photic Stimulator User Manual Issue 2.0 June 2020 PDF download

Stimulator USER MANUAL

Imagine EEG Anywhere

Lifelines Ltd, 7 Clarendon Court, Over Wallop, near Stockbridge, Hampshire SO20 8HU, UK Telephone +44 (0)1264 782226 www.LLines.com [email protected]

Incereb Ltd. 3015 Lake Drive, Citywest Dublin D24 DKP4, Ireland

No:

51331-006

Part No:

1240

Issue:

2.0

CCN:

CCN126

Created

Digitally signed by Geoff Salter Date: 2020.04.22 10:44:48 +01'00'

Checked

Digitally signed by David Hulin DN: cn=David Hulin, o=Lifelines Ltd, ou=Development, [email protected], c=GB Date: 2020.06.15 14:25:49 +01'00'

Approved

Digitally signed by Geoff Salter Date: 2020.06.15 14:30:36 +01'00'

USER MANUAL

Customer Responsibility

Customer Responsibility The Photic Stimulator is reliable only when operated and maintained in accordance with the instructions contained in this manual, accompanying labels, and inserts. A defective system should not be used. Parts that may be broken or missing or those that are clearly worn or contaminated should be replaced immediately with new original replacement parts that have been manufactured by or are available from Lifelines. The owner of this system has the sole responsibility for any malfunction resulting from improper use or maintenance, or repair done by anyone other than a qualified Lifelines representative and for any malfunctions caused by any parts that have been damaged or modified by anyone other than a qualified Lifelines representative. The owner of this system has the sole responsibility for the connection of this product to other systems which do not satisfy the electrical safety requirements of standards IEC 60601-1 and IEC 60601-1-2 for medical devices.

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Disclaimers & Warranties Safety

Disclaimers & Warranties The information in this section is subject to change without notice. Except as stated below, Lifelines makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Lifelines shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance or use of this material. Lifelines shall warrant its products against all defects in material and workmanship for one year from the date of delivery. Misuse, accident, modification, unsuitable physical or operating environment, improper maintenance or damage caused by a product for which Lifelines is not responsible will void the warranty. Lifelines do not warrant uninterrupted or error-free operation of its products. Lifelines or its authorised agents will repair or replace any products that prove to be defective during the warranty period, provided that these products are used as prescribed in the operating instructions in the user’s and service manuals. No other party is authorised to make any warranty to assume liability for Lifelines products. Lifelines will not recognise any other warranty, either implied or in writing. In addition, services performed by someone other than Lifelines or its authorised agents or any technical modification or changes of products without Lifelines prior, written consent may be cause for voiding this warranty. Defective products or parts must be returned to Lifelines or its authorised agents, along with an explanation of the failure. Shipping costs must be prepaid. Lifelines manufactures hardware and software to be used on or with standard PC-compatible computers and operating software. Lifelines, however, assumes no responsibility for the use or reliability of its software or hardware with equipment that is not furnished by third-party manufacturers accepted by Lifelines at the date of purchase. All warranties for third-party products used within the Photic Stimulator system are the responsibility of the relevant manufacturer. Please refer to the relevant documentation on each product for further details. This document contains proprietary information that is protected by copyright. All rights are reserved. No part of this document may be photocopied, reproduced in any other form or translated into another language without the prior written consent of Lifelines.

Trademarks Microsoft, Windows and Windows NT are registered trademarks of the Microsoft Corporation. All other trademarks and product names are the property of their relevant owners.

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Disclaimers & Warranties

Responsibility of manufacturer The manufacturer and distributor consider themselves responsible for the equipment’s safety, reliability and performance only if: y any peripheral equipment to be used with the Photic Stimulator is supplied by third-party providers recommended by the manufacturer; y assembly operations, extensions, readjustments, modifications, or repairs are carried out by person authorised by the manufacturer; y the electrical installation of the relevant room complies with the appropriate requirements; y the equipment is used by a healthcare professional and in accordance with the instructions for use. NOTE: the manufacturer has a policy of continual product improvement; hence the equipment specifications are subject to change without notice. Check with Lifelines or your distributor if a software update is available.

NOTE: Medical electrical equipment needs special precautions regarding EMC and needs to be installed and put into service according to the EMC information provided in the Appendix.

