RCOM 4987, 4988, 49890 pages

RCOM 4987, 4988, 4989
are designed for communication with AADI real-time
monitoring systems. Measured data are received,
stored and forwarded into new or existing network.
The units are developed for AADI by Develogic GmbH.
Communication Unit 4987 is designed for use in
fixed installations.
Communication Unit 4988 is designed for AADI
Data Buoy.
Communication Unit 4989 is designed for receiving
stations.

Features of RCOM 4987, 4988, 4989

•tEstablish a two-way radio link between the measuring and the receiving station
•tMultipoint to point connection for communication
between several measuring and one receiver station
•tReliable communication due to data validation and
retransmission.
•tData filtering and compression -only relevant data
are transmitted
•tRF modem, GPRS and satellite transponders available
•tStatus messages like e.g. GPS position, radio link
quality and supply voltage
•tTwo way direct link between the TCM and
SEAGUARD® for instrument configuration
•tData are converted into a format described by the
customer
•tData from connected instruments are stored on an
SD card.3 Measurement ranges:
0 - 300m, 0 - 2000m, 0 - 6000m

RCOM units 4987, 4988 and 4989 are designed for transfer
of data between AADI real-time monitoring systems.

still not error-free, an error message are saved in a
separate log file.

Unit 4987 and 4988 are equipment for the transceiver
module, while unit 4989 is for the receiver module.
The units are equipped with a TCM for e.g. data quality
control and instrument configuration.

Data are transmitted on regular intervals and can be set
to other interval than the instruments’ logging interval.

The communication units will establish a two-way radio
link between measuring stations and the receiving
station. Measured data are received, stored and
forwarded into new or existing network by converting
incoming data to format described by the customer.
Data from connected instruments are received on
separate com ports. After checking for errors in the
transmission from the instruments, data are stored
in individual files on SD card. Data with errors will be
re-transmitted from the instruments; if a message is

Data are packetized and checksum is added for data
quality control on the receiving end.
The TCM are able to synchronize the instruments’
internal clock with the GPS time on regular intervals.
Default synchronization interval is once per day.
The radio modem are powered from the TCM.
The RCOM units will interface AADI instruments and
sensors to radio modems. On-board GPS receiver
enables position reporting and time synchronizing for
the instruments.

D399 - Jan 2013