XLTEK EEG32U Amplifier User and Service Manual
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B. Digital Board
• Analog to Digital converters digitize the amplified EEG signals. Signals are periodically sampled
and converted to a binary number.
• The micro controller transmits the digitized signals to the computer over USB 2.0 connection.
• Contains non-volatile storage for calibration values.
• During factory calibration, the NeuroWorks computer calculates and transmits the channels gains
to each digital board. Whenever a study starts, the computer uses these stored values to scale
the digitized signals, channel by channel.
• Equipped with a Patient Event connector that detects an Event Switch closure and transmits it to
the computer.
• Equipped with a Photic stimulator connector that allows to:
• Transmit commands from the computer to the photic stimulator over USB 2.0 connection.
• Transmit feedback (flash strobe marks) from the photic stimulator to the computer over
USB 2.0 connection.
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