User's Manual

20 82819_UM_ 40SMkII_E
3 FUNCTIONAL DESCRIPTION
3.1
GENERAL
The Tron 40S MkII consists of upper and lower house mounted together with an equator ring with
gasket and locking pin.
Tron 40S MkII may be split into the following main parts:
1. EPIRB module with antenna
2. Battery module
3. Equator ring with gasket.
3.1.1
EPIRB MODULE WITH ANTENNA
The EPIRB module consists of two printed circuit boards, which are mounted in the upper housing:
1. The main board with main switch.
2. Antenna board (121.5 / 406 MHz) with indicator / flash LED.
For automatic activation of the EPIRB module, put the Tron 40S MkII in the upright position into the
water, and the transmission starts when the seawater completes the circuit between the two external
electrodes (sea water contacts).
When the Tron 40S MkII is mounted in the automatic release bracket mechanism, there
is a safety switch in the EPIRB module, a reed contact activated by a magnet in the bracket, which
disables the seawater contacts.
If the 40S MkII mounted in the automatic release bracket is submerged in water, the hydrostatic release
mechanism will release the Tron 40S MkII at a depth of 2-4 meters. The transmission will start when the
circuit between the seawater contacts is closed and the Tron 40S MkII is out of the bracket.
The EPIRB module may be manually activated with the main switch, and is then independent of
seawater contacts. The EPIRB module will also operate while placed in the bracket when manually
activated.
The Tron 40S MkII may easily be released from the mounting bracket manually. The main switch is also
located on the main board.
The housing is made of polycarbonate.