natus Xltek EMU40EX, Руководство пользователя и обслуживания

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EMU40EX™ User and Service Manual
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EMU40EX Amplifier System Description
This section presents a description of the EMU40EX amplifier system and its modes of operation,
The EMU40EX EEG amplifier system consists of a Patient Electrode Set, Breakout Box, and Base Unit. The EMU40EX Amplifier
System is designed to work with a host computer system running the Natus Database and NeuroWorks data review and
analysis software.
The EMU40EX Breakout Box is a 40-channel EEG amplifier with touch-proof jacks for the EEG electrode lead-wires. It converts
the electrical activity of the patient’s brain into a digital data stream. It also integrates SpO2 and Pulse Rate channels from its
built-in Masimo SET
® Pulse Oximeter, as well as Patient Event Markers from a pendant-style, pushbutton switch at the bedside.
The digital EEG waveform data is transmitted to the Base Unit for further signal processing and storage. The Base Unit makes
this data available over Ethernet or USB to a NeuroWorks workstation for live waveform display, later review and clinical
interpretation of the waveforms. The Base Unit also provides four DC inputs, photic stimulator control, another event marker
input, and controls for EEG electrode impedance testing in the patient room.
The EMU40EX Breakout Box can be connected to the Base Unit with a cable or can connect wirelessly through a secure
Bluetooth link. Using the EMU40EX amplifier system in its various operational modes is described in detail below.
EMU40EX Breakout Box to Base Unit Data Link
The EMU40EX breakout box communicates with the Base Unit through a bi-directional 4 Mbit/s wired connection. This
connection is used to send the real-time, full-resolution digitized EEG waveforms and associated signals to the Base Unit.
In addition, the Breakout Box and Base Unit can connect wirelessly using an optional unidirectional 230.4 Kbit/s wireless
connection. With this option, the Breakout Box stores the data into its flash memory and sends down-sampled EEG waveform
data to the Base Unit, which in turn forwards the data to the NeuroWorks computer for real-time display of the EEG
waveforms.
Note that the Base Unit can send data/commands to configure and control the EMU40EX Breakout Box only through the cable
connection.
The optional wireless feature is available at the customer’s request. There are two steps required to use this option. First, at the
customer’s request, this feature is enabled at the factory. Secondly, the user must enable this feature in the NeuroWorks
software prior to using the Bluetooth wireless mode.
The following two sections describe how to use the EMU40EX when the wireless option is disabled, and when the wireless
option is enabled.