The most convenient method is to use a Sealevel Interface Converter to convert the electrical interface from RS-232 to RS-422 or RS-485. Use one of…
I have to reinstall a Sealevel serial product. What is the best way?
For Windows 95/98/ME/2000/XP/Vista, use Device Manager to uninstall the product prior to removing it from the computer or unplugging it, as in the case with…
Why do I need to connect a ground line when using RS-422 or RS-485 communications?
By connecting the ground wire, you avoid potential communication problems. Differential serial communications such as RS-422 and RS-485 use the ground as a reference.…
I am using a Sealevel GPS modified board. How do I set the data rate?
The GPS modified boards are designed to work primarily with the Rockwell Collins GPS receiver with a data rate of 76.8 Kbps. The modification…
Do Sealevel products support interrupt sharing with other devices?
Yes. The Sealevel SeaCOM serial driver fully supports interrupt sharing. There are however a couple of points to mention. All Sealevel PCI serial cards fully…
Do I need to terminate modem control signals if I’m not using them?
It is always a good idea to terminate any unused signal lines. Floating signals can generate interrupts and drastically degrade system performance. The Sealevel SeaCOM…
What is the maximum distance I can communicate using a standard RS-232 serial cable?
Practically, it depends on your application and environment. The RS-232 standard specifies transmitting data up to 50 feet at 9600 bits per second (bps).
Do you have sample Windows programs for writing to a serial port?
We offer serial programming samples with source code in the archive link below. Examples of programming samples include: a simple terminal program; a program…
Will a standard RS-232 DB25 to DB9 adapter or cable work with my RS-422, RS-485 board?
No. Standard DB25 to DB9 adapters and cables are made to convert an RS-232 DB25 pin out to an RS-232 DB9 pin out. As such,…