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Oxford Medelec Synergy Mobile Workshop Manual

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Synergy Mobile
Medelec
®
Multimedia EMG / EP
Workshop Manual
034W003 Issue A
OXFR
Issue A May 1998

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  • Page 1 Synergy Mobile Medelec ® Multimedia EMG / EP Workshop Manual 034W003 Issue A OXFR Issue A May 1998...
  • Page 2 EMG LivePlay™ and LongTrace™ are trademarks of Oxford Instruments, Medical Systems Division. Screen Captures Various screen captures (portions of the display) are shown throughout this Workshop Manual. These are either copyright of the Microsoft Corporation or Oxford Instruments Medical Systems Division. ISSUE A May 1998...
  • Page 3 Customer support is also available from your local Oxford Subsidiaries at the following Addresses: Or your local Oxford distributor. FRANCE ITALY Oxford Instruments SA Oxford Instruments Spa Medical Systems Division Medical Systems Division Parc Club – Orsay Université Via Leone Tolstoi 86...

  • Page 4: Table Of Contents

    Synergy Mobile Workshop Manual Table of Contents INTRODUCTION ........1 TECHNICAL SPECIFICATION .
  • Page 5 Synergy Mobile Workshop Manual PATIENT SAFETY CHECKS ........5 Equipment Required ·...
  • Page 6 Synergy Mobile Workshop Manual Removing The Isolation Transformer and Power Supply · · · · · · · · · · · · · · · · · 9.5 CUSTOMER OPTIONS AND SPARES ......10 Hardware, Software, Spares and Options ·...

  • Page 7: Introduction

    Synergy Mobile Workshop Manual Chapter 1 Page 1 INTRODUCTION INTRODUCTION The Synergy Mobile EMG system is mounted on The Synergy Mobile EMG system is mounted on a trolley and is based around a Pentium PC tower, a trolley and is based around a Pentium PC tower, running under Windows 95.
  • Page 8 Chapter 1 Page 2 Synergy Mobile Workshop Manual the operating system has loaded, move the mouse pointer to the “task bar”. This is normally hidden but will appear when the mouse is moved to the very edge of the screen (the default setting is the bottom edge).

  • Page 9: Technical Specification

    Synergy Mobile Workshop Manual Chapter 2 Page 1 TECHNICAL SPECIFICATION 2.1 Amplifiers Differential offset range : >±2V 2.1.1 Input Channels Common mode There are two, five and ten channel variants of the offset range : >±5V headbox. 2.1.5 Impedance Test 2.1.2 Headbox Connections Two Channel Two Channel...

  • Page 10: A To D Conversion

    Chapter 2 Page 2 Synergy Mobile Workshop Manual 2.1.9 Temperature Probe Voltage Output : High Range - 0 to 300V Low Range - 0 to 75V Temperature Range 15°C to 40°C with 0.1°C resolution, 0.2°C accuracy for use with YSI series Current Output : High Range - 0 to 100mA 400 or 4400 probes with resistance of 2253Ω...

  • Page 11: Visual Stimulator

    A microphone input is available to talk to the Loughborough Sound Images (LSI) PCI/C44-nM patient through the headphones in auditory tests. DSP designed specifically for Oxford Instruments. (Where n = the number of DSP’s fitted to the board) Card type : Standard length PCI 2.6 Visual Stimulator...

  • Page 12: Isolation Transformer / Power Supply

    Chapter 2 Page 4 Synergy Mobile Workshop Manual 2.12 Isolation transformer / Power Overall width : 720mm (28.8") Supply Overall height : 780mm (31.2") Overall depth : 640mm (25.6") Operates from mains inputs of 100V – 120V at 50-60Hz, or 200V – 240V at 50-60Hz. 1250VA Weight The unit has a switch to change the operating System...

  • Page 13: Installation And Operation

    SMT circuits be rectified by board replacement. To assist with this, fully tested replacement boards Ordinary equipment (enclosed equipment without are be available from Oxford Instruments and protection against ingress of water) principal distributors. Equipment not suitable for use in presence of a...
  • Page 14 Note: It is important that all applied parts colour monitor for visual EP stimulation. If are removed from the patient before equipment not supplied by Oxford Instruments is operating the power switch or disconnecting to be connected to the isolating transformer outlets any of the system’s connection cables.
  • Page 15 Synergy Mobile Workshop Manual Chapter 3 Page 3 Synergy Mobile System Configuration and connections Stim electrode Connections SIGNAL Control Panel 034C001 PC Tower Monitor with Multimedia speakers Serial port Printer EP Microphone EP Stim Sound External stim input PS1285 L/R line output port VGA &...
  • Page 16 Chapter 3 Page 4 Synergy Mobile Workshop Manual Example A MEDICALLY USED ROOM Monitor Synergy Synergy mains cable including protective earth Isolated mains outlets PC tower Printer Wall outlet sockets Isolating transformer Mains inlet Signal Other equipment mains cable cable including protective Other electrical earth equipment...
  • Page 17 Synergy Mobile Workshop Manual Chapter 3 Page 5 Example B MEDICALLY USED ROOM OTHER ROOM Monitor Additional protective earth conductor connected between the metalwork of the Synergy Synergy mains isolating transformer module and the earth pin of a separate wall socket in the medically used room Isolated mains outlets...

