User`s guide

Hardware Installation
100-8006-152G AirborneDirect™ Serial Bridge User’s Guide Page 13
Quatech, Inc. Confidential
Interface Selector Shunts
Figure 4 (see page 12) shows the interface selector shunts and header. These configure the
Bridge’s serial interface for RS-232, RS-422, or RS-485, as follows:
RS-485 w/
Termination
RS-232 Power Pin 9,
Cable Sense
1
1
RS-232
Cable Sense
1
RS-422 w/
Termination
1
Figure 5. Interface Selector Shunts
To allow reliable connection through an RS-232, RS-422, or RS-485 interface, set these shunts
appropriately before using the Bridge with your application.
Note:
The interface type selected by the interface selector shunts must match the
Interface Type setting on the Serial Interface Configuration page of the ACC
interface (see page 35). Otherwise, this mismatch prevents data from being
exchanged.