380224 Ver. 1.5 5/05
4
Operation
Voltage Measurements
a. Connect the RED test lead to the "V/Ω" input jack and connect the BLACK test lead to
the COM (-) input terminal.
b. Set the rotary switch to the desired AC or DC voltage range. If the magnitude of the
voltage is not known, set the switch to the highest range and reduce until a satisfactory
reading is obtained.
c. Connect the test leads to the unit under test (load, circuit, etc.) and observe reading on
the LCD. For DC, negative polarity is automatically displayed.
Resistance and Continuity Measurements
a. Set the rotary switch to the desired resistance range or continuity position.
b. Remove power to the circuit under test (external voltage across device under test will
cause invalid readings).
c. Connect the RED test lead to the "V/" input terminal and the BLACK lead to the COM
(-) input terminal.
d. Connect the other ends of the test leads to the circuit under test. For resistance
measurements, the LCD reading is the value of resistance measured. In Continuity
mode, the audible alert sounds if the resistance measured is below 100Ω.
NOTE: The 2000MΩ and 200MΩ ranges have a fixed 10-count offset. When the test
leads are shorted together, the meter will indicate "10".
This residual values (10MΩ on the 2000MΩ and 1MΩ on the 200MΩ range) must
be subtracted from readings taken in these ranges.
Diode Measurements
a. Set the rotary switch to the diode position.
b. Remove power to the circuit under test (external voltage across device under test will
cause invalid readings).
c. Connect the RED test lead to the "V/" input terminal.
d. Touch probes to the diode. A correct forward voltage drop is 0.6V (silicon diode) and
0.3V (germanium diode).
e. Reverse the probe connection to the diode. If the diode is good, "OL" (overload) will
display. If the diode is shorted, a value near 0mV will be displayed.
f. If the diode is OPEN, "OL" will display in both measurement directions.
Capacitance Measurements
a. Set the rotary switch to the desired capacitance range.
b. Connect the RED test lead to the "F" input terminal and the BLACK test lead to the
COM (-) input terminal.
c. Connect the test leads to the capacitor under test, observing polarity for polarized
caps.
d. Read the capacitance value in farads on the meter's LCD.
Temperature Measurements
a. Set the rotary switch to the desired temperature range (C or F).
b. Connect a K-type thermocouple probe with banana jacks to the TEMP and COM input
terminals. Observe proper polarity: The TEMP terminal is for the positive probe lead;
COM is for the negative probe lead.
c. Read the temperature from the LCD display.
