Furuno gd-1700c Manuel D’Utilisation

4. VIDEO SOUNDER OPERATION 

 
 

The VRM functions to measure the depth, and the time cursor measures time. 
 
1.  Rotate the [ENTER] knob to shift the VRM; counterclockwise the shift it 

downward, clockwise to shift it upward. You may also use the cursor pad to 
shift the VRM, in which case use ▲ or ▼.  

2. Use ◄ or ► on the cursor pad to shift the cross-hair cursor to measure the 

elapsed time. 

Depth to VRM 

Cross-hair
cursor

LF

50

0

100

-

-

-

-

-

-

-

-

-

-

28.8

0'33"

Time to cursor intersection
(Max. 99'59")

VRM
 

 

 If, when the range setting is over 1000 ft (m, fa, p/b), the VRM indication 

and depth scale may overlap one another, shift the cross-hair cursor 
slightly to show them completely. Further, when the display is shifted, the 
depth scale may obscure the time indication.