Vaisala Hydromet Data Collection Platform - Manual (Page 340)

User's Guide ______________________________________________________________________
338 _________________________________________________________________ M210933EN-C
Communication Modules
RS-232 Module DSU232
The unisolated RS-232 module provides either a double serial channel
without handshaking or a single RS-232 with handshaking. In addition,
an optional SDI-12 interface is available.
1007-019 Figure 171 RS-232 Wiring Diagram
1006-123 Figure 172 Suggested T-Connection in Dual Port Mode
For the SDI-12 wiring with the later version, see Figure 178 on page
343 . The SDI-12 data pin is the same as in the dual RS-485 module, and
the same wiring method can be used as in Figure 178 on page 343 .
See Figure 178 on page 343 and Table 74 on page 339 for the SDI-12
jumper of DSU232-C.