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IMAGENEX TECHNOLOGY CORP. 852-000-145 Manual

Ultra-miniature 11000 m digital echo sounder
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IMAGENEX TECHNOLOGY CORP.
MODEL 852-000-145
ULTRA-MINIATURE DIGITAL
ECHO SOUNDER
ECHO SOUNDER S/N _____________
IS CONFIGURED FOR:
_______________ VDC INPUT
______________ @ 115.2 kbps
IMAGENEX TECHNOLOGY CORP.
209-1875 BROADWAY STREET
PORT COQUITLAM, B.C.
CANADA, V3C 4Z1
TEL: (604) 944-8248
FAX: (604) 944-8249

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  • Page 1 IMAGENEX TECHNOLOGY CORP. MODEL 852-000-145 ULTRA-MINIATURE DIGITAL ECHO SOUNDER ECHO SOUNDER S/N _____________ IS CONFIGURED FOR: _______________ VDC INPUT ______________ @ 115.2 kbps IMAGENEX TECHNOLOGY CORP. 209-1875 BROADWAY STREET PORT COQUITLAM, B.C. CANADA, V3C 4Z1 TEL: (604) 944-8248 FAX: (604) 944-8249...

  • Page 2: Imagenex Model 852

    852 Echo Sounder 11000 m 445-060 MARCH 2009-REVISED MAY 2017 IMAGENEX MODEL 852 ULTRA-MINIATURE 11000 m ECHO SOUNDER APPLICATIONS: FEATURES: • • ROV Navigation Ultra-miniature size is ideal for mounting • Diving Support on today’s micro ROV’s • • Inspection Low cost •...

  • Page 3: Software Specifications

    REQUIREMENTS: 1 GB Hard Disk 800 x 600 x 256 colour graphics ORDERING INFORMATION: 11000 m UNIT Standard 852-000-145 RS-232 Option -006 40 – 56 VDC Option -013 Product and company names listed are trademarks or trade names of their respective companies.

  • Page 5: Screen Layout

    IMAGENEX TECHNOLOGY CORP. 18FEB16 MODEL 852 ULTRA-MINIATURE DIGITAL SCANNING SONAR HEAD and ECHO SOUNDER WIN852.EXE: Display Software For Windows XP/Vista/7/8/10 VERSION 2.09 OVERVIEW WIN852 is a Windows program that controls, displays and records data from the Model 852 Ultra-Miniature Digital Scanning Sonar Head and/or the Model 852 Ultra-Miniature Digital Echo Sounder.

  • Page 6: Main Menu

    MAIN MENU File Menu Record Start (Stop)... opens a File Name Dialog Box so the user can input a filename for logging sonar and/or echo sounder data (shot by shot) complete with date/time stamp. The file extension is always '.852'. The filename and current size (kbytes) of the file are displayed at the top of the screen.
  • Page 7 MAIN MENU (con't) Options Menu Units to change the units of measurement from Meters to Feet. Xdcr Position to adjust the display of the sonar head echo data relative to the physical mounting of the sonar head. If the xdcr (transducer) is physically mounted down (red side down), this switch should be set to 'Down'.
  • Page 8 MAIN MENU (con't) RTS Enable use this mode if your RS-485 serial i/o card or converter requires RTS (Request To Send) to enable its’ transmit driver. Depth/Heading/Turns to select the serial communications port (COM1-COM32) for receiving Depth, Heading and Turns Count information generated from an ROV computer system.
  • Page 9 MAIN MENU (con't) Set Switches Menu Sonar Head Enable / Disable to enable or disable sonar head communications. The following parameters can be controlled: Range 5, 10, 20, 30, 40, 50 Meters or equivalent Feet Gain 0 to 40 dB Train Angle not available Sector Size...
  • Page 10 MAIN MENU (con't) Misc Menu Grid On/Off to display the range rings on the sonar display. Pixel Zoom (x2) displays a x2 pixel zoom window in the lower right hand corner of the screen. A rectangular area about the cursor is displayed in this window. If the left mouse button is pressed anywhere in the sonar image window, the zoom window will be captured (held).
  • Page 11 MAIN MENU (con't) Sonar On When Minimized when this item is checked, the sonar head and/or echo sounder will continue to operate and log data when the sonar screen is minimized. If not checked, the serial port is closed while communication and data logging are put on hold until the screen is maximized.
  • Page 12 ON SCREEN SWITCHES DATA FROM 'HEAD' to display data from the connected sonar head and/or echo sounder DATA FROM 'FILE' to display data from a previously recorded '.852' Sonar file. Hold to hold or freeze the display. to reverse the current scanning direction of the sonar head. Available only when DATA FROM 'HEAD' is active.
  • Page 13 ON SCREEN SWITCHES (con’t) Train always 0 degrees in Sector and Polar Modes. Up, Down, Port and Stbd settings are available for Sidescan Mode. KEYBOARD SWITCHES The following switches are selected via keyboard entry (case insensitive): to clear the sonar screen display. to change the Start Gain of the sonar head.
  • Page 14 ONE CURSOR MEASUREMENT One Cursor Measurement is used for measuring the distance and relative bearing to a target with respect to the transducer origin. When the mouse is moved into the sonar image display area, the cursor changes from an arrow to a square target cursor. The range and bearing to the target cursor is displayed in the Range/Bearing Display Box underneath the sonar image display.

