Vector-LP Radio Beacon Transmitter Technical Instruction Manual
Page
2-1
Section 2 Preparation for Use and Installation
Issue 1.1
Vector-LP Radio Beacon Transmitter
TECHNICAL INSTRUCTION MANUAL
Section 2
PREPARATION FOR USE AND INSTALLATION
2.1 INTRODUCTION
This section contains pre-installation and
installation information for the transmitter.
Nautel recommends that you incorporate
all requirements to ensure optimum
reliability and performance.
NOTE
Failure to comply with these
recommendations and instructions could
void the manufacturer’s warranty. Please
review Nautel’s warranty terms for more
information.
2.2 PREPARATION FOR USE
Prepare the transmitter site to receive the
transmitter prior to its delivery and
installation. Use the following information
to prepare new sites and as evaluating
criteria at existing sites.
NOTE
Frequent reference is made to connectors
and terminal blocks on the remote
interface PWB. This PWB is located on
the back of the front panel.
2.2.1 Transmitter Room
Requirements
The following criteria must be addressed
when finalizing the transmitter site.
2.2.1.1 Transmitter Dimensions
Refer to Table 1-1 or Figure MD-1 for
transmitter dimensions. Dimensions
identify room entry and floor space
requirements and will assist in determining
cable lengths and routing.
2.2.1.2 Transmitter Weights
Refer to Table 1-1 for transmitter weights.
Sufficient manpower or lifting apparatus is
required to move the transmitter.
2.2.1.3 Transmitter Clearances
Refer to Figure 2-1 for recommended
transmitter clearances.
2.2.1.4 Air Flushing
Fans below each RF power module draw
cooling air through filters in the bottom of
the transmitter and exhaust it through
ventilation holes in the top of the RF
power modules. For VR250 transmitters,
the air exchange rate required to achieve
an acceptable intake/exhaust temperature
rise is 110 CFM. Standard VR125
transmitters are convection cooled, but
can be equipped with optional cooling
fans for each RF power module.
2.2.1.5 Cooling and Heating
Refer to Figure 2-1 for transmitter room
ambient air temperature limitations. If
necessary, ensure adequate cooling and/
or heating systems are in place to
maintain appropriate ambient air
temperature.
2.2.1.6 Work Area
Nautel recommends that a suitable work
area with an adequate table surface be
provided adjacent to the transmitter to
permit bench adjustment and repair of
modules. Static precautions must be
observed.
2.2.1.7 Power Source Switch
The
AC INPUT
switch on the back of the
transmitter controls the application of the
ac power source. If an optional dc power
source is being used, Nautel recommends
installing a switching assembly for the dc
power source in close proximity to the
transmitter.
