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Function Generator


Analog function generators usually generate a triangle waveform as the basis for all of its other outputs. 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 using a comparator, 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, which is reflected in the current switching comparator's output. Most function generators also contain a non-linear diode shaping circuit that can convert the triangle wave into a reasonably accurate sine wave. It does so by rounding off the hard corners of the triangle wave in a process similar to clipping in audio systems.

Function generators, like most signal generators, may also contain an attenuator, various means of modulating the output waveform, and often the ability to automatically and repetitively "sweep" the frequency of the output waveform (by means of a voltage-controlled oscillator) between two operator-determined limits. This capability makes it very easy to evaluate the frequency response of a given electronic circuit.

Some function generators can also generate white or pink noise.

More advanced function generators use Direct Digital Synthesis (DDS) to generate waveforms. Arbitrary waveform generators use DDS to generate any waveform that can be described by a table of amplitude values.

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Signal Generator By Type

 Arbitrary Waveform Generator
 Audio Generator
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Signal Generator By Manufacturer

 Agilent Function Generator
 Tektronix Function Generator
 Fluke Function Generator
 Keithley Function Generator
 Rohde & Schwarz Function Generator
 B&K Precision Function Generator
 Instek Function Generator
 Hioki Function Generator
 Aim-TTi Function Generator

All Function Generator Products

 Agilent
- Function/Arbitrary Waveform Generator Selection Guide Agilent Function/Arbitrary Waveform Generators  New
33210A Function/Arbitrary Waveform Generator 1 mHz to 10 MHz  New - Priced from $1,321
33220A Function/Arbitrary Waveform Generator 1 µHz to 20 MHz  New - Priced from $2,487
33250A Function/Arbitrary Waveform Generator 1 µHz to 80 MHz  New - Priced from $4,953
33500B Series Function/Arbitrary Waveform Generators Up to 30 MHz, 250 MSa/s, 16-bit, Trueform Technology  New - Priced from $1,707
33502A High Voltage Amplifier Dual-channel, 50 Vpp at 100 kHz, 300 kHz BW  New - Priced from $2,812
33503A BenchLink Waveform Builder Pro For 33200, 33500, 33600A, 81100 Series waveform generators  New - Priced from $766
33509B Function/Waveform Generator 20 MHz sine, 16 bit, 1-channel  New - Priced from $1,707
33510B Function/Waveform Generator 20 MHz sine, 16 bit, 2-channels  New - Priced from $2,607
33511B Function/Arbitrary Waveform Generator 20 MHz sine, 250MSa/s ARB, 16 bit, 1-channel  New - Priced from $2,017
33512B Function/Arbitrary Waveform Generator 20 MHz sine, 250MSa/s ARB, 16 bit, 2-channels  New - Priced from $3,052
33519B Function/Waveform Generator 30 MHz sine, 16 bit, 1-channel  New - Priced from $1,914
33520B Function/Waveform Generator 30 MHz sine, 16 bit, 2-channels  New - Priced from $2,922
33521A, 33522A Function/Arbitrary Waveform Generator Up to 30 MHz, 250 MSa/s, 16-bit sampling rate  Used
33521B Function/Arbitrary Waveform Generator 30 MHz sine, 250MSa/s ARB, 16 bit, 1-channel  New - Priced from $2,224
