The default baud rate after a factory cleanup is 115200 baud. Each serial port can be configured for the RS232 or RS485 protocol, and runs at standard baud rates up to 115,200 bits per second. The PDQ Single Board Computer ( SBC) has two asynchronous serial communications ports named Serial1 and Serial2. Can be used to communicate with other peripheral devices if multi-processing is not required. Used for inter-processor ( IP) communications on multi-processor systems such as the PDQScreen. Each device must have unique hardware chip select signal. Each device must have unique numeric address.ģ-wire multi-drop bus, up to 10 MBaud if SPI bus master, up to 5 MBaud if SPI slave. The RS485 signals are not available on the Docking Panel.Ģ-wire multi-drop bus, up to 100 Kbaud. All signals are also available on the Docking Panel.

Since DSL and cable modems communicate over digital lines, baud rate is irrelevant to these devices.Standard baud rates up to 115.2 Kbaud. Fortunately, newer technologies such as DSL and cable modems offer much faster data transfer rates. Additionally, at such a high baud rate, only seven bits can be sent consistently with each pulse, which is why dial-up modem speeds maxed out at 56 Kbps many years ago. However, reducing the baud rate of a modem may also reduce the maximum data transmission rate.īaud rates above 8000 are not very reliable on analog telephone lines, which is why most modems do not offer higher baud settings. This can be useful if a dial-up ISP requires a specific baud rate for communication. However, many dial-up modems allow you to override the default baud setting and manually enter the baud rate using a software interface. Modems typically select the most efficient baud rate automatically (sometimes called the 'autobaud' setting).

This means they send seven bits per signal transition, since 7 x 8000 = 56,000. 56K modems often use a baud rate of 8000. Therefore, it would only require a baud rate of 2100 (28,800 / 9). For example, a 28.8 Kbps modem may send nine bits per second. However, most modems transfer multiple bits per signal transition. If a modem transfers a single bit per electronic pulse, one baud would be equal to one bit per second ( bps). While the term was originally used to measure the rate of electronic pulses, it has also become a way to measure data transmission speeds of dial-up modems. For example, if a signal changes (or could change) 1200 times in one second, it would be measured at 1200 baud. Baud, or baud rate, is used to describe the maximum oscillation rate of an electronic signal.

What is baud rate