Campbell RWIS STATIONS, Инструкция по эксплуатации

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RWIS Stations
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If there is a time that the station is called but the authentication fails, the
NL110 is hung and needs to be reset. This can done locally by using the
NL110 configuration menu, or by programming a control port to power rest the
modem on a regular interval. The control port is wired to the SW12V ctrl, and
the NL110 is powered by the SW12V of the CR10X-2M.
If there is a time that the phone lines are good but the connection rings busy,
the modem could be hung and needs to be reset. This, too, can be managed by
a power reset with the modem also being controlled by the SW12V.
Connection speeds for telephones are also a concern in that speeds less that
about 16kb are not practical for image retrieval. Since the modem connects to
the serial port of the NL110 and the maximum speed of the serial port is
33.6kb, a modem with at least that speed is needed. Experience has shown that
with speeds less than about 16kb, FTP times out and there is no image sent.
Possible configurations
There are two verified ways to connect to the RWIS station.
The first is phone modem to NL110. Using the setups described in earlier
sections reliable communication is accomplished.
The second is phone modem to RF400 to NL110. In this case, a null modem is
needed for connection to the base RF400 and the modem. On the logger side a
straight cable is used to connect the RS-232 port of the RF400 to the RS-232
port on the NL110.
Setups for the RF400s are all default with the following exceptions.
Active interface – rs232
Baud rate 38.4 kb
RF_ON 24ma
Programming
There are some requirements of ESS-1204 that require special consideration
for the CR10X-2M. They are text and large numbers. Large numbers are