Software and Virus Protection Lifelines takes all reasonable steps to ensure that its software is virus-free. In line with modern computing practice, it is advisable that continual protection against viruses, Trojans, malware, adware etc. is provided on the PC used for installation and the surrounding systems. Please note the following recommendations which should be supported by your internal IT/Computing department procedures and practices: 1. Virus protection software should be installed on every computer at risk of infection. This software should have a resident (online) shield and provide email scanning if appropriate. 2. Virus scanning should be set to manual mode or automatic if desired but at a time when the system is not being used. 3. All programs offering auto-update features, including Windows, should be set to manual or automatic if desired but at a time when the system is not being used. 4. Adopt formal departmental or organisational procedures to ensure the integrity and safe operation of the medical equipment and supporting systems.

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USER MANUAL

Contents Disclaimers & Warranties��2 1

2

System Overview�� 6 1.1

Warnings & Cautions:��6

1.2

Explanation of symbols��7

1.3

The system and its parts�� 8

1.4

Specifications and safety�� 9

1.5

Description of the components�� 10

Installation and Maintenance��12 2.1

Checks for completeness and integrity��12

2.2 Environmental parameters for operation��12 2.3 Power supply connections�� 13 2.4 Use with other equipment�� 13 2.5 Interference�� 13 2.6 Maintenance and cleaning�� 14 2.7 Disposal of equipment�� 14

3

Connections for Photic Stimulator setup��15 3.1

Overview�� 15

3.2 Connecting the Photic Stimulator�� 16 3.3 Switching on��17

4

Photic Stimulator Setup Software��18 4.1

Installation�� 18

4.2 Overview�� 18 4.3 Manual Stimulation�� 20 4.4 Sweep Stimulation�� 20 4.5 Complex Stimulation�� 22 4.6 Setup 1�� 23 4.7 Setup 2�� 25 4.8 Shutdown procedure�� 26

Version History��35

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Appendices Appendix 1: Photic Stimulator Specifications��27 Appendix 2: Connection Details�� 29 Appendix 3: Manufacturer’s Declaration�� 31

Illustrations Figure 1: Connecting the Photic Stimulator...15 Figure 3: Photic not connected (Manual Stimulation)...18 Figure 4: Photic connected (Manual Stimulation)...19 Figure 5: Photic connected and running (Manual Stimulation)...19 Figure 6: Sweep Stimulation...20 Figure 7: Sweep Stimulation setup... 21 Figure 8: Complex Stimulation... 22 Figure 10: Setup 1...23 Figure 11: Setup 2...25 Figure 11: Shutdown Procedure...26

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System Overview

1

System Overview

1.1

Warnings & Cautions: Warning sign indicates a situation or procedures that may be dangerous for the patient and/or user.

Caution sign indicates a situation or procedures that may cause equipment damage or its improper usage.

The Photic Stimulator must only be used by a healthcare professional, within a hospital or clinical setting, who has the training and knowledge to undertake EEG examinations and is familiar with EEG equipment and practice. This user manual must be read in its entirety before the equipment is used. There is a small risk that photic stimulation can induce a seizure in photosensitive patients. For this reason photic stimulation should only be carried out with strict adherence to an approved photic stimulation protocol. The methods used in the protocol should maximize the probability of eliciting abnormal responses in patients with photosensitive epilepsy, while minimising the chances of inducing such a response in others or of precipitating a seizure during testing. Bystanders should be excluded from the treatment area. Do not modify this equipment without the authorization of the manufacturer. The use of accessories, transducers and cables other than those specified, with the exception of transducers and cables sold by the manufacturer of the equipment as replacement parts for internal components, may result in increased emissions or decreased immunity of the equipment The equipment or system should not be used adjacent to or stacked with other equipment and that if adjacent or stacked use is necessary, the equipment or system should be observed to verify normal operation in the configuration in which it will be used. Portable RF communications equipment (including peripherals such as antenna cables and external antennas) should be used no closer than 30 cm (12 inches) to any part of the Photic, including cables specified by Lifelines Ltd. Otherwise, degradation of the performance of this equipment could result.

CONTRAINDICATIONS: 1. Patients whose known or possible diagnosis does not include epilepsy. 2. Patients with an established history of electroclinical events to photo sensitivity. 3. Patients with known epilepsy who have been seizure-free for some time.

