Chapter 12: Final Recording Medium Setup, Rev. 1.5
12.3 Float-free SFRM Capsules
The Float-free SFRM capsule is a buoyant capsule that serves as an FRM and Cospas-Sarsat
EPIRB. If the buoyant capsule and its bracket are submerged, it automatically floats free and
activates the EPIRB (Emergency Positioning Indicating Radio Beacon). When activated, the
EPIRB gives an immediate alarm, transmitting the ship ID and position in a primary alarm for the
search and rescue authorities.
Only activate the EPIRB in an emergency situation. For periodic testing, a test function is
implemented. No emergency signal is transmitted during the self-test. During the test cycle the
EPIRB does a self-test of the transmitters and the battery status. The battery of the EPIRB will
last for at least 168 hours after it is activated.
12.3.1 Rutter-ACR Float-free SFRM Capsule Setup
The Rutter-ACR Float-free SFRM Capsule includes an inner memory capsule and the yellow
exterior mounting bracket SeaShelter2. The memory capsule contains non-volatile memory
(Flash), intended to store ship parameters in real time. The storage memory will continually store
the last 12 hours (minimum) of received data.
The interface between the VDR-100G3 and the memory capsule is a standard 10/100 Base-T
Ethernet connection using TCP/IP standard protocol. Data is transferred from the DMM to the
FRM via a 10/100Base-T Ethernet LAN connection via TCP/IP protocol.
Power for the capsule is provided over the same Ethernet cable using PoE (Power Over
Ethernet). A separate power cable is not required.
Rutter-ACR Float-free SFRM Capsules shipped with VDR-100G3\S serial numbers 30108110376
and later, include a set of mounting plates with predrilled holes that are attached to the exterior of
the SeaShelter2 mounting bracket. This allows the technician to mount the Rutter ACR Float free
capsule without removing the protective cover of the SFRM.
Rutter ACR Float-free capsule
VDR-100G3/G3S Installation Manual 10/12/2008
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