QEEG-64FX

1.QEEG-64FX

QEEG-64FX

Ultra High Precision 64ch EEG System.

Features

EEG Channel Options : from 8ch to 64ch.
- ( 8ch, 16ch, 24ch, 32ch, 40ch, 48ch, 56ch, 64ch )
Monoplar 64 ch : EEG, Selectable EEG Reference A1, A2,A1+A2, Cz.
Bipolar 3 ch : EOG, ECG, EMG can be measured.
Ultra Low Noise : ~0.2uVrms @ 250Hz , ~0.5uVrms @ 2,000 Hz
Wide Band Signal : DC(0Hz) ~ 1,000 Hz
High Resolution Digitizing : 24bits
High Sampling Frequencies : 250Hz/500Hz/1,000Hz/2,000Hz
Adjustable Signal Filters.
Electrode-Skin Contact.
Electrode-Skin Impedance
Auto Calibration : gain uniformity, zero adjustments dc-offsets.
Auto Remote Software Update.
Auto Remote Firmware Update.
Both EEG Cap Electrodes and Disk Electrodes can be used.
Low Power, Portable, Easy Maintenance, Easy Operations.
Completely Integrated with TeleScan S/W.
Custom user application S/W developing available by using LXDeviceAPI.
Medical Certified.

1.1.Device Function Block Diagram

Device Function Block Diagram

1.2.Demension

QEEG-64FX SIZE

Front

Demension Front

Side

Demension Side

QEEG-64FX Details

1. Electrode connection connector: It is a connector to connect disk electrode and snap electrode.

Demension Front 1

2. USB cable connection connector: It is a connection connector for connecting the USB port of the computer for communication between the computer and the device.

Demension Side 1

3. USB adapter connection connector: It is a USB adapter connection connector.
When measuring more than 40 channels, connect external power adapter.

[Caution] After connecting the EXT.POWER cable, connect the USB DATA cable. If the order is reversed, the product may malfunction.

Demension Side 2

4. EEG CAP connection connector: Connection connector to connect EEG CAP. Compatible gender is a separate purchase item. If you wish to purchase, please contact the place of purchase.

Demension Side 3

1.3.Device I/O Connector

Device I/O Connector

Signal Number	100-Pin Connector Pin Number	Signal Number	100-Pin Conncetor Pin Number
reserved	51	1	ECGP
reserved	52	2	ECGN
reserved	53	3	EOG1P
reserved	54	4	EOG1N
reserved	55	5	EOG2P
reserved	56	6	EOG2N
reserved	57	7	reserved
reserved	58	8	reserved
CH64	59	9	CH62
A2	60	10	CH2
CH34	61	11	CH4
CH36	62	12	CH6
CH38	63	13	CH8
CH40	64	14	CH10
CH22	65	15	CH42
CH24	66	16	CH44
CH26	67	17	CH46
CH48	68	18	CH12
CH50	69	19	CH14
CH28	70	20	CH16
CH30	71	21	CH52
CH32	72	22	CH54
CH58	73	23	CH56
CH60	74	24	CH18
Body-Driver	75	25	CH20
CH61	76	26	CH19
CH59	77	27	CH17
CH57	78	28	CH55
CH31	79	29	CH53
CH29	80	30	CH51
CH27	81	31	CH15
CH49	82	32	CH13
CH47	83	33	CH11
CH25	84	34	CH45
CH23	85	35	CH43
CH21	86	36	CH41
CH39	87	37	CH9
CH37	88	38	CH7
CH35	89	39	CH5
CH33	90	40	CH3
A1	91	41	CH1
reserved	92	42	CH63
GNDA (Analog Power)	93	43	GNDA (Analog Power)
reserved	94	44	+5VA (Analog Power)
GNDD (Digtal Power)	95	45	GP107
GNDA (Analog Power)	96	46	GP106
SDA	97	47	GP105
SCL	98	48	GP104
GP100	99	49	GP103
GP101	100	50	GP102

