IMAGENEX 881A-GS, Руководство пользователя

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881A/L-GS Scanning Sonar
Doc No: 430-044-00 Page 20 of 46
Ref Description
1
Display current acoustic range and frequency of sonar in yellow. Displays grid scale and current gain in
orange. Gyro enabled / disabled in green.
2 Displays only when Gyro Stabilized Image is enabled. One of: North Up, Heading Up, or Target Steering.
3 Displays “Not Recording” or “Recording...”
4
Displays “No Connection” when communication to the sonar is interrupted. Steps between IP address and
connection status (If 881L-GS used).
5 Quick setting for sonar range and gain (if Gyro Enabled selected).
6 Current transducer position for the “ping”.
7 and 8
Sonar position indicator:
The yellow circle indicates the current sonar unit heading independent of the transducer position.
In North Up mode, the circle will remain at the heading of the sonar unit. It will rotate around the perimeter
of the sonar image which remains stationary in a North-up orientation.
In Heading Up mode, the circle will remain stationary at the top of the screen, while the sonar image
rotates.
In Target Steering mode, the circle will transverse around the perimeter of the sonar image which remains
stationary. Used in conjunction with Acquire Target (see 9 below)
9
Gyro Stabilized Image mode selection
If Target Steering Mode selected, the user can Acquire Target which allows the user to select a target
location. The scanning sector will then be centred on the selected target and rotated to place the target at
the top of the display. (See 2.3.5 Acquiring Targets below for details).
Table 6 Reference Table
2.3.5. Acquiring Targets
The 881A/L-GS has the ability to select a target of interest and automatically centre on and scan about this target
on screen. The procedure is as follows:

Ensure the gyro is enabled and in “Target Steering” mode. The sonar will perform a full polar scan.

Select the button “Acquire Target”. The mouse cursor will change to

Select desired target on screen. The screen will automatically change to a top sector view, sector size
defaults to 120° and the target is centred within the sector: