Voltages Waveforms Of Indoor / Outdoor Micro Computers - Hitachi RAS-25CNH1 Service Manual

$
Outdoor HIC
%
Indoor micro computer
(
35V DC line
Fig. 2-2 Voltages Waveforms of indoor / Outdoor Micro computers (Outdoor to Indoor Communications)
$
Outdoor HIC
%
Indoor micro computer
6 4
(
35V DC line
Fig. 2-3 Voltages Waveforms of indoor / Outdoor Micro computers (Indoor to Outdoor Communications)
Pin
Pin
Pin
Pin
1
1
100 ms.
Leader
Pin
Pin
Pin
Pin
1
1
4.95ms.
Transmit / receive
switching time
33ms.
1frame
33ms
1frame
– 66 –
5V
0V
5V
0V
5V
0V
5V
0V
35V
5V
0V
5V
0V
5V
0V
5V
0V
35V