Voltages Waveforms Of Indoor; Outdoor Micro Computers - Hitachi RAM-130QH5 Service Manual

Base of outdoor P.W.B Q801, Q802 , Q803
Outdoor micro computer
lndoor micro computer SDO Pin
Fig. 2-2 Voltages Waveforms of indoor / Outdoor Micro computers (Outdoor to Indoor Communications)
Base of outdoor P.W.B Q801, Q802
Outdoor micro computer
lndoor micro computer SDO Pin
35V DC line
Fig. 2-3 Voltages Waveforms of indoor / Outdoor Micro computers (Indoor to Outdoor Communications)
Pin
9
Pin
73
Pin
74
SDI Pin
35V DC line
Pin
68
Pin
69
Pin
11
SDI Pin
100ms.
Leader
5-7.5ms.
Transmit/receive
switching time
– 61 –
33ms.
1 frame
33ms.
1 frame
0.7V
0V
5V
0V
5V
0V
5V
0V
35V
0V
5V
0V
5V
0V
5V
0V
35V