EIM-107 Prep-Check Plus User`s Manual
Contents
1. 4 400 4 1 250 QOYA me Pr 1 Figure 9 1 DIMENSIONS AND PHYSICAL CHARACTERISTICS NOTE ACTUAL APPEARANCE MAY VARY DEPENDING UPON MODEL NUMBER AND CONNECTOR TYPE fe Ses ze 2 4 5 2 AA BATTERIES PLUG INTO PROGRAMMING JACK IN Figure 9 2 CONNECTING PREP CHECK PLUS PC SERIAL PORT 15 GY General Devices Prep Check Interface Program F 1 1 2 E a Figure 9 3 7 5 PROGRAMMING SCREEN 16 GY General Devices 10 ADDENDUM 10 1 Model EIM 107 68C Models EIM 107 68C is intended to be used only with Grass Telefactor AS40 Amplifier System Personality Modules electrode boards NOTES 1 The aboveme ntioned modules have a built in 1K Ohm impedance on all leads EXCEPT ISO GND The EIM 107 68C automatically compensates for this additional impedance by subtracting 1K Ohms from all readings 2 Impedance reading made from ISO GND will read an ADDITIONAL 500 Ohms the default test frequenc2. 7 1 3 TEST CURRENT AND TEST CURRENT FREQUENCY Testing electrodes requires the use of a TEST CURRENT The PLUS employs a sinusoidal ALTERNATING CURRENT AC as opposed to DIRECT CURRENT DC which may create DC OFFSET VOLTAGES The TEST CURRENT FREQUENCY refers to the number of cycles per seconds expressed as HERTZ Hz 20 and 30 Hz are the generally accepted frequencies for EEG with 10 Hz generally accepted for ECG Readings vary slightly with different test frequencies For most applications the difference will not interfere with the intended task of the instrument 7 1 4 DC OFFSET VOLTAGE The DC OFFSET VOLTAGE of an electrode is a polarizing voltage produced by the electrode and the electrolyte gel or paste Offset voltages are at the milli volt mV level and may interfere with measurements or produce artifact Electrodes must be handled in accordance with the electrode s manufacturer instructions to avoid offset voltage refer to the instructions for the electrodes being used regarding care and handling 7 1 5 INTERMITTENT PROBLEMS Lead wires tend to fail over time When they simply open i e the conductor breaks the wire will not conduct the signal and its resistance impedance will be very high infinite At times lead wires become intermittent that is they do not open permanently Intermittents tend to and go usually as the wires are moved producing an unstable o
3. flame retardant ABS plastic enclosure The instrument is powered by long lasting common AA GY General Devices batteries Battery life is enhanced by an Auto Off feature which eliminates the possibility of accidentally leaving the instrument on when not in use See figure 9 1 for dimensions and other physical characteristics 2 2 APPLICATIONS 2 2 1 The PLUS tests all types of surface type biopotential electrodes used for sleep studies and EEG Testing all electrodes for impedance insures minimal motion and 60 Hz artifact and disruption to the study Although some instruments possess internal impedance measurement capabilities oftentimes the readout displays are located in the monitoring areas distant from the patient s bedside The use of a hand held stand alone impedance meter permits fast accurate bedside assessment of electrode performance in a convenient economical way Specifically designed for this application the unit even has a softly lit display permitting operation in a dimly lit room 2 3 PRODUCT FEATURES The PREP CHECK PLUS possesses many important and unique features designed to save time and simplify electrode testing These include e Fast accurate impedance and offset voltage readings e Quick identification of faulty lead wires e Large illuminated alpha numeric display flashing color coded LEDS and audible cues specifically designed for extreme ease of use and rapid electrode asses
