3
5. Technical data
Power supply:
max. 12 V AC, 3 A via 4-mm safety sockets
Constant current source for sample current:
Current:
0 to ±34 mA, tol.: ±1 mA
Display precision:
±2.5 %
Display resolution:
0.1 mA
Measurement output:
I
P
=
U
meas * 0.1 A/V
Hall voltage and compensation:
Display:
0 to ±199.9 mV
Display precision:
±2.5%
Display resolution:
0.1 mV
Compensation:
±10 mV, tol.: +5 mV
Measurement output:
U
H
=
U
meas * 0.1
Sample voltage:
Display:
0 to ±1.999 V
Display precision:
±2.5%
Display resolution:
1 mV
Measurement output:
U
P
=
U
meas
Sample temperature:
Range:
T
0
to 170°C, tol.: ±3°C
Display precision:
±2%
Display resolution:
0.1 °C
Measurement output:
T
(°C) =
U
meas * 100/V
Attachment for circuit boards:
Connector: Multi-pin
socket
Outputs:
Hall voltage:
4-mm safety sockets
Voltage drop across
germanium crystal:
4-mm safety sockets
Voltage equivalents:
4-mm safety sockets
8-pin mini-DIN sockets
(for 3B NET
log
TM
)
General data:
Dimensions:
180x110x50 mm approx.
Weight:
0.5 kg approx.
6. Operation
6.1 Experiment set-up for uniform magnetic field
and attachment of circuit boards
The following equipment is necessary to set up a
uniform magnetic field:
1 P-doped germanium on circuit board 1009810
or
1 N-doped germanium on circuit board 1009760
or
1 Undoped germanium on circuit board 1008522
1 U-shaped core
1000979
1 Pair of pole pieces for Hall effect plus clamps
1009935
2 Coils, 600 windings
1000988
1 Magnetic field sensor, ±2000 mT
1009941
•
Place the U-shaped core on a stable, level sur-
face.
•
Place coils over the core in such a way that their
connectors are facing the front.
•
Insert the U-shaped holder all the way into the
hole in the U-shaped core and secure it in place
with the knurled screw.
•
Place the pole pieces on the legs of the core and
secure them in place with clamps (see Fig. 4).
Fig. 4 Set-up on U-shaped core with coils, pole pieces and
U-shaped holder
•
Insert the circuit board into the attachment on
the console until the contact pins slot into the
multi-pin socket. Make sure the circuit board is
correctly aligned (see Fig. 5).
•
Insert the console with the circuit board at-
tached onto the U-shaped holder. Make sure the
board is held parallel with the U-shaped core.
You may need to turn the U-shaped holder
slightly (see Fig. 6).
•
Insert the magnetic field sensor into the corre-
sponding attachment on the console.
•
Undo the clamps and move the pole pieces as
far as the spacers on the circuit board (make
sure the board does not get warped) (see Fig.
7/8).
Fig. 5 Insertion of circuit board
