Setting up your SportScan® for use Unpack your SportScan and check for the following parts: 1. 2. 3. 4. 5. SportScan Sidescan Sonar Towfish Shackle Cable Floppy Disk containing WIN881SS Software Software User’s Manual *Ballast weights are not included Connecting the cable to the SportScan 1. The rear section of the SportScan houses the sonar transducers and the electronics. To remove this section from the Aluminum ballast housing tube it is necessary to extract the plastic retaining snap ring (Fig.1).
Installing Ballast 1. 2. 3. 4. Remove the nose cone of the SportScan (Fig.6). Extract the ballast mounting plate from inside the ballast housing (Fig.7). Make a note of the orientation. The SportScan is designed to use conventional 3lb lead diving weights as ballast* (Fig.8). Add at least 9lbs of ballast as far forward as possible, securing the weights using tie-wraps. Adding more weight will allow the SportScan to be towed at a greater depth. CAUTION: MAXIMUM DEPTH RATING IS 100 FEET! 5.
Model 881 SPORTSCAN Digital Sidescan Sonar Frequently Asked Questions What can I use to power the SportScan? The SportScan requires a DC voltage between 10 and 16 volts for proper operation (+12VDC @ 0.5A max.). A 12 volt lab power supply could be used, or you can connect to the 12VDC wiring on your boat. A 12 volt car battery could also be used. The RED wire from the SportScan cable should be connected to the Positive terminal and the BLACK wire should be connected to the Negative terminal.
Freq uently Asked Questions (con’t) Why does my GPS work with my NAV program but not with Win881SS? The serial port used for the GPS input must not be in use by another program when invoking Win881 SS (only one program can have access to any one serial port). Ensure that the GPS receiver unit is setup to output $GPGLL, $GPGGA or $GPRMA messages at 4800 bps, No Parity, 8 Data Bits and 1 Stop Bit.
Freq uently Asked Questions (con’t) Can the SportScan be damaged in any way by operating it out of the water? No, the SportScan can not be damaged by operating it in air. In fact, all units receive a 24 hour burn-in test (in air) before shipping. However, if you do operate it in air (i.e. on the deck of your boat), ensure that the unit is not sitting in direct sunlight for extended periods of time. How much hard drive space is required for saving the .
Freq uently Asked Questions (con’t) What Gain setting should I use? The Gain setting is like a volume control on a stereo, the higher the number, the ‘louder’ the image will be. The type of seafloor beneath you will determine the gain setting that you should use. When the Color Table is set to ‘Color’, the sidescan data will be displayed using blue, green, orange, yellow, white a red colors. Weak returns will be blue and strong returns will be red.
IMAGENEX TECHNOLOGY CORP. 14SEP01 MODEL 881 SPORTSCAN Single or Dual Frequency Digital Sidescan Sonar Software User’s Manual WIN881SS.EXE: VERSION 1.20 (Windows 95/98/Me) OVERVIEW WIN881 SS is a Windows 95/98/Me program that controls, displays and records data from the single or dual frequency Model 881 SportScan. The program uses an RS-232 COM port (115200,N,8,1) for communication to/from the SportScan.
MAIN MENU File Menu Data From... to display real time data from the connected SportScan Head or previously recorded data from a SportScan File. Record Start (Stop)... opens a File Name Dialog Box so the user can enter a filename for logging SportScan data (ping by ping) complete with date/time and Lat/Lng coordinates. The file extension is always '.81S'. The filename and current size (kbytes) of the file are displayed at the top of the screen. File recording continues until Record Stop is selected.
MAIN MENU (con't) Com Ports Menu SportScan Head to select the serial communications port (COM1-COM32) for communicating with the SportScan. Ports that are already used or unavailable are not displayed. All communication through this port is at 115200 bits per second, No Parity, 8 Data Bits and 1 Stop Bit. GPS Input to select the serial communications port (COM1-COM32) for receiving Lat/Lng ships position coordinates and ships speed and heading information from a GPS receiver.
MAIN MENU (con't) Misc Menu Units to change the units of measurement from Meters to Feet. Grid Clear Screen Now to display the range division lines on the sonar display. to clear all echo data from the sonar display. Diagnostics displays the Diagnostics pop-up window. This window displays the header information from the SportScan. Zoom Manual Speed Speed from GPS Speed Correction Along Track Marks displays a x3 pixel zoom pop-up window.
MAIN MENU (con't) Options Menu Target Calculations: Target Length to measure the distance between two targets. Position the target cursor anywhere on the sonar image display and press the right mouse button. A second target cursor is displayed with a rubber-banded line drawn between the two cursors. The distance between the two cursors is displayed in meters (or feet). Press the right mouse button again to remove the second cursor.
MAIN MENU (con't) About Menu About... displays an about box showing the software version and date of this program. Contact information for Imagenex Technology Corp. is also displayed.
ON SCREEN SWITCHES DATA FROM 'HEAD' to display real time data from the connected SportScan Head. DATA FROM 'FILE' to display data from a previously recorded '.81S' SportScan file. Hold to hold or freeze the display. Range to change the sonar operating range. Available ranges are: 15m (50ft) 30m (100ft) 60m (200ft) 90m (300ft) 120m (400ft) Available only when DATA FROM ‘HEAD’ is active. Gain to change the gain of the SportScan receiver amplifiers.
KEYBOARD SWITCHES The following switches are selected via keyboard entry (case insensitive): G to change the Gain of the SportScan receiver amplifiers. When the 'G' key is pressed, the Key Command Entry Box (above the Lat/Lng window) displays the prompt: Gain: ? dB. Type in a valid gain number (0-40) and press to change to the new gain value. If the entered gain is not valid or the key is pressed, the current gain will be used. Available only when DATA FROM 'HEAD' is active.
DATA STORAGE FILE FORMAT (.81 S) When recording the SportScan data to a .
DATA STORAGE FILE FORMAT (.
DATA STORAGE FILE FORMAT (.81S) (con't) 47-58 GPS Ships Position Latitude – text string (12 bytes) “_dd.mm.xxx_N” dd = Degrees mm = Minutes xxx = Decimal Minutes _ = Space N = North or S = South 59-70 GPS Ships Position Longitude – text string (12 bytes) “ddd.mm.
DATA STORAGE FILE FORMAT (.
DATA STORAGE FILE FORMAT (.
SONAR THEORY AND APPLICATIONS EXCERPT FROM IMAGENEX MODEL 855 COLOR IMAGING SONAR USER'S MANUAL Presented by: Del Norte Technology Ltd,
ABOUT YOUR SONAR TERMINOLOGY: The following is an explanation of the basic terms used by Imagenex to describe their sonar techniques. Color: The different colors used to represent the varying echo return strengths. Echo: The reflected sound wave Echo Return: The time required for the echo to return to the source of the sound Sonar: The principle used to measure the distance between a source and a reflector (target) based on the echo return time Target: The object that you wish to obtain information about.
Profiling process is the selection of the echo returns for plotting. The sonar selects the echo returns, typically one or two returns for each "shot", based on a given criterion for the echo return strength and the minimum profiling range. The information gathered from the selection criteria forms a data set containing the range and bearing figures. An external device, such as a personal computer or data logger, accesses the data set through an RS-232 interface with the sonar.
floating on the surface in the same place. By analyzing the shadows you can estimate the height of objects above the bottom. An example of this calculation is shown in Figure 4. The diagrams following this chapter are examples of the sonar scanning process. Studying the diagrams will help you to better understand the images that you see. A basic knowledge of this process will help users to interpret what otherwise might be confusing images.