The baud rate is specific of a given serial instrument.
But this is not the only parameter to be configured. You also have byte width (7 or 8), parity (even, odd, none), number of stop bits, harware protocol and so on...
Most often, the "standard" baud rate is 9600, 8 data bits, even or none parity, 1 stop bit.
You should have a notice somewhere (possibly on the web...) which explains the settings of these parameters for your instrument.
Chilly Charly (aka CC)