NorthStar Navigation NorthStar 8000i - Manual (Page 121)

Northstar 8000i Operation Manual 121
2. Select Setup from the control panel.
3. Select
+ Sounder to display a list of sounder specification options.
4. The
Sounder Speed Offset button shows the current setting.
Select Edit, then enter the difference between the displayed speed
and the actual speed.
5. The new setting is applied immediately to all the Sounder screens.
6. When you are finished, select – Sounder.
19.5 Change the sounder's speed filter
The transducer usually displays a speed readout every two seconds.
If you'd prefer to see the readout averaged out over a different time period, use
the speed filter offset to specify the time period.
To change the speed offset:
1. Select
Display.
2. Select Setup from the control panel.
3. Select
+ Sounder to display a list of sounder specification options.
4. The
Sounder Speed Filter button shows the current setting.
Select Edit, then enter the difference between the displayed speed
and the actual speed.
5. The new setting is applied immediately to all the Sounder screens.
6. When you are finished, select – Sounder.
19.6 Change the zoom range
This works only on a sounder split zoom screen. The depth line must be On.
The zoom range is the vertical extent of the zoomed area. The depth line in the
right hand pane is always at the center of the zoomed area.
The depth line is also shown in the center of the zoomed screen, with the actual
depth shown in numbers.
The numbers at the top and bottom of the zoomed screen show the actual depths
of the zoomed area.
You can increase or decrease the zoom range, but remember that the best
magnification is achieved over a small vertical extent.
To change the zoom range:
1. If you can't see the Range, Zoom, and Split button, select
Return.
2. Select
Range, Zoom, and Split.
3. The
Zoom Range button, and the sounder zoom screen, show the
current setting. Select the button if you want to change the setting.
4. Select either: