Page 25 of 77
SKIPPER Electronics AS
Edition: 2017-06-12
GDS102 Operation and Installation Manual
First Page Last PagePrev Page Next Page
Chapter: 2 Operation
Fig. 2.13. Screen 12. Oscilloscope screen.
The screen can be used for transceiver and transducer trouble-shooting. Left part of the screen consists of the
following areas:
A) The graphical real-time presentation of the received echo signal versus time (oscillogram window).
• Horizontal (time) scale factor is indicated in the upper middle part of the oscillogram window. Vertical
scale represents the digitized signal value, which corresponds to the signal strength. The signal is
presented by a green curve.
• Red vertical marker line is indication of detected bottom.
• Blue vertical marker lines indicate other strong echoes which are also taken into consideration by bottom
detection algorithm.
• Horizontal marker line (magenta) is a bottom signal trigger level.
• The logarithmic shaped curve (grey) is displaying the receiver gain settings versus time. The formula G
+ T x log (R) + a is used for gain calculation for each moment of time, where G is a GAIN setting, T -
TVG, R - distance of sound travel and a is a constant, compensating for dierent attenuation of signals
with dierent frequencies.
To Next Page
Loading...
