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6. CATCH SENSOR OPERATION
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6.3 Testing for Switch Activation
To test for proper switch activation, do the following:
1. Submerge the unit in SALT
water or short the electrode and trigger bolt.
2. Wait for about 20 seconds, then pull the lanyard for a few seconds and let go.
The LED should flash 13 seconds after the lanyard was pulled. This is the catch
frequency. 13 seconds after the first flash it will flash again. This is the active
frequency.
6.4 Flashing LED Sequence
This paragraph describes the LED sequences for the catch sensor.
1. When the batteries are first installed in the unit, the LED will flash, after a
10-second delay, 15 times. This merely indicates that there is power to the
CPU and it is running.
2. When the unit is submerged (or the electrode and trigger bolt are shorted for
test purposes), the LED will flash four times. This means the unit is in water.
3. After a delay of two seconds, the LED will flash once for every 100 hours that
the unit has been in water without removing the batteries. If the unit has been
operated for under 100 hours it will not flash.
Note: If the battery cap is removed, the 100 hour counter will reset.
4. About 11 seconds after step 3 has been completed, the LED will flash once.
This is when the unit is actually transmitting. If the unit is kept in water, the
LED will flash every 90 seconds. (The flash indicates transmission.)
Step 4 only occurs the first time the unit is activated with new batteries. After the
first time, whenever the unit is activated (via a jumper or submerged) only steps
2 and 3 occur.
6.5 Catch Sensor Transmission Frequency
The transmission frequency of the catch sensor(s) can be changed, by a
qualified technician. For further details, contact a FURUNO agent or dealer.