Unipulse F340A - 13-3. F340 A Block Diagram

13.SELF-CHECK FUNCTION AND INITIALIZATION
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13-3. F340A Block Diagram
＋ EXC
－ EXC
＋ SIG
－ SIG
Low-pass Fillter
× 100
Excitation
Referrence
A/D
Buffer
F.G
FRAME
Serial
Port
Parallel
Port
Port
Port
Serial
Port
RAM
4Kbyte
MPU 16bit
Flash
ROM
128K
Watch
Dog
NOV.RAM
1024bit
Display
Key Input
HOLD DZ
2Line 2Line
Parallel
SI/F
D/A
RS-232C
BCD
HI LO SIF
CPU
+12V +12V -12V +5V
VOL OUT
GND
+5V
VCC
Isolation
SI/F 用
FRAME
Power Supply Unit
LED
Conversion
Vo l t a g e
Input
Output
Voltage
L
N
AC IN
F.G