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CM2 Sidescan Sonar User Manual
15. SPECIFICATIONS
Towfish Specifications
Operating depth
0-2500m
Acoustic frequencies
100kHz -LF
325kHz –HF (compatible with industry "500kHz" specs)
780kHz -EF
Ranges (port and starboard)
100m,150m, 200m,300m,400m,500m –LF; 25m, 50m, 75m,100m,150m –HF; 12.5m, 25m -EF
Operating speed
1-6 knots
Maximum towing speed
12 knots
Acoustic pulse rates
500 / [selected range-limit], e.g. 10 scans/second @ 50m
Pulse power and length
217dB re 1 micropascal @ 1m; range-dependent length, e.g. 53microseconds @ 50m
Array length and beamwidths (2-way 3dB points)
0.41m -HF & LF; 0.3m –EF; 0.3º horiz.,
40º vert. asymmetric –HF; 1.0º horiz., 50º vert. –LF; 0.2º horiz., 50º vert. –EF
Lateral resolution
39mm-EF, 78mm-HF, 156mm-LF
Beam depression (of maximum sensitivity axis)
10º or 20º, adjustable without tools
Bottom-tracking (altitude) measurement and resolution
Automatic altimeter, from integral echo sounder; 78mm altitude resolution
Safety features
Weak link, breaks to give tail-first towing
Sensor options
Heading, pitch & roll; depth, 0-200m (other depth ranges available)
Construction
Stainless steel; no aluminium
Towfish dimensions and weights
1.24m length; 17.9kg in air, 12.1kg in seawater –DF; 17.1kg in air, 11.3kg in seawater –EDF
Towfish temperature range
-10 to +45ºC operating; -20 to +50ºC non-operating
STR Specifications
The Sonar Transceiver (STR) interfaces the towfish to an external data acquisition computer via a USB link.
It makes the sonar appear to the computer as a USB peripheral. The STR also powers the towfish.
USB1 interface
Digital echo data plus control and status (contact C-MAX for protocol)
Analog interface (early units only)
L, R and TRIG phono outputs (outputs in real time and in replay)
Dimensions (mm) and weight
297W x 204D x 62H, 2.2kg
Power
10-18V DC, 3A max, <2A typical at 12V, optional 24V DC, 2A max, <1A typical (BNC version)
10-28V DC, (MIL-C-5015 version)
100-240V AC via external power adapter
Environment
0 to +45ºC; 10 to 80% RH; 5G, operating
-10 to +55ºC; 2 to 90% RH; 40G, non-op
IP64
Version 3.6 (2008)
30
15. Specifications
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