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System Overview

1.2

Explanation of symbols Symbol

Description Follow operating instructions

Attention consult accompanying documentation

Input/output connection

Output connection

Off On

Manufacturer European Representative Special recycling required*

*

Special recycling required, do not dispose of in landfill. When this equipment has reached the end of its useful life, it must be disposed of in an environmentally-friendly way. Waste electrical and electronic equipment (WEEE) requires special procedures for recycling or disposal. This includes batteries, printed circuit boards, electronic components, wiring and other elements of electronic devices. Follow all of your respective local laws and regulations for the proper disposal of such equipment. Contact your local distributor for information concerning this.

Storage and transport symbols Symbol

Meaning

Symbol

Meaning

Temperature limits

Fragile

Relative humidity limits

Barometric pressure limits

Symbol

Meaning Keep dry

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System Overview

1.3

The system and its parts

The Photic Stimulator is a high performance solid-state flash stimulator used in the fields of Electroencephalography (EEG) and Visual Evoked Potentials.

The system comprises the following components: Component

Part Number

Photic Stimulator

1237

Photic USB Cable

1241

Photic User Manual

1240

Photic Setup S/W

1247

Photic Arm

1246

Customer registration form

1032

Optional components: Photic USB Splitter Cable

1243

Photic Ext. Trig Cable (Hirose connector)

1242

Photic Pwr+Ext. Trig I/P Cable (D-26HD)

1254*

Photic Pwr+Cntrl+Ext. Trig I/P Cable (D-26HD)

1265*

Photic Pwr+Cntrl+Ext. Trig I/O Cable (D-26HD)

1269

Photic D-26 BNC Adapter Cable

1260

Photic D-26 MiniDIN Adapter Cable

1270

Photic USB + Trig Cable (USB & BNC)

1261#

Photic Trigger Output Cable (Jack)

1248

Photic Trigger Output Cable (Touchproof)

1251

NOTE: * Both these cables are superseded by the ‘1269’ cable. #This cable is superseded by the ‘1269’ + ‘1270’ cables. NOTE: Part numbers may be preceded by ‘L14’ on labelling or packaging.

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System Overview

1.4

Specifications and safety

Electrical Safety and EMC The system has been certified and complies with the following standards Standard

Description

IEC 60601-1

Standard for medical electrical equipment, general requirements.

UL60601-1:2003

USA standard for medical electrical equipment, general re-quirements.

CAN/CSA 22.2 No 601.1 M90

Canadian standard for medical electrical equipment, general requirements.

IEC 60601-1-2

Standard for medical electrical equipment, EMC requirements, calling:

*CISPR11

Conducted Emissions, Group 1, Class B

CISPR11

Radiated Emissions, Group 1, Class B

IEC61000-4-2

Electrostatic Discharges

IEC61000-4-3

Immunity - Radiated RF Field

*IEC61000-4-4

Immunity - Transients Bursts

*IEC61000-4-5

Immunity – Surges

IEC61000-4-6

Immunity – Conducted

IEC61000-4-8

Immunity – Power frequency fields

*IEC61000-4-11

Immunity – Voltage dips, interruptions

*IEC61000-3-2

Harmonic Emissions

*IEC61000-3-3

Voltage Fluctuations/flicker

*Note: Compliance is provided by the PC. Classification Degree of protection against electrical shock:

No patient-applied parts, no accessible metalwork

Type of protection against electrical shock:

Class II device

Degree of protection against harmful ingress of water:

Ordinary (no protection).

Mode of operation:

Continuous.

Degree of safety of application in the presence of a flammable anaesthetic mixture with air or with oxygen or nitrous oxide:

Not suitable

Light Hazards The unit has been tested and is in conformance with the following requirements for optical radiation safety: Standard

Description

ISO 15004-2:2007

Light Hazard Protection, Group 1 instrument.