  • Page 18: Disclaimer

    200V-240V. The X switch sets the output 3.2 Disclaimer voltage of the six isolated mains outlets Oxford Instruments considers itself responsible for 100V-120V or 200V-240V. Both switches must be the effects on safety, reliability and performance of set to the same voltage. The switches can be the equipment only if :–...

  • Page 19: Routine Maintenance

    The Foot switch has a 9 Way D type plug which ¨ connects to a socket marked 9 on the connection The appointed Oxford Instruments subsidiary unit. or distributor in your country. See contact information at the front of this 3.4.10 Printer...

  • Page 20: Controls

    Chapter 3 Page 8 Synergy Mobile Workshop Manual 3.6 Controls Pressing this button erases the selected trace(s) but may To simplify operation, the number of controls has depend on the system mode. been minimised. Results associated with the The functions of these controls is listed below. trace(s) will also be erased.
  • Page 21 Synergy Mobile Workshop Manual Chapter 3 Page 9 Figure 3-1 Connections to Rear Panel of PC Tower INSTALLATION AND OPERATION Issue A May 1998...

  • Page 22: Pc Tower Rear Connector Panel

    3 and pin-out tables. The tables are listed according to signal origin in the unit. Data 0 See section 3.1.5 if connecting other equipment Data 1 not supplied by Oxford Instruments. Data 2 3.7.1 From the PC Motherboard Data 3 Data 4...
  • Page 23 Synergy Mobile Workshop Manual Chapter 3 Page 11 3.7.2 From Optional Graphics Board( This information relates to the Matrox Millennium Graphics card) Standard Video Output 15 way D-sub+half socket Pin No. Service Red video Green video Figure 3-2 Pin-out of mouse and keyboard connectors Blue video PC PS/2 Keyboard Port...
  • Page 24 Chapter 3 Page 12 Synergy Mobile Workshop Manual 3.7.3 From DSP Daughter Board at Rear of 3.7.4 Connections From Connection Box PC Tower Footswitch &I Headbox Connector 9 way D type socket 26 pin High Density Pin No. Service (see ) Pin No.
  • Page 25 Synergy Mobile Workshop Manual Chapter 3 Page 13 AUX EXT. EMG Stim 2 (B) EP Auxiliary I/O Connector STIM 9 way D type socket 8-way DIN socket Pin No. Service Pin No. Service +12V Right LED driver RS232 to STIM 2 Supply input for logic levels†...
  • Page 26 Chapter 3 Page 14 Synergy Mobile Workshop Manual 3.7.7 From Control Panel Video Stimulator 15 way D sub+half socket EMG Int Stim Pin No. Service 2 x Touchproof Red video signal output Sockets Green video signal output Stim + Blue video signal output Black Stim - 4 –...

  • Page 27: Peripheral Connectors

    Synergy Mobile Workshop Manual Chapter 3 Page 15 3.8 Peripheral Connectors Remote Jackbox Connector 25 pin D-type Socket The following tables show pin-outs of connectors on peripheral devices e.g. headbox. Pin No. Service 24k pull-up to +5V for Headbox Connector temperature probe input 26 pin High Density (see )
  • Page 28 Chapter 3 Page 16 Synergy Mobile Workshop Manual EMG Stimulus Probe 9 way D type plug Pin No. Service +12V RS232 to Stim RS232 from Stim EMG_POS EMG_NEG Stim_OK HB_Frame Issue A May 1998 INSTALLATION AND OPERATION...

