How to configure USB serial adapters in Linux

  The serial USB driver in Linux contains many product IDs for Sealevel devices. However, the newest devices may not be currently included in the driver. This guide consists of example USB device installation instructions using either driver load time parameters or modification of the device driver to natively support the device. There are often subtle […]

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How to fix “crazy mouse” syndrome with USB serial adapters

  Overview This condition is potentially encountered in Microsoft Windows when connecting a serial GPS device to a serial port. It is caused when the NMEA 0183 GPS serial data is misinterpreted as mouse data by the serial port enumerator (serenum.sys), resulting in erratic mouse cursor activity. The following steps will cure the “crazy mouse” […]

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How to integrate the 2107 USB to serial adapter into your RS-485 network

  The 2107 is designed for two-wire (half duplex) RS-485 applications and provides reduced wiring costs and protection against EMI and other induced line noise. To integrate the 2107 with your RS-485 network, start by installing the 2107 per the instructions in the user manual. Since termination and biasing are always present on the 2107, […]

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How to uninstall a USB device that is no longer connected to a computer?

  Microsoft Windows maintains the configuration (enumeration) information for every USB device that has ever been connected, unless you explicitly uninstalled the device before unplugging it. When a USB device is not physically connected to the computer, Windows does not normally display the device in Windows Device Manager. These USB devices are called “non-present” or […]

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I am using a Sealevel GPS modified board. How do I set the data rate?

  The GPS modified boards are designed to work primarily with the Rockwell Collins GPS receiver with a data rate of 76.8 Kbps. The modification is necessary because 76.8 Kbps is not a standard baud rate. To get 76.8 Kbps select 115.2 Kbps as your data rate in the SeaCOM driver. This will result in […]

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I have to reinstall a Sealevel serial product. What is the best way?

  For Windows 95/98/ME/2000/XP/Vista, use Device Manager to uninstall the product prior to removing it from the computer or unplugging it, as in the case with USB serial. This ensures that when the product is reinstalled, the system will see it as a new piece of hardware. Since many Sealevel devices install as “Parent/Child” devices, […]

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I’m having problems with my USB serial device under Windows XP.

  There are known issues with the USB driver built into Windows XP SP1 (Service Pack 1) that affect suspend, hibernation, and restarting. This issue potentially affects all USB devices and is not specific to those manufactured by Sealevel. Microsoft released Hotfix 822603 to address this problem. If you are running Windows XP SP1, visit […]

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What 3rd party software programs work with my Sealevel product?

  Sealevel products are tested with many popular software programs. The 3rd Party Software Support page has a list of these programs with links to application notes that will help your get your Sealevel product working in your choice of application. If you are using a software program not listed on the 3rd Party Software […]

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What 9-bit serial format is supported by Sealevel SeaLINK Ethernet serial servers?

  Sealevel SeaLINK Ethernet serial servers support a 2-byte format to marshal 9-bit serial data between the host computer and the serial server. The least significant bit of the first byte is the 9th bit of the serial frame and the second byte is the first 8 data bits of the serial frame. SeaLINK Ethernet […]

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