4. 5 GOOD POOR LIGHTS The GOOD POOR lights are used to indicate the pass fail impedance measurement status The lights also respond to intermittent lead and electrode conditions e The red or yellow POOR light flashes when the impedance value is equal to or exceeds the poor limit setting The POOR light will also respond to intermittent lead breaks that may not appear on the numerical impedance readout e The green GOOD light flashes when the impedance value is equal to or less than the good limit setting 4 1 6 AUDIBLE TONE The audible tone is used to alert the user as follows e 3 short beeps A FAIL in Automatic or Manual which is NOT intermittent e 3 long beeps An intermittent FAIL in Automatic or Manual e long beep The end of an AUTOMATIC test sequence WITH NO failed leads e 5 short beeps The end of an AUTOMATIC test sequence WITH failed leads e long beep The end of a PASSED self test auto cal e 5 short beeps The end of a FAILED self test auto cal GY General Devices 4 2 DETAILED OPERATING INSTRUCTIONS This section provides more detailed operating instructions Connections to equipment complete descriptions of controls indicators and terminology are provided in other parts of this manual START UP OPERATIONS Whenever the unit powers up goes from OFF to ON it automatically performs a battery check a self test of its circuits as well as a complete re calibration Upon passing these tests the display reads BATT
5. screen or 2 READ FROM an existing file stored within the computer Selecting the WRITE TO box stores screen information to a file named in a SAVE AS pop up dialog box which automatically appears The file name is saved with a prp suffix That file may be stored anywhere within the computer To aide retrieval it is recommended that the files be stored in a folder named PREP CHECK Selecting the READ FROM box presents information stored in a file selected from an OPEN pop up dialog box that appears automatically These files represent previously saved instrument settings 5 3 3 10 QUIT The QUIT box is selected to exit the EZ Set program and return to other PC operations Information that is present on the screen will be lost unless previously saved to a file 6 TROUBLESHOOTING GUIDE FOR ELECTRODE PROBLEMS At times it is difficult to identify the source of a high impedance reading or electrode problem as the problem may be related to the prep the lead wires connectors cables and adapters the electrodes or the meter Each of these elements has to be addressed separately To identify the source of a problem perform the following steps in the order indicated 10 GY General Devices 6 1 METER VERIFICATION The meter is tested and calibrated each time it is turned on If the meter does not turn on at all try replacing the batteries To verify that is OK while in use allow the instrument to turn itse
6. N keys Pressing the START key at any time returns the unit to the start of the test sequence the first non skipped lead 4 2 6 PROGRAMMING MODE Without the EZ Set option skipped leads may be marked as described in Section 5 1 2 With the EZ Set option a wide variety of customized features may be set as described in Section 5 2 4 2 7 AUTO OFF After a period of time AFTER the last front panel control operation OR after the conclusion of a test sequence the unit will automatically turn itself off This time period may be set as described in Sect 5 3 3 3 5 SETTING USER SELECTABLE FEATURES The PREP CHECK PLUS is a microprocessor controlled device with many programmable features As shown in the following table some of these features are factory set some front panel user defined and most user defined with the EZ Set PC Software LISTING OF PROGRAMMABLE FEATURES Feature Default Setting Front Panel EZ Set Skip Lead Failure Criterion Greater Than Poor No Yes Failure Response Complete No Yes Normal Start Up Mode Last Used No Yes GOOD POOR Limits 10 K 1S No Yes Auto Off Timeout Setting 2 minutes No Yes Test Current Frequency 30 Hz No Yes Lead Identification Name None No Yes 5 1 FRONT PANEL USER SETTINGS 5 1 1 SETTING MANUAL AUTOMATIC TEST MODES e Press the START key to turn instrument on e After the