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USER MANUAL

System Overview

1.5

Description of the components

The Photic Stimulator The Photic Stimulator is a device for generating short-duration flashes of white light by means of a solid-state LED (light emitting diode). The flashes are controlled from a host PC and typically occur over a repetition rate of between 1 and 60Hz. Photic stimulation is used as a clinical routine in the field of Electroencephalography (EEG) and Visual Evoked Potentials. The visual stimulation is used to produce electrical responses in the brain of the patient. These signals are monitored and recorded by a separate piece of equipment. In EEG studies where epilepsy is typically being diagnosed, Photic stimulation is used to assess the patient’s photosensitivity, i.e. sensitivity to flashing lights. The Photic Stimulator is not in contact with the patient and the luminous energy produced is not capable of creating a health hazard to the patient. Note the Cautions at the beginning of this document. Refer to Figure 1 for the system setup. The Photic Stimulator is typically placed 30 cm in front of the patient’s eyes. The operator would normally stand in front of the patient in order to observe any physiological effects during the test. Other persons are excluded from the area.

Photic USB Connection Cable The PC connection cable connects from the Photic Stimulator RJ45 connector to a USB port on the host PC. The Photic must only be used with the USB cable provided with the unit.

Arm The arm allows the unit to be conveniently positioned in front of the patient.

Setup software The Trackit Plus software and stand-alone Photic setup software runs under Microsoft Windows XP, Windows Vista, Windows 7, 8 or 10 on the host PC and is used to setup and trigger the Photic Stimulator.

Host PC (not supplied by Lifelines) The host PC must be certified to IEC 60950-1 for safety reasons.

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System Overview

Optional Interface Cables The following, optional, interface cables can be used to interface the Photic Stimulator to 3rd party EEG equipment.

USB Splitter Cable

The allows the Photic to be used at full power by using 2 USB ports. Most USB ports can supply the full-power, intermittent current required by the unit and a USB splitter cable is not normally required. Refer Section 3.2 for details.

Ext. Trigger Input Cable (D-26HD connector)

This cable allows the Photic to be triggered from a TTL-type signal derived from an external piece of equipment. It is fitted with a D-26 High-density plug suitable for connection to the USBIFB. Power is supplied from an available USB port. Adapter cables are available to convert the D26 connector to a BNC for trigger input or MiniDIN for trigger output (see below). For details of this mode of operation, refer 3.2.

D-26HD BNC Adapter

This cable is used with the cable above to convert from the D-26HD trigger input to a standard BNC connector

D-26HD MiniDIN Adapter

This cable is used with the cable above to convert from the D-26HD trigger output to a MiniDIN connector.

Ext. Trigger Input Cable (Hirose HR212-10P-8P connector)

This cable allows the Photic to be supplied by 15V and triggered from the Viasys V32 system.

Ext. Trigger Input Cable + USB control (USB and BNC connectors)

This cable allows the Photic to be triggered from a TTL-type signal whilst being simultaneously powered and controlled from USB. This allows the intensity and duration for the external triggering to be controlled from the USB interface.

Trigger Output Cable

This allows the Photic to trigger an external amplifier or other piece of equipment. It provides a precise pulse output synchronised to the flash output and is connected to one of the Trackit's or R40's Auxiliary inputs located on the PCU. It is available with a 3.5mm jack plug or 2-pin touchproof. Note: Restrictions on signal output connections. The trigger output cable described above is fully isolated in the Photic to type BF standards so it can be connected to type BF amplifier inputs.

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USER MANUAL

Installation and Maintenance

2

Installation and Maintenance

The following section must be read and understood before the equipment is switched ON. Medical electrical equipment needs special precautions regarding EMC and needs to be installed and put into service according to the EMC information provided in the Appendix. The function or safety of the equipment could be impaired if it has been subjected to unfavourable conditions in storage or in transit. If at any time function or safety is thought to be impaired, the instrument should be taken out of operation and secured against unintended use. The manufacturer should be contacted (details on page ii) for assistance, if needed, in setting up, using or maintaining the equipment; or to report unexpected operation or events. The assembly of the system and any modifications during its service life require evaluation to the requirements of IEC 60601-1.

2.1

Checks for completeness and integrity

1 Remove the equipment from the packaging case(s). 2 Use the parts list to check that all ordered items have been received. 3 Assembly instructions for third-party products will be found in their packing cases. It is recommended that these instructions be filed with Photic Stimulator technical reference materials. 4 Check for signs of damage that may have occurred during transit or storage. If any damage is found, do not use the instrument; contact your distributor.

