Acoustic Continuity Check - VOLTCRAFT VC5070 Notice D'emploi

Proceed as follows to measure direct currents of up to 250 mA/DC:
- For measuring in the mA/µA range, select the corresponding measuring range.
- Connect the black measuring line with the COM socket (6) and the red measuring line with the mA
socket (7).
- Now perform null balancing.
- Observe the correct polarity (red = + / black = -) and connect the
two test prods in series with the test object (battery, circuit, etc.).
- If the polarity is not correct, no value is displayed. The built-in pro-
tective diode prevents the measurement. Stop measuring and
measure again observing the right polarity.
- Read off the measured value on the "A" scale.
- After measuring, put the rotary switch in the "OFF" position to turn
off the multimeter.
e) Acoustic continuity check
Make sure that all circuit parts, switches, components and any other test objects are
currentless and discharged.
The continuity check allows a quick check e.g. of a line. If forward resistance is <200 Ohm, a beep
sounds with the displayed measuring result.
To measure, proceed as follows:
- Select the measuring
- Connect the black measuring line with the COM socket (6) and
the red measuring line with the VΩ socket (7).
- Now perform null balancing.
- Connect the two test prods with each other and wait until the
pointer has stabilised. A value of approx. 0 Ohm must be dis-
played. In case of a deviation, adjust the pointer to 0 Ohm using
the 0 Ohm calibration control (9). If calibration fails, the two AA
batteries have to be replaced.
- Now connect the two test prods to the test object (component, switch etc.).
- Read off the measured value on the "Ω" scale. A beep sounds when the resistance value is <200
Ohm.
- After measuring, put the rotary switch in the "OFF" position to turn off the multimeter.
range on the rotary switch . -
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