B&B Electronics SL2736-698 - Manual - Manual (Page 21)

November 2011 940-0194-100 21
Quad-port
PC Card with
Ruggedized cables
8510-00158 N/A N/A ALL
Custom PC Card
8010-00074
8510-00088
Rev A Rev B N/A
8010-00095
8010-00096
8510-00119
8510-00121
N/A Rev A N/A
Map Baud Rates
What is baud rate mapping?
Most Windows applications offer baud rate settings only up to 115 kbps, because this is the maximum
speed of typical serial ports. What if you need or want to transfer data faster than 115 kbps? The latest hardware
and software of the Serial I/O Cards were designed to handle much higher speeds, up to 921 kbps. Many Windows
applications can handle speeds higher than 115 kbps, although they do not list any values higher than 115 kbps in
their options for baud rate configuration.
Hi-Speed COM Tools enables you to use your COM port at higher baud rates in applications that only let you
choose a baud rate up to 115 kbps. The program essentially lets you use one of the available baud rate values as a
placeholder for a new baud rate of your choice. This is known as “mapping” a new baud rate to an available baud
rate option.
For example, if you need your device to work at a baud rate of 230,400 bps, most Windows applications will not
list 230,400 bps as a baud rate option. Hi-Speed COM Tools cannot change which options are listed, but it does let
you program one of the options to work at 230,400 bps (e.g., you can change the “300” bps option to actually work
at 230,400 bps).
Note:
Some older applications may have timing issues when you set them to baud rates that are higher than they were
designed for. After mapping a baud rate to a new speed, you can re-map it back to its original speed.
Follow these steps to map baud rates:
Make sure the serial port is not already open on your computer.
In the Card Status section, make sure the correct Card Type is chosen and the correct card is listed.
The Baud Rate Mapping section has a FROM field and a TO field.
The FROM field lists baud rate options available in typical applications. The number that you select in the FROM
field will be the baud rate option that you change to function at a new speed.
The TO field lists the baud rates you can choose from for your new speed. Included in the TO list are baud rates
(e.g., 921,600 bps) that are not available as options in typical applications.
Use the FROM and TO fields to scroll and select the appropriate baud rates. Select Enable and click APPLY.