LCD Auto Range Multimeter (220-0163) Operation Faxback Doc. # 6291 Using the Stand The fold-out stand lets you set the multimeter on the benchtop or hang it from a hook. NOTE: The upper and lower mounting holes are located on either side of the tab on the mounting bracket. To set the multimeter on a benchtop, remove the stand by pressing in on its sides, then attach it to the two lower mounting holes. To hang the multimeter from a hook, remove the stand by pressing in on its sides, then attach it to the two upper mounting holes. NOTE: Do not use the concave holes above the upper mounting holes. Using the Test Leads Use only the same type of test leads as those supplied with the multimeter. The local Radio Shack store sells replacement test leads. 1. For all voltage, resistance, and current measurements of less than 400 mA, plug the red test lead's right-angled end into the multimeter's + V ohms A jack and push in. For current measurements of over 400mA (and under 10 A), plug the red test leads' right-angled end into the multimeter's 10A MAX jack and push in. 2. Plug the black test leads' right-angled end into the multimeter's -COM (common) jack for all measurements and checks. Warning: Always turn off power from the circuit you are about to measure before you probe the test leads into high-voltage points. Cautions: Although these test leads are rated for 1200 volts, the maximum rating of this multimeter is 1000V DC or 750V AC. Do not try to measure any voltage that exceeds the multimeter's ratings. Use extreme care when you measure high-voltages. Be sure you always select the correct function before you attach the test leads to the circuit or component to be tested. 3. Connect the test lead's probe ends (thin straight ends) to the circuit or component to be tested. Learning the Controls Warning: Do not operate the multimeter until you insure that the batteries are correctly installed and the battery compartment cover is properly closed. Before you operate the multimeter for the first time, follow these steps to confirm that the multimeter is operating correctly and to familiarize yourself with the multimeter's operation and displays. 1. Press POWER to turn on the multimeter. All the display elements appear on the display for 1-2 seconds as a self test. Auto range and the function buzzer automatically turn on. 2. Set the function switch to V "equals" key or V "approximate" key. The multimeter automatically selects the DC measurement mode. AUTO, "equal", The Speaker symbol, and V appear on the display. 3. Push RANGE SELECT to set the multimeter to the manual range control mode RS appears on the display 4. Press RANGE SELECT several times to familiarize yourself with the display. The decimal point shifts as shown in the following table as you move through the voltage ranges. Function Range Display DCV/ACV 4 V .000 V 40 V 0.00 V 400 V 00.0 V 1000 VDC/750 VAC 000 V 400 mV 00.0 mV 5. Press SELECT to select the AC measurement mode V, "approximate" key, and Speaker Symbol will appear on the display. Then repeat Steps 3 and 4. NOTES: In the 400 mV range (DC and AC), with leads not connected to any circuit, the display might show a phantom reading. This is normal. The high input sensitivity produces a wandering effect. When you connect the test leads to a circuit, a real measurement appears. (You can use the 400mV range only in the manual range control). See the unit of measure on the display to distinguish the range when two ranges have the decimal point in the same position. For example, on the 400mV range the multimeter display is mV versus V on the 400V range. 6. Set the function switch to ohms ))). The multimeter automatically selects auto range and the resistance measurement mode. 7. Push RANGE SELECT to set the multimeter to the manual range control mode. RS appears on the display. 8. Press RANGE SELECT several times to familiarize yourself with the display. The decimal point shifts as shown in the table below as you move through the resistance ranges. Functions Display Range Resistance O.L Mohm 40 Mohms OL. ohms 400 ohm .OL Kohms 4 kohm O.L kohm 40 kohm OL. Kohm 400 kohm .OL Mohm 4 Mohm 9. Press SELECT to select the continuity check mode, OL., Speaker Symbol ))), and ohm appear on the display. Functions Display Range Continuity Check OL. ohm 400 ohm (Fixed) 10. Set the function switch to A "equals" & A "approximate" key. The multimeter automatically selects auto range and the DC current measurement mode. 11. Plug the test leads into the multimeter as follows: Plug the black test lead into the -COM jack. For current measurements under 400 mA, plug the red test lead's right-angled end into the multimeter's + V ohms A jack. For current measurements of over 400 mA (and under 10 A), plug the red test lead's right-angled end into the multimeter's 10A MAX jack. Caution: Always start with the 10A MAX jack if you do not know the amount of current to measure. 12. Push RANGE SELECT to set the multimeter to the manual range control mode. RS appears on the display. The decimal point shifts as shown in the table below as you move through the two DCA/ACA ranges below 400mA. 13. Press RANGE SELECT several times to familiarize yourself with the display. For current measurements under 400 mA: Functions Display Range DCA/ACA 0.00 mA 40 mA 00.0 mA 400 mA For current measurements of over 400 mA and under 10A: Functions Display Range DCA/ACA .000 A 4 A 0.00 A 10 A 14. If you are not ready to make measurements, press POWER to turn off the multimeter. All elements disappear from the display. (CJD/all-07/14/94)