Hitachi RAS-18YH4 - Page 46

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