Avisoft UltraSoundGate 416-200 User manual

Components of the UltraSoundGate 416-200
7
1
5
4
2
Introduction
Thank you for purchasing UltraSoundGate 416. This device allo s
high-speed data acquisition at sampling rates of up to 750 kHz. In
conjunction ith the accompanying soft are Avisoft-RECORDER
USG, sound-activated direct-to-disk recording and real-time
spectrogram display is supported. The integrated high-quality
analog-to-digital converter ith adaptive anti-aliasing filter provides
best performance. The trigger button supports remote-controlled
harddisk recording. The rugged and compact design and the USB
interface make this device the optimal choice for portable
ultrasound recording in the field.
Getting started
The UltraSoundGate device appears to the PC as a standard audio
recording interface. Therefore, any sound recording application can
be used to operate this device. Ho ever, please note, that only
certain sampling frequencies are supported (see table Sampling rates,
resolutions & oversampling).
The recording soft are Avisoft- ECO DE USG is specifically
adopted to this device and ill support all UltraSoundGate features.
After installation, this soft are can be launched from Start /
Programs / Avisoft / ECO DE USG (rec_usg.exe).
First go to Options / Configuration and select the desired
sampling rate from Input-Device Settings / Sampling rate. Click
Ok. Then click at the Pause button (Monitoring/Pause) and the
Start button (Monitoring/Start). You ill then see the real-time
spectrogram displaying data acquired by the UltraSoundGate. For
details on the operation of the RECORDER soft are see the
Avisoft-RECORDER manual and the section Software Settings in
this guide.
Installation procedure
Hardware Installation
Simply connect the UltraSoundGate to an USB port. An USB Audio
Device and a HID device ill be detected automatically. On the
device, the green POWE LED should light and the amber LED
labeled EC should flash once it is connected to the PC. There is
no further user-interaction required. Only in Windo s 98, the Add
New Hardware Wizard dialog box ill appear and you should
follo the the instructions. To check, hether the device has
successfully been installed you may go to “Start->Settings->Control
Panel->System->Device Manager”. Check the “USB Audio Device”
under “Sound, video and game controllers” and the “Input devices
(Human Interface Device)”. There should appear an “USB-HID
(Human Interface Device)“ representing the trigger button.
Software installation
If you have also purchased the recording soft are “Avisoft-
RECORDER USG”, that is required to use the trigger button, you
ill need to install the Avisoft soft are from the accompanying CD-
ROM. In Windo s 2000 and XP you have to log on as
Administrator. The installation program setup.exe ( hich usually
starts automatically) ill install both the Avisoft-RECORDER and
the SASLab Pro soft are.
8
3
6
1 XL input connectors
The 5-pole XLR input connectors represent the analog inputs of the
recording device and provide po er supply voltages for external
amplifiers and microphones. The connector scheme is as follo s:
2 T G EMOTE
This 2-pole (mono) 2.5 mm mini-jack connector is electrically
connected to the TRIGGER button (5) and allo s connecting an
external trigger. This input is TTL-compatible (there is an internal pull-
up resistor of 10 kOhm to +5V). Pulling this input to ground (e.g. by
closing a s itch) ill activate the internal virtual joystick button.
1
2
3-
+
differential source
1 Ground
2 Positive input
3 Negative input
4 +5V supply voltage (max current 20 mA)
5 +200V polarization voltage (only model 416-200)
45
+200V
+5V
1
2
3-
+
single-ended source
45
+200V
+5V
3 DIGITAL INs
These 2-pole 2.5mm mini-jack connectors allo to connect external
digital signals. These inputs are TTL-compatible (internal pull-up
resistor of 10 kOhm to +5V). The status of the digital inputs is
stored in the LSB (bit 0) of the 16-bit data ords that are transmitted
over the USB and can be extracted after ards by the Avisoft-
SASLab Pro sound analysis soft are (e.g. for creating labels). The
digital input is not available in the 8-bit recording mode. Once a plug
is connected to this digital input, the available resolution is reduced
to 15 bits (the LSB is discarded).
4 Overload indicators
These red LEDs indicate clipping (over-modulation).
5 T IGGE button
The silver-colored trigger button is represented to the operating
system as a standard joystick button that can be used to start and
stop hard-disk recording in conjunction ith the Avisoft-RECORDER
soft are. To enable this mode of operation, the trigger type
Joystick button1 / USG Button must be selected from the
Configuration dialog (menu Options/Configuration). If the
TRIGGER button is pressed for more than t o seconds, the virtual
joystick button1 ill be activated permanently. This is indicated by
the flashing REC indicator (6). The virtual button1 can then be reset
(stop recording) by pressing the TRIGGER button again (the amber
LED ill be s itched off). This feature may be useful for recording
longer sequences. If this auto-hold behavior is not desired, one of
the other virtual joystick buttons may be used instead:
6 EC indicator
This amber LED ill flash once the device is connected to the PC. It
ill be s itched off permanently hen a sound recording application
is streaming audio data. It ill light again permanently as long as
the TRIGGER button is being pressed (representing the state of the
joystick button). If the TRIGGER button is pressed for more than 2
seconds, it ill start to flash.
7 POWE indicator
This green LED ill light as long as the device is connected to the
USB. In case the computer or HUB is unable to provide the required
supply current (because there are other devices connected or the
batteries of the laptop are empty), this LED ill be s itched off.
8 ecording level controls
These control knobs adjust the analog input recording levels for
each channel.
9 USB connector cable
Connect the UltraSoundGate 416 to a USB 1.1 or USB 2.0 port of a
computer.
button1: represents the state of the button for the first 2 seconds, then auto-hold mode
button2: represents the state of the TRIGGER button (no auto-hold)
button3: represents the inverse state of the TRIGGER button (no auto-hold)
button4 : changes its state each time the TRIGGER button is pressed (toggle mode)

