Mini-Seis III Pro™ Operating Manual
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DB9 connector. The USB selection means that USB will be used which is the male DB9
connector. When the USB cable is connected to a computer, the USB will be available
regardless of the Data Port setting.
The USB will consume a significant amount of power if left on. As long as a computer
connection is detected, the USB will remain active. However, if the connection is removed,
the USB will power down after a minute or two of inactivity. It can be reactivated by
attaching the USB cable again.
When the USB cable is connected to the instrument and then connected to the computer, a
virtual COM port will be created. This COM port will be visible in the list of available ports
in the Seismograph Data Analysis software. The virtual COM port can also be displayed by
looking at Device Manager in Windows.
If the virtual COM port is not created, the drivers will need to be installed. The driver may
be installed from the Seismograph Data Analysis software.
Main Screen Baud Rate
The Baud Rate field only applies to the RS232 Data Port selection. Whatever rate is selected,
the same rate must be set in the computer software when using a direct serial connection.
When using a remote access device like a cellular modem, the baud rate of the remote
access device must match the instrument’s baud rate.
It is anticipated that USB will be used for direct connections and not RS232. Remote access
using serial may necessitate using a lower baud rate if the signal quality is poor.