Simrad EY500 User manual

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Simrad EY 500
P3400/B 1
SYSTEM FAMILIARIZATION
P3400E / 857-160017 / 4AA062
Thissectioncontainsadescriptionofthesystemmodules oftheEY500sounder
system. It alsocontains asimplified blockdiagram andtechnical specifications.

System familiarization
2P3400/B
Document revisions
Rev Documentation
department Hardware/Software Design Project/Product Management
Date Sign Date Sign Date Sign
A 25.08.95 CL 25.08.95 HS 31.08.95 RB

Simrad EY 500
P3400/B 3
List of contents
1 INTRODUCTION ........................................... 5
1.1 GENERAL ............................................. 5
1.2 DESCRIPTION OF THE EQUIPMENT ...................... 6
1.2.1 Configuration ....................................... 6
1.2.2 Simplified block diagram .............................. 7
1.2.3 Interconnections ..................................... 8
2 TECHNICAL SPECIFICATIONS ............................... 9

System familiarization
4P3400/B
Document history
(The information on this page is for Simrad’s internal use)
Rev. A Original issue. First edition as module. Was section 1 of P2473E.
Rev. B Change in text on page 10 and more detailed printer specifications on
page 13.

Simrad EY 500
P3400/B 5
1 INTRODUCTION
1.1 GENERAL
TheSIMRADEY500 scientificecho sounderis designedforbiomassestimation
where portability and low power consumption is important. This high-
performance,portablescientificsoundersystemistheresultofcombiningstate-
of-the-art echo sounder technology with the latest achievements in personal
computers (PCs).
The EY 500 system basically consists of power source, transducer, the EY 500
transceiver, a personalcomputer (desktop,laptop, or notebook)and an optional
colour printer. The EY 500 transceiver is housed in a cast aluminium case
designed for the environment encountered in portable use. Emphasis has been
placed on simple installation and ease of operation. A variety of computer
choices is allowed by using standard Centronics parallel interface between
EY 500 transceiver and PC.
Typical applications for the EY 500 are:
Fish stock assessment in lakes, rivers and shallow waters
Fish behaviour studies (the split-beam method allows tracking and counting
of individual fish)
Monitoring biomass from buoys
Pollution monitoring
Dam surveillance systems
The collected data is processed on-line for generation of colour echograms and
tables giving fish densities in up to 10 depth layers. The echogram is presented
onthePCdisplay and onan optionalcolourprinter. Afile systemallows storing
of selected data for further analysis by means of the Simrad EP 500 Echo Post-
processing System. Sample data may also be stored on hard disk and replayed
off-lineforeasyregenerationordemonstrationofsurveyechodata.Anavigation
instrumentmaybeconnectedtothePCserialport,andpositiondataforlogging
of the survey track can be combined with the measured echo data. Remote
control of the EY 500 and output telegrams through serial port are used for
online monitoring of acoustic data.
The EY 500 system includes substantial processing power. Bottom detection,
echo integration and target strength algorithms are carried out solely in
software. The concept used in the receiver design provides an instantaneous
dynamic range of 160 dB. At the same time the absolute amplitude measure-
ment accuracy is very high, and combined with a low self-noise this assures
correct measurement of all targets.

System familiarization
6P3400/B
EY 500
Transducers
Transceiver
PC
Trans-
ducer
Mux
(CD472)
HP printer
Navigation
instrument
Modem
Remote
control
Figure 1 EY 500 system modules.
1.2 DESCRIPTION OF THE EQUIPMENT
1.2.2 Configuration
The EY 500 sounder system comprises
Transducer
Transceiver
PC
Power supply
Colour printer (option)
Navigation instrument
Transducer multiplexing (requires external hardware)
Modem for remote control and telegrams

Simrad EY 500
P3400/B 7
Analog
Transceiver Digital Transceiver PC-
Interface
Power
Shut-down
Power
PC
10 - 40V DC
(
CD473
)
T
rans-
ducer
Figure 2 EY 500 transceiver, simplified block diagram.
A range of single-beam transducers is available for different frequencies.
Additionally, dedicated split-beam transducers are available for 38, 70 and
120 kHz for measuring target strength.
The minimum requirements for the PC to be used with the EY 500 transceiver
are listed under the Technical Specifications.
The EY 500 transceiver requires a supply voltage of 10 to 40 VDC and can be
powered from a battery or from an AC power source via an AC/DC converter.
1.2.4 Simplified block diagram
Figure 2 shows a simplified block diagram of the transceiver electronics.
The EY 500 transceiver unit comprises four printed circuit boards:
CAn analog transceiver module containing transmitter and receivers
CAdigitaltransceivermoduleperformingA/D-conversion,log.amplitudetable
lookup and measurement of electrical phase (applies to split-beam operation
only).
CA PC interface module supporting transceiver and Centronics printer
interface.
Power unit

System familiarization
8P3400/B
TRANSDUCER
COMPUTER AUXILIARY PRINTER
POWER
10 - 40 V Dc
OFF
ON
25 pin male
(Ground)
(CD474)
15 pin female 25 pin female
Figure 3 EY 500 rear interconnection panel.
1.2.6 Interconnections
Figure 3 shows the rear panel of the EY 500 transceiver. It has the following
connectors:
* COMPUTER (25-pin D-conn. male) for connection to the standard parallel
input on the PC. The cable should be less than 1 m and is a 1/1 connection.
* PRINTER (25-pin D-conn female) for connection to the printer input. The
printer cable is a standard Centronics cable and should be max. 5 m.
* TRANSDUCER (12-pin Amphenol military standard type connector,
female) for single and split beam transducer.
* AUXILIARY (15-pin D-conn female) for output of +5 V, ±20 V. Ground, TX
output, 2xfrequency output and power shutdown input control.
* POWER (Cannon connector, male) for 10 - 40 VDC.
* Ground screw.
The PC must have the following ports:
* Centronics port for connection to the EY 500 transceiver
* Serial port for input of navigation data/or remote control and output
telegrams.