7. OK CAL OK and is accompanied by one long beep sound Should it fail any of these checks refer to Section 7 Service and Maintenance for instructions After the start up checks the unit assumes the NORMAL operating mode manual automatic or last used mode as determined by user selected setting See Section 5 4 2 1 OPERATING MODES Pressing the MODE key permits selecting an operating mode other than the present operating mode OR putting the unit into the PROGRAMMING mode To better understand the unit s operation Section 5 Setting User Selectable Features should be reviewed for a list of the operating features that are factory or front panel user selectable and features available using the EZ Set PC Software Option 4 2 2 MANUAL MODE IMPEDANCE MEASUREMENTS In the MANUAL MODE leads are selected using the UP amp DOWN keys The unit will skip leads that have been identified marked as unused Pass Fail indication is determined in accordance with the Fail Criterion See Section 5 2 3 5 and is indicated on the LCD the GOOD POOR lamps and by audible sounds Impedance readings are continuous for as long as the lead is selected This mode is useful for troubleshooting or for testing lead wires Pressing the START key re starts the test sequence 4 2 3 AUTOMATIC MODE IMPEDANCE MEASUREMENTS In AUTOMATIC MODE all non skipped leads are automatically sequentially selected The unit s response to electrodes meeting the fa
8. R Indicators Green amp Red or yellow 0 2 LEDs 7 2 17 Impedance Good Limit User Programmable 1 to 100K 7 2 18 Impedance Poor Limit User Programmable 1 to 100K 7 2 19 Offset Voltage Measurement Range 10 to 10 mVolt 7 2 20 Offset Voltage Accuracy 5 of Reading 0 5 mVolt 7 2 21 External Computer Interface Serial RS232 7 2 22 Power Source 2 AA Alkaline Batteries 7 2 23 Battery Life 250 uses Approximately 7 2 24 Battery Test low batt indicated on LCD 7 2 25 Regulatory Compliance FDA 510 k Class 7 2 26 Cabinet Fire retardant ABS plastic 7 2 27 External Dimensions 6 6 x 3 4 x 1 3 7 2 28 Weight 11 5 oz without batteries 7 3 SELF TEST CAL FAILURE Should the meter fail the automatic self test calibration the display reads SELF TEST CAL FAIL SERVICE NEEDED accompanied by 5 short beep sounds The unit will then shut itself off after 30 seconds regardless of the pre set auto off timeout period Restart the unit wait for Auto Off time out and re start to double check the failure If the BATT LO message accompanies the SELF TEST CAL FAIL SERVICE NEEDED replace the batteries and restart the unit Upon verifying the failure the unit must be ret
9. USER S MANUAL FOR THE GENERAL DEVICES MULTI LEAD MODEL 107 PREP CHECK Pius ELECTRODE IMPEDANCE METER FOR POLYSOMNOGRAPHY amp EEG Doc 1078002x CONTROLLED Revision GY General Devices TABLE OF CONTENTS 1 GENERAL INFORMATION 1 1 1 OVERVIEW OF USER S MANUAL 1 2 CAUTIONARY NOTICES 2 PRODUCT INTRODUCTION KEO 1 2 1 PRODUCT DESCRIPTION 2 2 APPLICATIONS 2 3 PRODUCT FEATURES 2 4 OPTIONS AND ACCESSORIES 3 CONNECTION TO EQUIPMENT OO 3 A OPERATION 4 41 A QUICK GUIDE TO OPERATION 4 2 DESCRIPTION OF CONTROLS AND INDICATORS 4 3 DETAILED OPERATING INSTRUCTIONS 5 SETTING USER SELECTABLE FEATURES 6 5 1 OVERVIEW 5 2 FRONT PANEL USER SETTINGS 5 3 EZ SET PC SOFTWARE USER SETTINGS 6 TROUBLESHOOTING GUIDE FOR ELECTRODE PROBLEMS 9 7 TECHNICAL INFORMATION SERVICE AND MAINTENANCE 10 7 1 GLOSSARY OF TERMS 7 2 PRODUCT SPECIFICATIONS 7 3 SELF TEST CAL FAILURE 7 4 BATTERY REPLACEMENT 7 5 MAINTENANCE amp PERIODIC CALIBRATION 7 6 CLEANING 7 7 SERVICING 8 PRODUCT WARRANTEE AND 2 12 8 1 WARRANTY TERMS AND CONDITIONS 8 2 NON WARRANTY SERVICE 8 3 FACTORY TECH SUPPORT HOURS 8 4 RETURNING GOODS TO FACTORY 9 FIGURES AND DRAWINGS siscsscsscsessscsecessscasscssaundssusssnsseazececsecsosnsssese
10. ce Failed leads are presented at the conclusion of the test sequence when they then can be examined and corrected 5 3 3 6 DEVICE INFORMATION Firmware Rev Displays the revision number for each particular unit This number may be useful for troubleshooting purposes e Unit s Serial Number Displays the unit s serial number GY General Devices Connection Setup Used to select the PC s Com Port 1 Com 1 Com 2 etc 5 3 3 7 START UP MODE The START UP Mode setting permits the unit to return to the PRESET operating mode upon start up OR to the LAST USED setting For example if the unit is normally used in the Automatic mode and it is only occasionally used in the Manual mode or for DC Offset testing it may be desirable for it