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If the 32 GB storage limit is reached, the system will start overwriting existing RD files, starting from the
oldest first.
Data from other devices can be logged directly onto the xNAV650 with the Generic Ethernet Logging
feature code. LiDAR units with data rates similar to the VLP-16 LiDAR or less are able to log directly
onto the INS. When data is recorded in this way the LiDAR data is recorded as a .lcom file. The data is
stored without ethernet headers so is not identical to a traditional PCAP file. The limit for recording data
can be as high as 5MB/s but 3MB/s is the specification given for reliable operation. This is more than
enough for a VLP16 LiDAR for example but not for a VLP32.
Ethernet configuration
To configure the xNAV650 for unrestricted data transmission it is necessary to use the ethernet
connection. The operating system at the heart of the xNAV650 allows connection to the unit via FTP.
The use of FTP allows the user to manage the data logged to the unit; files can be downloaded for
reprocessing. Configuration files for alternative configurations require FTP to put the configuration files
on to the xNAV650. The default username and password are both “user”.
The xNAV650 outputs its data over ethernet using a UDP broadcast. The use of a UDP broadcast
allows everyone on the network to receive the data sent by the xNAV650. The data rate of the UDP
broadcast is 100 Hz.
Each xNAV650 is configured with a static IP address, to enable communication by ethernet. The default
IP address will have the following format:
192.168.196.1
xx
Where
xx
is the last tw
o digits of the unit’s serial number.
The IP address of the computer being used to communicate with the xNAV650 may need to be changed
so it matches the subnet. For example, 192.168.196.32 should be available since this IP address is
never used by the xNAV650 by default.
Connection details for ethernet configuration
The RJ-45 connector on the 14C0222x user cable is designed to be connected directly to a network
hub. To extend the cable it is necessary to use an in-line coupler. This is two RJ-45 sockets wired
together in a straight-through configuration. Following the in-line coupler, a normal, straight UDP Cat
5e cable can be used to connect the coupler to the hub.
The xNAV can be connected directly to an ethernet card in a computer. To do this a crossed in-line
coupler must be used.
Summary of Contents for xNAV650
Page 1: ...xNAV650 Hardware Manual 20 Years Navigation Experience in one small INS ...
Page 38: ...Oxford Technical Solutions Ltd http www oxts com Page 38 of 42 Appendix 2 Drawings ...
Page 39: ...Oxford Technical Solutions Ltd http www oxts com Page 39 of 42 ...
Page 40: ...Oxford Technical Solutions Ltd http www oxts com Page 40 of 42 Revision history ...