1.4.Specifications

Amplifier

Number of Channels	Mono-polar, 64ch (Max) – EEG Bipolar, 3ch – EOG, ECG, EMG, user defined
Option for Maximum EEG channel	8ch, 16ch, 24ch, 32ch, 40ch, 48ch, 56ch, 64ch
Reference Selections	Above EEG 24 ch : – A1, A2, (A1+A2)/2, Cz(CH18) Below EEG 16 ch : – A1, A2, (A1+A2)/2
Input Range	± 0.36 V for all channels
Input Impedance	> 300 Mohm
Internal Noise	< 0.2 uVrms
CMRR	> 100 dB
Input Error	< ±1%
Input Coupling	DC (@ High Pass Filter Off)
Gain Calibration	Yes
DC Offset Calibration	Yes

Impedance

Leadoff Check	Real-time monitoring Lead ON – Active : Green LED ON – Reference : Blue LED ON Lead OFF – Active : Purple LED ON – Reference : Purple LED ON(selected), LED OFF(non-selected)
Leadoff Detection type	DC
Impedance Meas. Type	AC (62.5Hz)
Impedance Meas. Range	0 ~ 200 kohm
Impedance Error	±10%

Filter

High Pass Filter, -3dB	Off, 0.1Hz, 0.5Hz, 2.5Hz, 12.5Hz, 25Hz, for all sampling frequency, User selectable
Low Pass Filter, -3dB	25Hz, 50Hz, off (@ 250Hz sampling freq.) 50Hz, 100Hz, off (@ 500Hz sampling freq.) 100Hz, 200Hz, off (@ 1kHz sampling freq.) 200Hz, 400Hz, off (@ 2kHz sampling freq.)
Notch Filter, fc	50/60 Hz(on/off user selectable)
Attenuation	> 50dB

Analogue to Digital Conversion

Resolution	24 bits
Sampling frequency	250, 500, 1k,2k sps/ch ; user selectable
Sampling frequency error	± 50 ppm

Interface

Interface

USB 2.0

Input/Output Connector

Input Connector	100-pin. I/O connector
Computer Interface Connector	USB-B type

Demension

Size	150(W) X 150(H) X 32(D) , mm
Weight	700 g

Electric property

Supply Power	+5 VDC (from USB Power)
Consumption current	8ch: Below 230 mA 16ch: Below 250 mA 24ch: Below 275 mA 32ch: Below 300 mA 40ch: Below 325 mA 48ch: Below 350 mA 56ch: Below 375 mA 64ch: Below 400 mA

Operating environment

Temperature	10 ~ 40 ℃
Humidity	30 ~ 80 %

Transportation and storage environment

Temperature	-20 ~ 60 ℃
Humidity	20 ~ 90 %

Specification. download or view online.

1.5.Medical Certification

QEEG-64FX is approved as a medical device. It can be used as medical purposes.

Medical Device Certified Products (KFDA)
the certificated number : 18-4287
Classification code
– Electroencephalogram : A26150.01, 2
– Medical biofeedback device : A30080.01, 2

QEEG-64FX. KFDA Medical Device Certification. download or view online.

2.Installation

QEEG-64FX Installations.

QEEG-64FX PC USB

2.1.Hardware Installation

1. Connect device to computer: Place the device in a well-selected location. Place the bottom of the unit on a flat surface so that the unit does not slip well. The bottom of the unit is equipped with anti-slip feet.

Step

Connect the USB cable to the device.

Step

Connect the USB cable to your computer.

[Caution]
After connecting the EXT.POWER cable, connect the USB DATA cable. If the order is reversed, the product may malfunction.

Hardware-Installation

2.2.Device Driver Auto Installation

Since QEEG-64FX’s Windows device driver has received WHQL certification from MS company, if user connects QEEG-64FX to PC without USB driver installation, driver installation process is automatically
started by connecting to MS server .

Installing Device Drivers: When you connect your device to your computer, the Device Driver Software Installation screen appears in the lower right corner. The time for installing the device driver varies depending on the computer environment and specifications.

