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Summary of Contents for MindMedia NeXus-32
- Page 1 NeXus-32 User Manual 92-0208-0002-0-5 REVISION 5 2015 Version 2.0...
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Page 2: Table Of Contents
Patient connections ....................13 Trigger input ......................14 Device label ....................... 14 Instructions for Use ..................15 Software ........................15 Powering the NeXus-32 ................... 15 Transfer data to PC ....................16 Perform measurement ..................... 19 Mobility ........................20 Operational principles ................... 21 Unipolar input channels .................. -
Page 3: Service And Support
1. Service and support 1.1 About this manual This manual is intended for the user of the NeXus-32 system – referred to as ‘product’ throughout this manual. It contains general operating instructions, precautionary measures, maintenance instructions and information for use of the product. Read this manual carefully and familiarize yourself with the various controls and accessories before starting to use the product. -
Page 4: Safety Information
2. Safety information This section contains general warnings, explanation of markings, limitations of use, safety measures, and precautionary measures that are important for the safe use of the product. 2.1 Explanation of markings This section explains the various markings and symbols used with the product. Manual contains important safety information Attention: read important safety information Important information / guidance for use... -
Page 5: Limitations Of Use
2.2 Limitations of use Limitations of use • Under federal law (only applicable to the USA) this product may only be sold by or on the order of a physician or licensed practitioner. • The product may only be used under the constant supervision of or on the instructions of a physician or other authorized medical professional. -
Page 6: Safety Measures And Warnings
2.3 Safety measures and warnings Warnings • IEC60601-1 compliance is the responsibility of the end user. To ensure compliance to IEC60601-1, the system must meet the following conditions: 1. The PC and peripherals (e.g. USB hubs) must comply with IEC60950 or equivalent, and must be located outside the patient environment (the patient environment is defined as the area within 1.5 m (6 ft around and 7.5 ft above) of the patient;... -
Page 7: Precautionary Measures
• Do not incinerate any part of the product. • If any liquids or moisture penetrate the product or any part thereof, remove the batteries from the device; and remove the plug from the wall socket and have the product checked by the manufacturer. •... -
Page 8: Disclosure Of Residual Risk
• Do not use an operating cellular phone within 50 cm of the device to avoid excessive noise on the signals. • Sharp bends or winding the cables in a loop smaller than 5 cm diameter may damage the cables. •... -
Page 9: Product Overview
Other accessories for electrophysiological measurements, such as headcaps, bipolar leads, unipolar leads etc. Refer to the documents supplied with those sensors for specific instructions for use. • Active accessories The device supports active sensors that are supplied by Mind Media. Supported sensors can be found on the website: www.mindmedia.com. -
Page 10: Intended Use
For ambulatory measurements the data can be stored on a Compact Flash disk within the NeXus-32. The card recording functionality is an add-on of the NeXus-32 that is to be ordered separately. The PCMCIA Card and Compact Flash Card may therefore not be present in your package. Instructions... -
Page 11: Nexus-32 Views
PATIENT Input for Patient leads; Unipolar, Bipolar, Auxiliary or Saturation ** CONNECTION(s) * The presence of this input depends on the configuration ** Type and number of patient lead inputs depend on the NeXus-32 configuration Back View Description Battery Cover... -
Page 12: User Interface
3.4 User interface On/Off Button When the device is solely powered by batteries, the device will switch on when the On/Off button is pressed shortly. When the device is transmitting data (via optical fiber or Bluetooth), the On/Off button acts as a Marker button. -
Page 13: Patient Connections
Patient Lead Connectors: Unipolar, Bipolar, Auxiliary, Saturation The number and type of inputs on your device depend on the configuration you have. NeXus-32 devices exist in different configurations. In general there are three types of patient connection inputs on the device: unipolar, bipolar or auxiliary. -
Page 14: Trigger Input
3.6 Trigger input The trigger input can be used to record a TTL trigger signal on the digital channel of the NeXus-32. The trigger input is isolated from all other inputs and the patient within the NeXus-32. -
Page 15: Instructions For Use
Follow the steps on screen. 4.2 Powering the NeXus-32 The NeXus-32 can be powered using batteries, via the mains power supply, or both. Mains power supply Mains Power Cable Check that the power supply is labeled as ‘SUP3’. -
Page 16: Transfer Data To Pc
After inserting of the power connector, the NeXus-32 starts up automatically. Battery The batteries should be placed in the battery compartment on the backside of the NeXus-32. Follow the steps below. STEP 1: Unscrew battery cover STEP 2: Remove battery cover... - Page 17 Wired transmission: Fiber to USB interface (Fusbi) 1. Connect the optical fiber to the input of the Fusbi and the other end to the fiber connector on the NeXus-32. It does not make a difference which connector goes where. 2. Connect the USB cable to the Fusbi and to a free USB port on the PC.
- Page 18 The serial number can be found on the back of the NeXus-32 on the silver label next to ‘SN’. In the figure displayed to the right the pairing code is 0018. Click Next to finish the Bluetooth setup.
