Measuring Depth, Time - Furuno GP-7000F Operator's Manual

10. VIDEO SOUNDER OPERATION
10.4

Measuring Depth, Time

The VRM measures the depth and the time marker, time.
1. Rotate the [ENTER] knob to shift the VRM; counterclockwise to shift it
upward, clockwise to shift it downward. You may also use the cursor pad
(▲▼) to shift the VRM.
2. Press the cursor pad (◄►) to adjust the time marker to measure time.
10-12
Depth to VRM
Time for a scan line to travel
from the right edge of the
display to the cross-hair cursor
0'33"
40.0
Time marker
97
ft
50k
How to measure depth and time
0
VRM (white)
50
100