Device Driver Auto Installation 1

[Caution]

Wait for the three drivers to complete the installation. Once the watch shape prototype is removed, the installation is complete.

Installed status can be checked in [Control Panel – Hardware and Sound – Devices and Printers].

Device Driver Auto Installation 2

2.3.Device Driver Manual Installation

In the following situations, the user must manually install the device driver manually.

[ If you need to manually install the QEEG-64FX device driver ]
1) PC is not connected to the Internet.
2) There is a problem with the automatic installation process depending on the user’s
PC environment and the Internet environment.
An example of a problem situation.
– The drive installation process (screen below) is automatically completed within one minute after the QEEG-64FX is connected to the PC, but the driver installation does not take more than five minutes to complete. If this situation is occur, Device Drivers should be manually installed.

Device Driver Manual Installation 1

[ How to Install QEEG-64FX Device Drivers Manually ]
– The following procedure can be performed only once on a PC, using the device.
Step1. State of QEEG-64Fx’s USB not connect to PC.
Step2. Disable automatic installation function of device driver on PC.
Step3. QEEG-64FX Device driver install manually.
Step4. After Step3), When QEEG-64FX is connected to PC via USB, normal recognition
of QEEG-64FX is handled on PC.
Step5. Return the settings that were disabled in Step2) to the original state.
– To restore User PC environment to its original state.

[ Detail of Step2 and Step3 ]

Detail of Step2 . Disable automatic installation function of device driver on PC.

[ How to disable automatic installation function of device drivers in Windows 7 ]

[Start – Right click on the computer – Properties], the system window will pop up as
shown below.
Click System Settings on the left side of the system window to open the System
Properties window.

Device Driver Manual Installation 2

If you click the [Hardware – Button “Device Installation Settings]” tab in the System Properties window, the device installation settings will appear as shown in the figure below.
Select the option “No, I will choose the task myself” and select the red box with the detailed options “Do not install the driver software on Windows Update.”

Device Driver Manual Installation 3

[ How to disable the automatic installation fucntion of device drivers in Windows 8 / 8.1 / 10 ]

Click the [Start – Right click on the computer – Properties], the system window will pop up as shown below. Click on “Advanced System Settings” on the left side of the system window and the “System Properties” window will appear.

Device Driver Manual Installation 4

Select “No” in the “Device Installation Settings” (shown below) by clicking the button device installation setting in the above picture, and save the changes.

Device Driver Manual Installation 5

Detail of Step3 . How to install the device driver manually.

Device Driver Installer program : CDMxxxxx_Setup.exe(xxxxx is the version number and the number may vary from installation to installation.)
Device driver installer program path : TeleScan installer path -> folder LXDeviceAPI_Utility -> Driver -> LXDeviceStream
(As shown in the figure below, the path that is visible in Windows Explorer)

Device Driver Manual Installation 6

Double click “CDMxxxxx_Setup.exe” to execute.

Click “Extract” Button on the first screen.

Device Driver Manual Installation 7

Click the Next button.

Device Driver Manual Installation 8

Select “I Agree” and click the “Next” button.

Device Driver Manual Installation 9

Click the “Finish” button.

Device Driver Manual Installation 10

Step3. When finished, connect QEEG-64FX to PC and QEEG-64FX will be recognized automatically from PC.

2.4.TeleScan Installation

Download the TeleScan setup program and then double click the exe file.

Setup TeleScan

TeleScan

2.5.TeleScan Device Selection. QEEG-64FX

TeleScan supports various devices, you should select QEEG-64FX. Following video shows how to select the QEEG-64FX.

2.6.TeleScan Simple Testing for QEEG-64FX

You can check that the signals from QEEG-64FX. Following video shows simple testing for QEEG-64FX.

Checking test signal
Checking input short signal
Changing the Sampling Frequency

2.7.Electrode Connection

Electrode Connection.

Electrode Connection 1

Attaching the electrodes to skin.