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Page 19: Perform Measurement
Limited freedom of movement for Sampling rate may be limited due to patient limited bandwidth Increasing chance of data loss when distance between NeXus-32 and PC increases Measurement time limited OPTION 3: Fusbi and Battery OPTION 4: Bluetooth and Mains power supply •... -
Page 20: Mobility
For ambulatory measurements it is required to use a suitable carrying bag(REF 95-8020- Important 0001-0) with ingress protection rating IP02 instead of the carrying bag depicted above. This bag is to be ordered separately. Contact info@mindmedia.nl for more information and refer to the separate instructions for use for the ambulatory carrying bag. -
Page 21: Operational Principles
There is a 1st order low pass filter before the ADC with a -3db point at 4,8kHz. The ADC of the NeXus-32 has a digital sinc3 filter with a cutoff frequency of 0.27 * sample frequency. The device has a maximum sampling rate of 2048 Hz. Device specific technical specifications can be found in chapter Besides above no other filtering is applied when using the fiber optic link. -
Page 22: Maintenance
6. Maintenance The product does not contain user serviceable parts. Maintenance is limited to regular cleaning. support@mindmedia.nl Repairs can only be performed by the manufacturer, contact in case the product needs to be repaired. Mind Media Support staff will determine whether a repair is required and possible. -
Page 23: Electromagnetic Guidance
Guidance and manufacturer’s declaration - electromagnetic emissions The NeXus-32 is intended for use in the electromagnetic environment specified below. The customer or the user of the NeXus-32 should assure that it is used in such an environment. - Page 24 Guidance and manufacturer’s declaration – electromagnetic immunity The NeXus-32 is intended for use in the electromagnetic environment specified below. The customer or the user of the NeXus-32 should assure that it is used in such an environment. Immunity IEC 60601 test...
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Page 25: Technical Specification
Continuous operation Electric shock Mains power supply: Class I protection Applied parts: Class CF • The outside enclosure of the NeXus-32, also after removal of the Applied parts battery cover including all contacts and receptacles. • The patient accessories. Accessible parts The accessible part of the NeXus-32 is its power supply enclosure. - Page 26 Power Saving 5 minutes (no connection to PC or running ambulatory recording) Battery low 6.2 V ± 0.1V indication level Battery empty shut 5.9 V ± 0.1V down level Bluetooth Communication Bluetooth 1.1 class 2 Profile Serial port profile Range 10 meters (line of sight) Baud rate 230400 bps...
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Page 27: Nexus-32-B
8.1 NeXus-32-B Type NeXus-32–B REF code 95-0208-2000-2 Unipolar ExG inputs (EEG, ECG, EOG, EMG etc.) RMS Noise <1 µV (@lowest sample frequency) Gain 20 x Input signal difference -150 mV to +150 mV (@ 0 V common signal) Input common mode range -2 V to +2 V (@ 0 V differential signal) Input impedance >... - Page 28 Channel list: name function resolution range ExG1 Unipolar input 1 0.0715 µV -150mV to +150mV ExG2 Unipolar input 2 0.0715 µV -150mV to +150mV ExG3 Unipolar input 3 0.0715 µV -150mV to +150mV ExG4 Unipolar input 4 0.0715 µV -150mV to +150mV ExG5 Unipolar input 5 0.0715 µV...
- Page 29 Bluetooth supported sample frequencies/channel rates: channel Bluetooth channel rate @ base sample frequency: name 2048 Hz * 1024 Hz * 512 Hz ** 256 Hz 128 Hz ExG1 ExG2 ExG3 ExG4 ExG5 ExG6 ExG7 ExG8 ExG9 ExG10 ExG11 ExG12 ExG13 ExG14 ExG15 ExG16...
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Page 30: Nexus-32-F
8.2 NeXus-32-F Type NeXus-32–F REF code 95-0208-4443-3 Unipolar ExG inputs (EEG, ECG, EOG, EMG etc.) RMS Noise < 1 µV (@ lowest sample frequency) Gain 20 x Input signal difference -150 mV to +150 mV (@ 0 V common signal) - Page 31 Channel list: name function resolution range ExG1 Unipolar input 1 0.0715 µV -150mV to +150mV ExG2 Unipolar input 2 0.0715 µV -150mV to +150mV ExG3 Unipolar input 3 0.0715 µV -150mV to +150mV ExG4 Unipolar input 4 0.0715 µV -150mV to +150mV ExG5 Unipolar input 5 0.0715 µV...
- Page 32 Bluetooth supported sample frequencies/channel rates: channel Bluetooth channel rate @base sample frequency: name 2048 Hz * 1024 Hz * 512 Hz ** 256 Hz 128 Hz ExG1 ExG2 ExG3 ExG4 ExG5 ExG6 ExG7 ExG8 ExG9 ExG10 ExG11 ExG12 ExG13 ExG14 ExG15 ExG16 ExG17...
- Page 33 Exclusively manufactured by TMSi for Mind Media B.V. Copyright © 2017 Mind Media B.V. All rights reserved. www.mindmedia.com...
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