Simrad ER60, Operator'S Manual

Page: 39 / 182

Operational procedures
31
850-164692 / Rev.B
12 In the Calibration window, open the File menu, choose
New to open the Record dialogue and to start a new
calibration.
13 Enter the following data in the Record dialogue box:
a Transducer’s serial number.
b Correct theoretical TS for the reference target.
c Allowed deviation from the TS for the reference target.
(This is a window giving the limits for the system’s
acceptance of single target echoes coming from fish.
The closer to the correct reference target TS the limits
have been set, the more of the unwanted fish echoes
will be rejected. On the other hand, if the echo from the
reference target is too close to one of the limits, the
deviation has to be increased before starting collecting
data. This is because it will always be a certain
variation in TS values when the reference target is
being moved to cover the complete beam.)
d Upper and lower depth limits for the target window. (A
narrow window will have same effect as above,
reducing the possibility of detecting unwanted echoes
from fish.)
e Any comments you may wish to add to the calibration
file
14 Click OK when you have finished entering data.
The calibration program will now begin recording data.
Views
You will see two views in the Calibration window; a Plot view
and an Information view.
A vertical bar is shown on the left side of each view. A blue
colour indicates that the view is active, while gray colour
indicates a passive view. If you wish to print a view, or perform
other operations connected to it, you must make sure that the
desired view is active.
In the Plot view you will see recorded data plotted as blue and
red circles. Blue circles indicate TS values below the current
beam model, while red circles indicate values above the current
beam model.
In the upper part of the Information view you will see various
information associated with recording of the calibration data.
Lines containing this information all begin with a
# . Below this
information, recorded values for each new TS detection are
updated continuously during data recording.