Leased line modem, Figure 2 – Vaisala Hydromet Data Collection Platform User Manual
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Chapter 2 __________________________________________________________ Product Overview
VAISALA_______________________________________________________________________ 31
Leased Line Modem
0505-261
Figure 2
Leased Line Modem
The leased line modem is intended for weather stations and other
systems. The operation mode and settings are selectable with the DIL
switch and jumpers. The leased line modem module can be used to
connect the weather station to the leased line 2-wire or 4-wire point-to-
point or multi-point application.
The module supports standards such as V.21 300/300 bps FSK, V.22
1200/1200 DPSK, and V.23 1200/1200 bps FSK.
The module has a small enclosure with DIN-rail mounting support that
can be connected into various enclosures. It has face connectors where
the power supply, RS-232, and leased line can be connected.
When connecting a leased line modem to the QML logger, you need to
use the terminal strip to provide power for the modem. For the example
wiring diagram, see