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Summary of Contents for BK Precision 881
- Page 1 Instruction Manual Model 881 In-Circuit ESR & DCR Cap Tester GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
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Page 2: Safety Guidelines
SAFETY GUIDELINES WARNING An electrical current of over 10 milliamps passing through the heart will stop most human hearts. Voltage of as low as 35Volts dc or ac rms should be considered hazardous since it can produce lethal current under certain conditions. Be sure to observe the following safety precautions: There are no high voltages in the Cap Tester, but the equipment under test usually contains hazardous high voltage. -
Page 3: Operation
In-Circuit ESR & DCR Cap Tester Introduction: The In-circuit ESR & DCR capacitor tester is specially designed to measure ESR (equivalent Series Resistance) on capacitors in the range of 0.47uf and up, in or out of circuit. The output test frequency of the meter is a 100 KHz SINE WAVE. - Page 4 Controls and Indicators 1. Power Switch – Power on or off 2. DCR Low Indicator – LED on when DCR low then 30 ohms 3. Mode switch – Selects test capacitor ESR or test capacitor DCR&ESR both. 4. ESR or DCR Indicator – Indicate the ESR or DCR 5.
- Page 5 APPLICATIONS Using the tester to measure electrolytic capacitors in or out of circuit. When the meter is turned on, it will automatically calibrate the internal circuit, and then it will beep once to indicate it’s ready. (Note: Before the unit beeps to signal it is ready, don’t have the tweezer’s test probes shorted together or connected to a capacitor, otherwise the meter will continue to sound an alarm until the test probe is opened or the capacitor is removed.) The meter has two modes for performing in-circuit ESR measurements (“DCR &...
- Page 6 On the “DCR & ESR” mode, first it discharges the capacitor, then it checks the DC resistance and if the DC resistance is less than 30 ohm, it will stop on the DCR cycle, otherwise, it measures the ESR and indicates the range of the value with the 25 LED bar. On this mode, the meter detects shorted capacitor in its DCR cycle.
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Page 7: Specifications
SPECIFICATIONS Open circuit probe voltage 15mV pp Output test frequency 100 KHz sine wave Measures ESR ESR range ohms 0.1 – 30 (25 segment LED bar scale) Beeps from 1 to 5 beeps depending on ESR of capacitor Measures DCR DCR range ohms 0.5 –... -
Page 8: Service Information
Service Information Warranty Service: Please go to the support and service section on our website to obtain a RMA #. Return the product in the original packaging with proof of purchase to the address below. Clearly state on the RMA the performance problem and return any leads, probes, connectors and accessories that you are using with the device. -
Page 9: Limited One-Year Warranty
Limited One-Year Warranty B&K Precision Corp. warrants to the original purchaser that its products and the component parts thereof, will be free from defects in workmanship and materials for a period of one year from date of purchase. B&K Precision Corp. will, without charge, repair or replace, at its option, defective product or component parts.
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