Teledyne Echotrac E20, Operator'S Manual, Page: 34 / 60

THE ECHOTRAC E20 IN ACTION
Echotrac E20 Operator's Manual8 p. 34 of 60 November 25, 2020
Version 8
Uncontrolled Technology Subject to Restrictions Contained on the Cover Page.
6 THE ECHOTRAC E20 IN ACTION
6.1 Survey Operation Modes
For most applications, the Automatic mode is the optimal choice for the E20 to deliver the best data,
in the widest variety of seafloor conditions, as it constantly adapts to the signal received. Should the
operator or hydrographic surveyor desire full control of the sonar, the manual mode provides this
facility. The Semi auto mode provides the user with a mode to run with autonomous settings, with the
option to tweak the applied sonar parameters to their liking.
o
Automatic: This mode is the mode recommended for most operators. This autonomous mode
requires no operating input from the user, and adjusts the applied settings based on a
continual analysis of the sonar signal.
o Semi auto: This mode is recommended in the cases, when you want to slightly adjust or
tweak the automatic settings. Adjustments are indexed settings lower and higher than what
the automatic mode is picking.
If the E20 has already chosen the minimum or maximum value of what the
transducer supports for a sonar setting, tweaking the setting in Semi auto mode
does not reduce (at minimum) or enlarge (at maximum) the applied value further.
o Manual: This mode gives the user full control of the E20 and is recommended for:
 The experienced operator.

Use in an area that the operator knows well.
 The operator who wants static settings in order to avoid ever changing settings that
adjust to a changing environment.
6.2 Marking
Figure 11: Echogram window with three marker annotations
When the Marker icon is active in the UI, the operator can double-click to add an annotation for the
active channel. Click the Marker icon again to hide these markings.