TransCore SmartPass AI1611, System Manual

Page: 37 / 179

Introduction
one of the following communications interface based on the specific needs of your
site.
Use an RS–232 interface if one or more of the following items apply to your site:
•
The host computer system is less than 15.2 m from SmartPass
•
The host computer system is more than 15.2 m from SmartPass and a pair of RF
modems or limited distance modem/line drivers over copper wire are used for
communications between SmartPass and the host. The distance from the RF
modem to SmartPass should not exceed 15.2 m.
•
Other common communications devices that use RS–232 have been selected, such
as fiber optics
Use an RS–422 interface if one or more of the following items apply to your site:
•
The host computer is more than 15.2 m from SmartPass
•
The host computer has an external limited-distance modem
The standard RS–422 connection has a maximum distance of 1.2 km.
Use a Wiegand interface, which includes an RS–232 interface, if SmartPass must
interface with equipment requiring the W5 V DC data0-data1-gnd interface.
Note: You must order tags programmed with Wiegand-formatted data when using
Wiegand-compatible readers.
Input Power Supply
The input power supply configurations should be based on the specific needs of your
site. SmartPass Model AI1611 uses 90–260 V AC, 47–63 Hz power.
Communications Cables
The appropriate communications cable length depends on the physical characteristics
of the SmartPass installation site. Select one of the following options for SmartPass
communications cable length.
•
Select the short cable option if SmartPass will be located less than 1.2 m from the
junction box.
•
Select the long cable option if SmartPass will be located more than 1.2 m from the
junction box. This cable is approximately 6.1 m long.
Power Cables
The appropriate power cable length depends on the physical characteristics of the
SmartPass installation site. Select one of the following options for SmartPass power
cable length.
•
Select the short cable option if SmartPass will be located less than 1.2 m from the
junction box.
1-5