Setting The Frequency - 3B SCIENTIFIC PHYSICS FG100 Instructions D'utilisation

2. Description
The FG100 function generator features an external
sweep function with a power amplifier for use in stu-
dent and practical experiments on simple harmonic
oscillation, alternating current and induction.
The equipment outputs sine-wave, triangular wave and
square wave voltages with adjustable amplitude and
frequency. The built-in power amplifier allows it to
handle currents of up to 1 A.
Operating modes for sweep mode:
External mode: the sweep is proportional to the set fre-
quencies and depends directly on an external control volt-
age of between 0 and 5 V. This allows for frequency modu-
lation using modulation frequencies of up to 200 Hz.
Internal/Continuous: At the start and whenever the
voltage passes through zero a 5-V pulse is output from
the TRIG OUT socket. A voltage of 0 - 5 V directly propor-
tional to the sweep voltage is output from the Control
Voltage socket.
Internal/Single: At the start a 5-V pulse is output from
the TRIG OUT socket. The sweep can also be initiated by
a 5-V pulse to the TRIG IN socket. A voltage of 0 - 5 V
directly proportional to the sweep voltage is output
from the Control Voltage socket. The sweep stops after
one run-through and continues at the starting frequency
until another start pulse is input (using the buttons or
the trigger).
The most recently used sweep-mode settings will be
stored in the function generator for the next time it is
switched on.
The output is protected against shorts circuits, inductive
voltages and spark discharges.
The device is equipped with fold-away feet.
Power is provided via a 12-V AC plug-in power supply.
The FG100 function generator with order number
1009956 is intended for a mains voltage of 115 V (±10%),
whereas the one numbered 1009957 is for 230 V (±10%).
3. Technical data
Signals:
Frequency range:
Distortion factor:
Signal forms:
Offset:
Output:
Output amplitude:
Power output:
Output current:
0.001 Hz to 100 kHz
<1 %
Sine, square, triangular
0 to ±5 V, adjustable in 0.1 V
steps
0 to 10 V, continuously ad-
justable
10 W, permanent
1 A, 2.0 A max.
Sweep:
Sweep modes:
Frequency range:
Stop/start
frequency ratio:
Time range:
External sweep:
Internal sweep:
General data:
Power supply:
Dimensions:
Weight:
4.1 Turning on
•
Plug the power supply into the mains and connect it
to the function generator.
This immediately turns on the equipment so that it is
ready to use. The top line of the display will indicate the
current frequency while the bottom line shows the DC
offset and the waveform.

4.2 Setting the frequency

•
Use the frequency knob to set the desired frequency.
•
Push in and turn the knob to select the digit to be
changed on the display and then turn the knob to
set the specific frequency.
The active digit will be indicated on the display by a
flashing underline character.
4.3 Setting the offset
•
Press the Offset button to activate offset adjustment.
•
Turn the frequency knob to set the required value in
steps of 0.1 V.
Pressing in the frequency knob resets the value back to zero.
•
When the desired value has been set, Press Offset again.
4.4 Selecting a waveform
•
Press the waveform button until the waveform you
want is indicated on the display.
It is possible to select a sine wave square wave or trian-
gular wave.
2
External, continuous internal,
individual internal
1 Hz to 100 kHz
Max. 1000:1, e.g. 2 Hz to 2 kHz
max.
0.04 s to 1000 s
Start via trigger pulse or ap-
plication of 0 to 5 V control
voltage; max. modulation fre-
quency: 200 Hz
Start and stop via Start/Stop
button; one trigger output per
cycle plus proportional volt-
age
Plug-in power supply, 12 V AC, 2 A
3
170x105x40 mm
0.5 kg
4. Operation