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3. Technical data
Output
Signal form:
Pulse length:
Amplitude:
General data
Voltage supply:
Dimensions:
Weight:
4. Operation
•
Insert the supplied battery.
•
Connect the desired sound source, e.g. a
loudspeaker, to the Kundt's tube E via its 4-
mm safety sockets, making sure you main-
tain the correct polarity.
•
Trigger an electrical pulse by pressing the
button. (Any number of pulses can be trig-
gered one after the other.)
Changing the battery
•
Prize open the battery compartment on the
back of the box with a flat object, e.g. a
screwdriver.
•
Replace the flat battery with a new one of
identical type. Close the battery compart-
ment again.
•
Properly dispose of the empty battery.
Fig. 1 Battery compartment
5. Example experiment
Determining the speed of sound in Kundt's
tube
Additionally required:
1 Microphone box (230 V, 50/60 Hz)
or
1 Microphone box (115 V, 50/60 Hz)
1 Microsecond counter (230 V, 50/60 Hz) 1017333
or
1 Microsecond counter (115 V, 50/60 Hz) 1017334
Square
30 ms @ 8 Ω
9 V
9 V battery
100x75x35 mm³ approx.
150 g incl. batteriy approx.
1014520
1014521
1 Kundt's tube E
1 Microphone probe, long
1 Microphone probe, short
2 Adapter cable, BNC/4-mm plugs
•
Place the microphone probes in the Kundt's
tube and set up the apparatus. (see Fig. 2)
•
Connect the long microphone probe to the
Channel A input of the microphone box and
connect the short one to the input for Chan-
nel B.
•
Use a BNC/4-mm adapter cable to connect
the output of Channel A to the Start input of
the microsecond counter (plug red 4-mm
plug into green socket, black 4-mm plug into
black ground socket).
•
Connect the output of Channel B to the Stop
input of the microsecond counter (plug red
4-mm plug into red socket, black 4-mm plug
into black ground socket from the side).
•
Connect the pulse box to the speaker.
•
Set both outputs to trigger mode and set the
gain for both channels to a medium value.
•
Connect the microsecond counter and mi-
crophone box to their power supplies and
plug them into the mains.
•
Trigger a click pulse from the pulse box and
read off from the counter the time it takes for
the sound to propagate from the long micro-
phone probe to the short one.
Use the distance between the two microphones
and the time measured to calculate the speed of
sound in the tube at room temperature.
6. Storage, cleaning and disposal
•
Keep the equipment in a clean, dry and
dust-free place.
•
Do not clean the unit with volatile solvents or
abrasive cleaners.
•
Use a soft, damp cloth to clean it.
•
The packaging should be disposed of at
local recycling points.
•
Should you need to
dispose of the equip-
ment itself, never throw
it away in normal do-
mestic
waste.
regulations for the dis-
posal
of
equipment will apply.
•
Do not dispose of the battery in the regular
household garbage. Follow the local regula-
tions (In Germany: BattG; EU: 2006/66/EG).
2
1017339
1017342
4008308
1002748
Local
electrical
Publicité