2.2

Environmental parameters for operation

The operational and storage/transportation environmental conditions are as follows: Operational

Storage and transport

Temperature

+10°C to +40°C (+50°F to +104°F)

Temperature

-10°C to +50°C (14°F to +122°F)

Relative humidity

25% to 95% non-condensing

Relative humidity

10% to 95% non-condensing

Atmospheric pressure

700 hPa to 1060 hPa

Atmospheric pressure

500 hPa to 1060 hPa

Do not obstruct any cooling slots. Position the instrument so that air flows freely.

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Installation and Maintenance

2.3

Power supply connections

Power requirements Power consumption

5V DC (USB) provided by host PC OR 12-15V (provided by 3rd party EEG system) Maximum peak power consumption 2.5W (single USB port), 5W (two USB ports) or 3.0W @ 12V (direct connection).

Leakage current This instrument is designed to comply with IEC 60601-1, the international standard for medical electronic equipment, which specifies the permissible levels of leakage current from individual products. A potential hazard exists in the summation of leakage currents caused by connecting several pieces of equipment together. Because this instrument can be used in conjunction with standard electronic devices, the total leakage current should be tested at regular intervals.

2.4

Use with other equipment

Host PC The host PC, which is not supplied by Lifelines, must be certified to IEC 60950-1 for safety reasons.

EEG amplifier The patient will be connected to an EEG amplifier during the EEG examination, and the Photic’s isolated trigger output can connect to an input channel of the amplifier to provide a marker pulse of the flash frequency.

Other patient-connected equipment The Photic Stimulator has no patient-applied parts and so when used simultaneously with other patient-connected equipment, for example a cardiac pacemaker or other electrical stimulator, it is unlikely that a safety hazard will arise. However always consult the documentation supplied with the other patient-connected equipment to ensure that all hazards, warnings and cautions are considered before the equipment is used together.

2.5

Interference

The Photic Stimulator will continue to operate in the presence of radio frequency magnetic fields (RF) and the effects of electrostatic discharges (ESD) and other interference, in accordance with the requirements of EN60601-1-2. Portable RF communications equipment (including peripherals such as antenna cables and external antennas) should be used no closer than 30 cm (12 inches) to any part of the Photic Stimulator, including cables specified by Lifelines Ltd. Otherwise, degradation of the performance of this equipment could result. When in close proximity to the Photic Stimulator, do not use mobile phones, transmitters, power transformers, motors, or other equipment that generates magnetic fields. Refer to the Appendix for more information. Medical electrical equipment needs special precautions regarding EMC and needs to be installed and put into service according to the EMC information provided in the Appendix.

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Installation and Maintenance

2.6

Maintenance and cleaning

The Photic Stimulator contains no user-serviceable parts. The system uses solid-state components and requires no routine testing or maintenance procedures apart from occasional cleaning and checking for wear and damage to all parts including the accessories. All the outer surfaces of the Photic Stimulator system may be cleaned using a soft cloth moistened with water and detergent. Each item may also be cleaned using a low-pressure air-line or a vacuum cleaner. Disinfection of the equipment can be carried out by the use of QAC-based disinfectants. Wipes are recommended in order to prevent the ingress of any liquid into the equipment. Suitable products include Mikrozid Sensitive Wipes (Schülke & Mayr GmbH), Microbac forte (Paul Hartmann AG), Distel Wipes (Tristel Ltd.), Mikro-Kill disinfectant wipes (Medline Industries, Inc.), Sani-Cloth HB Do not allow any liquid to enter the case of any instrument or connector. Do not use acetone on any of the instruments.

2.7

Disposal of equipment

When the device has reached the end of its operating life, it should be disposed of in accordance with local waste regulation authority that is typically within the local government office.

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Connections for Photic Stimulator Setup

3

Connections for Photic Stimulator setup

3.1

Overview

Below is an overview diagram showing the principal components when connected to a PC during system set up. To Trackit/R40 Aux. input

Trigger (isolated) output cable (optional) Photic Stimulator

Patient Isolation Zone

Mains Power Medical Grade Laptop Mains PSU

Laptop PC

To USB port (power & control)

PC (IEC 60950)

D26 adapter BNC trig. input

Patient

USB splitter cable (optional) USB power & control

Arm mounted on desk/bed clamp or suitable stand Photic USB cable Ext. trigger I/O D26 cable (optional)

D26 plug trig. I/O

MiniDin trig. output USB power & control

Ext. trigger input + USB cable (optional)

BNC trig. input

Ext. trigger input + power Hirose cable (optional)

