Vega Absolute NB-12, User Manual, Page: 10 / 26

Vega NB-12 / User Manual
10
Revision 05 of 21 January 2022
CONTACTS
Description of contacts assignment is in table below. When connecting a radio modem
to external devices with pulse outputs, consider the circuit design of its pulse inputs.
Contact PCB designation Description
1 GND Ground
2 ALARM1 Security/pulse input 1
3 GND Ground
4 ALARM2 Security/pulse input 2
5 GND Ground
6 A_INPUT Analog input
7 GND Ground
8 ONE_WIRE 1-Wire
9 CL+ 4-20 mA «+»
10 CL- 4-20 mA «-»
There are two security inputs on the boars which allows to connect circuits with the
following types of NO contacts:
reed switch;
mechanical pushbutton;
open-collector output.
Circuit design of the pulse inputs