CTD-N Technical Manual
P/N 95F-6000-00 (February 2017)
page 19
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Figure 10.
The Communication Properties Dialog Box
Changing the Baud Rate
The default baud rate for the CTD-N and CTDPro is 9600 bits/sec with one stop bit, eight data bits
and no parity. However, you can use CTDPro to change the baud rate at which the computer and
the instrument communicate in the following three ways:
Change the baud rate of the serial port
where CTDPro changes the baud rate of the com-
puter’s serial port to the selected baud rate without affecting the baud rate of the CTD-N.
This allows communications with multiple instruments, each of which have different baud
rates. The baud rates of the instruments must be known.
Automatically change the baud rate of the serial port to the baud rate of the CTD-N
CTDPro automatically determines the baud rate of the instrument and then changes the
baud rate of the computer’s serial port to the same. The baud rate of the instrument is not
changed. This allows communications with the instrument without knowing its baud rate.
Change the baud rate of the CTD-N and the serial port
where CTDPro first changes the
baud rate of the CTD-N to the selected baud rate and then automatically changes the baud
rate of the computer’s serial port to the same. This allows communications with an instru-
ment at any of the available baud rates. The baud rate of the instrument remains changed.
Changing the Baud Rate of the Serial Port
To change the baud rate of the serial port:
1. Choose Start
➤
All Programs
➤
RD Instruments
➤
CTDPro.
CTDPro starts and the CTDPro Main window opens.
2. Choose CTD
➤
Communications
➤
Setup.
The Communication Properties dialog box shown in Figure 10 opens.
3. In the Baudrate area of the Communication Properties dialog box, select the baud rate.
4. Click OK to save the new baud rate selection and close the Communication Properties dia-
log box.