Off Course Alarm and Heading Indicators - 1 Pages

NAVITRON SYSTEMS LTD
Off Course Alarm and Heading Indicators
Designed and developed by Navitron Systems Ltd the Off Course
Alarm type NT925OCA is available in two versions.
NT925OCA / 1 is primarily intended for use as an independently
referenced course monitor which, when installed as an independent
system or in conjunction with an appropriate Navitron Autopilot system,
renders the entire configuration compliant with all articles of IMO
Resolution A.342(ix).
Dual Heading input ports are standard and can be connected to accept
magnetic information derived from a Navitron heading sensor coil
attached above or below an existing ships compass and/ or a range of
NMEA 0183 heading sentences derived from proprietary sources such
as GPS compasses and Gyro's etc. Whilst only one heading input is
essential, dual inputs will provide a back up system where either input
maybe chosen as the primary or secondary heading reference.
Standard features include installation programmable Deviation and
Variation correction, NMEA 0183 and Step by Step (installation
Programmable 3, 6,12 and 24 step/degree) heading outputs for use by
proprietary radars etc.
NT925OCA / 2 is designed for use as an independently referenced Off
Course Alarm but includes a Course Comparator Alarm which may be
enabled or disabled during installation as required.
Simple to operate, both versions feature: 3 digit course set display
2 digit course error display
3o to 30o OCA trip level
Red backlight illumination
11 - 40 Vdc power supply
Unlike the heading sensor coil and single NMEA input associated with
the NT925OCA / 1, the NT925OCA / 2 features dual NMEA 0183
heading input ports. Only one input is required for Off Course Alarm
operation whilst dual
inputs are essential for the additional Course Comparator function
which continuously monitors and compares the two sets of NMEA data
received. In the event of excessive differences between the data
received (trip level installation programmable 1-20") the alarm is
activated.
A Step by Step (installation programmable 3, 6,12 and 24 step/degree)
output facility is standard
Type Approved (UK National Certification by Notified Body QinetiQ)
The NT920DHR / 2 Digital Heading Repeater is immediately compatible
with NMEA 0183 heading data and is equipped with an opto isolated
input port for direct connection to proprietary senders (gyro's, GPS
compasses etc.) transmitting the following sentence types.
$XXHDT, $XXHDG, $XXHDM, $XXHCC, $HCHSC.
Ruggedly engineered and suitable for bracket or console mounting in
internal and external locations, the NT920DHR / 2 may be installed in
single or multihead configurations as add on repeaters with proprietary
equipment or to provide an independent system with Navitron
equipment such as the NT925OCA 1 Off Course Alarm. Standard
features include a 3 or 4 digit 25mm LCD display of current heading
optimised for night viewing by operator variable red backlight
illumination.
NAVITRON SYSTEMS LTD (Registered in England 2607869)
Osborn House, 25E Brockhampton Lane, Havant, Hampshire PO9 1JT
TEL: (UK)
023 9249 8740
FAX: (UK)
023 9249 8783
(INT) +44 23 9249 8740
(INT) +44 23 9249 8783
E-mail: sales@navitron.co.uk
Web: www.navitron.co.uk

Off Course Alarm and Heading Indicators
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