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Single Channel EEG Test System | User Manual

8

If

SEEG software can’t be executed properly or this is the first time using 

WhaleTeq product, please refer to section 2.1.3 and 2.1.4 to confirm that
USB driver and Microsoft .Net Framework 4.0 are all installed.

2.1.3 First Time Using WhaleTeq Product - USB Driver Installation

If Windows device manager can’t recognize WhaleTeq product, please follow 

the below instructions to Install Microchip® USB driver. 

Microsoft Windows 10  

As Windows 10 has built-

in Microchip® USB Driver, there’re no needs to install 

any drivers. It just takes a while for Windows Device manager to recognize and 
install the driver.  

Microsoft Windows 8 and Windows 8.1 

Windows 8 and Windows 8.1 can’t recognize S

EEG unit, please download 

mchpcdc.inf

 from WhaleTeq website. This driver is provided by 

Microchip® for using with PIC microprocessors having built-in USB 
function.

As mchpcdc.inf provided by Microchip® does not contain digital signature, 
please disable driver signature enforcement in Windows 8 and Windows 
8.1. Please click 

here

to watch the tutorial video.

When the USB module is connected for the first time, select manual 
installation, and point to the folder containing the above file. Then 
continue to follow the instructions to finish the installation. There may be 
a warning that the driver is not recognized by Windows®, and this can be 
ignored. Please click 

here

to watch the tutorial video.

Microsoft Windows 7 

Windows 7 can’t recognize 

SEEG

unit, please download “

mchpcdc.inf

” 

from WhaleTeq website. This driver is provided by Microchip® for using 
with PIC microprocessors having built-in USB function.

Summary of Contents for SEEG 100E

Page 1: ...Single Channel EEG Test System User Manual 1 WHALETEQ Single Channel EEG Test System SEEG 100E User Manual Revision 2020 10 21 PC Software Version 1 0 5 10 ...

Page 2: ...4 First Time Using WhaleTeq Product Microsoft Net Framework 4 0 Installation 9 2 2 Connecting to the EEG 9 2 3 Environment noise reduction 10 2 4 Main screen 11 2 5 Description of Functional groups 12 2 5 1 Main function main waveform 12 2 5 2 Main parameters 13 2 5 3 DC offset setting 13 2 5 4 Input impedance test 14 2 5 5 Output lead electrode 14 2 5 6 Output graphic display 14 2 5 7 Special fun...

Page 3: ... offset and relay switching to provide the full range of single channel performance tests in IEC standard The basic range of tests in the standards include for example Sensitivity accuracy of the μV mm indication Frequency response sine wave and impulse tests Input impedance Noise For a full list of tests refer to the standard together with Section 1 2 The limitations of the system are as below Ex...

Page 4: ...012 201 12 1 201 12 1 all performance tests except 201 12 1 104 input noise and 201 12 1 106 CMRR tests General limitation 1 This equipment is designed for use with isolated EEG circuits as are generally provided for medical EEG If applied to a non isolated circuit the noise may be excessive 2 In EEG breakout box there are 22 terminals But there are only 9 terminals could output waveforms the rest...

Page 5: ...tem inside the SEEG 100E module Additional input to allow connection to an external function generator Precision divider ensures that 1V in 2mV out 0 2 Connects to the PC via USB 2 0 GND for noise reduction Allows monitoring of the applied signal pre divider 1V 2mV output 500 1 Divider 50KΩ 0 1 500 1 Divider 50KΩ 0 1 Precision dc offset 150mV ...

Page 6: ... 1 DC offset variable may include up to 50µVpp noise Setting 1 or 3mV Power supply USB 5Vdc supply no separate power supply required 0 5A high power mode Environment 15 30 C by design not tested 30 80 RH design not tested Safety EMC standards No applicable safety standards maximum internal voltages 12Vdc For EMC no testing performed CE marking based on careful selection of parts including USB prot...

Page 7: ...e Download SEEG software from WhaleTeq website Browse to the download location Unzip the file to your destination folder Click the installation file in the destination folder to initiate the installation process When the installation is completed SEEG software would be executed automatically User can also execute SEEG software via selecting All Programs WhaleTeq WhaleTeq SEEG in Windows startup pr...

Page 8: ...n t recognize SEEG unit please download mchpcdc inf from WhaleTeq website This driver is provided by Microchip for using with PIC microprocessors having built in USB function As mchpcdc inf provided by Microchip does not contain digital signature please disable driver signature enforcement in Windows 8 and Windows 8 1 Please click here to watch the tutorial video When the USB module is connected f...

