Manual Velleman DVM4100 (page 10 of 67) (English, German, Dutch, French, Spanish)

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 Right-click the My Computer icon on the Windows desktop, and then click

Properties.

 Click the Hardware tab and then click Device Manager.

 Scroll through the list of installed devices and locate the Ports (Com and LPT)

entry. Click the plus (+) next to this entry to view the installed ports, If no

errors occurred, the “Prolific USB-to-Serial COM Port (COM x)” will appear, COM

x is the port, with x = a specific number.

 Select the default sampling rate or set a desired sampling rate.

 Now press the Start in the PC-LINK SOFT to measure and view the real-time data

or graph in the software interface.

 To disable the serial data output function, switch the meter OFF.

 More information about the PC-LINK SOFT can be found in the help-file of the

software.

7. Operating instructions

Risk of electric shock during operation. Be very careful when

measuring live circuits.

Before measuring, always make sure the meter and/or test probes are not

damaged and verify the connections, selected function and range.

 Never exceed the limit value for protection. This limit value is listed separately in

the specifications for each range of measurement.

 Do not touch unused terminals when the meter is linked to a circuit which is being

tested.

 Only use the meter in the indicated overvoltage/installation category. Never

measure voltages that might exceed the indicated category values.

 When a measuring range is unknown, always select the highest possible range

and lower to the appropriate range.

 Disconnect the test leads from the tested circuit before rotating the range selector

in order to change functions.

 When carrying out measurements on a TV set or switching power circuits, always

remember that high amplitude voltage pulses at the test points might damage the

meter.

 Always be careful when working with voltages above 60Vdc or 30Vac rms. Keep

your fingers behind the probe barriers at all times during measurement.

 Do not measure current in circuits with voltages > 1000V.

 Never perform resistance, diode or continuity measurements on live circuits. Make

sure all capacitors in the circuit are depleted.

7.1 Voltage measurements

Do not measure circuits where voltages > 600V CAT IV or > 1000V

CAT III may reside.

Always be careful when working with voltages above 60Vdc or 30Vac rms.

Keep your fingers behind the probe barriers at all times during

measurement. Do not touch unused terminals when the meter is linked to a

circuit which is being tested.

 Connect the red test lead to the "VΩ Hz " jack and the black lead to the

"COM" jack.

 Set the rotary switch to V for DC measurements or to V for AC

measurements.

 Press the RANGE button to manually select the range.

 Connect the test probes to the source being measured.

 The measured value appears on the LCD display.

Notes:

 For DC-measurements, when a negative polarity is present at the red test lead,

the indicated value is preceded by a “-” sign.

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Velleman DVM4100 Manual

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