User’s Guide ______________________________________________________________________
76 __________________________________________________________________ M211840EN-C
Service Cable Connection
The USB Service Cable has a 4-pin M8 connector for Service Port. The
service cable connection is recommended for checking and changing
device settings. When making the changes, use the Vaisala
Configuration Tool or a standard PC terminal program.
Figure 36 Service Cable Connection
The USB service cable is included in the Service Pack 2, see Table 41
on page 180. For a picture of the service cable, see Figure 9 on page 24.
When you connect the USB service cable between the service connector
and PC USB port, the service port settings are forced automatically to
RS-232 / 19200, 8, N, 1, and the main serial port at the M12 connector
at the screw terminals is disabled.
1. Use the USB service cable to establish a connection between the
USB port of your PC and the M8 service port connector on the
bottom plate of the transmitter. See Figure 8 on page 23.
2. Open the Vaisala Configuration Tool, or a terminal program.
3. Select the COM port reserved for the USB cable, and select the
following default communication settings:
19200, 8, N, 1.
4. Use the Vaisala Configuration Tool or a terminal program to make
the configuration changes. When working with a terminal
program, see Communication Setting Commands on page 78.
5. When removing the service cable, support the transmitter while
pulling the 4-pin M8 connector for service port. The connection is
tight, and it is possible to change the alignment of the transmitter if
you pull too hard.
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