User manual

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 


 


At the generator, pre-selected control voltages of 0 to 10 V permit “programming” specic 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 specic xed 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 elds or quality assurance, different direct
voltages can be applied via a level switch at the VCF-input.
 


 


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 eld “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 xed 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.