Raymarine DSM300 - Manual (Page 38)

38 DSM300 Operation with PLUS Series Displays
Sonar Simulator
The simulator enables you to operate your display without data from the
transducer, in order to become familiar with the sounder features and functions.
All controls are functional in Simulator mode with the exception of STC.
Version/Serial Numbers
The area at the bottom of the Sonar Setup screen gives version information for the
system.
This area is informational only; it is not editable.
DISPLAY SW VERSION displays the software version of the display unit.
MASTER SW VERSION displays the software version and product type of the
master unit, which under most circumstances would be the DSM300.
MASTER S/N displays the serial number of the master unit, which under normal
circumstances would be the DSM300.