HP Extech 380976 Instrukcja Użytkownika Pobierz pdf (Strona 13)

380976 V3.1 6/08

= W

R(L1)

+ W

S(L2)

T(L3)

KVA K

KVARWW W34

φφ φ

KVA

7. Set the rotary switch to another position to exit this mode and clear the stored data.

NOTE

1. The "+" sign printed on meter must face the power source for accurate

measurement.

2. If the device under test is switching power supply, the KW, PF and

readings

may not be correct.

NOTE

For 3

4W power measurements, W

or W

and W

must be positive. If one shows

negative power, check the connections.

Resistance and Audible Continuity Measurements

WARNING

Before taking any in-circuit resistance measurements remove power from the circuit

under test and discharge all capacitors.

1. Set the rotary switch to the

‘Ω, ’

’

or ‘MΩ

’ position.

2. Insert the test leads into the input jacks. (Black to ‘COM’ and

Red to ‘

Ω’

)

3. Connect the test leads to the circuit or component under test.

4. Read the resistance value on the LCD.

5. For measurements < 40

Ω

, the continuity beeper will sound.

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HP Extech 380976 Instrukcja Użytkownika Strona 13