For Unix, see a Usenet post by Mitch Chapman: http://groups.google.com/groups?selm=34A04430.CF9@ohioee.com

A#8.15: This is usually caused by serial port configuration problems. Common symptoms may be: % copycat .ttyco .ttya Error opening tty .ttya, aborting. or % /usr/sbin/getty 8bit.38400 .ttya getty: .ttya: I/O error The first thing to check is that the following GNO serial port drivers exist: /dev/modem /dev/printer Next, ensure the following two lines are in your /etc/tty.config file, and that they are uncommented: modem 2 .ttya printer 1 . See similar questions...

If I am in a loop processing Tcl code, even though I call "update idletasks" I cannot change the cursor, and the pointer position is not updated See similar questions...

RS232 is a standard for serial communication over a short distance. The signal is converted to +/- 12 volts for logic "1" and "0" respectively. See similar questions...

Yes, because the SignaLink doesn't require a connection to the computer's serial port! Unlike other interfaces, the SignaLink never requires a serial port connection. This is particularly handy if your computer doesn't happen to have one! In addition to simplifying your installation, this feature also reduces the likelihood of the computer's RF noise getting into your radio. It also eliminates serial port related transmit problems that plague other interfaces. See similar questions...

The serial port should be located on the back of your computer. An example of a serial port image is provided here. See similar questions...

RS232 can be used for fine adjustment and can also substitute remote control functions. To check if your RS232 port is working, download and perform the quick test method provided. See similar questions...

Answer: RS232 will reliably communicate up to 15 metres (~50 feet). It may be the case that with a well shielded cable in a noiseless environment greater distances can be achieved. See similar questions...

I've connected the USB to Serial adapter but it's on Com Port 5 (or higher) and your software only has Ports 1-4. This issue applies to the c\temp software only. This has been resolved with the new version of the MDAS-Pro software. If you do not have a copy of this software, please contact us. See similar questions...

Some unnamed clone cards have also been known to work, especially those that claim to be AST compatible. USB device support was added to FreeBSD 3.1. However, it is still in preliminary state and may not always work as of version 3.2. If you want to experiment with the USB keyboard support, follow the procedure described below. Add the following lines to your kernel configuration file, and rebuild the kernel. See similar questions...

It's system-dependent. Under Unix, you typically open, read, and write a device file in /dev, and use the facilities of the terminal driver to adjust its characteristics. (See also questions 19.1 and 19.2.) Under MS-DOS, you can use the predefined stream stdaux, or a special file like COM1, or some primitive BIOS interrupts, or (if you require decent performance) any number of interrupt-driven serial I/O packages. See similar questions...

It allows the application to interface to the GPS receiver through the same interface (commands and logs) as an external controller would through a physical com port. See similar questions...

The serial port is a 9-pin D shaped connector, similar to the video connector except with less pins. Usually, there are two on a PC. One may possibly be in use by the mouse (mainly on older machines). They are also referred to as Com ports or Communications ports. They are identified in Windows as Com1, Com2 etc. Look in the device manager under "ports" and you will see if you have any set up - if not, you may have to enable them in you motherboard's bios via the CMOS setup utility. See similar questions...

Answer: Three serial ports are provided. One can be used for external control from a modem or other serial device. The other ports can connect to managed serial devices (such as routers, PCs, servers, or other RS-232 devices). Port 3 is the default control port. Ports 1 & 2 use the PC standard DTE pinout, with RXD on pin 2, and TXD on pin 3 of the male DB-9. Port 3 has TXD on pin 2, and RXD on pin 3 of the female DB-9. Port 3 offers hardware handshaking; ports 1 & 2 do not . See similar questions...

No, but it is much more convenient. Most ham radio sound card software can control your PTT via a serial port. If your software doesn't have serial control, unlikely, or you don't have a serial port connected, you can use all of the RIGblasters with your radio's VOX. In that mode the sound card audio is fed to your radio and your radio's VOX circuit will activate transmit. See similar questions...

The 10-pin header next to the dip switches is a 2nd serial port. You can hook this up to your PC's serial port (with a null modem), and get connectivity that way, utilizing the 'qtalk' app on the i-opener. This seems to support zmodem, but the i-opener doesn't seem to have the sz/rz binaries. If it did (or if you can find/FTP them), it might make an easy way to transfer files to/from your PC. See similar questions...

Operation in DOS requires 3rd party Card and Socket Services drivers to be properly installed and configured. Follow your software vendor's instructions on how to do this. The Quatech serial CF card itself requires no extra drivers to operate in DOS. Insertion of the card should create a familiar "happy beep" as the host software configures the card as a standard DOS COM port. See similar questions...

quot;Interface Between Data Terminal Equipment and Data Communications Equipment Employing Serial Binary Data Interchange." Every word in the title is significant: it describes the interface between a terminal (DTE) to a modem (DCE) for the transfer of serial data. Short for recommended standard-232C, a standard interface approved by the Electronic Industries Association (EIA) for connecting serial devices. See similar questions...

Unfortunately I can't. The RS232 is only used to provide information to the Sky Gnome, and to take input from the Sky Gamepads. There is no way to control the sky box using it's serial port, but fortunately you can use our range of serial and USB controllers to control your Sky box. See similar questions...