"WBH" wrote in
:


"Larry" wrote in message
...
| "WBH" wrote in
| :
|
| The only way to resolve
| this is to use a device which can 'convert' the baudrate from 38400
| to 4800 bps
|
| Wouldn't this soon be overrun with data pouring in at 38400 and
| dripping out at 4800? If there's a lot of AIS targets, is 4800 fast
| enough to keep the converter memory from being overrun??
|


The "baudrate conversion" is for the data stream coming FROM the
C-series (or E-series). This data stream does not contain AIS data. I
agree that potentially there is always the risk that if you input NMEA
data at 38400, 4800 will not provide enough bandwidth to output that
same data, but the C-series output is GPS and instrument data and the
total volume is unlikely to exceed the 4800 bandwidth. The
multiplexer's buffering takes care of the input volume peaks that may
occur. Also, if the baudrate conversion input port receives a full
data stream including AIS, the Brookhouse multiplexer automatically
filters out that AIS data for the same reason. This situation does not
normally occur if connected to a C or E-series, but Brookhouse
multiplexers have several baudrate conversion options and one of them
(option 3) involves feeding the full data stream into the baudrate
conversion input buffer. The purpose of this is that the NMEA data is
also available at 4800 bps to feed standard (4800) listeners. In this
case the AIS data is filtered out automatically. Read more he
http://www.brookhouseonline.com/pdf%...nversion%20Opt
ions.pdf

Wout



Thanks. Too bad there's no computing that could parse it.