Vector-LP Radio Beacon Transmitter Technical Instruction Manual Page 2-11
Section 2 Preparation for Use and Installation Issue 1.1
2.2.15 Serial Port Features
The Vector transmitter has several serial
port features which allow interfacing to the
remote control/monitor center and the ATU.
2.2.15.1 Remote Control and Monitoring
Interface
Remote control and monitoring is optionally
available over a serial connection. This
connection can be RS-232, RS-422 or
optionally via modem, USB or TCP/IP. Serial
connections are made to the remote
interface PWB on the back of the front
panel. The modem, USB to serial adapter,
and TCP/IP to serial adapter plug into the
RS-232 connection on the rear of the
exciter.
If purchased, the NAPI80 Site Interface
PWB provides 16 optically isolated monitor
points and 16 form C relay contact control
points. Using the front panel GUI, monitor
points can be configured to indicate alarms
in a high or low logic state and control points
can be configured to automatically toggle on
any status change in the transmitter.
2.2.15.2 ATU Interface
For transmitter systems that use a Nautel
ATU-LP or ATU500 (NAT39B only) antenna
tuning unit, a serial interface can be
established by connecting to the ATU RS-
485 25-pin D-sub connector (J3) on the
remote interface PWB on the back of the
front panel (see Figure 2-2).
2.2.16 RF Monitoring Sample
A true sample of the RF output voltage
waveform is provided on the RF MONITOR
BNC connector (J8) on the remote interface
PWB on the back of the front panel. The RF
MONITOR output should be applied to a
station modulation monitor with a 50 : input
impedance. It may also be monitored by an
oscilloscope during maintenance
procedures. The RF MONITOR
output will
be a nominal 1 V RMS, into a 50 : load,
when the RF output power level is at rated
power.
2.2.17 Parts Supplied by Nautel
An ancillary parts kit is provided with the
transmitter. These parts ensure installation
is not delayed due to lost or damaged parts,
and allow you to maintain the equipment
until a full maintenance spares kit is
obtained. These parts are not intended to be
long-term maintenance spares. The contents
of the ancillary parts kit are itemized in the
packing list. Connectors for remote control/
monitor wiring are included in the ancillary
kit. Detailed information about these parts is
not included in this manual.
2.2.18 Parts Not Supplied by Nautel
Some parts required to complete installation
are not supplied with the transmitter, or are
not provided by Nautel. Each installation
dictates the parts required, but users will
normally need to supply the following:
x A suitable 50 : RF output coaxial cable,
terminated by the appropriate RF
connector.
x All external control/monitor wiring,
including the associated terminating
devices and conduit clamps.
x All electrical power cables, including
conduit, clamps and terminating devices.
x Appropriate batteries when the dc option
is purchased.
x Appropriate ac breaker and dc fusing
2.2.19 Test Equipment and Special
Tools
The test equipment and special tools
required to install and maintain the
transmitter are listed in Table 1-2.
2.2.20 Available Options
There are several options available for the
Vector-LP transmitter. Each option is
described below to assist the user in
selecting the final configuration.
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