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-------
rH
yy
Sv
Sv
'
5v
R802
:
reas
ee
IF transmit
output (SDO)
th
1 0 |
ov
low
J
site
T y5v
computer
-—_ al
UP 1C801
IF receive
input (SDI)
OV»
OV
ee
SE
—<—————
Terminal board
| indoor P.w.8.
door
| indoor P.w.8.
W.B.
H Terminal board
EEE
ee
om
EE
IF transmit
output (SDO)
Ov
C709
sibs
{
ov
tov
c710
NF COIs
ov
Ove.
I/F OV
r
OV
=
eee
ome
=
aE
(Communications from indoor micro computer to outdoor micro
computer)
(Communications from outdoor micro computer to indoor micro
computer)
Fig. 2-1 Indoor/outdoor interface Circuit
—112—
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