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EMG-USB2 User manual
v.2.0
USB connector
Connect the PC by means of a standard A-B USB cable to this connector.
AUXILIARY INPUTS connectors
These BNC type connectors can be used to acquire external amplified signals, in the range ± 5 V,
together with the bioelectrical signals. The sixteen auxiliary inputs work even if no other inputs of
the front panel are used. Thus, the EMG-USB2 can be used as an sixteen channels USB acquisition
board. To properly set and acquire these channels refer to the OT BioLab user manual.
TRIGGER connector
This BNC type connector can have different function that can be select from the different software
version.
TRIGGER connector can be set as an INPUT and used to start the data transfer by means of an
external TTL signal (0÷5V) .
TRIGGER connector can be set as an OUTPUT and provide a square waveform to synchronize the
EMG-USB2 with other devices.
ANALOG OUTPUT connector
This BNC type connector outputs one of the amplified and filtered signals (refer to the Analog out
setting) over the insulation barrier for safety connection to others instruments. The output range is
0 ÷ 5V and the bandwidth range from DC to 4100 Hz with a first order low pass filter acting as a
post DAC filter.
A possible use of this output is to provide the input to an audio amplifier to play the EMG signal.
The signal can also be sent to other instruments to provide some kind of biofeedback or
synchronization. The OT Bioelettronica is available to design any kind of adapter or instrument to
manage this output on request.
REMARK: the analog signals is available only after the EMG-USB2 has been connected to the PC by
means of a USB cable and the signal visualization has been started on OT BioLab.
pag. 17/31
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