Measurement Computing RS232 to USB Interface User Manual
Page 2
*325028A-01*
325028A-01
Measurement Computing, 10 Commerce Way, Norton, MA 02766
phone: (508) 946-5100;
email: [email protected]
Printed in Hungary
446-0941
rev
1.0
1. Connect the single DB9 end of a CA-47 serial communication cable to
the Serial Port on your data acquisition device.
2. Connect the CA-47 cable to the CA-271 converter cable.
3. Connect the CA-271 converter cable to a USB port on the host PC.
4. In the Device Manager check under Ports (COM & LPT) for the new port;
for example, USB Serial Port (COM3) as seen in Figure 1. If you see the
new port your installation is complete.
Figure 1. The USB Serial Port (Correct)
Some computers will not initially create the USB Serial (COM) as shown in Figure 1
. If this is the case with your system
you will see a new “USB Serial Converter” under Universal Serial Bus Controllers as in Figure 2 and will need to follow the
additional steps below.
The following steps are to be followed only if your system did not
1. In the Device Manager, right click on the USB Serial Converter (Figure 2.) A pop-up menu will appear (Figure 3).
provide a USB Serial Port (COM) as in Figure 1.
Figure 2. USB Serial Converter (Incorrect)
Figure 3. Selecting Properties for USB Serial Converter
2. Left click on the Properties (Figure 3). A USB Serial Converter Properties dialog box will appear (Figure 4).
3. Select the Advanced tab and check the “Load VCP” box (Figure 4).
Figure 4. Checking “Load VCP” in the Advanced Tab
Figure 5. USB Serial Port (COM) The desired result.
4. Disconnect the CA-271 from the PC’s USB port; then reconnect it.
5. Go back to the Device Manager. You should now see the new USB Serial Port (COM), as in Figure 5.
The installation is complete.
Note: The CA-47 cable has three connectors. Only the two DB9 connectors are used.
The CA-271, like the RS-47 cable, is part of RS-232 to USB Interface Adapter Kit
(CA-232-USB-KIT). Neither item is included in the base device hardware package.