Asynchronous communication is a timed communication standard. Each bit has a particular width and time that it needs to be stable. Isochronous communication does not…
Synchronous vs Asynchronous cards
There are three main differences between our async and sync cards. The first is cost. Our asynchronous cards are very cost competitive. Our synchronous cards…
What is synchronous communication?
Asynchronous communication is what everyone is used to. Every device you normally connect to a computer is going to be using asynchronous communication. It’s a…
What is asynchronous communication?
The important thing with asynchronous communication is the fact that since it is time-based, the transmitter and the receiver both have to be very accurately…
What is the difference between “interface” and “protocol”?
If you want to send a letter to someone in Germany, the interface is the way that you decide to send the letter. The protocol…
Why is my SeaLINK USB serial adapter or HazPAC 10 Rugged Panel PC (Part #H1400811) serial port not working in Linux?
If your serial port is not working in Linux, please reference this article to learn how to configure USB serial adapters in Linux. USB…
My Ethernet Serial Server is missing from the SeaLINK Device Discovery utility. How do I find it?
The most common solution is to disable all network adapters except for the one connected to the Ethernet Serial server, then try searching for the…
How to resolve communication issues affecting Sealevel’s XR17V35X based serial devices (7xxxec serial cards, 7106e, Relio R1)?
The following devices are based on the XR17V35X and are known to be impacted by the GPIO configuration issue described in this article: 7xxxec serial…
Can Sealevel synchronous serial expansion boards and Relio R2 Sync Server communicate using SDLC or HDLC-derived protocols?
Sealevel synchronous serial expansion boards and the Relio R2 sync server have an SDLC mode that implements many low-level behaviors of SDLC such as…