3B SCIENTIFIC PHYSICS E 1018832 Bedienungsanleitung Seite 10

5. Description
Digital multimeter E is a robust, battery operated
multimeter with a 3½-digit LCD display for
measuring voltage, current and resistance as
well as for diode and hFE gain testing.
All measurement ranges are selected by means
of a rotary dial. All measurement ranges are
protected against overload.
The meter is equipped with a hold function,
negative polarity indication, over range indica-
tion and low battery indication.
On the backside there is a fold out prop for
standing the device on a table.
6. Operation
Note: The multimeter switches into an indeter-
minate state if the Hold button is activated (Hold
function button (8) pressed). After it is switched
on, the display will then show "1.666" (where the
position of the decimal point is dependent on the
selected measuring range). If this case should
arise, deactivate the Hold function while the
equipment is switched on (deactivate Hold func-
tion by pressing the button one more time).
6.1 Method of measurement
Warning! Dangerous voltages may
be present at the input terminals and
may not be displayed.
6.1.1 Voltage measurement

Set the measurement range dial at the re-
quired position

Connect the black test lead to the meas-
urement socket "COM" and the red test lead
to the "V" socket. The meter is connected
parallel to the measuring point. The polarity
of the red lead connection will be indicated
at the same time as the voltage when mak-
ing a DC measurement.
Note

lf the voltage to be tested is unknown be-
forehand, set the measurement range dial to
the highest range and work down.

When only the figure "1" is displayed, over
range is being indicated and the measure-
ment range dial has be set to a higher
range.

Never measure voltages higher than 600 V.
6.1.2 Current measurement

Set the measurement range dial at the re-
quired position

Connect the black test lead to the meas-
urement socket "COM" and the red test lead
to the " A/Ω/hFE" socket for measurements
up to 2 A. For measurements over 2 A con-
nect it to the socket "10 A". The meter is
connected in series to the measuring object.
The polarity of the red lead connection will
or .
or .
be indicated at the same time as the current
when making a DC measurement.
Note

lf the current to be tested is unknown be-
forehand, set the measurement range dial to
the highest range and work down.

When only the figure "1" is displayed, over
range is being indicated and the measure-
ment range dial has be set to a higher
range.

Limit measurements in the 10-A range to
max. 10 s.
6.1.3 Resistance measurement
Warning! To avoid electrical shock
or damage to the meter when meas-
uring resistance in a circuit, make
sure the power to the circuit is
turned off and all capacitors are
discharged.
Set the measurement range dial to the Ω

range.

Connect the black test lead to the meas-
urement socket "COM" and the red test lead
to the " A/Ω/hFE" socket. Measurement is
done parallel to the resistor
Note

lf the resistance to be tested is unknown
beforehand, set the measurement range dial
to the highest range and work down.

When only the figure "1" is displayed, over
range is being indicated and the measure-
ment range dial has be set to a higher
range.
When the input is not connected, i.e. at open
circuit, the figure "1" will be displayed for the
over range condition.
6.1.4 Diode test

Set the measurement range dial to

Connect the black test lead to the meas-
urement socket "COM" and to the cathode of
the diode. Connect the red test lead to the "
A/Ω/hFE" socket and the anode of the diode.
Note: The meter displays the forward voltage
drop and displays figure "1" for overload when
the diode is reversed.
6.1.5 Continuity test
Warning! To avoid electrical shock
or damage to the meter when meas-
uring continuity in a circuit, make
sure the power to the circuit is
turned off and all capacitors are
discharged.

Set the measurement range dial to

Connect the black test lead to the meas-
urement socket "COM" and the red test lead
to the " A/Ω/hFE" socket.
A built-In buzzer sounds if the resistance is less
than 30 ± 10 Ω.
4
.
.