LAG-120A AUDIO GENERATOR GENERAL DES CRIPTION Uses The LAG-120A is a wideband audio generator with sine and square output waveforms. Sine wave signals are available with a distor of less than 0.4%. Square waves with fast rise time can be used for circuit performance Synchronizing the output frequency is accomplished checks.
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FREQ. R ANGE switches: For selection of the output frequency ranges: 100Hz 1000Hz (1kHz) x100 10kHz 100kHz x10k veforms. Sine x100k 1000kHz (lMHz) rise time c a n Frequency dial: Marked in Hz: to 10; actual output frequency depends on the setting of accomplished the FREQ.
� sh01 maximum req - red. ey e. he in Sin e Fig. Rear panel functions. Cs e In m OPERATION PO ,,£ Preliminary Notes The generator output impedance is 600n, and may be directly connected to loads of 600n higher impedances.
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Frequency Response The frequency response of amplifier is determined applying a constant voltage to the amplifier input. This voltage is chosen so that the amplifier is operated below the overload point. Set the reference frequency 1kHz or 400Hz, and set ATTENUATION and VARI- ABLE for suitable amplifier output.
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Amplifier Response avesha pe Condition RECTANGULAR SATISFACTORY FLAT LOW PRIMARY INDUCTANCE INOUTPUT TRANSFORMER: INCORRECT VALUES OF THE DEFICIE. COUPLING ELEMENTS T LOW FREQUENCIES ROUNDING HIGH LEAKAGE INDUCTANCE � OUTPUT TRANSFORMER OR HIGH DISTRIBUTED CAPACITANCE IN CIRCUIT DEFICIE T HIGH FREQUENCIES GING MALADJUSTMENT IN THE EGATIVE FEEDBACK...
signal of exactly 1000Hz is applied, the oscillator will automatically lock in at 1000Hz. Thus, high accuracy can be achie v ed with the use of a precision frequency standard. In another application, a distorted waveform can be "purified", or filtered, by passing it through the oscillator.
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Fig. 3 - 3 Square wave adjustmen t. Frequency Adjustment: Connect a frequency counter the OUTPUT terminals. 1. Set the FREQ. RANGE switch x1k, and the dial at "I" Set the waveform switch at sine. 2. The counter reading should be 1000Hz within ±3% (or between 9 7 0 and 1030Hz). If considerably off, then set the dial so that the counter reads 1000Hz.
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