Multimetrix CM 660, User Manual

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3. For AC, press SELECT to measure the frequency.
The Hz icon (27) appears (if U< 0.2V and F< 20 Hz, the “ ----- “
appears). Press SELECT to display the voltage.
7.4 TO MEASURE DC CURRENT (CM 685)
Please read the safety recommendations before use.
Automatic measurement ranges: 40 to 1000A DC (3 ranges).
1. Set the selector (3) to .
2. Press SELECT (4) to reset to zero.
Reset is only active on the 40A range.
3. Take the reading for the current once it has stabilised.
The icon (15) indicates reversal of the contact points’
polarity. “ ----- ” indicates that the capacity has been exceeded.
7.5 TO MEASURE AC CURRENT AND FREQUENCY
Please read the safety recommendations before use.
Automatic measurement ranges: 40 to 1000A AC (3 ranges).
Frequencies: 20 to 4000 Hz (2 ranges).
1. Set the selector (3) to .
2. Take the reading for the current once it has stabilised.
“ ----- ” indicates that the capacity has been exceeded.
To store the peak value in memory, see § 7.10.
To display the minimum and maximum values, see § 7.9.
3. Press SELECT to measure the frequency.
The Hz icon (27) appears (if A< 2A and F< 20 Hz, the “ ----- “ sign
appears). Press SELECT to display the current.
4. Open the clamp, release the conductor and set the selector
to OFF.
7.6 TO MEASURE RESISTANCE
Please read the safety recommendations before use.
There must be no voltage in the circuit.
Automatic measurement ranges: 400 Ω to 40 M Ω (6 ranges).
1. Set the selector (5) to .
If OL is displayed, this indicates that capacity has been
exceeded.