Transmission Mode function
Transmission Mode allows you to control how often the ST90 system shall transmit acoustic energy (ping) into the water. For normal use, choose Maximum. If you choose Maximum, the ST90 system will transmit (ping) continuously and as often as possible. This gives you the maximum refresh rate.
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How to open
This function is opened from the Operation menu.
Description
Select the middle of the button to open a small menu with the available options.
Note
If you are recording raw data to a very slow external memory device, this may reduce the ping rate. The ST90 will not permit a new “ping” until all the data from the previous ping has been saved.
Details
Single Ping
This option allows the ST90 system to transmit single pings. The ST90 system transmits (pings) only when you click the ping symbol on the Transmission Mode button.
Interval
The ST90 system transmits (pings) with a fixed time interval. Ping Interval permits you to choose the time (in milliseconds) between each transmission (ping).
Maximum
The ST90 system transmits (pings) as frequent as possible. The time between each ping (the ping rate) depends mainly on the current range. How fast your computer communicates with external peripherals may also have an effect on the ping rate.
Ping Interval
The Ping Interval function permits you to choose the time (in milliseconds) between each transmission ("ping").
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To change the setting, move the cursor to either side of the button. Select the left side of the button to decrease the value. Select the right side of the button to increase the value. Select the middle of the button to open it.If you have a keyboard connected to the ST90 system, type the requested value.