Copyright, 2004 Imaging Solutions Group
of NY
, Inc., All Rights Reserved
Revision 2.1 Subject to change without notice.
16 of 33
Applications Example: Using The RS422 Trigger Input
1) Preferred Method – RS422 Driver
The optimal way to utilize this input to trigger the camera is to drive the RS422 Receiver
in the camera with the corresponding driver device. The recommended driver is TI part
number SN65HVD3082ED. This method provides a balanced, robust differential input.
2) Alternate Method - Driving the RS422 Trigger Input with Standard
3.3 or 5 Volt CMOS/TTL Logic
Standard digital logic can be used to simulate a differential signal and trigger the camera
using the RS422 input. This can be accomplished by generating a 3.3 or 5 Volt logic
signal for RS422 T, and providing a logically inverted output of this signal for
RS422 Trigger -. The following diagram illustrates this approach:
Non-Inverting Buffer
3.3 or 5 Volt Logic
Inverting Buffer
3.3 or 5 Volt Logic
Trigger
T (to pin 9)
Trigger - (to pin 10)
Summary of Contents for LW-3-S-1394
Page 32: ......
