Hioki 8841 - System Operation

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18.11 System Operation
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Memory control circuit
Input unit
Logic input
（
Total 4 probes
）
Stored
RAM
(8 M
words)
LCD
Pre
am
p
lifier
A
/D
Photo
cou
p
ler
Pre
am
p
lifier
A
/D
Photo
cou
p
le
r
CH 1
CH 2
Pre
am
p
lifier
A
/D
Photo
cou
p
ler
Pre
am
p
lifier
A
/D
Photo
cou
p
ler
CH 15
CH 16
Logic probe
9608
Memory
bord
(24 M
words)
32 bits
CPU
FD
9607
MO UNIT
(Option)
Controls
SCSI
Printer
PC card
GP-IB
CARD
RS-232C
CARD
PRINTER
CARD
LOGIC(CH)
A
LOGIC(CH)
D
(Option)
(Option)
Logic probe
Block Diagram
18.11 System Operation
System operation is explained according to the block diagram.
・All system operations are controlled by a 32-bit RISC CPU.
・The input unit incorporates high-speed 12-bit A/D converters which are
connected to the main unit via a photocoupler integrated in each input unit.
Each channel has its own power supply, to assure electrical isolation from
the main unit.
・Measurement data stored in memory are processed by the CPU, displayed on
the LCD screen, and output to the printer. Output to floppy disk, MO disk,
PC card or SCSI is also provided.