Electrode Connection 2

Video : QEEG-64FX’s LED display shows the electrode-skin contact.

2.8.EEG Cap Electrode Connection

EEGCap_QEEG-64FX_Connection

Available cap electordes with QEEG-64FX

64 channel EEG Cap.

32 channel EEG Cap.

16 channel EEG Cap.

Gender for connecing EEG cap and QEEG-64FX.

model : LXCON640

3.Feature Details

3.1.Device Control Panel

When the device is open in the software, the QEEG-64FX Device Control window opens on the right and bottom of the screen.

Open the QEEG-64FX Device in the TeleScan

3.2.Auto Calibration

Click the button “Auto Calibration” in the instrument control window to display the full-screen accuracy. Three items: Gain Uniformity (Gain Uniformity of Amplifier), DC Offset (Internal Input Short) – Amplifier offset in internal input short), DC Offset (Test Signal) – Offset of device internal square wave, DC Offset (External Input Short) – Shows the offset of the external input short circuit for all channels.

QEEG-64FX Device Control Auto Calibration 1

When the initial screen is displayed, only the Gain Uniformity and DC Offset (Test Signal) are displayed in real time. Select the data type to be viewed in the View Selection, and click the View button, change to the corresponding information view.

If the calibration status is not good, the gain of each channel is not uniform, the offset voltage is large, and the characteristics of each channel are different as shown in the following example screen.

QEEG-64FX Device Control Auto Calibration 2

Button Start Calibration

If you click “Start Calibration” button at the top of the screen, the calibration process will start from channel 1 of Gain Uniformity and the process will be completed to channel 35 of the final DC Offset (External Input Short).
If LXCON01, which is a separate device that short-circuits all external input channels of the device, is connected to the input connector of the device, automatic compensation is performed until the final DC Offset (External Short). If LXCON01 is not connected to the device input connector, It goes to DC Offset (Test Signal) and completes the entire calibration process.

[Calibration processing completed status. (Total travel time within 2 minutes)]

3.2.1.Auto Calibration

Before Auto Calibration

Completed Auto Calibration

3.3.Impedance

Click the “Impedance” button on the instrument control panel and the Impedance window (shown below)is displayed at the bottom of the software.

QEEG-64FX Device Control Panel Impedance 1

Impedance Window Indications

1) Bar: Impedance between each electrode connected to human body and GND electrode is expressed as height. (Unit: k Ω)
2) Background color – green: Voltage accuracy during bioelectrical potential measurement is less than 0.1%.
3) Background color – purple: This means that the voltage accuracy is not guaranteed by 0.1% when measuring the bioelectrical potential.
4) The QEEG-64FX must have an impedance of less than 100k Ω for precise measurement of the vital potential voltage.

Impedance measurement example.

QEEG-64FX Device Control Panel Impedance 2

3.4.EEG Reference Selection

3.5.Filter Selection

QEEG-64FX Device Control Filter Selection

It can be individually applied to each signal group and can be selected according to the frequency of the measurement target.

High Pass Filter

0Hz,0.1Hz, 0.5Hz, 2.5Hz, 12.5Hz, 25Hz.

0Hz is a mode that does not apply HPF and includes DC component.

HPF Detailed characteristics for each frequency: See Appendix A.

Low Pass Filter

Sampling frequency	LPF frequency
250Hz	12.5Hz, 25Hz, 50Hz, off
500Hz	25Hz, 50Hz, 100Hz, off
1000Hz	50Hz, 100Hz, 200Hz, off
2000Hz	100Hz, 200Hz, 400Hz, off

Typical filter selection by measurement target.

– The table below is a typical example and can be changed according to the purpose of experiment.

Measurement target	HPF	LPF
EEG Spontaneous Potential	0.5Hz, 2.5Hz	More than 50Hz
EOG	0.1Hz	12.5Hz
ECG Simple monitoring	2.5Hz	25Hz
ECG Waveform Details	0.1Hz, 0.5Hz	More than 100Hz
EMG	12.5Hz, 25Hz	More than 400Hz