User manual SIMRAD PI SEINESOUNDER TRAWLERS QUICK REFERENCE GUIDE REV B

[. . . ] Quick reference guide Simrad PI SeineSounder for trawlers Purpose The Simrad PI SeineSonder does two jobs at the same time. From its position on the trawl's headrope it will measure the depth from the sea surface and the height over the seabed. Daily operation A Once installed and put to use, the sensor will automatically be switched on once the waterswitch (the SHORT bolt) is activated. After an initial startup, the sensor starts transmission of the current depth and height. [. . . ] The sensor update rate controls how often the sensor reads and reports the height. Note that a faster update rate will decrease the battery life. Fast: Recommended for new equipment, or if you are not familiar with the bottom conditions. Slow: Recommended for long operational time. The system will be less sensitive due to the slow data update. System configuration The sensor must be configured with to unique sensor numbers. Select the same update rate for both, and use channel numbers according to the sensor's configuration. Write down this configuration for future reference. On the receiver, the Interference filter must be switched on. Set it to Level 9 if you have noise problems from other hydroacoustic sources. Note that this filters will influence the signal spectrum shown in the Status display. We recommend that you set the sensor filter to Light. Numerical presentation On the PI display, you must use two channels to receive the information from the SeineSounder. The depth and height values are then shown in the numeric display. If the height or depth is increasing or decreasing, this is shown with two arrows and the variation in meters per minute. You can also see the depth and height changes as a function of time in a graphical presentation. When the readings are stable, the digits are shown in black colour. [. . . ] In order to secure the sensor in place, we recommend that you assemble a bag of finemeshed net, and ties this to the trawl close to the middle of the headrope. The sensor must be properly secured to prevent it from moving sideways or rotate during use. Make sure that you have best possible free view between the sensor and the bottom, and between the sensor and the vessel. NOTE! (CD012207C) E D For bottom and pelagic trawl applications, use the SHORT key bolt! 313699 / Rev. B / October 2007 Simrad Kongsberg Maritime AS Strandpromenaden 50 P. O. Box 111 N-3191 Horten, Norway Telephone: +47 33 03 40 00 Telefax: +47 33 04 29 87 www. simrad. com simrad. sales@simrad. com [. . . ]