  • Page 29: Technical Overview

    Synergy Mobile Workshop Manual Chapter 4 Page 1 TECHNICAL OVERVIEW The Synergy Mobile is a multi-tasking PC based have more. is a block schematic of the DSP system controlled by a Pentium processor in a sub-system. tower enclosure. An overall schematic diagram of The DSP card provides the following functions: the system is shown in Figure 4.1.
  • Page 30 Chapter 4 Page 2 Synergy Mobile Workshop Manual Figure 4-1 Guide to Internal and External Connections Issue A May 1998 TECHNICAL OVERVIEW...
  • Page 31 Synergy Mobile Workshop Manual Chapter 4 Page 3 Figure 4-2 Overall schematic of the DSP Card and daughter board. (Max of 3 DSP chips fitted.) TECHNICAL OVERVIEW Issue A May 1998...

  • Page 32: The Control Panel & Electrical Stimulators

    Chapter 4 Page 4 Synergy Mobile Workshop Manual 4.3 The Control Panel & Electrical three signals to TTL levels and transfers them to Stimulators. the first (XC5210) of two large field programmable gate arrays (FPGAs) on the A schematic diagram for this unit is shown in daughter board.
  • Page 33 Synergy Mobile Workshop Manual Chapter 4 Page 5 CONTROL PANEL SECTION BOARD +12V POWER TO DSP CONNECTOR LINE VIA CONNECTION UNIT DRIVER/RECEIVER FROM FOOTSWITCHES MICROCONTROLLER VIA CONNECTION UNIT FRONT PANEL SWITCH INTERFACE VOLUME INTERFACE CONTROL ROTARY ENCODERS INTERFACE EMG STIMULATOR SECTION +12V OSCILLATOR ISOLATING...

  • Page 34: The Evoked Potential Stimulators

    Chapter 4 Page 6 Synergy Mobile Workshop Manual relevant current or voltage controlled level to the The selected sinewave and/or noise signals are patient output sockets. then fed to dual digital attenuators (LOGDACs). The noise signal has a switched resistive -34dB The delivered stimulus is monitored by the PIC, attenuator in the line before the LOGDACs.
  • Page 35 ISA CONNECTOR Plug-n-Play INTERFACE DECODE PAL BUFFERS H16 INTERFACE LCA ANALOGUE SWITCHES ANALOGUE SWITCHES ANALOGUE SWITCHES ANALOGUE SWITCHES DUAL DIGITAL DUAL DIGITAL ATTENUATOR ATTENUATOR (LOGDAC) (LOGDAC) SIGNAL SIGNAL SUMMATION SUMMATION SHIFT REGISTER TO HEADPHONES TO EOG TO LED RELAYS STIMULATORS...

  • Page 36: The Two Channel Headbox

    Chapter 4 Page 8 Synergy Mobile Workshop Manual Cables carry these supplies to the stimulator Pre-amplifier inputs through switched attenuators boards, the riser card is not used to carry these controlled by signals from the mainframe via the voltages. PIC. Connection are also made for the other signals that In Impedance Check mode, the oscillator signal is are required by the Connection Unit and Control...
  • Page 37 Synergy Mobile Workshop Manual Chapter 4 Page 9 TECHNICAL OVERVIEW Issue A May 1998...
  • Page 38 Chapter 4 Page 10 Synergy Mobile Workshop Manual modules to set up the amplifier, the high-pass 4.6.2 The Electrode Board filter and to switch in the d.c. offset as required. There are 18 (+2 Neutral) EP electrode inputs and The analogue patient signals from the electrode 2 (+ Neutral) EMG Channel inputs for the headbox board are low-pass filtered on this board and then that are input via this board.
  • Page 39 Synergy Mobile Workshop Manual Chapter 4 Page 11 The Cal signal from the Control Board is used the headbox to indicate the impedance level for both for input impedance testing and for the Amp each channel. Cal signal. In Amp Cal mode, the signal is attenuated by a In Impedance Check mode the full amplitude chain of resistors and the reduced amplitude signal signal passed through a 1MΩ...

  • Page 40: The 10 Channel Headbox

    Chapter 4 Page 12 Synergy Mobile Workshop Manual also a connector for attaching an input from a Control of the d.c. switching, high pass filter, and remote headbox). the gain stage are controlled by signals derived from a shift register. A serial data stream is Various rotary and push-button controls on the clocked into the shift register of the first amplifier headbox are located on the Electrode Board and...
  • Page 41 Synergy Mobile Workshop Manual Chapter 4 Page 13 4.7.1 Isolation Tranformer and Power Supply Terminal block TB2 provides isolated mains voltage to the three power supply modules. The The Isolation Tranformer and Power Supply are table below gives the voltages and maximum mounted at the base of the trolley.

  • Page 42: Patient Safety Checks

    Synergy Mobile Workshop Manual Chapter 5 Page 1 PATIENT SAFETY CHECKS In order to perform the following checks, a basic launched automatically at start-up, initially knowledge of Windows 95 is required to verify the showing the Synergy Mobile logo and then system settings.

