FujiFilm VisualSonics Vevo F2 User Manual page 315

Settings
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Display Channel Data: Toggles whether received channel data is displayed on the preview
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graph. If this setting is off, the transmit can be repeated much faster (approximately 50x faster
or more) than with it on. This is useful for hydrophone measurements.
When this setting is off, the "capture data" button changes to read "transmit data"
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because the transducer is transmitting data without processing it to display on the
graph.
Use Minimum PRI: Select this setting to make the transducer fire as often as it can. The firing
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rate varies depending on whether channel data is displayed, and the depth of the signal.
When Display Channel Data is on, the frame rate is limited by the download rate,
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which greatly hinders the rate at which the transducer can fire.
When Display Channel Data is off, the transducer can fire at a much faster rate, but
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the fire rate can be limited using this setting.
Modes
Caution: Be aware of thermal considerations when turning off Display
Channel Data. This is because the transmit rate is much higher when it
is off. For more information, refer to Transducer Thermal Management
on page 237.
Vevo F2 Imaging System User Manual
315