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…
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…
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…
In Windows XP Embedded, what components and drivers are required to add multiport serial adapters?
For proper enumeration of Sealevel multiport serial adapters, the following components must be included in the Microsoft Windows XP Embedded OS image build: “Class…
What is the extra data transmitted between Sealevel Ethernet Serial Servers and the SeaLINK driver?
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 Telnet…