Valeport 803, Operating Manual

Page: 17 / 25

Valeport Ltd © 2019
Appendix 1 - Electrical Connections
Page 17
7. Appendix 1 - Electrical Connections
7.1. RS232 Communications Lead
SubConn Cable
Analogue Signal
(Sockets in cable box)
Power In
(Banana Pins
RS232
9 way D type
Pin Function Pin Colour Pin Pin
1
+ve Supply Brown /
Red Red plug
2 Analogue X X
3 Analogue Ground X & Y
4
0v supply Blue /
Black Black
Plug
5 Analogue Y Y
6 RS232 ground 5 (link to 1,6,8,9)
7 RS232 out of unit 2
8 RS232 into unit 3
7.2. RS485 Communications Lead
SubConn Cable Analogue Signal
(Sockets in cable box)
Power In
(Banana Pins)
RS232
9 way D type
Pin Function Pin Pin Function Pin
1 +ve Supply
Red plug
2 Analogue X X
3 Analogue Gnd
X & Y
4 0v supply
Black Plug
5 Analogue Y
6 RS485B RS232 Out of unit 2
7 RS485 Gnd RS232 Gnd 5 (link to
1,6,8,9)
8 RS485A RS232 Into Unit 3
Note that there is no accepted standard for the orientation of RS485 A and B functions. The system will
work with the communications lead provided, but if the user is fitting a pigtail and operating the unit via
an independent RS485 system, it may be necessary to swap the RS485 A and B connections to
communicate successfully.