Scope Xlite USA Version
XliteUSA 01/00
Issue 1
4
System Overview
The Scope Xlite is a POCSAG budget entry point data display radio paging system which can be used to
transmit alphanumeric\ text messages direct to pocket pagers carried by individuals or entire groups.
Information is input by way of an RS232 serial port. Up to 9,999 pagers can be supported on any one
system.
Base Equipment type & description:
Xlite Single Port Paging Transmitter
Transmitter
FCC
ID:
JRNUSASERILINK
Transmitting Frequency: 457.550
MHz
or
457.575
MHz*
Effective Range:
Up to 1 mile with standard aerial
!
* or as specified on separate configuration sheet
!
optional external aerials and amplifiers available for greater range
Section 1: Installation
The information contained in this Section is intended for use by authorized system installation
engineers only. Unqualified personnel should not undertake installation of this equipment under
any circumstances whatsoever.
Location of the hardware
Before locating the hardware in any given location, it is important to take into account the range of
operation that you require to obtain from your system. The standard transmitter can quite easily provide
ranges of up to a mile or more and will provide excellent propagation on most industrial sites, covering a
considerable area with just a quarter wave antenna (BNC terminated) connected directly to the unit.
For coverage of very large sites, or where exceptionally difficult operating conditions exist, it may be
advantageous to install an external antenna. Installing the transmitter on the second or third floor of a
building will more often than not boost overall range. However, horizontal range is not always required as
much as propagation through a multi story building. Here it may be more useful to use a small external
antenna mounted outside the building at half the building height. Sometimes range is required more in
one direction than in the other: moving the aerial to one side of the building can provide a bias in the
required direction, which may overcome the range difficulties. (See section: Other Antennas
).
Important: coaxial feeds which are longer than 5 meters must employ low loss 50 ohm coax. We normally
do not recommend feeds of more than 15 meters for standard applications. However, we suggest you
contact our technical department where other considerations may prove this to be impractical.
A further consideration that must be taken into account is the distance between the transmitter and the
source of the data feeding the transmitter. If the unit is to deploy a standard RS232 serial interface,
reliable reception of the data should not be attempted in excess of 15 meters of cable. These cables
should be screened/shielded and must be kept clear of sources of induced magnetic or electrical noise. In
the event that distances of over 15 meters are required for the data feed, additional drivers or amplifiers
must be installed at both ends of the data link.
