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Outdoor microcomputer Pin !1
Pin ^8
Indoor microcomputer Pin %0
Pin $9
35V DC line
Fig. 3-2 Voltages Waveforms of Indoor / Outdoor Microcomputers (Outdoor to Indoor Communications)
Outdoor microcomputer Pin !1
Pin ^8
Indoor microcomputer Pin %0
Pin $9
35V DC line
Fig. 3-3 Voltages Waveforms of Indoor / Outdoor Microcomputers (Indoor to Outdoor Communications)
100ms.
Leader
4.95ms.
Transmit/receive
switching time
– 49 –
33ms.
1 frame
33ms.
1 frame
5V
0V
5V
0V
5V
0V
5V
0V
35V
0V
5V
0V
5V
0V
5V
0V
35V
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