Guardian Telecom Installation and Operation
Models PTR, PTA, PPR & PPA
Guardian's Page/Talk Systems provide reliable and easy to use paging and
communication within industrial environments such as plants, mines, mills
and factories. Individuals can be paged from any station and two or more
persons can communicate on any available line.
The Modules described in this manual are designed for use in harsh,
industrial environments and are identical for single talk line or five talk line
configurations. Modules are available with handsets, connectors for
headsets and as standalone amplifiers. Each Module provides up to twelve
watts of paging power for an external loudspeaker. A page button on the
handset of models with a handset enables one-hand paging operation.
Modules are available for indoor or outdoor use. They may be used along
with appropriate enclosures as a complete station or they may replace
modules in existing stations, either as an upgrade or to replace a
malfunctioning unit. Features of models vary according to their purpose,
however all modules have the same profile and electronic circuitry, and will
fit into any enclosure. For example amplifier modules do not have a
handset. Some models do not have an ambient noise sensor on the
faceplate; these are intended for outdoor use where the door of the
enclosure would prevent the sensor from picking up the ambient noise and
for other applications where an ambient noise sensor is not required. The
models that do have ambient noise sensors on the faceplate can replace
any other module either on a temporary or permanent basis. This is a great
convenience and cost saving feature, since only one spare module needs to
be stocked and a serviceman only has to carry around one module when
testing a system.Modules are secured with four screws for ease of
replacement.
If a PTR (Handset Module) is installed in an indoor housing as a Desk Set
Amplifier the Desk Set and the Wall Station can, at the same time be used
independently of each other. The two can be separated by up to fifty feet.
This feature can save the cost of a complete indoor station if circumstances
permit.
The modular design of the system offers great flexibility in the ways that
components can be combined. For a description of the various
configurations available see Page/Talk Replacement Modules.
In order to avoid acoustical feedback from a loudspeaker receiving a signal
from the station, a jumper on the main circuit board of every station provides
for the associated speaker to be muted when the Page button is pressed.
Group muting is also available for the same purpose. This feature mutes
adjoining speakers when the page button on any station in the group is
pressed.
Guardian's modules, stations and related equipment are compatible with
systems provided by most other manufacturers.
