Configuring the Echo Sounder
Configure the echo sounder settings of the Catch Navigator.
Procedure
- To select the direction of the sounding, click in Sounding Mode, then choose a Mode between Down only or Down + Down2, if this later option is activated.
-
Go back to the page, then click in Down Sounding
or Down2 Sounding, depending on the
Sounding Mode that was
configured.
- Default Frequency (Hz) is 165,000 Hz for the Down Sounding and Down2 Sounding.
-
The Range (m) of
the sounding is the maximum distance at which targets and bottom can be
detected.
Note: We recommend to set the maximum range value when using the automatic range in order to see the sea bottom as soon as possible.
-
Select a Pulse Type
to have an appropriate length of pulse according to the distance to the
bottom:
- Short: shallow waters (100 μs)
- Medium: moderate depth (300 μs)
- Long: deep waters (500 μs)
Important: Pulse length is an important setting for the calibration of the sensor. If you change the pulse length on a sensor calibrated for target strength, you need to calibrate the sensor again. -
Select a TVG
setting to compensate the signal loss in water and have targets or sea
bottom displayed in the same color on the echogram, whatever the distance
from the sensor:
- 20 log: focus on bottom or school of fish.
- 40 log: focus on individual targets.
- 30 log: compromise between the two above settings.
- Set the Detection Threshold (dB TS) to -79 if you want to detect small targets. Otherwise, leave the default settings at -73 dB.
- Do not change the other echo sounder settings.