1.
Package Contents 1) Hydrophone with a built-in preamp
and an integrated XLR cable 2) XLR-to-USB
Converter 3) USB cable (2.0 m) 4) CD (contains the copy-protected
Multi-Instrument Software) 5)
USB hardkey (contains a Multi-Instrument Pro License) 6) Carrying
Case
2. VT USA-168A/B/C
Hardware Configuration
USA-168A
USA-168B
USA-168C
Hydrophone with a Built-in Preamp
Default Cable Length: 9 m
Default Cable Length: 6 m
Default Cable Length: 6 m
XLR-to-USB
Converter
Note: USA-168A has a thread-mount version of hydrophone on request. 1/4" NPT (National Pipe Thread) with
7/16" (12mm) wrench flats. Standard configuration includes 1/2-meter cable with stripped and tinned wire
termination.
3.
VT USA-168A/B/C Overall Specifications
USA-168A
USA-168B
USA-168C
Frequency Range
20Hz ~ 4kHz
(±
4dB)
20Hz~10kHz
(±
5dB)
20Hz~10kHz
(±
4dB)
Sound Level Measurement Range
47dB~165dB
(typical)
58dB~176dB
(typical)
55dB~173dB
(typical)
Useful Frequency Range
(<10Hz) ~ (>100kHz) (Sensitivity drops about 45dB @100kHz)
(<10Hz) ~ (>100kHz) (Sensitivity drops about 44dB
@100kHz)
(<10Hz) ~ (>100kHz) (Sensitivity drops about 44dB
@100kHz)
Operating Depth
<
80m
<
80m
<
100m
Sampling Rate
44.1kHz, 48kHz, 88.2kHz, 96kHz
Bit Depth
24
bit
Number of Input Channel
1
Direct Monitoring without Passing Through Computer
Supported
Frequency Accuracy
0.01%
Frequency Weighting
Flat, A, B, C, ITU-R 468
Time Weighting
Linear, Exponential
(Equivalent continuous sound level (Leq) fully complies with IEC61672)
Octave Analysis
1/1,1/3,1/6,1/12,1/24,1/48, 1/96
(Complies with IEC61260)
Other Functions
Much more functions are described in the
software manual.
