Davis Vantage Pro2 用户手册

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页码 32
Finding the Correct Serial Port
28
Finding the Correct Serial Port
The software includes a procedure for locating the serial port to which your 
station is connected or determining whether that serial port is working. Using 
the Loopback command (as opposed to Test) will help you find the correct 
port and determine whether the serial port or the data logger is causing a com-
munication problem. The loopback function will also detect and report the 
presence of any modems.
To use this procedure, you will need the loopback connector (the 
short cable with a phone jack on one end and a red plastic tip on 
the other) supplied with Weatherlink.
1. If necessary, disconnect the cable between your station and the 
adapter connected to the COM port.
2. Insert the loopback connector into the adapter. 
3. Select Communications Port from the Setup menu.
The Communications Port dialog box displays.
4. Click Loopback.
The software searches all standard serial ports and inform you of the COM 
port at which the loopback connector is located.