Description Of The Control Elements - Conrad M-4660M Bedienungsanleitung

• Take special care when working with voltage above 25 V (AC) and
above 35 V (DC). Even such voltage might cause a life-dangerous elec-
trical shock when electrical conductors are touched.
First switch off voltage source, connect the measuring unit with the
terminals of the voltage source to be measured, set the measuring unit
to the necessary voltage range and afterwards switch on voltage source.
After measurement has been finished, switch off the voltage source
and remove the measuring cables from the terminals of the voltage
source.
• Make sure before each voltage measurement the unit is not set to the
amperage range.
• Before changing the measuring range remove the probe tips from the
object to be measured.
• Control before each measurement the measuring unit and your test
leads to make sure they are not damaged.
• To avoid an electrical shock, don't touch directly or indirectly the test
probes and the test points during measurement.
• Do not use this measuring unit in environments or rooms with adverse
environmental conditions where combustible gases, vapors or dusts
exist or may exist. For your own safety avoid under all circumstances
that the measuring unit or the test leads become damp or wet.
Avoid the usage near
a) strong magnetic fields (loudspeakers, magnets)
b) electromagnetic fields (transformers, motors, coils, relays, contactors,
electromagnets etc. )
c) electrostatic fields (charge/discharge).
d) transmission antennas or hf-generators
• Do not use the Multimeter shortly before, during, or shortly following
a storm (lightning!/high-energy overvoltages!). Make absolutely sure
that your hands, shoes, clothes, floor, measuring device/connecting
cables, switches and switch components, etc. are dry.
6
• If there are doubts whether a risk-free use is still possible the unit has
to be put out of operation and be secured against unintentional use.
It must be assumed that a risk-free operation is no longer possible if
- the unit shows visible damage
- the unit does not work and
- longterm storage under adverse conditions or
- stress during transport took place
• Don't switch on the measuring unit immediately after transferring it
from a cold to warm room. Condensed water might impair or destroy
your unit. Give the unit time to warm up to room temperature before
you switch it on.

3. Description of the Control Elements

Picture 1 ( page 140 )
1. Power ON/OFF (see also 4.3.2)
With this push-button the measuring unit is turned on and off. A
short time after turning the unit on it is ready for operation.
2. Push button "FUNC" for special function (see 4.3.2 and 4.3.4)
3. Push button "SET/R"
To set/reset the special functions.
4. Push button "UP" additional button to set the special functions (see
4.3.2 and 4.3.4)
5. Push button "DOWN" additional button to set the special functions
(see 4.3.2 and 4.3.4)
6. Terminal block for measuring capacitance (capacitors) and inductance
(coils = L)
7. Transistor Socket
This socket is for testing the hfe-parameter of low power transistors.
7