GENERAL DESCRIPTION
The DSC 9000 is an MF/HF DSC
Controller-Receiver which complies with the
GMDSSrequirements specifiedin SOLAS88,
chapter IV, when it is connected to a SKANTI
TRP7000orTRP8000oranothersuitableHF
transceiver.
It is designed in accordance with the
recommendations and specifications of the
IMO, ITU and CEPT for Class-A DSC
equipment in the maritime mobile MF/HF
service.
The Digital Selective Calling (DSC) system is
a world-wide system for ship-to-shore,
shore-to-ship, and ship-to-ship calling. It is an
essential element in the Global Maritime
Distress and Safety System (GMDSS) but is
also used for public correspondence with land
networks through coast stations providing this
service.
Calls may be directed to single stations, to
groups of stations or to all ships, and contain
information about the category of the call
(distress, urgency, safety, ship’s business or
routine), proposed frequency for subsequent
communication, etc. In distress calls the
distress position, nature of distress, etc. may
be included.
Visualandaudiblesignalsadvisethereceiving
party when calls are received. When contact
has been established, frequencies are
changed to the indicated working frequencies
andthecommunicationiscarriedoutasusual.
DSC 9000 MF/HF Controller-Receiver is a
compact equipment in modular design
featuring the latest SMD technology. It
consists of:
DCU 9000, DSC Control Unit, compact and
easy to use, with large 160-character backlit
LCD display with 4 lines. Splash-proof, backlit
keyboard with tactile and audible feed-back.
Up to 5 DCU 9000 sets may be connected to
the DU 9000. The units are chain connected
with a single cable.
DU 9000 DSC Unit, containing single channel
or scanning receiver, power supply module,
and the PCP module (Programmable
Communication Processor) with DSC
modulator, two DSC demodulators, and
processor for control of the DSC unit and the
communication with the DCU 9000, the HF
transceiver and other connected equipment.
The unit is fully remote controlled from the
DCU 9000 and may be installed in any
convenient, suitable place. An additional DU
9006 DSC Unit configured as a DSC watch
receiver may be connected where a second
continuous watch receiver is needed.
The DSC 9000 MF/HF Controller-Receiver
hascompletecontroloftheSKANTITRP7000
orTRP8000HFtransceiver.Thisfeaturegives
automatic transfer of the receiver and
transmitter frequencies from the DSC 9000 to
the HF transceiver. Furthermore, if an
additional DU 9006 watch receiver is not
connected, the receiver in the SKANTI TRP
7000orTRP8000maybeutilizedforscanning
of DSC calling channels while the receiver in
the DSC 9000 simultaneously maintains
distress and safety watch.
Interface(NMEA)tonavigationalequipmentis
included for automatic position updating. An
external distress button may be connected for
remoteactivationofdistresscalls,andexternal
alarmsmaybeconnectedforremoteindication
of received calls.
A serial interface for connection of a printer is
included for selectable print-out of all calls,
distress and safety calls only, transmitted and
receivedcalls,orreceived callsonlyas wellas
the possibility of printing out Short-dial list,
DSC frequency list, MMSI list, Telephone list
and configuration settings.
Received calls are stored until read-out. Up to
20 different distress calls and 20 other calls
can be contained in the store.
TheDSC9000remembersthelasttransmitted
call in each format and category for easy
repetition. Furthermore a short-dial register is
included which may contain up to 99 user
pre-programmed calls for easy recall.
When sending acknowledgements or calls in
response to a received call, relevant
information is automatically transferred from
the received call for fast and easy response.
The DSC 9000 has direct-dial facilities in
accordance with the operational procedures
specifiedforshipstationsinRecommendation
ITU-R M.1080: INTERNATIONAL MARITIME
MF/HF RADIOTELEPHONE SYSTEM WITH
AUTOMATIC FACILITIES BASED ON DSC
SIGNALLING FORMAT.
The DSC 9000 has built-in test facilities for
easy routine testing and as an aid for trouble
shooting and service.
GENERAL DESCRIPTION INTRODUCTION
DSC 9000 TECHNICAL MANUAL 1-3
