How are the various quantities measured?
6,000- and 60,000-count digital multimeters
37
How are the various quantities measured? (continued)
10. Resistive power
(
MTX 3291, only
)
1. Press:
.
2. Press
again
.
3. Select AC+DC, AC or DC coupling of the signal by pressing
(the default coupling is AC+DC).
Depending on what you select, the screen displays DC, AC or AC+DC.
4. Connect the black lead to the “COM” terminal and the red lead to “V”.
5. Place the test probes on the terminals of the circuit to be measured.
to measure the
resistance
•
Press
. The display unit indicates the resistance.
•
Press
to store the resistance, which will be used to calculate
the power.
6. Read the measurement value indicated on the display unit:
- the main display unit indicates the power in W (U
2
/R)
- the secondary display unit indicates the resistance measured on the
installation (600 Ohm by default).
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