Hitachi RAC-25NH5 - Bigflow Technical Description

– 72 –
Outdoor HIC
29
Pin
30
Pin
Indoor microcomputer
DC 35V line
49
Pin
50
Pin
100ms.
Leader
33ms.
1 frame
0.7V
0V
5V
0V
5V
0V
5V
0V
35V
Indoor microcomputer
4.95ms.
Transmit / receive
switching time
33ms.
1 frame
Outdoor HIC
30
Pin
0V
29
Pin
5V
0V
50
Pin
5V
0V
49
Pin
5V
0V
DC 35V line
35V
Fig. 2-2 Voltages Waveforms of indoor / Outdoor Microcomputers (Outdoor to Indoor Communications)
Fig. 2-3 Voltages Waveforms of indoor / Outdoor Microcomputers (Indoor to Outdoor Communications)