Firmware
There are three versions of the Trawl Explorer. Each version has a different firmware (called NBTE) and different features.
NBTE V1 | NBTE V2 | NBTE V3 | |
---|---|---|---|
Name of firmware | FIRM121 | FIRM126 | FIRM128 |
Autorange feature | no | yes | yes |
Target strength on echograms | no | no | yes |