33522B Function/Arbitrary Waveform Generator 30 MHz sine, 250MSa/s ARB, 16 bit, 2-channels  New - Priced from $3,362
81150A Pulse Function Arbitrary Noise Generator 1 μHz to 240 MHz, 14-bit 2 GSa/s Arb  New - Priced from $11,435
81160A Pulse Function Arbitrary Noise Generator 330 MHz / 500 MHz  New - Priced from $19,046
U2761A USB Modular Function/Arb Generator Up to 20 MHz, 14-Bit, 50 MSa/s, 64 K  New - Priced from $1,860
 Tektronix
AFG2021 Arbitrary/Function Generator 1-Channel, 250MS/s, 20MHz, 14bit  New - Priced from $1,590
AFG3000C Series Arbitrary/Function Generators Up to 240 MHz, 2 Channels  New - Priced from $1,890
AFG3011 AFG3021B AFG3022B AFG3101 AFG3102 AFG3251 AFG3252 Arbitrary/Function Generators Up to 240 MHz, 2 Channels  Used - Priced from $2,995
AFG3011C Arbitrary/Function Generator 10 MHz, 1 Channel  New - Priced from $4,220
AFG3021C Arbitrary/Function Generator 25 MHz, 1 Channel  New - Priced from $1,890
AFG3022C Arbitrary/Function Generator 25 MHz, 2 Channels  New - Priced from $2,790
AFG3051C Arbitrary/Function Generator 50 MHz, 1 Channel  New - Priced from $2,470
AFG3052C Arbitrary/Function Generator 50 MHz, 2 Channels  New - Priced from $3,650
AFG3101C Arbitrary/Function Generator 100 MHz, 1 Channel  New - Priced from $4,290
AFG3102C Arbitrary/Function Generator 100 MHz, 2 Channels  New - Priced from $6,090
AFG3251C Arbitrary/Function Generator 240 MHz, 1 Channel  New - Priced from $8,660
AFG3252C Arbitrary/Function Generator 240 MHz, 2 Channels  New - Priced from $11,900
TekSelect Factory Reconditioned Instruments Updated Daily!  Used
 Fluke
281, 282, 284 Arbitrary Waveform Generator 1 to 4 channels, 40 MS/s  New - Priced from $2,455
291, 292, 294 Arbitrary Waveform Generator 1 to 4 channels, 100 MS/s  New - Priced from $4,065
 Keithley
3390 Arbitrary Waveform/Function Generator 1μHz to 50 MHz  New - Priced from $1,740
 Rohde & Schwarz
AM300 Arbitrary / Function Generator DC to 50 MHz, 2 Channels  Used - Priced from $2,995
 B&K Precision
- Function & Arbitrary Waveform Generator Selection Guide B&K's Complete Selection of Function Generators  New
3003 Wave Generator 10MHz, Handheld, Sine & Square Wave  New - Priced from $215
4001A Sweep Function Generator 4 MHz, w/Dial  New - Priced from $210
4003A Sweep Function Generator 4 MHz, Built-in Frequency Counter  New - Priced from $279
4005DDS Function Generator 1 Hz to 5 MHz, DDS  New - Priced from $309
4007B DDS Sweep Function Generator Sine/Square to 7 MHz, 5-Digit display  New - Priced from $375
4007DDS Sweep Function Generator 0.1 Hz to 7 MHz  Used
4010A Function Generator 0.2 Hz to 2 MHz  New - Priced from $269
4011A Function Generator 0.5 Hz to 5 MHz, Digital Display  New - Priced from $355
4012A Function Generator 0.5 Hz to 5 MHz  New - Priced from $395
4013B Function Generator Sine/Square to 12 MHz, 5-Digit display  New - Priced from $425
4013DDS Function Generator 0.1 Hz to 12 MHz  Used
4014B DDS Function Generator 12 MHz, DDS, AM/FM  New - Priced from $475
4017A Function Generator 0.1 Hz to 10 MHz  New - Priced from $439
4040A Function Generator 0.2 Hz to 20 MHz  New - Priced from $669
4040B DDS Function Generator 20 MHz, DDS, AM/FM  New - Priced from $550
4040DDS Function Generator 0.1 Hz to 20 MHz  Used
4045 Sweep Function Generator with Arb Function 20 MHz, 12-bit, 1k points  Used
4045B Arbitrary Function Generator 20 MHz, 12-bit, 1k points  New - Priced from $750
4051 Multi-Function Generator 20MHz Sweep Generator, 80W Power Supply  Used