  • Page 43: Earth Leakage Current Tests

    Chapter 5 Page 2 Synergy Mobile Workshop Manual Store trace area Monitor trace area Figure 5-2 A typical “single channel” acquisition screen From the “Stimulus” drop down Press the “stimulus” button on the control panel menu select “Electrical Stim Setup” (see Figure and check that the adjacent LED illuminates.

  • Page 44: Patient Leakage Current Tests

    Synergy Mobile Workshop Manual Chapter 5 Page 3 5.5.1 Normal Condition ¨ Where instructed to “switch the unit off” or to operate the “Normal/Reverse” switch, shut Connect the a.c. current meter in series with the down Windows 95 in the correct sequence protective earth lead of the unit.

  • Page 45: Patient Auxiliary Current (Headbox)

    Chapter 5 Page 4 Synergy Mobile Workshop Manual 5.6.2 Single Fault Condition – Earth Open mains supply using switch S2. Repeat 5.7.1, (but this time with the unit not powered up) checking Open the connection between the unit Protective that the currents do not exceed 500µA a.c. and Earth and the Mains Protective Earth.

  • Page 46: Emg Safety Checks

    Synergy Mobile Workshop Manual Chapter 5 Page 5 mains supply using switch S2. Check that the 5.10.4 Mark/Space Failure current does not exceed 500µA a.c. and 50µA d.c. Connect the 3k0 stimulus load across the stimulus Switch off the unit and remove all connections output sockets and monitor across it with the between the unit and the special test equipment.

  • Page 47: System Functional Checks

    Synergy Mobile Workshop Manual Chapter 6 Page 1 SYSTEM FUNCTIONAL CHECKS In order to perform the following tests, a basic “Taskbar” will appear with any minimized knowledge of Windows 95 is required to verify the applications displayed on it. (The factory default system settings.

  • Page 48: Cd-Rom Drive Checks

    Chapter 6 Page 2 Synergy Mobile Workshop Manual 6.3.3 Regional Settings Check Select the Acquisition drop-down menu and then select Setup. Use the mouse to select each From the Control Panel select Regional Settings. channels parameters page tab. Set Amp Gain to Select each “tab”...

  • Page 49: Trigger / Gain / Sweep Control Checks

    Synergy Mobile Workshop Manual Chapter 6 Page 3 Check that the green LED next to the Acquire button, briefly flashes and that the active store 6.7 Trigger / Gain / Sweep Control trace is updated once. Checks Press the Next button on the Front Panel and From the Test Menu select Needle EMG.

  • Page 50: Temperature Probe Checks

    Chapter 6 Page 4 Synergy Mobile Workshop Manual 6.10 Temperature Probe Checks Check on the CRO for a 300V stimulus pulse (100mA x 3k0) of 500µs duration every 33ms Plug the temperature probe into the socket on the headbox. From the Test Menu, select the Default Rotate the stimulus level control over its full 2 menu and then Motor NCS.

  • Page 51: External Speaker Checks

    Synergy Mobile Workshop Manual Chapter 6 Page 5 Rotate the stimulus level control over its full and also link to the EMG2+ and EMG2– input travel, and check that the amplitude of the stimulus sockets. pulse can be varied continuously and smoothly Adjust the Headbox gain to give a 2 div sinewave between 0 and 300V.

  • Page 52: Parallel & Serial Port Checks

    Chapter 6 Page 6 Synergy Mobile Workshop Manual 6.15 Parallel & Serial Port Checks Remove the ‘loopback’ connector, and type on the keyboard. 6.15.1 Parallel Port Check that the characters typed no longer appear in To perform these checks, the Windows 95 printer the Hyper Terminal window.

  • Page 53: Ep Stim Checks

    Synergy Mobile Workshop Manual Chapter 6 Page 7 If using two Synergy Mobile systems, ensure that Click on the Other Side button and press the at least one directory is shared. To share a Control Panel Stim. button. directory proceed as follows. Check that a 1kHz tone can be heard from the Start Windows Explorer, right click on a right earphone and white noise in the left...

  • Page 54: Firmware History

    Synergy Mobile Workshop Manual Chapter 7 Page 1 FIRMWARE HISTORY 7.1 Introduction Waveform Generator 003P042 This chapter lists the programmed hardware devices used in the Synergy Mobile . The lists Housed in one FPGA type TPC1020B in position includes all supported versions of the firmware up M4 on EP Stimulator Board 031E010.
  • Page 55 Chapter 7 Page 2 Synergy Mobile Workshop Manual Console Stimulator Microcontroller 034P002 Housed in one PIC type 16C74-20/L in position M5 on control panel board. Version A.00. First supported issue. Checksum : Issue A May 1998 FIRMWARE HISTORY...

