Vaisala WMS302 Betriebsanweisung PDF herunterladen (Seite 35)

Chapter 2 __________________________________________________________ Product Overview

VAISALA_______________________________________________________________________ 33

Modem Module

The DMX501 modem module is used for providing long distance fixed

line connection between two Vaisala devices with a similar interface. It

is used when the distance is up to 10 km, for example, between MAWS

and Digital Display, or between Ceilometer CT25K and MAWS.

Through this I/O port, a remote location can send reports and data or the

host can poll them. The DMX501 modem module must be configured

before using it so that it works as desired.

0306-013

Figure 17 Modem Module DMX501

The DMX501 modem module supports the following communication

standards:

- V.21, 300 bps FSK

- V.23, 1200 / 75 bps FSK

- V.22, 1200 bps DPSK

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Vaisala WMS302 Betriebsanweisung Seite 35