Microframe Corporation
Series 3002 - DataPage II Transmitter w/Line Port
11
3 SYSTEM OVERVIEW
3.1 PERFORMANCE
The system will normally cover 95% of all
range requirements with the use of just the
internal antenna. The helical quarter wave
antenna supplied with the system can provide
ranges of up to half a mile free space and will
normally cover industrial buildings of up to
100,000 square feet or more. This short helical
wound antenna can be replaced with a dipole
antenna, which can provide ranges in excess of
one mile in free space and considerably en-
hance the unit’s performance in industrial or
commercial environments. Position the unit on
the opposite end of the desk to computers,
telephones and intercoms, etc. to minimize the
potential for cross interference.
3.2 RANGE EXPANSION
The range and performance of this equip-
ment can be improved by the addition of more
efficient aerials.* These can be installed either
inside or outside the building and are connected
to the transmitter with 50-ohm coaxial cable.
An amplifier is also available for very large
sites.* Consult your dealer for further details.
A glass mount is available to install on the
inside of a suitable window, which can boost
range, especially if it’s required in one direction
from the building.
The center fed half wave dipole measuring
approximately 300 mm from tip to tip will
provide excellent all around local signaling.
This can be mounted either inside or outside
the building and is available in either a light-
weight or heavy-duty stainless steel design.
Collinear aerials are also available for exter-
nal application and will, when elevated, boost
overall range with a slight loss to some local
signals.
Pre-terminated coaxial feeders are avail-
able for 5-, 10- or 15-meter requirements. High
frequencies can equate to high power losses.
Always use the best quality cable. RG58 is only
acceptable on cable runs of up to 5 meters. We
recommend RG213 or equivalent on greater
lengths. If in doubt consult your dealer. Co-
axial cable intended for TV satellite or CCTV
installations is normally 75 ohm, and therefore
totally unsuitable, and can cause severe trans-
mitter damage.
*Subject to license conditions.
> Never install aerials near overhead power
lines or adjacent to telephone or public address
or data communication lines.
>Avoid, wherever possible, running aerial
feeder cables alongside other cables, e.g.: tele-
phone and mains.
3.3 FACTORY PROGRAMMING
When the system leaves the factory, it will
have been programmed with a default configu-
ration that sets up the system as follows:
Number of pagers: RANGES SET AS
ORDERED
Default bleep type: A
Password:
72765
System Identity:
REFER TO ORDER
DOCUMENTATION
The system parameters can be changed and
re-programmed via the keyboard, if required
(see previous section: Program Parameters, 3:
Phone).
Your system has been programmed to be
fully functional before leaving the factory. There
is no need to change any settings if you are
happy with the factory settings.
3.4 OVERVIEW
IMPORTANT! This unit must not under
any circumstances be connected direct to
the public telephone network. It is only
intended for indirect connection to an in-
house telephone exchange. Any attempt to
operate the unit other than as intended
will invalidate all equipment warranties
and may result in damage to the equip-
ment, the telephone network or both.
The Scope Digital Paging Interface can be
used to transmit numeric messages from any
telephone connected to your exchange, direct
to the pocket of the individual being paged.
There are two types of interface available that
cover all types of hybrid and PBX systems with
DTMF capability. These can be supplied in two
basic configurations.
1) LP. This interface connects to an exter-
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