Chapter 12: Final Recording Medium Setup, Rev. 1.5
12.3.2 JoTron Float-free SFRM Capsule Set-Up
The JoTron Float-free Capsule is a combined SFRM and EPIRB approved for use with the VDR-
100G3S.
The capsule contains a memory module with a standard 1.75GB storage capacity and 10Mb
Ethernet with TCP/IP interface. Data is transferred from the DMM to the FRM via a 10/100Base-
T Ethernet LAN connection via TCP/IP protocol. The capsule will store 12 hours of captured data.
In a situation where a ship may be sinking, the capsule will float free while transmitting both its
position and MMSI for at least 7 days.
12.3.2.1 Planning for the JoTron Float-free SFRM Capsule
The SFRM is supplied with an interconnect cable. This cable must connect to the VDR-100G3/S
through a junction box (supplied with the JoTron capsule). The junction box is normally
mounted on the exterior deck and located near the SFRM and positioned within range of the
interconnect cable.
This junction box can be located inside, but must be located within the cable distance of the FRM
cables. It must also be fully screened and connected to the vessel’s hull. If mounted outside, it
must also be waterproof.
Note! It is highly recommended that cabling connecting the SFRM to the VDR-
100G3/S is installed through a gooseneck conduit (see Figure 12–1 - Sample VDR-
100G3S FRM Installation for a sample SFRM installation.)
The JoTron Float-free, final recording medium capsule is connected to the VDR-100G3/S via a
DC power cable and an Ethernet interface cable. The Ethernet cable is a 10-base-T/STP
(shielded twisted pair), Category 5e with flammability per IEC 95:
The DC power cable connects to the terminal block in the DPU terminal block 24 VDC
supply.
The Ethernet connection is via a RJ45 connector. This is connected to Ethernet port 3 on
the DMM.
The connection between the DMM and the SFRM is a crossover cable.
VDR-100G3/G3S Installation Manual 10/12/2008
12 - 27
To Next Page
Loading...