to always start in Automatic with the other uses selected as needed Selecting Auto Manual DC Offset or Last Used determines the mode the unit will next start up in 5 3 3 8 PREP CHECK This box relates to actions involving the instrument WRITING the user selections TO the instrument OR READING existing settings FROM the instrument Selecting the WRITE TO box passes screen information to the instrument Selecting the READ FROM box passes information stored within the instrument connected to the PC to the PC s screen 5 3 3 9 FILE This box relates to actions involving the computer files containing the user selected operating characteristics Files may be either 1 WRITTEN TO from the display
11. em sources have been ruled out the most likely source of the problem is the prep procedure or the materials used This should be discussed with your supplier of prepping agents or electrodes Our web site at www prepcheck com provides a list of some suppliers of these agents 7 TECHNICAL INFORMATION SERVICE AND MAINTENANCE 7 1 GLOSSARY OF TERMS 7 1 1 IMPEDANCE amp KOHMS The unit of measurement that describes the quality of the electrical connection of a bio potential electrode to a patient is IMPEDANCE which is expressed in OHMS Impedance is the degree of opposition to the flow of electricity It differs from RESISTANCE in that impedance is used for AC measurements whereas resistance is used for DC measurements The higher the impedance the poorer the connection Most biopotential electrode impedances are normally in the 2 to 15 thousand ohm range and are thus expressed in thousands of ohms or Kilo Ohms KOhms 7 1 2 SKIPPED ELECTRODE The PLus has the ability to skip over user specified electrodes in both manual and automatic testing modes For example if the lead connected to the CHIN2 jack were not 11 GY General Devices used the instrument would be instructed not to test that lead This feature saves time and simplifies the testing procedure since unused electrodes do not appear as failed electrodes The term SKIP is used throughout this manual and also appears in the LCD during the programming sequence
12. ilure criterion failure FAIL RESPONSE is user selectable See Sect 5 With the FAIL RESPONSE set to STOP the unit will issue 3 short beeps on each failed lead stop and read continuously until the test is resumed by pressing the START key While testing pressing the START key at any time will stop testing A second press of the START key returns the unit to the beginning of the test sequence With the FAIL RESPONSE set to COMPLETE the test sequence will be completed without stopping for failed leads Completion of the test sequence is announced by 1 long beep and the legends TEST COMPLETE ALL LEADS OK if all leads are good OR 5 short beeps OR TEST COMPLETE XX LEADS FAILED if any leads failed The failed leads may be re tested by using the UP DOWN keys During re test the reading is continuous Press the START key at any time to start the test sequence GY General Devices 4 2 4 TESTING INTERMITTENT LEADS If the meter encounters an intermittent lead See Section 7 1 5 the instrument will issue three long beeps and INTERMITTANT is displayed on the LCD Test the suspect lead wire by lightly pulling on it from both ends If the lead wire is bad it will read OVER RANGE and light the RED or yellow POOR LED Defective wires should be immediately discarded 4 2 5 DC OFFSET MEASUREMENT In the DC OFFSET MODE the DC Offset voltage of each lead is measured The leads are selected using the UP and DOW