4052 Dual Channel Function/Arbitrary Waveform Generator 5 MHz, 14-bit, 125 MSa/s, 16k point  New - Priced from $499
4052, 4053, 4054, 4055, 4050 Series Function/Arbitrary Waveform Generators Up to 50 MHz, 14-bit, 125 MSa/s, 16k point  New - Priced from $499
4053 Dual Channel Function/Arbitrary Waveform Generator 10 MHz, 14-bit, 125 MSa/s, 16k point  New - Priced from $599
4054 Dual Channel Function/Arbitrary Waveform Generator 25 MHz, 14-bit, 125 MSa/s, 16k point  New - Priced from $850
4055 Dual Channel Function/Arbitrary Waveform Generator 50 MHz, 14-bit, 125 MSa/s, 16k point  New - Priced from $1,050
4075 Arbitrary Waveform / Function Generator 25 MHz, 14-bit, 100 MSa/s, 400 k point, 1 Channel  New - Priced from $1,150
4075, 4076, 4078, 4079 Arbitrary Waveform / Function Generators 14-bit, 100/125 MSa/s, 1- and 2- Channels  New - Priced from $1,495
4076 Arbitrary Waveform / Function Generator 50 MHz, 14-bit, 125 MSa/s, 4 M point, 1 Channel  New - Priced from $1,595
4078 Arbitrary Waveform / Function Generator 25 MHz, 14-bit, 100 MSa/s, 400 k point, 2 Channels  New - Priced from $2,350
4079 Arbitrary Waveform / Function Generator 50 MHz, 14-bit, 125 MSa/s, 4 M point, 2 Channels  New - Priced from $2,995
4084 Function Generator 1 µ Hz to 20 MHz, Programmable  New - Priced from $925
4084AWG Arbitrary/Function Generator 20 MHz, 200 MSa/s Sampling rate  New - Priced from $1,295
4085 Function Generator 1 µHz to 40 MHz, Programmable, DDS  New - Priced from $1,150
4086 Function Generator 1µHz to 80MHz, programmable, DDS  New - Priced from $1,375
4086AWG Arbitrary/Function Generator 80 MHz, 10-bit, 200 MSa/s, 16 k point, 1 Channel  New - Priced from $1,895
4087 Function Generator 1 µHz to 120 MHz, Programmable, DDS  New - Priced from $1,650
WaveXpress Waveform Editing Software Free Download  New
 Instek
AFG-2000, AFG-2100 Series Arbitrary Function Generators 0.1 Hz to 5/12/25 MHz, 20 MSa/s  New - Priced from $295
AFG-2005 Arbitrary Function Generator 5 MHz, 20 MSa/s  New - Priced from $295
AFG-2012 Arbitrary Function Generator 12 MHz, 20 MSa/s  New - Priced from $400
AFG-2025 Arbitrary Function Generator 25 MHz, 20 MSa/s  New - Priced from $480
AFG-2105 Arbitrary Function Generator 5 MHz, 20 MSa/s, w/Ext. counter, sweep, AM/FM  New - Priced from $385
AFG-2112 Arbitrary Function Generator 12 MHz, 20 MSa/s, w/Ext. counter, sweep, AM/FM  New - Priced from $470
AFG-2125 Arbitrary Function Generator 25 MHz, 20 MSa/s, w/Ext. counter, sweep, AM/FM  New - Priced from $510
AFG-2225 Arbitrary Waveform Generator 25 MHz, 120MSa/s, 2-Channels, 3.5" TFT-LCD Display  New - Priced from $549
AFG-3051 Arbitrary Function Generator 50 MHz, 200 MSa/s, 16-bit, 1M Memory  New - Priced from $1,800
AFG-3081 Arbitrary Function Generator 80 MHz, 200 MSa/s, 16-bit, 1M Memory  New - Priced from $2,700
GFG-8020H Function Generator 0.2 Hz to 2 MHz, internal counter display  New - Priced from $215
GFG-8210 Function Generator 0.1 Hz to 10 MHz, 150 MHz counter  Used
GFG-8215A, GFG-8216A Function Generators 0.3 Hz to 3 MHz, 150 MHz counter (8216A)  New - Priced from $185
GFG-8219A Function Generator 0.1 Hz to 3 MHz, 150 MHz counter, sweep  New - Priced from $325
GFG-8250A, GFG-8255A Function Generators 0.5 Hz to 5 MHz, 150 MHz counter, sweep (8255A)  New - Priced from $280
SFG-2000 Series Function Generators Up to 20 MHz, Direct Digital Synthesis  New
 Aim-TTi
TG1006 Function Generator 10 MHz, DDS, with 120 MHz Counter  New - Priced from $529