Programmed" Frequency Setting; Wobbulator (Sweep) - VOLTCRAFT FG 8210 Notice D'emploi

Never exceed the max. input values, neither at the VCF-input nor at the frequency counter input,
and avoid a short circuit at the generator outputs "TTL-SYNC" and "OUTPUT". Otherwise, there is
the danger of damage or even destruction of the frequency generator.
When the max. input values are exceeded or voltages above 50 V/AC or 75 V/DC are touched,
there is the danger of a potentially fatal electric shock.

8.6 "PROGRAMMED" FREQUENCY SETTING

At the generator, pre-selected control voltages of 0 to 10 V permit "programming" specific frequencies. The control
voltage is applied to the input "VCF IN". The setting at the frequency generator is limited to a minimum.
Only adjust the desired frequency range and set the adjustment buttons "FREQUENCY" (16 and 18) to the position
"MIN".
Apply a specific fixed direct voltage at the VCF input to receive the desired frequency at the generator output.
If several frequencies are needed within one frequency range, e.g. for test fields or quality assurance, different direct
voltages can be applied via a level switch at the VCF-input.
Never exceed the max. input values, neither at the VCF-input nor at the frequency counter input,
and avoid a short circuit at the generator outputs "TTL-SYNC" and "OUTPUT". Otherwise, there is
the danger of damage or even destruction of the frequency generator.
When the max. input values are exceeded or voltages above 50 V/AC or 75 V/DC are touched,
there is the danger of a potentially fatal electric shock.

8.7 WOBBULATOR (SWEEP)

The wobbulator permits linear frequency change at the signal output. The frequency range and the number of wob-
ble sequences can be set.
To use the frequency generator as wobbulator, proceed as follows:
• Use the function generator as described in chapter 8.1.
• Push the desired area switch in the field "FREQUENCY RANGE (Hz)" (13), which the wobbulator is to run
through.
• Set the frequency adjustment buttons (18 and 16) to the "MIN" position or the piston where the wobble process is
to be started (e.g. 100 Hz in the 1k-range).
• Pull the adjustment button "WIDTH" (14) until it latches; the wobble function is now active.
• The wobble speed (repeat rate) can be set via the adjustment button "RATE" (15).
• At the adjustment button "WIDTH" (14), the wobble bandwidth can be set within a selected frequency range.
• The display (2) shows a continuous change of the frequency. In case of quick wobble cycles, however, the display
may not be able to show the actual frequency progress. This is due to the fixed gate time of the counter that does
not change when the repeat rate (RATE) is set.
We recommend connecting an oscilloscope (if present) to monitor or review the settings.
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