Vaisala Hydromet Data Collection Platform - Manual (Page 210)

User's Guide ______________________________________________________________________
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Null Modem
Null modem is not a physical communication device, but a commonly
used name for a cross-connected RS-232 cable for interconnecting two
computers.
To include this component to setup, add the device NullModem-IP or
WinNullModem-IP as shown in
Figure 89 on page 208 . Note that for
a direct cable connection to a Windows PC, the device to use is
WinNullModem-IP.
0710-056 Figure 89 Null Modem Configuration
NOTE There are no station-specific parameters associated with the null
modems. A power control component is included, but usually there is
no real need for it.