COM Express is the most commonly used Computer on Module implementation. Although there are three different sizes and other technical variations, the Basic size…
What is a COM Express Module?
COM stands for Computer on Module. A COM Express module is a small, integrated computer board that contains the CPU and memory, video, Ethernet…
Why does my Sealevel Digital I/O TTL adapter have 5 volts present after system power on?
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 these…
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…
How should unused analog inputs be handled?
Non-connected analog inputs should always be connected to the analog ground or common reference terminal. This eliminates phantom readings on all unused analog inputs.…
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…
How do SeaLINK Ethernet serial servers transmit modem control signals in serial tunneling mode?
SeaLINK Ethernet serial servers use RFC-2217, the Telnet COM port control protocol, to transmit modem control signals in serial tunneling mode. Since SeaLINK Ethernet…
What clocking modes do Sealevel synchronous serial adapters support?
Sealevel synchronous serial adapters support the three most common non-encoded clocking modes: The Sealevel serial adapter provides the clock using the baud rate generator…
How do you transmit a continuous stream of synchronous serial data without any “idle time”?
Sealevel synchronous serial adapters are capable of a constant output stream if the application program can provide a constant stream of serial data. If…