Function Generators

A function generator is a versatile signal source that injects controlled electrical waveforms into a device under test. While an oscilloscope detects the signal, the function generator generates it, allowing engineers to simulate various inputs and observe how a circuit responds.

Why Choose a Function Generator?

Precise Waveform Control: Unlike a simple power supply, these units can produce a variety of periodic waveforms—such as sine, square, triangle, and sawtooth—with digital precision over frequency and amplitude.

Arbitrary Waveform Generation (AWG): Many modern digital models allow you to "draw" or upload custom, complex waveforms to simulate real-world sensor data or erratic signals that a standard sine wave cannot replicate.

Modulation Capabilities: They can apply AM (Amplitude), FM (Frequency), or PM (Phase) modulation to a signal, which is essential for testing communication equipment and radio receivers.

Frequency Sweeping: Most units can automatically "sweep" through a range of frequencies, which is vital for characterising the frequency response of filters, amplifiers, and speakers.

Core Applications

Circuit Characterisation: Injecting a known signal into an amplifier or filter to measure its gain, bandwidth, and distortion levels across different frequencies.

Sensor Simulation: Mimicking the output of automotive sensors (like crankshaft or ABS sensors) or medical transducers to test control modules without needing the actual hardware.

Clock Signal Generation: Providing a stable square-wave "heartbeat" to digital circuits and microcontrollers to verify timing margins and logic switching.

Educational Demonstrations: Visualising the fundamental concepts of electronics, such as resonance in LC circuits or the effects of clipping and saturation in power stages.

Series	Manufacturer	Channel Range	Max. Frequency	Sample Rate(s)	Amplitude (Vpp Max.)	Basic Accuracy	Built-in Waveforms	Max Arb Waveform Length	Series Modulation	Built-In Counter	Stock Status	Price From
DG6000 Series	Rigol	2, 4	1GHz	2.5GSa/s	10 Vpp	±1 ppm	512 Types of Waveform	256Mpts (512Mpts Opt.)	AM, FM, PM, SUM, ASK, FSK, PSK, PWM	-	On Backorder	£6,782.00
DG1000Z	Rigol	2	25MHz, 30MHz, 60MHz	200MSa/s	10 Vpp	±1 ppm	160 Types of Waveform	2Mpts, 8Mpts (16Mpts Opt.)	AM, FM, PM, ASK, FSK, PSK, PWM	7 digits/s up to 200MHz	In Stock	£233.10
DG4000	Rigol	2	60MHz, 100MHz, 160MHz, 200MHz	500MSa/s	10 Vpp	±2 ppm	150 Types of Waveform	16kpts	AM, FM, PM, ASK, FSK, PSK, BPSK, QPSK, 3FSK, 4FSK, OSK, PWM	7 digits/s up to 200MHz	In Stock	£708.00
DG5000 Pro	Rigol	2/4/8	250MHz, 350MHz, 500MHz	2.5GSa/s	10 Vpp	±1 ppm	512 Types of Waveform	128 Mpts	AM, FM, PM, ASK, FSK, PSK, PWM, SUM	-	In Stock	£1,263.00
DG70000 Series	Rigol	4/2	5GHz	5GSa/s	0.7 Vpp	±1 ppm	N/A	N/A	N/A	N/A	On Backorder	£43,152.00
DG800 Pro	Rigol	1/2	25MHz, 50MHz	625MSa/s	10 Vpp (20 Vpp HighZ)	±1 ppm	148 Types of Waveform	2Mpts (8Mpts Opt.)	AM, FM, PM, ASK, FSK, PSK, PWM, SUM, Sweep, Burst, Sequence	7 digits/s up to 250MHz, 6 digits/s up to 500MHz	In Stock	£75.00
DG900 Pro	Rigol	2	50MHz, 70MHz, 100MHz	250MSa/s	10 Vpp	±1 ppm	148 Types of Waveform	16Mpts (32Mpts Opt.)	AM, FM, PM, ASK, FSK, PSK, PWM, SUM, Sweep, Burst, Sequence	7 digits/s up to 250MHz, 6 digits/s up to 500MHz, 5 digits/s up to 1GHz	In Stock	£552.00
SDG1000X Plus	Siglent	2	25MHz, 30MHz, 60MHz	1GSa/s	20 Vpp	±1 ppm	196	8Mpts	AM, DSB-AM, FM, PM, ASK, FSK, PSK, PWM	Up to 200MHz	In Stock	£275.00
SDG2000X	Siglent	2	40MHz, 80MHz, 120MHz	1.2GSa/s	20 Vpp	±1 ppm	196 Types of Waveform	8Mpts	AM, DSB-AM, FM, PM, ASK, FSK, PSK, PWM	Up to 200MHz	In Stock	£400.00
SDG3000X	Siglent	2	80MHz, 160MHz, 200MHz	1.2GSa/s	20 Vpp	±1 ppm	196 Types of Waveform	20Mpts	AM, DSB-AM, FM, PM, ASK, FSK, PSK, PWM	Up to 200MHz	In Stock	£590.00
SDG6000X	Siglent	2	200MHz, 350MHz, 500MHz	2.4GSa/s	20 Vpp	±1 ppm	196 Types of Waveform	20Mpts	AM, DSB-AM, FM, PM, ASK, FSK, PSK, PWM	Up to 400MHz	In Stock	£1,103.00
SDG7000A	Siglent	2	350MHz, 500MHz, 1GHz	5GSa/s	24 Vpp	±1 ppm	TBA	512Mpts	AM, DSB-AM, FM, PM, ASK, FSK, PSK, PWM	Up to 400MHz	On Backorder	£6,674.00
SDG800	Siglent	1	10MHz, 30MHz	125MSa/s	10 Vpp	±50/100 ppm	46 Types of Waveform	16kpts	AM, DSB-AM, FM, PM, FSK, ASK, PWM, Sweep, Burst	-	On Backorder	£146.00
SDG8000A Series	Siglent	2, 4	5GHz	10GSa/s	1.5 Vpp	±2%	196	2Gpts	2ASK, 4ASK, 8ASK, BPSK, QPSK, 8PSK, DBPSK, DQPSK, OQPSK, D8PSK, 8QAM, 16QAM, 32QAM, 64QAM, 128QAM, 256QAM, 2FSK, 4FSK, 8FSK, 16FSK, MSK, MultiTone, OFDM, customize	-	On Backorder	£39,826.00