Using live viewing

Echoview detects and lists Echolog applications running on the network in the Live viewing dialog box . On the Shortcut menu (right-click) of the Live viewing dialog box, you can start live viewing or stop live viewing from a listed Echolog application. Echoview can manage one live viewing EV file for each Echolog application listed and any number of non-live viewing EV files.

Live viewing ceases when:

the EV file for live viewing is closed or Echoview is closed
the Echolog application is closed (on closing, the Echolog application is removed from the list within the Live viewing dialog box)
Echoview can not communicate with the Echolog application e.g. one of the above situations occur or a machine/network failure occurs
Stop live viewing is selected on the Shortcut menu of the Live viewing dialog box.

Note: If a paired Echosim application is stopped while the Echolog application continues, the display of live viewing data pauses in Echoview. The display of live viewing data resumes when the Echosim application is restarted.

The following sections describe the use of live viewing in Echoview:

Access shared directories when live viewing

Displaying variables automatically

EV file management

Live viewing templates

Live viewing data in 2D

Live viewing data in 3D

Access shared directories when live viewing

Echoview's Echolog applications facilitate live viewing by reading echosounder (output) data files and sending the data to Echoview for display. The About Echolog and Using Echolog pages discuss the use and setup of the Echolog modules.

The live viewing feature can provide an additional monitoring station on a ship. To set this up, configure the sharing of directories or folders on the network with the device (laptop or similar) that runs Echoview live viewing.

Live viewing file sharing

Configuration issues may include:

the ship's network firewall (consult the ship's network system administrator)
the device's firewall (consult the device's system administrator)
the sharing settings of echosounder data files in the network's "survey" folder so that the Echolog application can access them

Echoview and Echolog applications run under Microsoft Windows systems. When logging and live viewing on different computers you can experience sharing difficulties. Specifically, on the live viewing computer you may see a message saying that Echolog is running but the folder is not shared. To set up sharing settings on the logging computer:

(On the device hosting the Survey folder) Browse to the Survey folder using Windows Explorer.
Share the folder (the process differs depending on XP or Vista/7 see table below).
Test the share by browsing to \\yourcomputername\sharefoldername in Windows Explorer with the device that runs Echolog.
If it works, update Echolog's survey folder to the same folder location as Step 3.
Live viewing on the remote computer should now work.

Microsoft Windows folder sharing settings

Microsoft Windows operating systems support the sharing of folders (and the files in them). You can configure Windows settings so that computers can see each other and access shared folders. This involves mapping a network drive and sharing a folder or folders. Microsoft disseminates topics dealing with file sharing techniques.

Operating system	Information
Windows 2000	How to share files and folders over a network for Workgourps in windows 2000
Windows XP	How to use the Simple File Sharing feature to share files in Windows XP
Windows Vista	Windows Vista File sharing essentials Networking home computers running different versions of Windows File and printer sharing: frequently asked questions
Windows 7	Windows 7 File sharing essentials
Linux/Unix servers and Windows based clients	(Open source) Samba application

Displaying variables automatically

Echoview can be configured to automatically display variables when Echolog starts or alternatively, to enable you to select the variables to be live-viewed.

To setup Echoview to automatically display variables when Echolog is detected:

On the File menu, choose Configuration.
On the Echoview Configuration dialog box, click the Live Viewing tab.
Select the Bypass Live Viewing Variables dialog box option.
Select the variables you want displayed automatically whenever Echolog starts.
Click OK.

To setup Echoview to enable you to select which variables to display when Echolog is detected:

On the File menu, choose Configuration.
On the Echoview Configuration dialog box, click the Live Viewing tab.
Clear the Bypass Live Viewing Variables dialog box option.
Click OK.

An EV file will be automatically created and named and the chosen echograms displayed. EV files created from Echolog logging data are by default named: Live Viewing - hhmm dd MMM yyyy-ComputerName.EV

Note: You can disable live viewing by selecting the Bypass Live Viewing Variables dialog box option on the Live Viewing Page of the Echoview configuration dialog box and clearing all variable types. If you choose not to display any live viewing variables when Echolog is detected, you will need to restart Echoview (and possibly change the Configuration settings) to enable live viewing.

EV file management

Echoview provides the option of automated EV file management during live viewing. This feature creates a multiple smaller EV files and data files rather than a single, potentially huge EV file. You enable automated EV file management and enter related settings on the Live Viewing page of the Echoview configuration dialog box.

Warning: If automated EV file management is not enabled, the file(s) being logged will continue to grow until they exceed available memory and Echoview will eventually crash as a result. Myriax strongly recommends you enable automated EV file management and that you enter settings that limit file size to that level that will not exceed the memory available on the logging computer.

Live viewing templates

If a live viewing template has been created Echoview will display windows in live viewing with the display and processing settings saved in the template. Echoview will also create any virtual variables in the live viewing EV file that have been created in the template file.

To create a live viewing template:

Create or open an EV file using data files of the same type as the files you will be live viewing (for example, use .ek5 files if you are going to live view with Echolog 500).
Adjust EV File Properties and Variable Properties as required.
Create virtual variables if required.
Save the EV file to the Live Viewing templates folder.

You must name your live viewing template file correctly or it will not be applied to your live viewed data:

If you are using Echolog 500 and viewing .ek5 files then the live viewing template must be named default-500.EV or computername-500.EV.
If you are using Echolog 60 to live view .RAW data files directly from an Ex60 echosounder (that is, you do not have data compression enabled) then you must name the live viewing template default-60-RAW.EV or computername-60-RAW.EV
If you are using Echolog 60 to live view compressed data in the .EK60 data format then you must name the live viewing template default-60-EK6.EV or computername-60-EK6.EV
If you are using Echolog SM to live view uncompressed raw or beamformed data files directly from an SM2000 FR (that is, you do not have data compression enabled) then you must name the live viewing template default-SM.EV or computername-SM.EV
If you are using Echolog SM to live view compressed data in the .SM2000 data format then you must name the live viewing template default-SM-comp.EV or computername-SM-comp.EV

See Using live viewing templates for further details.

Live viewing data in 2D

All echograms, (selected) editable lines, rectangular selections, schools detection, classification after schools detection, linked graphs and cruise tracks which are affected by data which arrives during live viewing will be updated automatically. Also available is a user-defined keyboard shortcut to create a marker region for the last ping.

Live viewing data in 3D

3D cruise tracks and echogram curtains with the Live update option set which are affected by data which arrives during live viewing will be updated automatically.