Operating Instructions and Installation Instructions
78 
Log Sonar Chart Data 
If you have an MMC installed in the unit, the sonar data shown on the 
screen can be saved to the MMC. This can be played back at any time 
(to play a recorded sonar chart log, see the entry in this section for So-
nar Simulator). If you have a personal computer and Internet access, 
visit our web site, www.lowrance.com, and download the free Sonar 
Viewer and the emulator for your unit. These programs will allow you 
to replay sonar logs on your personal computer. 
Sonar Page menu with the Log Sonar Chart Data selected (left). Sonar 
Chart Logging menu (right) with the Start Logging selected. The menu 
says the MMC has 5.42 MB of free space, which will record the scroll-
ing chart for 28 minutes and 44 seconds. 
To record or log chart data: 
1. Press 
MENU|↓ to LOG SONAR CHART DATA|ENT. 
2. To record data using the default settings, press 
ENT. The menu clears 
and the Sonar Page title bar shows the name of the file you are re-
cording. Warning messages will appear as recording time begins to run 
out. 
NOTE: 
You can change any of the settings by using the cursor arrows to 
highlight different commands. Select 
FILE  NAME if you want to 
change the name. Select 
CHART QUALITY if you want to lower the file 
quality and record for a longer period of time. After you've changed 
the settings, select 
START LOGGING and press ENT. 










