User's Manual

LBI-38636S
12
DO NOT SUBSTITUTE PARTS OR
MODIFY PRODUCT
Because of the danger of introducing additional
hazards, do not install substitute parts or perform any
unauthorized modifications to the product.
INTRODUCTION
This manual describes the installation and
connections for a typical MASTR III station combination.
Information provided includes suggested locations and
installation of equipment and hardware, interconnection
and assembly diagrams, alignment instructions, and
troubleshooting suggestions.
The MASTR III cabinet normally includes the
Transmitter/Receiver Shelf, the Transmitter Power
Amplifier, and a Station Power Supply. The assemblies
are mounted in a 37-inch cabinet. Optional 69- inch or
two stacked 37-inch cabinets are available.
CABINET
The system is contained in a 37-inch cabinet with
improved ventilation for greater reliability. The cabinet
can also house optional equipment such as a Duplexer,
Charger, Gell Cell batteries, or Auxiliary Receiver.
STATION POWER SUPPLY
The Station Power Supply provides all necessary
power to run the station. It provides 13.2 volts at 33 amps
to the station from an AC source. The source voltage
depends on the particular area and power sources
available. The power supply is normally mounted beneath
the T/R Shelf.
TRANSMITTER/RECEIVER SHELF
The MASTR III Transmitter/Receiver (T/R) Shelf
contains the station control electronics for dc/tone remote,
re-mote/repeater, or repeater only applications. The
station control electronics consists of a Backplane board,
Power Module, System Module, and an Interface Board.
The back-plane also connects the RF Section which
consists of the Receiver Synthesizer Module, First IF
Module, Second IF Module, and the Transmit Synthesizer
Module.
TRANSMITTER POWER AMPLIFIER
The Transmitter Power Amplifier is mounted directly
behind the T/R Shelf. Cabling from the output of Power
Amplifier will depend on the system configuration.
UNPACKING EQUIPMENT
Unpack the station and carefully inspect each item. If
any damage has occurred to the equipment during
shipment, immediately file a claim with the freight
carrier. AC power adequate to meet system requirements,
environmental control, and digital or voice grade phone
lines must be available at the site prior to installation.
SITE PREPARATION AND
INSTALLATION
CABINET INSTALLATION
The MASTR III station cabinet is designed for
servicing from the front. However, the system may also
be serviced from the rear when adequate space is
available. The cabinet should be mounted on a level, solid
surface.
If rear servicing is desired, cabinets should be setup
with a minimum of 24-inches of clearance in the rear and
between cabinets or wall to permit ventilation and room
for the service-man to move between and behind the
cabinets.
If space is at a premium or if servicing is to be made
from the front only, then cabinets should be setup with a
minimum of 18-inches of clearance in the rear and 12-
inches between cabinets to permit ventilation. However,
access to the rear of the cabinets may still be necessary in
order to install or repair antenna or power cables.
Single and double stacked 37-inch cabinets must be
securely anchored to the floor according to the footprint
shown in Figure 2 and following single or double stacked
installation instructions.
Single 37-inch Cabinet Installation
The station provides for front and rear door servicing
or front door only servicing in tight space situations. The
front and rear of the station must be kept clear of
obstructions so that the serviceman can easily remove the
front and rear doors for servicing. Also, the front and rear
air vent louvers and rear cable outlets must be free of
obstructions.