Specifications

-1.1-
Chapter 1 OPERATION
1.1 OVERVIEW
The VR-5000 consists of Data Collecting Unit or DCU, Data Recording Unit or DRU, and
bridge microphone units. The VDR system continuously store data from the past 12
hours onto the Flash Memory in the capsule, erasing the oldest data stored as new data
is recorded. The data to be recorded includes;
Parameters to be recorded IEC 61162 formatter Notes
.1 Date and time ZDA or RMC
.2 Own ship position GNS, DTM
.3 Speed VBW
.4 Heading HDT
.5 Bridge audio
.6 VHF communication audio
.7 Radar images RGB H/V
.8 Echosounder DPT
.9 IMO mandatory alarms ALR
.10 Rudder order and response RSA, HTM
.11 Engine order and response RPM, XDR
.12 Hull (door) openings status XDR
.13 Watertight and fire doors status XDR
.14 Acceleration and hull stress if available XDR, ALR
.15 Wind speed and direction if available MWV
Power Supply precaution
If ship’s mains power source (100-230 VAC) and emergency source fail, the VR-5000
continues to record bridge audio for 2 h from backup batteries.
Continuity of storing data
The VR-5000 should be provided with power to store data for 12 h on first-in, first-out
basis. Recording is only terminated with a key under the following circumstances:
a) During essential maintenance while the vessel is in port.
b) When the vessel is laid-up.
c) In case of emergency, when the HD is removed.
Data Recording Unit
The Data Recording Unit is housed in a highly visible protective capsule which can
withstand a fire of 1100°C for 1 hour and deep-sea pressure of 6000 m.
The underwater acoustic beacon (pinger) on the capsule automatically transmits 10 ms
pulses at 37.5 kHz for at least 30 days when it is submerged in water. The expected life
of the beacon is 6 years. The DRU is connected to the Data Collecting Unit (DCU) with a