5 380973 Ver. 1.01 8 /99
5.6 Frequency Measurements
Note:
Clamp (ammeter) and test lead (voltage) frequency measurements can both be
made. Check the specifications for differences in sensitivity. When reading frequency via
the clamp jaw the current must be at least 5A (minimum threshold).
1. Set the Rotary Selector switch to the Hz function.
2. Connect the black test lead to the COM terminal and red test lead to the V/
Ω
/uF terminal
and connect the other ends of the test leads to the circuit, component, or other device
under test for test lead measurements; otherwise use the clamp jaw for current
measurements.
3. Read the displayed measurement value on the LCD.
5.7 Resistance Measurements
Warning:
Before attempting any in-circuit resistance measurements remove power from
the circuit under test and discharge any capacitors.
1. Set the Rotary Selector switch to the
Ω
function.
2. Connect the black test lead to the COM terminal and red test lead to the V/
Ω
/uF terminal
and connect the other ends of the test leads to the circuit, component, or other device
under test.
3. Read the displayed measurement value on the LCD.
5.8 Capacitance Measurements
Warning:
Discharge capacitors and circuit before testing.
1. Set the Rotary Selector switch to the uF function.
2. Remove at least one leg of a capacitor from its circuit before testing.
3. Connect the black test lead to the COM terminal and red test lead to the V/
Ω
/uF terminal
and connect the other ends of the test leads to the circuit, component, or other device
under test.
4. If measuring a polarity sensitive electrolytic capacitor, touch red test lead to the positive
side of the cap. and the black test lead to the negative side.
5. Read the displayed measurement value on the LCD.
5.9 Temperature Measurements
1. Set the Rotary Selector switch to the “C / F” function.
2. Set the temperature units with the temperature units key.
3. Insert the type-K thermocouple adapter into the meter (positive end to the V/
Ω
/uF meter
terminal).
4. Insert the thermocouple into the thermocouple adapter.
5. Secure the beaded end of the K-type thermocouple to the surface to be measured.
6. Read the displayed temperature value on the LCD.
5.10 Continuity Measurements
Warning:
Before attempting any in-circuit measurements remove power from the circuit
under test and discharge any capacitors.
1. Set the Rotary Selector switch to the diode/continuity function (diode symbol).
2. Connect the black test lead to the COM terminal and red test lead to the V/
Ω
/uF
terminal and connect the other ends of the test leads to the circuit, component, or other
device under test.
3. When the resistance measured is lower than 40
Ω
, the meter will sound an audible tone.