  • Page 15: File Header

    IMAGENEX TECHNOLOGY CORP. 16SEP15 MODEL 852 DIGITAL SONAR HEAD MODEL 852 DIGITAL ECHO SOUNDER DATA STORAGE FILE FORMAT (.852) When recording the sonar and/or echo sounder data to a .852 file, the following bytes are appended and saved to the file every 'shot': Byte # Description 0 to 99...
  • Page 16 DATA STORAGE FILE FORMAT (.852) (con't) nToRead - Number of Bytes from the sonar or echo sounder Byte 6 Byte 7 13 (for IPX), 265 (for IMX) or 513 (for IGX) 8-19 Date - null terminated date string (12 bytes) "DD-MMM-YYYY"...
  • Page 17 DATA STORAGE FILE FORMAT (.852) (con't) (Train Angle)/3 For Sonar Head (Head ID = 0x10): 10 to 130 = -180 to +180 Degrees in 3 degree increments 70 = 0 degrees For Echo Sounder (Head ID = 0x11): Reserved – always 0 Reserved –...
  • Page 18 DATA STORAGE FILE FORMAT (.852) (con't) 80-81 ROV Depth Byte 80 Byte 81 ROV Depth * 10 If 'D' = 0, ROV Depth not available If 'D' = 1, ROV Depth = [((Byte 80 & 0x7F)<<8) | (Byte 81)]/10 ROV Depth Units ‘M’...
  • Page 19 DATA STORAGE FILE FORMAT (.852) (con't) SONAR / ECHO SOUNDER RETURN DATA HEADER SONAR / ECHO SOUNDER RETURN ECHO DATA ZERO FILL The following bytes contain the Sonar / Echo Sounder Return Data that is acquired directly from the sonar head or echo sounder serial COM port (refer to the Model 852 Serial Interface Specification): If Header is ASCII ‘IPX’: Bytes 100 through 112 (13 bytes)
  • Page 20 IMAGENEX TECHNOLOGY CORP. 05FEB16 MODEL 852 DIGITAL ECHO SOUNDER SERIAL INTERFACE SPECIFICATION (v1.04) OVERVIEW The Model 852 Digital Echo Sounder communicates over a 2-wire differential RS-485 serial data transmission line or optionally a half-duplex RS-232 data line. To interrogate the echo sounder and receive echo data, a Switch Data Command string is sent via a serial command program at a baud rate of 115200 bps, No Parity, 8 Data Bits and 1 Stop Bit.
  • Page 21 SWITCH DATA COMMAND (con't) BYTE DESCRIPTIONS Note: All Byte values are shown in decimal unless noted with a '0x' (hexadecimal) prefix. Byte 0 Switch Data Header (1st Byte) Always 0xFE (254 decimal) Byte 1 Switch Data Header (2nd Byte) Always 0x44 (68 decimal) Byte 2 Head ID 0x11, 0x12, 0x13, 0x14 or 0x15...
  • Page 22 SWITCH DATA COMMAND (con't) Byte 8 Start Gain 0 to 40dB in 1dB increments Byte 9 Reserved Always 0 Byte 10 Absorption 20 = 0.2 dB/m 675 kHz Byte 11 Reserved Always 0 Byte 12 Reserved Always 0 Byte 13 Reserved Always 0 Byte 14...
  • Page 23 SWITCH DATA COMMAND (con't) The following External Trigger Control byte is valid only for 852 Echo Sounders supplied with the External Trigger Hardware Option. The external trigger must be a 0 to 5 volt TTL pulse with a minimum length of 100 microseconds. Byte 18 External Trigger Control Bit0: Trigger Edge: 0 = NEG, 1 = POS...
  • Page 24 SWITCH DATA COMMAND (con't) Byte 23 Reserved Always 0 Byte 24 Switch Delay The echo sounder can be commanded to pause (from 0 to 510 msec) before sending its return data to allow the commanding program enough time to setup for serial reception of the return data. 0 to 255 in 2 msec increments Byte 24 = delay_in_milliseconds/2 Do not use a value of 253!
  • Page 25 ECHO SOUNDER RETURN DATA Every ping, the echo sounder returns a 12 Byte header, up to 500 points of echo data (depending on the Switch Data command that was sent) and a terminating byte value of 0xFC. The total number of bytes (N) returned will be 13, 265 or 513. Byte # Description 0 to 5...
  • Page 26 ECHO SOUNDER RETURN DATA (con’t) Byte 4 Serial Status Bit 0 - 1 = Echo sounder Bit 1 - 0 Bit 2 - 1 = Automatic External Trigger Mode available Bit 3 - 0 Bit 4 - 0 Bit 5 - 0 Bit 6 - 1 = Switches Accepted Bit 7 - 1 = Character Overrun Byte 5...
  • Page 27 ECHO SOUNDER RETURN DATA (con’t) Byte 12 Start of Echo Data If Header is ASCII ‘IMX’: N = 265, (252 Data Bytes, 252 Points) 1st Range Point = Byte 12 2nd Range Point = Byte 13 3rd Range Point = Byte 14 4th Range Point = Byte 15 If Header is ASCII ‘IGX’: N = 513, (500 Data Bytes, 500 Points)
  • Page 28 IMAGENEX TECHNOLOGY CORP. 09FEB16 MODEL 852 DIGITAL ECHO SOUNDER WIN852.EXE c/w External Trigger Option Special Notes: Before using the external trigger feature, ensure that your 852 Echo Sounder has been supplied with the External Trigger Hardware Option. The external trigger must be a 0 to 5 volt TTL pulse with a minimum length of 100 microseconds.
  • Page 29 SONAR THEORY AND APPLICATIONS EXCERPT FROM IMAGENEX MODEL 855 COLOR IMAGING SONAR USER'S MANUAL IMAGENEX TECHNOLOGY CORP. #209 - 1875 BROADWAY ST. PORT COQUITLAM, B.C. V3C 4Z1 CANADA TEL: (604) 944-8248 FAX: (604) 944-8249...

  • Page 30: About Your Sonar

    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.

  • Page 31: Using An Imaging Sonar On An Rov

    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.
  • Page 32 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.

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