Vaisala PTU300 - Manual (Page 85)

Chapter 4 _________________________________________________________________ Operation
VAISALA ________________________________________________________________________ 83
data transfer, since the bit rate is limited by the serial interface of the
service port.
Installing the Driver for the USB Cable
Before taking the USB cable into use, you must install the provided USB
driver on your PC. When installing the driver, you must acknowledge
any security prompts that may appear.
1. Check that the USB cable is not connected. Disconnect the cable if
you have already connected it.
2. Insert the media that came with the cable, or download the latest
driver from
www.vaisala.com .
3. Execute the USB driver installation program (setup.exe), and
accept the installation defaults.
4. After the driver has been installed, connect the USB service cable
to a USB port on your PC. Windows will detect the new device,
and use the driver automatically.
5. The installation has reserved a COM port for the cable. Verify the
port number, and the status of the cable, using the Vaisala USB
Instrument Finder program that has been installed in the
Windows Start menu.
Windows will recognize each individual cable as a different device, and
reserve a new COM port. Remember to use the correct port in the
settings of your terminal program.
Using the Service Port
1. Open the screws on the transmitter cover, and open the cover.
2. Connect the desired cable (serial interface cable or USB cable) to
your PC and the service port connector on the transmitter. For the
location of the service port, refer to Figure 49 on page 81.
3. Open a terminal program and set the communication settings as
follows:
Table 17 Communication Settings for the Service Port
Parameter Value
Bauds 19200
Parity None
Data bits 8
Stop bits 1
Flow control None
For a detailed explanation of using a terminal program, see section
Terminal Program Settings on page 91.
4. Power-up the PTU300.