GE AKTApure, User Manual, Page: 118 / 522

UNICORN interpretation Input connection
Logical 1 Open circuit
Applied voltage 3.5 to 5.0 V
Logical 0 Closed circuit
Applied voltage 0 to 0.8 V
Digital output signals
The digital output signal can be used to control external equipment that can receive digital signals,
such as pumps or fraction collectors. The digital output signals define an open or closed circuit, where
a logical 1 will result in an open circuit and a logical 0 will give a closed circuit. The default level, 1 or
0, is set by the user. The level can be changed by instructions either manually, in System Settings or
by a method. It is possible to send pulses from the current level, with a pulse length of 0.1 s to 10 s.
A closed circuit is always closed against signal ground.
Note:
118 ÄKTA pure User Manual 29119969 AB
3 ÄKTA pure external modules
3.5 I/O-box E9
3.5.3 Digital connector and signals