13. is device and the patient must comply with FDA Performance Standard 21 CFR Part 898 Consult your lead wire cable supplier or manufacturer to insure proper compliance 2 PRODUCT INTRODUCTION 2 1 PRODUCT DESCRIPTION The PREP CHECK PLUS is a compact battery powered hand held meter used to measure the electrical impedance and offset voltage of bio potential electrodes for polysomnography and other similar applications Many features are user defined enhancing speed and convenience The EZ Set programming option permits fast and easy user customization further enhancing the instruments utility The meter is self testing and self calibrating insuring reliable accurate readings Measurement data as well as operating cues are presented on a large illuminated alphanumerical readout with interpretation assisted by color coded GOOD and POOR lamps as well as audible cues Lead selection is either manual or automatic with several methods of response to bad or suspect leads Special features permit quick identification of intermittent lead wires Impedance measurements are made between the selected electrode and all other electrodes simplifying the identification of problem electrodes electrode sites and lead wires A front panel mounted connector provides connection to the headbox Many automatic and user settable features simplify operation The PREP CHECK PLUS is housed a compact ergonomically designed impact resistant
14. lf off and then turn it back on If it passes the self test auto calibration it should be operating properly Should the meter fail to pass these checks refer to Section 7 Service and Maintenance for instructions 6 2 CONNECTORS CABLES AND ADAPTER CHECKS Connectors cables and adapters are KNOWN to be a prime source of problems particularly intermittent problems See Sections 7 1 5 amp 4 2 4 Testing Intermittent Leads Verify that all such elements are properly connected and replace with known good ones whenever possible 6 3 LEAD WIRE CHECKS Lead wires are frequent sources of problems particularly intermittent ones See Sections 7 1 5 amp 4 2 4 Testing Intermittent Leads Test lead wires by touching the electrodes or lead wire ends together and checking for impedance less than 100 ohms Defective lead wires should be immediately discarded to avoid future difficulties 6 4 ELECTRODE CHECKS Electrodes are checked in much the same way as lead wires touching them together impedance below 100 ohms Should the readings be higher than expected this should be discussed with your electrode supplier 6 5 ELECTRODE SITE PREPARATION Improper electrode site preparation is the most common cause of problems To perform a good site preparation use only material specifically intended for this purpose Be sure the materials are used in accordance with the directions supplied by the manufacturer If all preceding probl
15. ont panel keys 5 3 3 2 TEST CURRENT FREQUENCY Typical EEG test frequency is 20 or 30 Hz but 30 Hz is recommended The recommended test frequency for ECG is 10 Hz 5 3 3 3 AUTO OFF TIME OUT The instrument will automatically turn itself off after the last control key operation OR the conclusion of an automatic test sequence The time period is determined by the AUTO OFF TIME OUT period setting The Auto Off Time out may be set between 10 to 2 550 seconds in 10 second increments 5 3 3 4 GOOD POOR LIMITS The GOOD POOR limits may be set for values between 1K and 100K in 100 Ohm steps The limits are not permitted to overlap 1 e the POOR limit may not be set at a lower value than the GOOD limit The limits are set in accordance with the criterion established for your organization or for particular applications 5 3 3 5 FAILURES amp FAILURE RESPONSE FAILURE CRITERION refers to classifying failures as either IMPEDANCE GREATER than the POOR limit OR IMPEDANCE GREATER than the GOOD limit For questionable electrodes it may be desirable to have a separation between the two limits FAILURE RESPONSE refers to how the instrument responds to failures in the automatic test mode The PREP CHECK PLUS may be set to manage failed leads in either of two ways e STOP Unit stops and beeps on each failed lead CONTINUE The unit will beep on each failed lead to advise the user of problems but will not stop until the end of the test sequen
