NEXCOM VTC 7100-D1K - Manual (Page 90)

Copyright © 2012 NEXCOM International Co., Ltd. All Rights Reserved. 76
Appendix D: Signal Connection of DI/DO
VTC 71-D Series User Manual
Digital Output
CN18 connector for GPO signal (digital signal output)
The CN18 has 4 digital output channels. Each channel can accept 0~30Vdc
voltage. And it is able to drive 250mA current for low level. The signal
connection of CN18 support two connected methods for output signal type.
The output signal has two states, one is low level (driven to 0V from GPO
signal) other is open (high voltage is provided from external device).
G_OUT1
G_OUT2
G_OUT3
G_OUT4
VCC5
330E 0603 330E 0603
330E 0603 Z12003
Z12004
Z12005
Z12006
330E 0603
SW4
DIP SW 2X4
SW4
DIP SW 2X4
1
2
3
4
6
5
7
8
330E 0603 330E 0603
330E 0603 330E 0603
GPO (SW4)
On Pull up VCC5
Don’t Care Off
Wet Contact (default)
The SW4 needs to switch to “ON” state. The GPO signal will have a pull up
resistor to 5V internally when you switch “SW1” to “ON” state. The output
signal has two states, one is low level (driven to 0V from GPO signal ) other
is high level (driven to 5V from GPO signal).
The figure below shows how to connect an external input source to one of
the isolated output channel.
G_OUT1
G_OUT2
G_OUT3
G_OUT4
G_OUT4
G_OUT3
G_OUT2
G_OUT1
VCC5
GPO1
GPO0
GPO2
GPO3
330E 0603 330E 0603
330E 0603 330E 0603
EMB17A03G EMB17A03G
8
7
6
5
1
2
3
4
EMB17A03G EMB17A03G
8
7
6
5
1
2
3
4
330E 0603 330E 0603
330E 0603 330E 0603