Distances are incorrect or irregular

The threshold of the sensor detection level is too low.

1. Connect the sensor to Mosa2.
2. From Mosa2, click Menu > Expert and enter the password copernic.
3. Click the tab Spread and from Threshold Detection Level, add 10 to the current level.
4. Test the sensor when installed on the doors during trawling, and if needed, add 12 again (this corresponds to 6 dB).

There is a conflict between frequencies.

• Make sure there is a minimum distance of 100 Hz between all the telegram frequencies.

The spread telegrams you entered in Mosa2 and those you entered in the receiver settings (Scala2 receiver page or system web page) are not the same.

• Compare the telegrams you configured on Mosa2 and those you entered in the receiver settings. Change if necessary.
  
  

If the spread distances are very small such as 1 meter or less, the Master and Starboard sensors have been inverted on the doors. In that case, you will also have wrong pitch and roll values.

• Open the pockets and check the top of the housing of the sensor: the one with a green marker must be on the starboard side and the one with a red marker on the port side. If there is no marker on the top, remove the sensor and check on the side if there is a marker. The side of the sensor with a circle (1) must be oriented towards the outside.