Hirose power and trig. input

Figure 1: Connecting the Photic Stimulator

List of parts

List of optional parts

Photic Stimulator

Interface cables - various

Photic USB Cable

Trigger Input Cables - various

Photic User Manual

Trigger Output Cable - various

Photic Setup S/W Photic Arm

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Connections for Photic Stimulator Setup

3.2

Connecting the Photic Stimulator

The Photic Stimulator may be used in the following different modes: USB Interface This is the normal mode whereby power and control is over a USB connection. The general arrangement is shown in Figure 1 above. The Photic Stimulator USB Cable connects from the Photic’s RJ45 connector to the Host PC USB port. The Photic must only be used with the USB cable provided with the unit.

External Power + External Trigger Interface This is a ‘dumb’ operating mode where the unit is triggered by a TTL-like signal. This is most useful when the unit is being used to replace an older piece of equipment that uses a similar trigger arrangement. Cables are available offering BNC trigger input, D-26HD and Hirose - see table "Optional Interface Cables" on page 11. There are two operating modes available, depending on the voltage of the external power supply: y 12 – 15V is detected by the Photic and in this mode the pulse width of the incoming trigger signal determines the flash pulse width. In this way, it is possible to control the intensity. y 5V is detected by the Photic and in this mode the pulse width of the incoming trigger signal is ignored and the flash pulse width is fixed at 10ms. NOTE: In V3 and later of the Photic firmware it is possible to setup an internal flash memory parameter to control the default intensity and duration (not for the PWM case) for external trigger inputs. This parameter is setup once over the USB interface and is then used thereafter at every switch on. Refer to section 4 for details. NOTE: In V4 and later of the Photic firmware it is possible to setup an internal flash memory parameter to control the default intensity and duration, including the PWM 12V case, for external trigger inputs. This parameter is setup once over the USB interface and is then used thereafter at every switch on. Refer to section 4 for details.

USB + External Trigger combined This allows the unit to be powered and controlled over USB but also externally triggered from the BNC connector. This enables the intensity and duration to be controlled over USB for the external trigger input. When the USB control turns on its own flash repetition rate, this takes priority over the external trigger input. When turned off, the external source is enabled again.

External Trigger Output (isolated) This signal is provided on a 2-pin Type 249 touchproof connector on the Photic unit. It provides a synchronisation trigger pulse to the Trackit or R40 EEG Recorder or similar equipment to generate the Photic ‘tick’ marks in the recording. The Trigger Output cable connects from this socket to one of the Aux. Inputs on the Trackit or R40. The Trigger Output from the Photic is isolated and suitable for connection to type BF equipment. The signal is approximately 75mV in amplitude with a pulse width the same as the currently set flash duration. An alternative cable is available fitted with a 2-pin touchproof connector for use with an EEG amplifier without an 3.5mm Aux connector, such as the Trackit T4A.

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Connections for Photic Stimulator Setup

External Trigger Output (non-isolated) This signal is provided on a connector at the host-end of the Photic interface cable. It is a TTL type signal and is used to provide a synchronisation trigger output pulse to the PC.

3.3

Switching on

The Photic Stimulator has an on/off switch located on its rear panel. When off, the flash output is stopped immediately. The state of the switch is communicated back to the host PC if using a USB connection.

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Photic Stimulator Setup Software

4

Photic Stimulator Setup Software

Photic setup and control software is supported on Microsoft Windows XP, Vista Windows 7, Windows 8 & 8.1 and Windows 10. The Photic Stimulator is connected to the host PC USB port. Over the USB connection, the software allows the user to define parameters such as flash repetition rate, intensity and duration as well as run simple, sweep or complex trains of stimulation. NOTE: The screenshots shown in the following sections are for illustrative purposes only and may not be exact representations of the actual product.

4.1

Installation

The USB drivers will be found on the installation CD. Upon first connection of the Photic to the PC USB port, at the Windows prompt, browse to the folder CD Drive:USB Drivers. From there, Windows will find the correct drivers for the version of Windows being used. To install the main program, follow the instructions in the Readme file on the CD.

4.2

Overview

When the program is launched, 3 types of flash stimulation are provide: Manual, Sweep or Complex. Select the option as required and the control panel to the left will change appropriately.

Figure 3: Photic not connected (Manual Stimulation)

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