Trawleye dialog box
You can program the TrawlEye to suit your operational needs or read the configuration it has with its relevant configuation dialog box.
How to open
The PX Configurator starts a “wizard” that permits you to select the specific sensor you want to configure.
Image
Note
The image above may not show real values. It has only been included for illustration purposes.
Description
The PX TrawlEye provides a real time echogram from the trawl using a wireless link. When you configure a PX TrawlEye sensor, you can select key parameters related to its echo sounder, check its battery status or even configure some special features like the learn mode. The parameters in the Trawleye dialog box vary depending on the software version of the sensor connected.
Details
Read Sensor
You may prefer to check first the existing configuration of the selected sensor. Select Read Sensor so that the sensor can “send” its information to the computer. Prior to read the sensor’s data, the communication between the computer and the sensor must have been established.
Select Gear
Depending on the fishing scenario, you may prefer to use one or another gear setup, with the sensors placed in a different position or with different readings. You can configure your catch monitoring sensor to fit into different fisheries and types of gears. When you select the type of gear you are going to work with, the illustration changes accordingly.
Select Location
The gear illustration will show an orange dot indicating where the selected sensor can be placed. Click in the illustration to specify where the current sensor shall be located. The gear illustration will show an icon in the shape of a sensor indicating where the sensor is located. The selection you make here may affect the measurements offered by the sensor.
Screen Capture
Select Screen Capture to make a copy of the entire display presentation. Each screen capture you make is saved in .jpg format on the computer hard disk.
Channel
All sensors are provided by Kongsberg Maritime with predefined communication channels. The default value is shown with an asterisk. It may be required to change one or more communication channels, and there may be many reasons for this.
•  You have more than one of each sensor. For example, if you have three temperature sensors, they MUST communicate on three different channels.
•  Other vessels near yours use the same catch monitoring system (or similar) and they have one or more of their sensors set up to the same communication channels as you have. This will create interference as you will “read” other sensors.
Output Power
A high output power may also provide added range capacity. The higher the power output, the lower the battery capacity.
Vertical resolution
You can control the vertical resolution of the echogram. The vertical resolution of a PX TrawlEye is related to the number of vertical “pixels” sent from the sensor for each ping. By default, the value is “High”.
Update Interval
This value specifies at what time interval the update is to be done. The default value is shown with an asterisk.
Range
The Range parameter defines how “far” you want the TrawlEye to detect echoes. The range is defined from a selected start range, and down to a value less than the current bottom depth or a distance in horizontal direction in the water. The default value is shown with an asterisk.
Pulse Duration
The Pulse Duration setting specifies the current duration ("length") of the transmitted pulse. The duration ("length") of your transmitted pulse is very important to how you can detect fish.
•  A short pulse duration gives you a very fine vertical resolution.
•  A long pulse duration throws a lot more energy into the water, and the digital filters used by the receiver are narrower.
TVG
The purpose of the TVG compensation is to make targets of the same size produce echoes of the same size, regardless of the range. Time Variable Gain (TVG) is applied to the echo signals before they are displayed. The PX Configurator system can work with several different TVG compensation settings.
When an acoustic pulse is sent through the water, it will gradually lose its energy. The greater the distance between the transducer and the target(s), the greater the loss of energy. Signals received from long ranges are amplified to compensate for losses due to geometric spread and absorption. By means of algorithms, the time variable gain compensation converts the echo presentation as a function of range. This makes the targets with the same strength appear with the same intensity independent of their physical distance from the transducer. The TVG compensation is expressed as a logarithmic curve.
Gain
A higher gain allows you to detect smaller targets but will also increase the bottom and footrope echoes or any other noise.
Offset
Offset can be very useful if you are more interested on details from, for example, the centre of the trawl and down to the bottom rather than the whole trawl opening. Instead of having the echogram starting from the sensor, you make it start from a distance from the sensor. This parameter will help you focus on the part of the trawl that is most important for you.
Priority
Selecting Priority will allow the selected measurement to be transmitted after every other measurement.
Note
This parameter is not available if you configure a sensor with software version prior to: 2.14
Roll
The standard version of the sensor is provided with built-in roll and pitch sensors so that you can verify that the sensor is aligned correctly. When enabled, the sensor will send the requested measurements.
Pitch
The standard version of the sensor is provided with built-in roll and pitch sensors so that you can verify that the sensor is aligned correctly. When enabled, the sensor will send the requested measurements.
Battery status
The PX TrawlEye sends up its battery status. This allows you to plan when to charge the sensor. The operational duration of the battery depends on the output power and the update rate values. When enabled, the sensor will send the requested measurements.
Depth
When equipped with a Depth/Temp. lid, the sensor can measure Depth and Temperature.
Geometry differential
This parameter is not available if you configure a sensor with software version prior to: 2.14
Learn mode
Before configuring the PX TrawlEye sensor for your operating needs, you can test different settings. This will help you save a lot of operative time and will make you obtain accurate data right from the beginning. If Learn mode is enabled the PX TrawlEye sensor will run through the learn parameters you select for the ping-period you select in the ping interval.
Enable (Learn mode)
Select to enable o disable the Learn mode.
Note
This parameter is only available if you configure a sensor with a software version prior to: 2.14
Learn parameter 1
Select the first of the two parameters you want to analyse from the list provided
Learn parameter 2
The list shows the available choices but the one selected as Learn Parameter 1.
Ping Interval
The Ping Interval function permits you to choose the time (in milliseconds) between each transmission ("ping").
Program Sensor
Once you have defined the settings and measurements, select Program Sensor to apply them to the sensor you are configuring.
Non editable information about the sensor
Every sensor has some unique settings. The information “read” from the sensor is shown in grey colour and cannot be edited.
FPGA Version
The field-programmable gate array (FPGA) version is unique for every sensor. This number identifies the sensor and its electronics.
PCB Serial Number
The printed circuit board serial number is unique for every sensor. This number identifies the sensor and its electronics. The serial number facilitates identification for later reparations. If you want to unlock more measurements of your sensor, you need the PCB serial number.
Software Version
This number shows the current software version of the selected sensor. All catch sensors with a software (SW) version higher than 2 can make up to eight measurements.
Battery charge state
When working with wireless sensors, it is vital to know the current level of battery.
Battery temperature
In order to check the performance of the sensor or any potential problem, the temperature of the battery will help diagnostics.
Lid Type
Some sensors can give different measurements depending on the type of lid they have.
Pitch and roll readouts
The standard version of the sensor is provided with built-in roll and pitch sensors so that you can verify that the sensor is aligned correctly. To verify that the roll and pitch sensors inside your sensor are operational, simply lift and move the sensor. The information in the two fields will change accordingly.