Simrad EY 500
P3400/B 9
2 TECHNICAL SPECIFICATIONS
Common specifications for single-beam and split-beam versions:
Frequencies: 38, 70, 120, 200 and 710 kHz
Transmitting power: 50 to 250 W, see table on next page.
Range: 1, 5, 10, 25, 50, 100, 150, 250, 500, 1000, 1500
and 2500 m
Phasing: 0 to 2500 m in 1-m increments.
Display: Echogram in 12 colours (3 dB per colour)
Colour scale related to true volume back-
scattering strength or target strength.
Scope presentation of echo signal amplitude
Layers: Up to 10 surface or bottom locked layers.
Integrator: Virtually unlimited dynamic range. Inde-
pendent integration within each layer.
Data storage: Selected EY 500 data and echogram written
to hard disk in real time.
Calculation intervals: Ping, time or simulated speed.
Replay function: For storing and replaying sample data.
Specifications valid for split-beam version only:
Target strength analyzer: 24 TS classes (1.5 dB per class) in up to 10 layers
given in tables
Target’s position in the beam.
Lobe compensated TS values
Sample angle data and echo trace data in the
super layer
Data storage: TS distribution in preselected layers.

System familiarization
10 P3400/B
Options:
Colour printer: Echogram in 12 colours (3 dB per colour)
Tables available on printer for Sa values and
TS distribution in preselected layers.
SIMRAD EP 500 Echo
Postprocessing System: Postprocessing system developed by Lindem
Data Acquisition. Calculates TS distribution
from single beam data (Craigs and Forbes
statisticalmethod).Echogramsstoredindisk
files can be presented on display and printer.
On-line monitoring of echograms can be done
via serial interface. Sa and TS values can be
calculated in selectable layers off-line.
Minimum PC specification: 386 AT, 8 MByte RAM, 80 MByte hard disk,
Numerical co-processor, Serial port for
navigation data input or remote control and
output telegrams. Printer port for EY 500
transceiver unit. Note that the parallel
interface must be of standard type in order to
work properly with the EY 500.
Option: storage on streamer (Backpack).
Power system: DC voltage 10 - 40 VDC
ACvoltage110-220VAC(viaAC/DCadapter)

Simrad EY 500
P3400/B 11
Transceiver:
Supply voltage: 10 to 40 VDC
Power consumption: approx. 15 W
Operating temperature: 0 - 55E
Transceiver parameters:
Frequency
(kHz) Beam type Power (W) Pulse duration (ms) Bandwidth (kHz) Resolu- tion
(cm)
Narrow Wide
37.878 Single 250 0.3 1.0 3.0 0.38 3.8 10
70.422 " 50 0.2 0.6 2.0 0.7 7.0 5
119.047 " 60 0.1 0.3 1.0 1.2 12.0 3
200.000 " 60 0.06 0.2 0.6 2.0 20.0 2
714.286 " 50 0.06 0.2 0.6 7.1 71.4 2
37.878 Split 250 0.3 1.0 3.0 0.38 3.8 10
70.422 " 50 0.2 0.6 2.0 0.7 7.0 5
119.047 " 60 0.1 0.3 1.0 1.2 12.0 3

System familiarization
12 P3400/B
Maximum detection range for different transducers:
Type Beamwidth
(degrees) Cable length
(m)
Max. detection depth
Freshwater (m) Max detection depth Seawater (m)
fish bottom fish bottom
TS =
!
30
dB TS =
!
50 dB TS =
!
30
dB TS =
!
50 dB
38-22 11x22 15 500 170 3000* 360 140 1900
ES 70-11 11x11 15 440 150 1500* 260 120 950
70-24 11x11 15 480 170 1500* 270 130 950
120-25 11x11 25 440 170 900* 230 120 650
ES120-7 7x7 20 500 210 900* 260 140 700
200-7 7x7 15 350 150 600* 190 100 490
200-28 7x7 25 350 150 600* 190 100 490
200-30 30x30 15 110 40 600* 85 35 290
710-30 5x5 15 75 40 160 65 35 130
710-36 2.5x2.5 15 95 60 180 80 50 150
These transducers can be hull-mounted, foil-mounted or provisionally mounted on a rod. The
range calculations are valid for water temperature 10EC, Sound absorption according to Francois
& Garrison, JASA Dec. 1982, Fish target strength !30 dB and !50 dB, Bottom backscattering
strength -10 dB per sq. m, Acoustic noise = SPL-DI+M+B (dB re 1 V) SPL = 142 -
20 log f (dB re 1 FPa per Hz). Electrical noise -189 + B (dB re 1 W), Detection threshold = 10
dB. Seawater salinity 3.5%, 0.3% for freshwater.
* = Sample limited
Transceiver dimensions and weight:
Transceiver: L340 x W350 x H141 mm, 7 kg

Simrad EY 500
P3400/B 13
Printer specifications:
PaintJet DeskJet, type 850C
Paper width
Resolution
Supply voltage
Power consumption
Operating temperature
Dimensions
Weight
210 mm
720 pixels across paper
187 - 264 VAC 50/60 Hz
90 - 132 VAC 50/60 Hz
21 - 31 VDC
20 W max.
0 - 55EC
W442 x H98 x D302 (mm)
5 kg
210mm
720 pixels across paper
100-240 VAC 50/60 Hz
48 W max.
5 - 40EC
W444 x H226 x D396 (mm)
6.5 kg

System familiarization
14 P3400/B