Gemini Software Operation
Gemini 720is Imaging Sonar
Document: 0703-SOM-00002, Issue: 7
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© Tritech International Ltd.
5.1.11. Rotate Image
The Rotate Image button turns the image from the sonar by 90°. The Invert
Display and Flip Image controls will still affect the image displayed on screen.
Rotate Image example with Gemini Sonar data
5.1.12. Draw Grid
The Draw Grid button, when clicked, draws the range and bearing grid on the
displayed Gemini data. The illustration above shows the button in the on state.
5.1.13. Zoom Button
When the
Zoom button
is clicked, a zoom window opens which shows the
data around the mouse pointer in more detail, as the following image shows.
Zoom box example with Gemini Sonar data
If the Gemini unit has CHIRP enabled, the zoom window will show Acoustic Zoom data.
Acoustic Zoom data is additional data collected by the Gemini unit for the highlighted area,
allowing a more detailed view without loss of resolution. If data is being recorded when this
button is enabled, the Acoustic Zoom data will also be recorded in addition to the normal
view data.
If the Gemini unit does not have CHIRP enabled, the zoom window will show Digital Zoom
data. This data is simply a magnified view of the data present on the normal view.
