Echogram is fixed and blue

The echogram displayed in Scala2 is completely blue. There is no yellow line moving on top of the echogram, which means that no sonar data is received.

Sounder frequency may be outside the correct frequency range.

1. From Mosa2, click Trawl Explorer > Ping Down Frequency and check that the frequency is between kHz.
2. If not, change the frequency.

You may have dragged and dropped wrong sonar data to the display.

1. Check that the name of the sensor on the top left corner of the echogram is .
2. If not, from sensor data, click + hold Range of Sonar Data and drag it to the page.

The sounder in the transducer is damaged.

• Contact the support service for repair.