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Category: Asynchronous Serial

October 31, 2016 - Asynchronous Serial

Can I use a PCI or PCIe serial port as a replacement for COM1?

Using Sealevel’s COM Port Manager utility provided with our SeaCOM software suite, a PCI or PCIe serial port can be named “COM1.” After that is…

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October 17, 2016 - Asynchronous Serial

How can I test to see if data is going through my serial tunnel?

  A serial tunnel is formed by two Ethernet serial servers that transmit data received by the local serial port through a TCP/IP connection out…

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October 17, 2016 - Asynchronous Serial

When should I use the RFC 2217 mode of my SeaLINK Ethernet serial server?

  RFC 2217 is a popular protocol for accessing serial ports over a network. A server that uses RFC 2217 allows its serial port to…

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April 12, 2016 - Asynchronous Serial

What is Slew Rate Limiting and when should I use it?

Slew rate is a measurement of how fast the signal voltage changes over a specified period of time. At high data rates, you need a…

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July 14, 2015 - Asynchronous Serial

What is the ‘Gen Mod’ that Sealevel recommended?

  ‘Gen Mod’ is an abbreviation of ‘Generic Modification’ and it ensures that the COM port assignments on a USB serial adapter are always the…

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April 30, 2012 - Asynchronous Serial

How can I guarantee that different USB serial adapters will use the same COM port assignments?

  When you connect a USB serial adapter to a computer, the operating system assigns individual COM port numbers to each serial port. Each USB…

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December 27, 2011 - Asynchronous Serial

Where do I find a Linux driver for my Sealevel asynchronous serial adapter?

Most Sealevel serial adapters use the serial drivers built into the Linux kernel. For USB and UART-based serial adapters, the Linux drivers may need additional…

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December 22, 2011 - Asynchronous Serial

How to add missing vendor/product IDs for UART-based serial adapters in Linux

Linux supports the direct use of 16XXX UART-based devices with the drivers included in the kernel sources. However, kernel versions prior to 3.7.0-rc6 are missing…

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December 22, 2011 - Asynchronous Serial

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…

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