INSTRUCTION MANUAL DM384 1-800-547-5740 • Fax: (503) 643-6322 www.ueitest.com • email: info@ueitest.
Introduction The DM384 gives you advanced troubleshooting technology for challenging tasks. It has numerous high-end features like MIN/MAX capture for unattended measurement monitoring, capacitance for checking run/start capacitors, and frequency for quick verification of g e n e rators, inverters, and control circuit operation. The large LCD display has an electro luminescent backlight for easy viewing at a distance.
C o n t rols and Indicators 1. Digital Display: Readings are displayed on a digital, 4000 count display, along with the appropriate polarity indication and range and function enunciators (icons). The decimal point moves automatically in the autoranging mode and remains in place when recording or when the range is manually selected. 1 2. Power Push-button: Used to turn the power to the meter on or off. 3.
11. The Diode Symbol indicates that diode testing has been selected. 12. The Audible Continuity icon indicates that the continuity mode has been selected. 13.
Selecting the Proper Test Lead Ports The test leads must be plugged into the proper ports to make electrical measurements. Press the test lead plugs firmly into the meter ports to ensure they are fully seated.
To make capacitance measurements, plug in the test leads as instructed, then: 1. Discharge the capacitor to be tested as prescribed above. 2. Isolate the capacitor by lifting at least one of its two legs away from the circuit. 3. Select the capacitance position “ function switch. “ on the rotary 4. Connect the red test lead to one side of the capacitor, and the black to the other. 5. Read the measured value.
Measuring AC Voltage WARNING! To avoid the risk of electrical shock and instrument damage, input voltages must not exceed the limits specified for the installation category you are working in. DO NOT attempt to take any unknown voltage measurements that may exceed these values. Note: When taking voltage measurements your meter must be connected in parallel to the circuit element, under test. To measure AC volts plug in the test leads as instructed, then: 1. Turn off the meter. 2.
Battery Replacement Always use a fresh replacement battery of the specified size and type. Immediately remove the old or weak battery from the meter and dispose of it in accordance with your local disposal regulations. Batteries can leak chemicals that corrode electronic circuits. If your meter is not going to be used for a month or more, remove and store the battery in a place that will not allow leakage to damage other materials.
Troubleshooting If I See This Malfunction Instrument does not turn on I Should Check For Battery voltage On/Off switch position Then Take This Corrective Action Replace low battery Ensure button moves freely and is in the on position Instrument turns on Look for MAX HOLD icons but LCD indicates MAX button pressed displayed on the LCD some unreasonable or HOLD button pressed -Turn off one or unchanging value both buttons A value appears on Short test leads together screen with no input If a value near 000
General Specifications These specifications are based on an instrument operating in an ambient temperature of 5 to 90 degrees Fahrenheit, at a relative humidity of less than 80%, which is within one year of calibration. The accuracy column indicates the percent of possible error based on the reading displayed, plus an additional allowance for drift based on the value of the least significant digits of the selected range. This is stated as: ±(N% + N digits).
DM384 Digital Multimeter Limited Warranty The DM384 is warranted to be free from defects in materials and workmanship for a period of five years from the date of purchase. If within the warra n ty period your instrument should become inoperative from such defects, the unit will be repaired or replaced at UEi’s option.
