,
DGND Current Gain, &
Source Offset
Volt
Ref
Press
Snsr#2
Detect,
Tmp2
Temp
Gain, &
Snsr#2
Offset
I2C Bus
Config
EEPROM
ADB
ADB
Inflow Pressure
Sensor Board
Sh 1
Clock
RS232
RS232
Xmt/
Rcv
RS422
RS422
Xmt/
Rcv
JTAG
ISP
ICE
Manifold
I2C Bus
Cassette
I2C Bus
Config
EEPROM
Error
EEPROM
Agent Delivery Board
Outflow Pressure
Sensor Board
+12VFILT
Press
Snsr#1
AGND
+12VFilt
+5V
AGND
DGND
+5V
Constant Detect,
FlowDP
FlowDP
Current Gain, & DGND
Source Offset
Press
Snsr#2
I2C Bus
Config Error
I2C Bus
EEPROM EEPROM
ADB ADB
Outflow Pressure Cassette Temp
Sensor Board Sensor Board
Binary Binary Hall
VALVE_EN
Drivers Drivers Effect
(DC) (PWM) Sensors
AUXREF +5V
Voltage
DIP
Monitor 7-Seg
Switches Displays
VALVE_EN DITHER
PwrUp/
Reset/
Wdog
PROPVLVDRV
Proportional
DAC Filter Driver
VLVFDBCK
(DC)
Microcontroller
FLWMTRTMP1
2_5VREF FLWMTRTMP2
CASSTMP1
CASSTMP2
OUTFLOWDP
Receive,
OUTAGNDSENSE
10
Scale, & INFLOWDP
VALVE_EN
ADC
Filter INAGNDSENSE
AGLVL
Analog
CASSAP
Mux
+12VP1FILT
+5VA
I2C Bus
SPI Bus
VLVFDBCK
Aux
Volt
Ref
3
I2C
Signal
AUXREF
Mux
On-Board
Port0 Dither
I2C Bus
Constant
2_5VREF BRIDGE_PWR
Voltage
Source
Misc
Logic Control
CPLD
BRIDGE_HI
Receive,
CASSAP
Gain, &
BRIDGE_LO
Offset
JTAG
ISP
Aisys
Cassette Temp
Cassette Interface Board
Sensor Board
Detect,
Tmp1
Temp
P4
Gain, &
Snsr#1
Offset
+12VP4 +12VCass
Bidir
T-Filter
TVS
Volt
Ref
AgLvl/SDA Bidir
T-Filter
TVS
Detect,
Tmp2
Temp
Gain, &
Snsr#2
Offset
SCL Bidir
T-Filter
TVS
Config
EEPROM
ADB
Aladin
LED Control
LED
Driver
Pwr Up
Circuit
Osc
Reset
x5
5
Sensor Comparator
FPGA
Trip
Point
5
Test
POS Excite &
Condition
Analog
ADC
Mux
NEG Excite &
Condition
Figure 11-7 • System block diagram (sheet 3 of 3)
11-8
Cassette
2
+2.5V Linear
Regulator
+5V Linear In-rush ESD +12VCass
Regulator Limitter TVS
SCL
ESD
TVS
Level
Analog ESD AGLVL/SDA
Signal
Switch TVS
Circuit
Switch Control
LED Control
Schmitt
Trigger
I2C Bus Analog
Switch
Error Config
EEPROM EEPROM
Agent Cassette Board
04/08 M1046983