Omega Vehicle Security OME-PIO-D56 - Manual (Page 22)

2.5.5 OME-DB-24PD Isolated Input Board
The OME-DB-24PD is a 24 channel isolated digital input daughter board. The
optically isolated inputs of the OME-DB-24PD consist of a bi-directional opto-
coupler with a resistor for current sensing. Use the OME-DB-24PD to sense DC
signals from TTL levels up to 24V or use the OME-DB-24PD to sense a wide range
of AC signals. Use this board to isolate the computer from large common-mode
voltages, ground loops and transient voltage spikes that often occur in industrial
environments.
OME-PIO-D56/D24
OME-PIO-D56/D24
V+
V-
Opto-Isolated
OME-DB-24PD
AC or DC Signal
0V to 24V
OME-DB-24PD
50-pin flat-cable header Yes
D-sub 37-pin header Yes
OME-PIO-D56/PIO-D24 User Manual (Ver.2.1, Oct/2003, PPH-005-21) ---- 20