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 i
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Resource Center
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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How to configure USB serial adapters in Linux
Dec 23rd 2011
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 g
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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
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How can I measure floating analog signals?
Dec 1st 2011
We recommend using a SeaI/O-570 module, which has eight 16-bit A/D inputs that are capable of measuring floating, or non-referenced, analog signals.For instruction
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What is a floating analog signal?
Dec 1st 2011
A floating signal source is a signal that is not connected in any fashion to the building ground system but rather has an isolated ground reference point
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We assume that you want to use a standard (CAT5/6 EIA/TIA-568B) Ethernet patch cable to connect to the RJ45 pass-through connector on the side of the SeaI/O module, d
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What signal connections or I/O interfaces can Sealevel design into a COM Express carrier board?
Nov 8th 2011
COM Express is the most commonly used Computer on Module implementation. Although there are three different sizes and other technical variations, the Basic
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What is a COM Express Module?
Nov 1st 2011
COM stands for “Computer on Module”. A COM Express module is a small, integrated computer board that contains the CPU and memory, video, Ether
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Why does my Sealevel Digital I/O TTL adapter have 5 volts present after system power on?
Oct 1st 2011
TTL I/O devices are commonly used to control solid-state relay modules that interface a variety of input and output devices. An important consideration in t
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Microsoft Windows maintains the configuration (enumeration) information for every USB device that has ever been connected, unless you explicitly uninstalled th
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How should unused analog inputs be handled?
Sep 1st 2011
Non-connected analog inputs should always be connected to the analog ground or common reference terminal. This eliminates phantom readings on all unuse
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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 signif
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How do SeaLINK Ethernet serial servers transmit modem control signals in serial tunneling mode?
Jul 30th 2011
SeaLINK Ethernet serial servers use RFC-2217, the Telnet COM port control protocol, to transmit modem control signals in serial tunneling mode. Since S
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How do you transmit a continuous stream of synchronous serial data without any “idle time”?
May 27th 2011
Sealevel synchronous serial adapters are capable of a constant output stream if the application program can provide a constant stream of serial data. If you ar
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Sealevel synchronous serial adapters support the three most common non-encoded clocking modes:The Sealevel serial adapter provides the clock using the baud ra
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What is the extra data transmitted between Sealevel Ethernet Serial Servers and the SeaLINK driver?
Apr 29th 2011
The extra data is non-serial Telnet command messages such as COM port settings and modem control signals. SeaLINK devices communicate using the RFC-2217
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In Windows XP Embedded, what components and drivers are required to add multiport serial adapters?
Apr 29th 2011
For proper enumeration of Sealevel multiport serial adapters, the following components must be included in the Microsoft Windows XP Embedded OS image build:&ld
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