  • Page 56: Fault Finding

    Synergy Mobile Workshop Manual Chapter 8 Page 1 FAULT FINDING This chapter may be used by the Service Engineer as a basis for fault finding in the Synergy Mobile down to board/sub-assembly level. The “Fault Finding Table” is split into two columns. The left hand column shows the symptoms, and the right hand column indicates the area to look at first.
  • Page 57 Chapter 8 Page 2 Synergy Mobile Workshop Manual Fault Symptom Possible Fault(s) – Windows 95 does not recognise DSP assembly – Applications software corrupted – Control panel has become disconnected Control Panel inoperative – Poor connections via connections box – Control panel is faulty –...
  • Page 58 Synergy Mobile Workshop Manual Chapter 8 Page 3 Fault Symptom Possible Fault(s) – Applications software corrupted (try printing Windows 95 printer test page) – PC motherboard BIOS parameters corrupted Unable to print – Printer faulty – Printer data lead faulty or disconnected –...

  • Page 59: Servicing

    Synergy Mobile Workshop Manual Chapter 9 Page 1 SERVICING This chapter describes the recommended method Re-fitting the cover of the unit is the reverse for dismantling the Synergy Mobile in order to process to the above.Take care not to trap or upgrade the unit, or to replace sub-assemblies in damage any cables as the cover is re-fitted.

  • Page 60: Removing The Disk Drives

    Chapter 9 Page 2 Synergy Mobile Workshop Manual Refitting of the motherboard is the reverse process ¨ The optional Network board. This is located in to the above. When refitting it, ensure that the the second white PCI slot from the board locates correctly in the plastic runner and motherboard.

  • Page 61: Upgrading Components On The Motherboard

    Synergy Mobile Workshop Manual Chapter 9 Page 3 through the rear of the tower after first removing Refitting of the floppy disk drive is the reverse the cover plate. process to the above. When reattaching the ribbon cable, do not use the connector at the end of the Unscrew the single screw securing the plate in cable as this is for a second floppy disk drive, position, and then manoeuvre the plate away from...
  • Page 62 Chapter 9 Page 4 Synergy Mobile Workshop Manual Processor SW 3 SW 4 SW 5 SW 6 SW 2 Speed 200MHz OPEN CLOSED OPEN CLOSED CLOSED OPEN 233MHz OPEN CLOSED OPEN OPEN CLOSED CLOSED Table 9-1 Table of processor and bus speeds SWITCH SWITCH FUNCTION 1-4,7-8...

  • Page 63: Removing The Pc Speaker

    Synergy Mobile Workshop Manual Chapter 9 Page 5 Once the system has been put back together, verify Once the shelf is removed the top of the PSU can that the system recognises the new configuration be seen, it is fixed onto a support tray with four by using the pointing device to select the “Start”...
  • Page 64 Chapter 9 Page 6 Synergy Mobile Workshop Manual Figure 9.2 Main Components of the Power Supply Assembly Issue A May 1998 SERVICING...
  • Page 65 Synergy Mobile Workshop Manual Chapter 9 Page 7 9.5.1 The Connection unit There is a mounting plate which enables the connection unit to be fitted on inside support of either side of the trolley. The cover of the box is held in place with four screws and the mounting plate is attached with three screws.

  • Page 66: Customer Options And Spares

    All lists Cable DD Bay to Con Box EP H-phones 034D007 contain the Oxford Instruments part numbers for these items that can be ordered from Oxford Cable DD Bay to DC PSU 12W....034D006 Instruments or your local distributor.

  • Page 67: Recommended Spares

    Microsoft Office Professional (Spanish) ..CP138 Microsoft Office Professional (French) ..CP140 10.2 Recommended Spares The following items of hardware are Service Spares recommended by Oxford Instruments (including some items already shown above). Headbox Cable ...........031D024 Knob 30 x 15..........031Y037 Knob 17 x 12..........031Y038 Knob 12 x 12..........031Y039...
  • Page 68 Synergy Mobile Workshop Manual Index Index Fault Finding ... . Chp 8-Pg 1 Amplifier Specification..Chp 2-Pg 1 Graphics card option ..Chp 2-Pg 3 Calibration Signal.
  • Page 69 Index Synergy Mobile Workshop Manual Routine maintenance ..Chp 3-Pg 7 Routine Maintenance ....Cleaning ... . Chp 3-Pg 7 Safety Checks .

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