Quark-elec Manual
15 of 21
2019
V1.0
7.4. Configuring Routing and Filtering
Figure 10 Routing &Filtering
The A033 features filtering and routing.Specific input data can
filtered
out and ignored by the
multiplexer, remaining wanted data can then be
routed
to specific outputs.
Filtering options:
Each input also has a flexible filter that can be configured to pass or block specific
sentences from entering the multiplexer. This frees up bandwidth, significantly reducing the possibility
of data overflow and resulting loss of data
Routing options:
The powerful routing feature allows the remaining NMEA, SeaTalk and WiFi input
data to be routed from any input and limited to the desire outputs.
Filter and routing allows the A033 reduce the processing data load by disabling these unneeded input
sentences from specific NMEA outputs. GPS receivers for example often transmit an abundance of
sentences every second and can fill much of the available bandwidth of an NMEA 0183 port at
4800bps. By filtering out any unnecessary data, bandwidth is saved for other devices’ data.
It also solves the conflict in the case where two similar NMEA devices provide the same types of
sentences. Operators may chose to enable this data on one input only (filtering), and/or to route each
input to a specific output(routing).
7.4.1. Filtering: Black list setup
Each input port’s black list can block up to 8 types sentences.
Most of Chart plotters have their own sentence filter, however for most PC/mobile phone based
applications, this is not the case. So using the black list to filter un-necessary sentences is very helpful.
Remove the ‘$’ or ‘!’ from the 5 digit NMEA talker and sentence
identifier and insert separated by commas.
For example to block ‘!AIVDM’ and ‘$GPAAM’ enter ‘AIVDM,GPAAM’.
If blacklisting SeaTalk data, the corresponding NMEA message header
should be input (see SeaTalk section for a full list of converted
messages).
7.4.2. Routing data away from chosen outputs
As a default, all inputs’ data (excluding any filtered data) is routed to all
outputs (NMEAx2, WiFi and USB). Data can be routed to limit the data flow to
only certain output/s.