Page 9: ...eck whether Microsoft Net Framework 4 0 or higher versions was installed in the operation system If your PC does not install Microsoft Net Framework 4 0 or higher versions please download from Microsoft website Please click here to watch the tutorial video from 2 03 2 2 Connecting to the EEG For connecting the EEG device to the SEEG 100E and use the provided 22 channels EEG breakout box There are ...

Page 10: ...is set up turn the EEG device under test to maximum sensitivity turn off the ac filters if possible and confirm that the level of noise is acceptable for tests For most tests this set up is satisfactory without any special efforts However for the input impedance test with the 620kΩ is in series the imbalance in impedance can cause high noise For this test the ac filter may be turned on If the nois...

Page 11: ...gle and triangle pulse only time constant for hysteresis only 05 DC offset setting 06 Select if 620kΩ 4 7nF is in circuit for input impedance test 07 Select the lead electrode which the output is switched to Ch1 Ch9 08 Special functions 09 Select PhysioNet EDF format waveform and download directly from Internet 10 Load text and binary format waveforms from local 11 Provide a semi real time graphic...

Page 12: ...re wave according to the amplitude in mVpp and frequency Hz Rectangle pulse A rectangular pulse according to the amplitude setting pulse width and pulse repetition rate frequency Hz Triangle pulse A triangle pulse according to the amplitude setting base pulse width and pulse repetition rate frequency Hz Hysteresis Exponential waveform used for hysteresis test set amplitude to 0 5mV time constant 5...

Page 13: ...For triangle pulses the setting matches the base of the triangle pulse For exponential pulse the set pulse width is time constant Pulse width can be set to down to 2ms3 2 5 3 DC offset setting This function allows the operator to switch in a dc offset In the default condition not variable only 150mV 0 or 150mV can be set In this mode the dc offset is sourced from an internal super capacitor which ...

Page 14: ...t which lead electrode the output is connected to i e terminal P1 in the IEC 80601 2 26 2019 Figure 201 104 Unselected electrodes are connected to the system ground terminal P2 in Figure 201 104 More than one lead electrode may be selected 2 5 6 Output graphic display The output display provides an image similar to that provided by EEGs The sensitivity of the display range may be set at 0 1mm µV 0...

Page 15: ...ue input at BNC1 is provided to allow testing with analogue type function generators 2 5 8 Special waveforms and load waveform There are two features on the bottom right frame Special Waveforms and Load waveform For these two features the amplitude and frequency settings have no effect Special Waveforms WhaleTeq SEEG can play PhysioNet waveforms with 1 electrode at each time This feature will down...

Page 16: ... Binary files bin Bytes 1 2 are sample rate Hz Bytes 3 6 are number of samples Following bytes are samples 2 bytes per sample all data is big endian high byte first 2 s compliment EDF files edf This is a commonly used but complicated format Here for the format details 2 6 IEC 80601 2 26 Helper It is a companion software add on to enhance the function of SEEG 100E It supports the latest EEG standar...

Page 17: ...may be limited depending on the needs of the laboratory As the calibration procedure is complicated a software assisted calibration mode is provided The software sets up the SEEG as required for the particular tests and instructs the user on what measurement to make e g measure resistance between ch1 and ch2 The user then enters the results into the form provided and the software checks if the res...

Page 18: ...io 50kΩ 100Ω 500 1 0 1 Resistance values are specified as 50kΩ and 100Ω 0 1 but these cannot be verified once in circuit An alternate method is used to verify the accurate ratio Set up a 2mVpp 0 1Hz square wave to output ch1 Using the Fluke 8845A or equivalent precision meter measure and record the peak to peak voltage at BNC2 by zeroing during the negative cycle and measuring at the positive cycl...

Page 19: ...ischarge after 10min Tests in the standard are typically less than 2 minutes DC variable Setting 5mV or 1 Use the following procedure Set the equipment to Off Select the Variable checkbox Set to 200mV dc offset Confirm the value is 200 5mV Repeat for 600 1000 200 600 and 1000mV Output frequency Setting 1 Method Set up 1mVpp 10 40Hz sine wave Measure the frequency at BNC2 using any appropriate mete...

Page 20: ...dule for 2s 3 Reconnect the USB module 4 Wait for the recognition sound 5 Start WhaleTeq software SEEG 100E module stops responding Move the main function mode to Off and then return to the function being used If this does not work close WhaleTeq software disconnect the SEEG 100E module reconnect the SEEG 100E module and re start the SEEG 100E module 4 Contact details WHALETEQ Co LTD service whale...

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