INSTRUCTION MANUAL DM383B 1-800-547-5740 • Fax: (503) 643-6322 www.ueitest.com • email: info@ueitest.
Introduction The DM383B is a handheld, battery powered digital multimeter that is designed to meet IEC 1010-1 (EN61010-1), standards, the EMC directive, and other safety standards (see “Specifications”). It will measure up to 1000 volts DC and 750 Volts AC in a CAT II environment and up to 600 volts AC and DC in a CAT III environment.
6. 10 Amp, Fused, Meter Lead Terminal: Use this input terminal (port) when measuring amps greater than 400 mA, but less than 10 Amps AC or DC. Use caution when selecting amperage measurements on the rotary dial. Remember amperage measurements are made in series with your circuit. LCD Display Functional Description 1. Indicates that the audible continuity mode has been selected. 2. Indicates that diode testing has been selected. 3. Indicates the meter is reading DC voltage or current. 7.
Operating Instructions Functional Description The DM383B is designed to make basic electrical measurements quickly and easily. The LCD provides range and function information while the extra large numerical data display can be monitored from a distance. This is a 4000 count, manual-ranging digital multimeter that employs high input impedance to ensure accurate readings and circuit isolation for digital and analog devices. The input ports use standard four-millimeter insulated-plug test leads (provided).
Note: When measuring critically low ohm values, touch the tips of the test leads together and record the reading. Subtract this value from the total circuit resistance of the unit under test to obtain the actual resistance value. For resistance measurements above one Megohm the display might take a few seconds to stabilize. This is normal for high resistance readings. Use caution when measuring resistance in extremely sensitive electronic devices.
To measure AC or DC current flow, (in amps), insert the test leads into the meter as previously instructed (selecting the proper test lead ports), then follow these steps: 1. Ensure power is off to the circuit to be tested. 2. Turn the meter on. 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.
Fuse Replacement Troubleshooting WARNING! Disconnect the test leads from the circuit under test and from the meter prior to removing or installing fuses! Replace the bottom fuse with the fuse specified for this meter ONLY! To replace a blown fuse, perform the following procedures: 1. Turn off the meter. 2. Remove the rubber boot from the meter, starting at the top. 3. Place meter face down on a clean cloth. 4. Remove the screws from the rear case.
This unit contains no user serviceable parts beyond those listed in the table. In the event your instrument is physically damaged or does not function properly after taking the listed action, please return the instrument to UEi following the warranty and service instructions.
DM383B Digital Multimeter Limited Warranty The DM383B 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.