Function Generator


Overview:

Function generator is a piece of electronic test equipment used to generate repetitive waveforms. These waveforms can then be injected into a device under test and analyzed as they progress through the device, confirming the proper operation of the device or pinpointing a fault in the device. Function generators usually generate a triangle waveform as their basic output. The triangle is generated by repeatedly charging and discharging a capacitor from a constant current source. This produces a linearly-ascending or descending voltage ramp. As the output voltage reaches upper and lower limits, the charging and discharging is reversed, producing the linear triangle wave. By varying the current and the size of the capacitor, different frequencies may be obtained. A 50% duty cycle square wave is easily obtained by noting whether the capacitor is being charged or discharged. Most function generators also contain a diode shaping circuit that can convert the triangle wave into a reasonably-accurate sine wave. Function generators, like most signal generators, may also contain an attenuator, various means of modulating the output waveform, and often contain the ability to automatically and repetitively "sweep" the frequency of the output waveform between two operator-determined limits. This capability makes it very easy to evaluate the frequency response of a given electronic circuit.

Important function generator products:

Manufacturer Model Condition Description Specs
Agilent 8904A 3rd party pre-owned 0 Hz to 600 kHz Multifunction Synthesizer 8904A
Agilent 8170A 3rd party pre-owned Not-on-file(other-mfr) 8170A
Agilent 3326A 3rd party pre-owned 0Hz - 13MHz, Two-Channel Synthesizer 3326A
Agilent 3325B 3rd party pre-owned 1 mHz to 21 MHz Function Generator 3325B
Agilent 33250A 3rd party pre-owned 80 MHz Function/Arbitrary Waveform Generator 33250A
Agilent 3324A 3rd party pre-owned 1 mHz to 21 MHz, Function Generator 3324A
Agilent 33220A 3rd party pre-owned 20 MHz Function/Arbitrary Waveform Generator 33220A
Agilent 33220A 3rd party pre-owned Function/Arbitrary Waveform Generator, 20 MHz 33220A
Agilent 3314A 3rd party pre-owned 1mHz - 20MHz, Mulit-Waveform Generator 3314A
Agilent 3314A 3rd party pre-owned 1mHz - 20MHz, Mulit-Waveform Generator 3314A
Agilent 3314A 3rd party pre-owned 1mHz - 20MHz, Mulit-Waveform Generator 3314A
Agilent 33120A 3rd party pre-owned 15 MHz function/arbitrary waveform generator 33120A
Agilent Technologies 33250A 3rd party pre-owned Function/Arbitrary Waveform Generator, 80 MHz 33250A
Agilent Technologies Inc. 3326A 3rd party pre-owned 0Hz - 13MHz, Two-Channel Synthesizer 3326A
Agilent Technologies Inc. 3314A 3rd party pre-owned 1mHz - 20MHz, Mulit-Waveform Generator 3314A
Dymedix Corporation 2001 3rd party pre-owned Not-on-file(other-mfr) 2001
Fluke PM 5139 3rd party pre-owned Not-on-file(other-mfr) PM 5139
Fluke Precision (Fluke) PM5193M 3rd party pre-owned 0.1mHz -50.0MHz, Synthesized Function Generation PM5193M
Fluke Precision (Fluke) PM5150 3rd party pre-owned 20 MS/s Arbitrary Waveform Generator PM5150
Fluke Precision (Fluke) PM5150 3rd party pre-owned 20 MS/s Arbitrary Waveform Generator PM5150
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Function Generators by different manufacturers: