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Echotrac DF 3200 MK II
The latest generation of the ECHOTRAC dual frequency survey echo
sounder employs the latest in technologies including a high-resolution thermal printer,
microprocessor, DSP techniques, and flat screen displays.
The sonar transceiver, echo processor, graphical operator
interface and hardcopy recorder are all housed in one portable, splash-proof
case. The unit is suited to table top, bulkhead, or rack mounting and is equally at home on
either small survey launches or large ships. Well suited for use in the shallows of rivers
and harbors, the mission variable unit is also capable of working to depths of over 2,000
meters.
Features
 | FREQUENCIES: Either single or dual frequency configurations
of the unit are available: Standard frequencies are 200 and 24khZ or 210 and 33kHz.
 | Optional frequencies:
 |
High – 100kHz to 1MHz |
|
Low – 10kHz to 60 kHz |
|
Side Scan – Single Channel 200kHz |
|
|
| PRINTER: The high-resolution thin-film thermal print head
measures 216mm. (8.5”) wide. Resolution is 8 dots/mm. (023/in) along the print axis
and 8 lines/mm along the paper axis. The unit is capable of printing up to 16 shades
of gray. |
| DISPLAY: The Graphical LCD module (320 x 200 pixels)
measures six inches diagonally (156.4mm). Fluorescent Back Lighting (CFL) of the
paper white display provides excellent visibility in all light
conditions. In dual
frequency operation, both high and low frequency depth values are displayed continuously. |
| KEYPAD: a 16 NEMA 12 sealed unit with tactile
feedback is used by the operator for parameter selection and numerical value
entry. Ten digits, Up, Down, Left, and Right arrow keys, Decimal Point/Help and Enter keys are
provided. |
| DIGITIZER: The bottom tracking capabilities of the unit are
enhanced by utilizing the DSP capabilities of the digitizer processor. These DSP
algorithms yield reliable bottom detection even in the presence of high ambient noise and
multiple returns. |
Communications
| INTERFACING & ANNOTATION: Four bi-directional RS-232
serial ports are standard. Depth information is output after each sounding cycle
with the standard string including values for both the high and low channels in dual
frequency operation. Output strings conforming to other major echo sounder formats
are available. In addition, system parameters can be configured via
comm1. The
ECHOTRAC accepts annotation of up to 80 characters (printed on the Fix Mark
Line). Standard NMEA formats from GPS receivers as well as proprietary strings from positioning
and navigation systems can also be annotated on the chart. Interfacing to data
acquisition systems is asynchronous and does not require handshaking. |
| HEAVE COMPENSATION: Interfacing to most available motion
sensors is provided over a dedicated RS-232 serial port. In addition to the
“Raw Seabed”, both Heave data (scaled values from the motion sensor) and a
“corrected seabed” (heave data applied to the digital depth) are printed on the
chart in real-time. |
Controls
| ANALOG CONTROLS: Immediate access to critical analog
controls is via front panel potentiometers and switches. They include: Receive
Sensitivity, AGC (Automatic Gain Control) Transmit Power, and Threshold (digitizer
level). Also mounted on the front panel are controls for the printer including:
Chart ON/OFF, Paper advance, Paper Take-up, and Mark. |
| DIGITAL PARAMETERS: Listed below are some of the functions
of the MKII which are controlled using the display (through its system of pull-down menus)
and the keypad.
| Frequency: High, Low or Dual |
|
Scale (Phasing): Manual or Auto bottom tracking |
|
Scale Center: Determines where the center of the chart is placed (at what depth) in
Manual Scale |
|
Scale Width: Sets the width of the chart from 15 meters (60ft.) minimum to 150
meters (360ft) maximum. |
|
Chart Speed: Sync. – for every sounding the printer advances the chart one dot
row (varies with depth). In fixed speeds – from 1 cm./min (1 in.) to 20cm/min.
