Installation Guide

Table Of Contents
Chapter 4
16 Access Points Controller Card (APCC)
Installation Guide Sensys Networks, Inc.
Connection via a wireless network path – for example, using GSM cellular
networks (EDGE/GPRS data services) or CDMA cellular networks (1xRTT
data services).
Additionally, event data may be forwarded to a local traffic signal controller via an
APCC. This interface converts event data to the signal pattern required by the
traffic controller.
Determining the Location of the SPP
The physical location of the SPP is the primary determinant of communications
quality and, as such, the network's overall usefulness and reliability. Selecting a
location involves several factors (including other local RF transmissions) that may
make pre-assigned locations problematic.
Optimal Location Criteria
Optimal locations for SPP digital radios meet all of the following criteria:
are high enough to promote high quality RF communications on a sustained
basis
allow a line-of-sight path to (optional) isolator, wireless sensors, and repeaters
are within recommended distances for the APCC, (optional) isolator, and
wireless sensors
allow the SPP to be mounted with its bulkhead connector and cellular antenna
(if applicable) pointed toward the ground
are within specified cable length limits
do not submit the SPP to avoidable vibration, shaking, or movement
are reasonably accessible to field support personnel
DRAFT