A function generator is an instrument which produces a wide variety of wave forms whose frequencies are adjustable over a wide range. Typical function generators provides square,triangle, sine, ramp and pulse waveforms over a frequency range of 0.2Hz to 2MHz,and TTL Pulse output.

Controls and Indicators

1. POWER switch

    Power switch applies power to the function generator.

2. Power On indicator

    A light emitting diode (LED) is used to indicate when power is applied to the function generator.

3.Range switch

    Seven fixed decades of frequency are provided by the RANGE Pushbutton switch. Each of the seven pushbutton RANGE switches are interlocked. Depressing one button will release all others.

4.FUNCTION Switch

    Three interlocking pushbutton switches provide selection of the desired output waveform. Depressing one switch will release the switch previously depressed. Square, triangle,and Sine waveforms are provided, satisfying most applications.

5.MULTIPLIER

    The Multiplier is a variable potentiometer allowing frequency settings between fixed ranges.

6.DUTY CONTROL

   Time symmetry of the OUTPUT waveforms, as well as the TTL PULSE output , is controlled by the DUTY potentiometer. When this control is set to the CAL position, the time symmetry of the control output waveforms is 50/50 or approximately 100% symmetry.

7. RAMP/PULSE INVERT

    A pushbutton switch is provided to invert the time symmetry set the duty control.

8.DC OFFSET (PULL ADJ)

    A DC OFFSET control is provided to allow the DC level of the OUTPUT waveforms to be set as desired.

9.AMPLITUDE

    The AMPLITUDE control provides 20db of attenuation of the output waveform selected by the FUNCTION switch.

10.ATT

    When the switch is pushed, in addition to 20db provided by the amplitude control, a maximum of 40db of attenuation , at the output.

11.OUTPUT

    Square, triangle, sine, ramp and pulse waveforms are provided at up to 20v P-P amplitude (open circuit) at the OUTPUT. (When ATT attenuation pushbutton is pulled.)

12.VCF INPUT

    A VCF(Voltage-controlled frequency) input is provided for externally sweeping the frequency. Approximately +10V applied at the VCF input will sweep the generator frequency down three decades of 1000:1

13.PULSE OUTPUT

    The PULSE OUTPUT is a TTL output signal suitable for driving TTL logic.