(8in.) |
|
Print Parameters: Prints the values of all digital parameters on the
chart. |
|
Plot Signal: Plots a line on the chart scaled to equal the relative amplitude of
each return pulse |
|
Annotation: Prints Fix Number, Time, Depth, and Position on the chart. |
|
Zoom: Changes the Printer resolution so that the return is printed in ½ of
the minimum scale width (7.5m or 30ft.) |
|
Units: Meters (cm. Resolution to 599.99m) or Feet. |
|
Bar Check Mode (Fixed gate): Forces the digitizer to lock to the calibration target
and ignore the bottom. |
|
Velocity: Varible from 1,370 to 1,700 m/sec (4,500 to 5,600 ft/sec) |
|
Draft: Can be set from 0 to 40m (0-50ft.) independently in both High and Low
frequencies. |
|
Blanking: Masks the digitizer from seeing the returns shallower than the selected
value. The value can be set from 0 to 5,920m. |
|
Slope: Controls the response rate of the digitizer (tracking gate). |
|
Repetition Rate: Selectable from 1 to 20 “Pings”/sec. Or automatic (based
on end of scale value) |
|
Pulse Width: The length of the transmit pulse is selectable based on the frequency
installed. The number of cycles per “Ping” can be varied from a minimum of
2 to a maximum of 128. |
|
Minimum Depth Alarm: 0-200m (0-700ft.) Alerts the operator that the vessel has
passed a depth shallower than the minimum selected. |
|
Noise Filter: On – Off, the integrating filter eliminates high frequency noise
in the return signal. |
|
Gauge: Tide Gauge, or River Stage correction |
|
| HELP: A description of each parameter and its minimum and
maximum value is available to the operator by pressing the help key. |
| DIAGNOSTICS: Communication to and from the MKII can be
checked by turning the LCD into a virtual computer terminal. This feature provides a
positive check of all serial ports. |
Physical Characteristics
| UNIT DIMENSIONS:
| Height: 470mm. (18.5 in.) |
|
Width: 432mm. (17 in.) |
|
Depth: 279mm. (11 in.) |
|
| WEIGHT
| 21.7 kg. (48lb.) |
|
| POWER REQUIREMENTS
| 9-18VDC, 18-32 VDC, 110/220 VAC (50/60 Hz.) <100 watts average
power. Specify one of the above at time of order. |
|
| OPERATING TEMPERATURE
| 0º to 55º in conditions of humidity up to 95%
non-condensing |
|
Side Scan Option
|
Output Frequency
|
200 kHz
|
|
|
Horizontal Beamwidth
|
0.7 deg.
|
|
|
Vertical Beamwidth
|
42 deg.
|
|
|
Working Depths
|
1.5 to 200 meters (300 meters slant range)
|
|
|
Pulse Length
|
10 to 640 microseconds (selectable)
|
|
|
Pulse
Power
|
25 to 400 watts (selectable)
|
|
| Weight
|
3.86 kg (8.5 lbs.)
|
|
| Diameter
|
5.08 cm (2.0 in)
|
|
| Length
|
82.55 cm (32.5 in)
|
|
|
Mounting
|
Fixed (over-the-side) I to 2 meters below the surface
|
|
Remote Display Unit Option
|
General: The Echotrac Remote Display
Unit (RDU) is primarily designed to provide the Operator, at a remote location, with the
same real-time digital depth information as that produced by the MKII echo
sounder. The intelligent remote also permits the operator to change a limited number of system
parameters and have them transmitted directly to the MKII via the bi-directional serial
interface. |
|
Display: Film Super Twisted Nematic
(FSTN) Dot Matrix LCD Module (320 x 200 pixels, 0.38mm x 0.52mm dot pitch), 6 in.
(156.4mm) diagonal measure, on board controller and fluorescent back lighting
(CFL). The paper white display was chosen for excellent visibility in all light conditions from
bright sun to darkened wheel house. |
|
Keypad: A combination of membrane
switches and discrete push-button switches gives the operator the ability to control all
of the functions of the remote display from the unit's front panel. Access to a
system of menus, including Help screens, is gained using the Up and Down Arrows, plus the
SELECT and MENU switches. Function switches are provided to allow for future
expansion of the unit's capabilities. |
|
Interfacing: The RDU can accept data
from the MKII in either the RS422 or RS232 formats (RS422 requires that a special
"Driver Board" be installed in the MKII). Two identical outputs in the
NMEA 0183 compliant strings $SDDBT or $SDDPT, can be transmitted from the RDU after each
5, sounding cycle of the MKII. The unit is designed to be powered by the MKII via
COMM 2 on the MKII connector panel and the Power Signal Connector on the rear panel of the
RDU. |
|
