Garmin GPSMAP 1000 Series, Owner'S Manual

You can indicate which frequencies appear on the sonar screen.

1

From a sonar view, select 

MENU

 > 

Frequency

.

2

Select a frequency suited to your needs and water depth.
For more information on frequencies, see (

Sonar 

Frequencies

, page 27

).

Creating a Frequency Preset

NOTE: 

Not available with all transducers.

You can create a preset to save a specific sonar frequency, 

which allows you to change frequencies quickly.

1

From a sonar view, select 

MENU

 > 

Frequency

.

2

Select 

Manage Frequencies

 > 

New Preset

.

3

Enter a frequency.

Turning On the A-Scope

NOTE: 

This feature is available in the Traditional sonar views.

The a-scope is a vertical flasher along the right side of the view, 

showing you what is underneath the transducer right now. You 

can use the a-scope to identify target returns that may be 

missed when the sonar data is quickly scrolling across the 

screen, such as when your boat is moving at high speeds. It can 

also be helpful for detecting fish that are close to the bottom.

The a-scope above shows fish returns 

À

 and a soft bottom 

return 

Á

.

1

From a sonar view, select 

MENU

 > 

Sonar Setup

 > 

Appearance

 > 

A-Scope

 > 

On

.

2

Select a hold time.
You can increase the hold time to increase the length of time 

the sonar returns are displayed.

Panoptix Sonar Setup

Adjusting the RealVü Viewing Angle and Zoom Level

You can change the viewing angle of the RealVü sonar views. 

You can also zoom in and out of the view.

From a RealVü sonar view, select an option:
• To adjust the viewing angle diagonally, select 

.

• To adjust the viewing angle horizontally, select 

.

• To adjust the viewing angle vertically, select  .
• To adjust the viewing angle, swipe the screen in any 

direction.

• To zoom in, spread two fingers apart.
• To zoom out, pinch two fingers together.

Adjusting the RealVü Sweep Speed

You can update how quickly the transducer sweeps back and 

forth. A faster sweep rate creates a less detailed image, but the 

screen refreshes faster. A slower sweep rate creates a more 

detailed image, but the screen refreshes more slowly.

NOTE: 

This feature is not available for the RealVü 3D Historical 

sonar view.

1

From a RealVü sonar view, select 

MENU

 > 

Sweep Speed

.

2

Select an option.

LiveVü Forward and FrontVü Sonar Menu

From the LiveVü Forward or FrontVü sonar view, select MENU.

Gain

: Controls the level of detail and noise shown on the sonar 

screen.
If you want to see the highest intensity signal returns on the 

screen, you can lower the gain to remove lower intensity 

returns and noise. If you want to see all return information, 

you can increase the gain to see more information on the 

screen. This also increases noise, and can make it more 

difficult to recognize actual returns.

Depth Range

: Adjusts the range of the depth scale.

Allowing the device to adjust the range automatically keeps 

the bottom within the lower portion of the sonar screen, and 

can be useful for tracking a bottom that has minimal or 

moderate terrain changes.
Manually adjusting the range enables you to view a specified 

range, which can be useful for tracking a bottom that has 

large terrain changes, such as a drop-offs or cliffs. The 

bottom can appear on the screen as long as it appears within 

the range you have set.

Forward Range

: Adjusts the range of the forward scale.

Allowing the device to adjust the range automatically adjusts 

the forward scale in relation to the depth. Manually adjusting 

the range enables you to view a specified range. The bottom 

can appear on the screen as long as it appears within the 

range you have set. Manually reducing this option can reduce 

the effectiveness of the FrontVü Alarm, reducing your 

reaction time to low depth readings.

Transmit Angle

: Adjusts the focus of the transducer to the port 

or starboard side. This feature is available only with RealVü 

capable Panoptix transducers, such as the PS30, PS31, and 

PS60.

Transmit

: Stops the active transducer from transmitting.

FrontVü Alarm

: Sets an alarm to sound when the depth in front 

of the vessel is less than the specified value (

Setting the 

FrontVü Depth Alarm

, page 28

). This is available only with 

Panoptix FrontVü transducers.

Sonar Setup

: Adjusts the setup of the transducer and the 

appearance of the sonar returns.

Edit Overlays

: Adjusts the data shown on the screen 

(

Customizing the Data Overlays

, page 3

).

Setting the LiveVü and FrontVü Transducer Transmit Angle

This feature is available only with RealVü capable Panoptix 

transducers, such as the PS30, PS31, and PS60.
You can change the transducer transmit angle to aim the 

transducer at a particular area of interest. For example, you 

might aim the transducer to follow a bait ball or focus on a tree 

as you pass it.

1

From a LiveVü or FrontVü sonar view, select 

MENU

 > 

Transmit Angle

.

2

Select an option.

Setting the FrontVü Depth Alarm

 WARNING

The FrontVü depth alarm is a tool for situational awareness only, 

and may not prevent groundings in all circumstances. It is the 

obligation of the vessel operator to ensure safe operation of the 

vessel.

This alarm is available only with Panoptix FrontVü transducers.
You can set an alarm to sound when the depth is below a 

specified level. For best results, you should set the bow offset 

when using the front collision alarm (

Setting the Bow Offset

, 

page 29

).

1

From the FrontVü sonar view, select 

MENU

 > 

FrontVü 

Alarm

.

2

Select 

On

.

28

Sonar Fishfinder