Ocean Signal MOB1 User Manual page 6

•
Pass the tape around the bladder of the life jacket and clip the
bracket to the MOB1 so that the MOB1 will be on the outside
of the inflation tube as shown.
•
Pull the tape tight with the free end of the tape, so that
the bladder is free to inflate and remains folded in
accordance with the life jacket manufacturer's
instructions. Do not over tighten the tape.
Test for tightness by ensuring you can freely insert a
finger in between the tape and the bladder.
•
Once the MOB1 is fully attached to the life-jacket, you are
ready to arm the device, by sliding the red arming tab down.
Failure to arm the MOB1 will inhibit the auto
activation of the MOB1 when needed and will STOP
the life jacket inflating correctly.
If the MOB1 has turned on during the installation
process, make sure it is turned off by pressing and
holding the TEST/OFF Key until the LED flashes red
twice and release.
•
Repack the bladder into the cover, ensuring the bladder does not get trapped in the
fastening mechanism or tangled up.
For installation to life jackets where the bladder is permanently attached to the
cover, please see the separate instruction sheet, available from the Ocean
Signal website.
MOB1 USER MANUAL
8 Part No 912S-01517
6. Testing
Routine testing of your MOB1 once a month is recommended to ensure it is in good
working order if needed, but please follow the guidance notes below on the frequency that
tests should be carried out. Please remember that each test will reduce the battery
capacity slightly and reduce the operation time of your MOB1 during an emergency.
6.1 Functional test
To test your MOB1 is functioning correctly, press and hold the TEST/OFF Key for one
second. The red LED will start flashing, indicating test mode is activated. The switch may
now be released. After a short pause the strobe will flash and then the unit will
automatically turn off and the indicator LED will flash green or amber to show a pass or
red to show fail status.
The number of flashes in each group indicates the battery status or failure as shown in
Table 1. This battery indicator is used as the electronic witness that the MOB1 has been
activated.
Green / Amber Indicator.
Changes to Amber after 1 hour of use
No of Flashes No of Hours Used
0 to 1hr (Green)
1 Flash
1 to 2hrs (Amber)
2 Flashes 1 to 2hrs (Amber)
3 Flashes 2 to 4hrs (Amber)
4 Flashes 4 to 6hrs (Amber)
5 Flashes 8 to 10hrs (Amber)
6 Flashes Over 10hrs (Amber)
Table 1: Pass/Fail indication
The amber test result indicates the battery has been used for over one hour or
the allowed number of tests has been exceeded. The MOB1 will still operate
normally in distress, but the battery should be replaced immediately to ensure
the full operating life when your MOB1 is needed.
The Pass/Fail status indication is repeated a second time after a short delay.
6.2 DSC Transmission Test
To initiate a DSC test transmission, press and hold the TEST/OFF Key. The red LED will
start flashing, then after five seconds become steady. Release the TEST/OFF Key. After a
short pause a DSC Routine call to your vessel's DSC VHF will be transmitted. The strobe
MOB1 USER MANUAL
Red indicator
status
Type of Failure
Frequency generation
Transmit Power
Battery failed
No GPS Fix
13 Version 01.00 13/02/2015