16. r noisy signal Intermittents are difficult to troubleshoot because the problem may not exhibit at the time the wire is tested An intermittent wire will usually fail with slight pulling from both ends during testing 7 2 PRODUCT SPECIFICATIONS 7 2 1 Measurements Performed Impedance amp Offset Voltage 7 2 2 Electrodes Tested 20 7 2 3 Electrode Selection Automatic or manual 7 2 4 Electrode Headbox Connection Twenty 0 060 shrouded safety DIN jacks OR Multi pin connector 7 2 5 Self Test amp Calibration Self Test amp Cal Automatic on start 7 2 6 Primary Display Back lit 0 4 5x7 Char Dot Matrix LCD 7 2 7 Audio Alert 3 KHz Piezo Element 7 2 8 Impedance Measurement Range 0 to 199 900 ohms 7 2 9 Impedance Measurement Method Each electrode to all others 7 2 10 Impedance Resolution 100 Ohms 7 2 11 Impedance Accuracy 3 of reading 200 ohms 7 2 12 Impedance AC Test Current Sine Wave 9 0 uA RMS 10 7 2 13 Impedance DC Test Current 0 0 uA DC 12 GY General Devices 7 2 14 Impedance Test Current Frequency User selectable 10 20 amp 30 Hz 7 2 15 Impedance Measurement Speed 0 8 lead sec 10 Hz 1 25 lead sec 20 Hz 1 6 lead sec 30 Hz Note Unstable readings reduce speed 7 2 16 GOOD POO
17. sment e Automatic self test auto calibration for reliability of reading e Manual or automatic test modes e User selectable GOOD POOR criterion e User settable Skip Lead feature to remove unused leads from testing sequence e Two user selectable strategies to assess and correct electrode problem e User selectable test current frequency EZ Set PC Software option for fast simplified user customization e Long lasting inexpensive batteries with battery life enhanced by Auto Off feature e Compact lightweight easy to hold rugged cabinet 2 4 OPTIONS AND ACESSORIES EZ SET PC SOFTWARE Additional features for customized operation are available with the EZ Set PC software See Section 5 3 3 CONNECTION TO EQUIPMENT PLUS is provided with e For most EEG applications a variety of multi pin connector types are available to mate with different equipment types Contact General Devices for specific information e For polysomnography applications a model is available with twenty 20 0 060 safety DIN connectors These mates with most standard electrode lead wires Adapters are available to permit mating with older 0 080 pin jack connectors however these adapters are very unreliable and should be used with caution Note Should it be necessary to use lead GY General Devices identification names OTHER than those on this unit s front panel labels with other names may be placed over the fron
18. sncsenstenss 13 9 1 Figure 9 1 DIMENSIONS AND PHYSICAL CHARACTERISTICS 9 2 Figure 9 2 CONNECTING PLUS TO PC SERIAL PORT 9 3 Figure 9 3 EZ SET PROGRAMMING SCREEN 10 15 GY General Devices 1 GENERAL INFORMATION 1 1 OVERVIEW OF USER S MANUAL This manual provides operating programming troubleshooting and service information for the General Devices EIM 107 PLUS multi lead electrode impedance meter for polysomnography and EEG electrode assessment An addendum page is included to accommodate special instructions for certain units 1 2 CAUTIONARY NOTICES 1 2 1 This product must be used in accordance with the instructions provided with this manual To maintain the manufacturer s warrantee and insure safe operation under no circumstances is the device to be opened or modified without the express written consent of General Devices 1 2 2 Check ADDENDUM page for special instructions for certain units 1 2 3 Do not allow fluids to enter instrument 1 2 4 Do not submerge instrument in fluids of any kind 1 2 5 Do not use the instrument should it in any way appear to malfunction 1 2 6 Do not connect the instrument to a patient while programming with the EZ Set software 1 2 7 All lead wires and cables providing direct connection between th
19. t panel and the unit rep programmed to reflect these new names on the LCD readout See Section 5 SETTING USER SELECTABLE FEATURES 4 OPERATION IMPORTANT The PREP CHECK PLUS possesses many user selectable features To insure a better understanding of these features and the ways they may be best employed to satisfy the unique needs of each user it is advisable that Section 5 SETTING USER SELECTABLE FEATURES be reviewed prior to operating the instrument A QUICK GUIDE TO OPERATION In AUTOMATIC mode the PREP CHECK PLUS is operated as follows e Connect the instrument to the desired electrodes e Press the START key e The unit will indicate SELF TEST PLEASE WAIT e After several seconds BATT OK Cal OK