3B Scientific Power Function Generator (115 V, 50__60 Hz) User Manual
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Elwe Didactic GmbH • Steinfelsstr. 6 • 08248 Klingenthal • Germany •
www.elwedidactic.com
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany •
www.3bscientific.com
Subject to technical amendments
© Copyright 2008 3B Scientific GmbH
4. Operation
4.1 Generator mode
•
Turn on the mains via the mains switch (7).
•
Select the waveform using the selector (1).
•
Set the offset switch (12) and attenuator (11) to
the ratcheted setting.
•
Set frequency using controls (15 and 18).
•
Set amplitude using rotary knob (17).
•
Use toggle (6) to select current or voltage source
operating mode for power amplification. The
output signal from the power amp should al-
ways be referenced to socket (8).
•
Set offset if required.
•
For AM modulation set toggle (5) to AM setting.
•
Apply 0 - 5 V control voltage to socket (4) and
set the amplitude limits using the attenuator
(11).
•
For FM modulation set toggle (5) to FM setting.
•
Apply 0 - 5 V control voltage to socket (4) and
set the frequency limits using the attenuator
(11).
4.2 Power amp with external signal
•
Apply a 0 - 1 V signal to LF (NF) socket (2)
•
Set the selector (1) to LF (NF).
•
Use rotary knob (17) to set amplitude.
For excessively large input signals LED (16) will indi-
cate an "Overload".
4.3 Power amp as voltage or current source
•
Turn knob (17) fully to the left.
•
Set attenuator (11) to INT.GEN. (it will click).
Selector (1) must not be set to LF (NF).
•
Use the offset trimmer (12) and amplitude knob
(17) to set the output voltage or current.
4.4 Miscellaneous
In "voltage source" mode, the timing or wave form
of the voltage output matches the input voltage for
currents up to 5 A.
In "Current source" mode, the timing or waveform
of the voltage output matches the input voltage up
to a maximum load resistance of 6
Ω.
The NF socket stands for low frequency (LF)