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Sensor Configuration
Learn how to configure the sensor settings.
Configuring Uplink, Up and Down Settings
You can configure different settings for uplink, down and up sounding.
Configuring Autorange
You can configure the sensor so that the range of the sounding adapts automatically to the bottom distance detected. This gives you echogram images with a better quality when at shallow depths, because the range becomes smaller.

Sensor Configuration
Learn how to configure the sensor settings.
- Installing Mosa2
  If Mosa2 is not already installed on the computer, you need to install it to configure the sensor.
- Connecting the Sensor to Mosa2
  To configure the sensor, you need to connect it to Mosa2.
- Configuring a WiFi Network
  If you have your own WiFi network, you can configure the HDTE to automatically connect to it. If no WiFi network is configured, the HDTE automatically turns itself into a WiFi access point.
- Sounding Modes
  The sensor can send pings according to three different sounding modes.
- Configuring Uplink, Up and Down Settings
  You can configure different settings for uplink, down and up sounding.
  - Configuring Autorange
    You can configure the sensor so that the range of the sounding adapts automatically to the bottom distance detected. This gives you echogram images with a better quality when at shallow depths, because the range becomes smaller.
  - About Time Variable Gain
    TVG (Time Variable Gain) is a method that compensate signal loss in the water. Basically, the aim is to have targets or sea bottom displayed in the same color on the echogram, whatever the distance from the sensor.
- Configuring Measurements Sending Sequence
  You can configure the order and types of measurements (e.g. temperature, pitch, roll...) sent by the uplink to the receiver.
- Getting SD Card High Resolution Data
  You can download and replay data recorded on the sensor SD card. These data are in higher resolution and you can see target strength values without uplink sound transmission loss.
- Testing Measures
  You can test the measures taken by the sensor (e.g. battery level, temperature, depth) to check that there are no faults.
- Exporting Sensor Configuration for Record Keeping
  You can export the sensor settings you configured on Mosa2 in order to keep track of the sensor configuration settings.
- Exporting Sensor Configuration for Receiver
  You can export the sensor settings you configured on Mosa2 in an xml file. You can afterwards use this xml file when adding the sensor to a receiver.

Configuring Autorange

You can configure the sensor so that the range of the sounding adapts automatically to the bottom distance detected. This gives you echogram images with a better quality when at shallow depths, because the range becomes smaller.

About this task

You can use autorange only when using DOWN only sounding mode.
We do not recommend to use this mode for pelagic fishing because setting a fixed small range will give you better quality images.

Procedure

From the panel at the top of the User settings, select Dynamic range.
From the DOWN panel, select the maximum range (30m).
From Trawl opening, enter a trawl opening distance to be sure the sensor will search for the bottom beginning from a certain distance. This prevent the sensor from confusing the footrope or a school of fish with the bottom. For example, if the footrope is at 4 meters, enter a greater distance, such as 5 meters.

The range of the sounding changes according to the distance to the bottom detected.


Distance to bottom	Will emit at a range of...
Beyond 20 m	Range set in Down range.
Between 10 and 20 m	20 m
Between 5 and 10 m	10 m
Less than 5 m	5 m

On Scala2, echogram images will be displayed like the example below:


	You can see that the range of the sounding adapts to the bottom detected (1). Basically, if the bottom is closer, the image on the echogram is shorter and of better quality, but if the bottom is farther, the image is longer and of lesser quality.