appears and is ready for use e Press the START key a second time e The instrument will sequentially test all the non skipped electrodes e The conclusion of the test sequence is indicated in the display by TEST COMPLETED and long beep and TEST OK if all electrodes are GOOD OR 5 short beeps and displays LEADS FAILED PRESS UP DOWN KEYS TO VIEW POOR LEADS e Failed leads are viewed and re tested using the UP and DOWN keys Each failed electrode may be corrected at this time OR the overall results may be reviewed to determine if the problem is common to many electrodes such as will occur with a bad batch of electrodes or an unconnected cable e The instrument will automatically
20. turn itself off after the programmed time interval MANUAL amp DC OFFSET VOLTAGE modes operate in the same manner except that the UP DOWN keys are used to select the electrodes and the readings are continuous until a new electrode is selected 4 1 DESCRIPTION OF CONTROLS AND INDICATORS This section describes the PREP CHECK PLUS s control keys readouts and audible alerts 4 1 1 START KEY The start key is used to e Turn the instrument on e Initiate an automatic testing sequence e Immediately return to the beginning of the test sequence It is also used in programming as described in the programming section GY General Devices 4 1 2 MODE KEY The mode key is used to select manual test automatic test DC Offset voltage measurement or programming mode 4 1 3 UP amp DOWN KEYS The up amp down keys are used to increment and decrement electrode selection to the next or previous non skipped electrode It is also used in programming as described in the programming section 4 1 4 LCD READOUT The LCD readout is used to indicate the e Number and user defined name of the electrode being measured e Impedance and offset voltage reading of the electrode being measured e Pass Fail good poor status of the electrode being measured e Result of the automatic self test auto cal process e Status of the battery e End of the automatic test sequence It is also used in programming as described in the programming section 4 1
21. uctions that then appear on the monitor screen 5 3 2 CONNECTING THE PC TO THE PLUS SEE FIGURE 9 2 5 3 2 1 Locate the EZ Set Programming Cable 5 3 2 2 Connect the EZ Set cable to the PC s 9 pin serial connector Note If your PC does not have a 9 pin connector conversion adapters are commonly available 5 3 2 3 Plug the EZ Set cable s programming jack 2 5 mm jack into the PREP CHECK PLUS 5 3 3 PROGRAMMING THE PREP CHECK PLUS To begin program the PREP CHECK PLUS select EZ Set from Start menu The programming screen will appear as shown in Figure 9 3 Enter User setting information into each screen entry box as follows GY General Devices 5 3 3 1 LEAD INFORMATION Each lead may be assigned a user defined name in addition to the lead number the lead number relates the lead to its position on the front panel A name may consist of any combination of up to 8 characters letters numbers or spaces Leads which are unused may be removed skipped from the test sequence Unless skipped unused leads will always appear as failed leads increasing test time and making troubleshooting more difficult Leads are marked to be skipped by selecting the desired lead on the screen and pressing the LEFT mouse key A check mark will appear in the SKIP LEAD box Once marked as SKIPPED that lead will not appear in either the manual or the automatic test sequence The skip lead feature is also programmable from the fr
