Review a representative Model 1089NP user manual
Contents
1. front panel CAP When the TEST switch is in this position the reference electrodes are now linked and act as a single reference electrode You can now test each electrode as selected by the Electrode Selector Switch against the reference electrodes in order to assess its connection to your subject 2 USING THE CHECKTRODE CHECKING INTEGRITY OF ELECTRODE CONTACT a Prepare the electrode sites and attach the electrodes b Connect the electrode cap to the mating connector on the back of the unit or insert the electrode connectors for two individual electrodes into the mating connectors on the front panel c Depress the POWER SWITCH Set the FUNCTION SWITCH to 50KQ TEST The display should indicate between 49 5 and 50 5 d Set FUNCTION SWITCH to CONTACT KQ The display will indicate the integrity of the electrode contact Higher impedances are indicative of poor skin preparation and often result in a recording with moderate to severe motion artifacts 5KQ or below Good prep 5KQ 10 KQ OK but can cause some noise 10 KQ 30KQ FAIR might improve with time but for best results should be removed and skin re prepped 30 KQ amp above BAD will cause much noise on the recording with the slightest patient motion REMOVE AND RE PREP e If testing electrodes in your electrode cap slowly switch through the available switch positions to test each available electrode on your cap CHECKING INTEGRITY OF ELECTRODE WIRES a Conn2. 70 1081 FT Model 1081 amp 1081 SNP Model 1089 MK II amp MK III Model 1130 1131 1132 Prices subject to change MODEL 1089 MK III NP CHECKTRODE eff 5 2007 INTRODUCTION The CHECKTRODE Electrode Tester may be used to A Test the integrity of electrode skin contact in physiological and or bioelectrical data acquisition systems B Test the integrity of associated electrode wires used in such systems C Test the quality of the electrodes D Test external batteries 9 V amp others such as used in telemetry and other physiological monitoring systems 1 FUNCTION OF CONTROLS AND CONNECTORS Checktrode model 1089NP 3 morro bay california o1 22 F7 fy ras eal P4 re j P3 T4 canine KN offset mV c4 T5 SMKN battery C3 T6 test test F4 GND F3 FZ FP2 CZ FPI PZ power e POWER SWITCH Push button turns unit ON Power remains ON for approximately 3 minutes then AUTOMATICALLY TURNS OFF FUNCTION SELECTOR SWITCH 4 position switch which selects the measurement function of the CHECKTRODE 50 KQ TEST Connects a precision 50 KQ resistor to the CHECKTRODE INPUT The instrument should read between 49 5 and 50 5 IMPEDANCE KQ Displays the electrode contact impedance in KQ between 0 and 199 9 KQO The display will indicate 1 when the electrode impedance exceeds 199 9 KQ OFFSET mV displays the potential generated by a pair of electrodes when connected to the body K
3. WARRANTY All UFI instruments are warranted against defects in materials and workmanship to the original using purchaser for a period of one year from the date of original purchase The warranty is void if our inspection shows the equipment has been tampered with or installed at variance with factory designated procedures or has been subjected to negligence misuse accident beyond normal usage or has had it s serial number altered defaced or removed All questions regarding the warranty stated above should be directed to CUSTOMER SERVICE DEPT UFI 545 Main Street Suite C2 Morro Bay CA 93442 NO person including any dealer or agent is authorized to assume any liability for UFI When corresponding or communicating with UFI concerning your equipment please include the model number and serial number of the instrument UFI instruments and transducers are subject to continuous improvement We reserve the right to modify any design or specification without notice and without incurring any obligation ALL UFI TRANSDUCERS AND ELECTRODES ARE COVERED BY OUR EXCLUSIVE LIFELINE WARRANTY AS OUTLINED BELOW LIFELINE WARRANTY If your UFI transducer electrode or electrode tester ceases to operate regardless of the cause accidental intentional or whatever RETURN IT TO US We will repair it or replace it with a new one for a minimal handling charge as listed below Model 1010 1010C 1020 1020EC 1020FC 1110 Model 1030 1040 10
4. ect one electrode wire to the RED ELECTRODE INPUT JACK b Energize instrument as above Select CONTACT KQ c Connect the free ends of the wire the snap connector on the CHECKTRODE The display should read 00 0 and not change If the display changes with wire motion there probably is an intermittent open in the wire CHECKING OFFSET POTENTIAL a Connect electrodes as in Section 1 b Select OFFSET with the FUNCTION SWITCH c The display will indicate the potential generated by the half cell combination of two electrodes and the body The reading should be 10 or below BATTERY TEST a Select EXT BATTERY with the FUNCTION SWITCH b Depress POWER button c Connect the battery to be tested to the BATTERY TEST CONNECTOR The display will indicate the battery voltage
5. nown as offset potential this measurement indicates the purity of the metals used in the electrode manufacturing process The lower the reading the higher the purity Readings which vary wildly or which exceed 10 are usually indicative of severe electrode problems EXT BATTERY Reads the voltage of a battery when it is connected to the EXTERNAL BATTERY TEST CONNECTOR ELECTRODE SELECTOR SWITCH When your electrode cap is connected to the connector on the back of the unit this switch allows you to quickly test the contact impedance of the selected electrode on the cap against the linked ear reference electrodes TEST SWITCH The TEST switch allows you to test the linked ear reference electrodes against each other I order to verify their proper connection to your subject or to test each of the electrodes on the electrode cap against the two linked ear reference electrodes together REF When the TEST switch is in this position you can test the reference electrodes against each other If the reference electrodes are separate from the connector which is attached to the electrode cap then you will need to plug the connectors for the electrodes into the connectors provided on the front panel If the reference electrodes are incorporated into the DB25 connector provided on the electrode cap then you need do nothing extra With the TEST switch in this position you can also test any two electrodes attached to your subject using the connectors on the
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