MODEL 1089e CHECKTRODE®
Contents
1. MODEL 1089e CHECKTRODE UFI 545 Main Street Suite C 2 Morro Bay CA 93442 Introduction The Checktrode is used to test the integrity of electrode skin contacts in physiological and or bio electrical data acquisition systems Under microprocessor control a highly accurate constant current AC signal is impressed across the electrodes under test A signal derived from this excitation lights one of several LED lights to indicate the impedance range between the electrodes and thus the electrode skin contact quality Controls and connectors Power on test switch e Press and release to turn on Model 1089e e All LEDs light in sequence as system test e Unit then indicates electrode quality by illuminating appropriate LED e Powers down automatically after 3 minutes e LEDs blink in continuous cycle when battery needs to be replaced Input connectors Plug the electrodes to be tested into the 0 060 DIN safety jacks one red and one black located on the rear panel Using the Checktrode Prepare electrode sites abrade skin and use a conductive gel for good electrical contact with skin Attach at least two electrodes to subject then attach electrode leads to electrodes as shown Connect two electrode leads to input jacks Press power switch if Checktrode is not already turned on Unit performs self test LEDs light up in sequence One LED then remains lit to show electrode contact impedance betw2. een the two connected electrodes Meaning of LEDs and indicated action lt 5 KQ excellent skin prep proceed with recording and expect good results lt 10 KQ good skin prep but expect some noise in the recording lt 20 KQ fair skin prep Contact impedance may decrease with time but for best recording quality electrodes should be removed and skin re prepped lt 50 KQ or gt 50 KQ bad skin prep Even slight patient motion will cause noise Electrodes must be removed and skin re prepped Model 1089 e specifications e Impedance ranges e Test frequency e Test current e Input connectors e Power supply e Size e Weight lt 5K ohms lt 10K ohms lt 20K ohms lt 50K ohms gt 50K ohms 30 Hz sine wave lt 10 microamps 0 060 DIN jacks Standard 9V alkaline battery 5 x 2 75 x 1 5 127 x 70 x 38 mm 5 2 ounces 146g Warranty and repair All UFI instruments are warranted against defects in materials and workmanship to the original purchaser for a period of one year from the date of original purchase This 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 or accident beyond normal usage or has had the serial number altered defaced or removed All questions regarding the warranty should be directed to Customer Service Departme
3. nt UFI 545 Main Street Suite C 2 Morro Bay CA 93442 Email mail ufiservingscience com No third party 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 and serial numbers 10 14 10
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