22. unit has completed the automatic self test auto calibration press the MODE key and select either MANUAL or AUTOMATIC e Press the START key to resume normal operation GY General Devices 5 1 2 MARKING LEADS TO BE SKIPPED e After start up press the MODE key until the readout indicates PROGRAM e The readout will then display the programming instructions in scrolling fashion e Use the UP DOWN keys to select the lead to be skipped e Mark the lead to be skipped by pressing the START key e Continue for all leads to be marked e Leads may be unmarked by the same process e Press the MODE key to return to normal operation 5 2 EZ SET PC SOFTWARE USER SETTINGS With the EZ Set PC Software Option the PREP CHECK PLUS Electrode Impedance Meter may be quickly and easily programmed using any standard PC with Microsoft Windows 7 amp 8 and a standard serial port See Figure 9 2 The EZ Set Option includes an EZ Set Interconnect Cable which plugs into the computer s serial port COM 1 2 etc and into the programming jack on the underside of the instrument Caution Do not connect the PREP CHECK PLUS to a patient while programming with the EZ Set software 5 3 INSTALLING THE EZ SET PROGRAMMING SOFTWARE IN YOUR PC 5 3 1 1 Visit the GD website Product Support tab search for devices specific section and download install file EZ Set 5 3 1 2 Select RUN on the monitor screen s pop up dialog box e Follow the instr
23. urned to the factory for corrective action See Section 8 for instructions 7 4 BATTERY REPLACEMENT When the meter batteries require replacement BATT LO legend in the digital display the unit may be used but the battery should be replaced as soon as possible Note If the battery is VERY low the unit will NOT turn on at all Replace with two standard 1 5 Volt AA Alkaline batteries The battery is located beneath a sliding panel on the underside of the instrument Observe the direction polarity of the batteries when installing new batteries 7 5 MAINTENANCE amp PERIODIC CALIBRATION The PREP CHECK PLUS is fully self calibrating and requires no periodic re calibration calibration checks or maintenance other than battery replacements and periodic cleaning 7 6 CLEANING The enclosure may be cleaned with mild cleansing agents Windex DO NOT use abrasive cleaning agents scouring powder or bathroom cleaners DO NOT apply excessive liquid near connector or openings where fluid seepage may damage internal components 13 GY General Devices 7 7 SERVICING The impedance meter contains no user serviceable parts The entire unit is to be returned to the factory upon any failure 8 PRODUCT WARRANTEE AND SERVICE 8 1 WARRANTY TERMS AND CONDITIONS The PLUS is warranteed against all defects in parts and workmanship for year from date of delivery General Devices will repair or replace any unit
24. which proves to be defective during the warranty period provided proper use and maintenance procedures are followed as described in this manual The warranty provides replacement parts and labor F O B Ridgefield New Jersey General Devices or its agents are not responsible for any problems associated with improper handling of the device damage due to fluid entry unintended usage unauthorized repairs or opening of the enclosure or abuse Semi annual and annual inspections are not provided for under this warranty No other party is authorized to make any other warranty or assume any liability for General Devices products No other warranty either expressed or implied will be recognized 8 2 NON WARRANTY SERVICE Non Warranty service is provided by General Devices at its current hourly rate Contact factory for current information Work performed on General Devices premises is billed for actual bench time plus parts and shipping 8 3 FACTORY TECH SUPPORT HOURS Factory technical telephone support is provided during normal working hours Monday through Friday 10 00 to 5 00 E S T Direct factory services are NOT available beyond regular business hours 8 4 RETURNING GOODS TO FACTORY If after consulting with the factory materials have to be returned to the factory a return authorization number MUST be obtained DO NOT RETURN ANY MATERIALS WITHOUT A RETURNED MATERIALS AUTHORIZATION RMA NUMBER 14 N General Devices
25. y of 30Hz 750 Ohms 20Hz and 1 5K Ohms at 10Hz 3 When testing ISO GND impedance in the MANUAL mode allow an additional several seconds for the impedance reading to settle to its final value 3 Impedance readings made from the ISO GND lead with NO patient connections may read INTERMITTANT as opposed to reading OVER RANGE as on all other leads Grass Telefactor is a Product Group of Astro Med Inc Website www Grass Telefactor com 17
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