Available sampling rates, number of channels,
resolutions & oversampling
Sampling rates [Hz] 8 Bit 16 Bit 32-fold
750000 +
500000 + + +
375000 + + + +
300000 + + + + +
250000 + + + + + + +
214285 + + + + + +
187500 + + + + + + +
166666 + + + + + + +
150000 + + + + + + + +
125000 + + + + + + + +
100000 + + + + + + + + +
75000 + + + + + + + + +
62500 + + + + + + + + +
50000 + + + + + + + + +
This table lists the available bit depths and oversampling ratios for
each sampling rate. The number of crosses represents the number
of available channels at each rate. The oversampling ratio ill be
16-fold for those rates not marked in the 32-fold column. 32-fold
oversampling ill provide slightly better signal-to-noise ratios and
better anti-aliasing performance.
Specifications
Analog-to-digital converter type sigma-delta
ith anti-aliasing filter
Number of channels 4
ADC resolutions 8 or 16 bit
Number of digital inputs 4
Analog input impedance 50kOhm
Frequency response (+-3dB) 0.05 ... 370 kHz
Maximum input sensitivity +-20mV
Supply current dra n f rom USB 450 mA
Physical dimensions (W/H/D)
Weight 600 g
103 * 56 * 145 mm
In the interest of product improvement, the specifications and/or
appearance of this unit are subject to change ithout notice.
IBM-compatible PC, Pentium II, 230MHz or more ith at least one
USB port, running Windo s2000/XP
(Windo s3.1 and Windo s95 are not supported and Win 98/ME do
not support 3 and 4 channel recording).
System requirements
Software Settings
Avisoft- ECO DE
For higher sampling rates it may be useful to reduce the buffer size
under Options/Configuration/Input Device Settings/Buffer.
Smaller values for this Buffer parameter ill increase the update
rate of the real-time displays.
Sound-activated recording can be arranged by selecting the
Trigger option level of this channel. For remote-controlled
triggering via the trigger button on the device, the trigger option
joystick button1 / USG button should be used. The joystick
buttons 2, 3 and 4, hich behave differently, may also be used. For
triggering by a logic signal attached to DIGITAL IN, select
UltraSoundGate DI.
In order to simplify the operation of the Avisoft-RECORDER
soft are in the field, a link to ECO DE USG may be added to
the Windo s utostart folder (Start->Programs->Autostart).
Additionally, the Avisoft-RECORDER option Monitoring/ utostart
should be activated. This arrangement ill start the monitoring
process automatically after booting the laptop (the UltraSoundGate
device must be attached to the USB port prior to booting
Windo s).
Avisoft-SASLab Pro
For recording from the main indo recording command
(File/ ecord) or from the real-time spectrograph indo (menu
File/ eal Time Spectrogram...) first open the Sound Card
Settings dialog box (menu Parameters). Select the visoft-
UltraSoundGate 416 (or USB udio Device in Windo s 2000,
ME, 98) from the active Sound Card list box. Then select the
desired sampling rate from the Sampling Frequency list box (see
the table on the right for valid rates). Additionally, launch the Buffer
Size dialog box from the Parameters menu. Activate the option
Enable Joystick button#1 / USG button. The efreshing
interval [%] parameter can be reduced in order to get a smoother
real-time display.
Depending on the computer po er, the maximum FFT overlap for the real-
time spectrogram may be limited at high sampling rates (>300 kHz). In such
cases it may happen that the recording mode cannot be stopped. This
problem can be solved by reducing the overlap parameter.
Please refer to the Avisoft-RECORDER and Avisoft-SASLab Pro
manuals or the online help files for further details.
User's Guide Model 416-200
Avisoft Bioacoustics
Breite Straße 20 A
13187 Berlin
Germany
Phone: [phone]
Fax: [phone]
.avisoft.com
.ultrasoundgate.com

End-user Agreement
This a legal agreement between Avisoft Bioacoustics and
the buyer. By operating this device and the accompanying
software, the buyer accepts the terms of this agreement.
1.The Device and the accompanying soft are is arranted to
perform substantially in accordance ith the operating manual for
a period of six month from the date of shipment.
2.EXCEPT AS SET FORTH IN THE EXPRESS WARRANTY ABOVE,
THE DEVICE IS PROVIDED WITH NO OTHER WARRANTIES,
EXPRESS OR IMPLIED. THE VENDOR EXCLUDES ALL IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, IMPLIED
WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
A PARTICULAR PURPOSE.
3.The Vendor’s entire liability and the Buyer’s exclusive remedy shall
be, at the Vendor’s SOLE DISCRETION, either (1) return of the
device and refund of purchase price or (2) repair or replacement of
the device.
4. THE VENDOR WILL NOT BE LIABLE FOR ANY SPECIAL,
INDIRECT, OR CONSEQUENTIAL DAMAGES HEREUNDER,
INCLUDING, BUT NOT LIMITED TO, LOSS OF PROFITS,
LOSS OF USE, OR LOSS OF DATA OR INFORMATION OF
ANY KIND, ARISING OUT OF THE USE OF OR INABILITY
TO USE THE DEVICE IN NO EVENT SHALL THE VENDOR
BE LIABLE FOR ANY AMOUNT IN EXCESS OF THE
PURCHASE PRICE.
5. This agreement is the complete and exclusive agreement
bet een the Vendor and the Buyer concerning the device.