Rigol DG821 25MHz Single-Channel Function / Arbitrary Waveform Generator

£206.00 (£247.20 inc VAT)

5+ In UK Stock

Availability: Stock models delivered next working day (UK only) for orders placed before 15:00 (Mon - Fri)

Rigol Availability


Rigol DG821 Function Generator

The DG821 is a 25MHz, 1CH Function Generator with a maximum sampling rate of 125MSa/s. The Rigol DG800 series offers a user-friendly and high-performance function/arbitrary waveform generator solution at a very attractive price. Each instrument provides many functions including; function generator, arbitrary waveform generator, noise source, pulse generator, harmonics generator, analogue / digital modulator and frequency counter. Any Rigol DG800 series function/arbitrary waveform generator would be a valuable asset in any home, business or education laboratory.


  • Unique SiFiII (Signal Fidelity II) technology
  • Two fully functional and independent channels (optional upgrade on single-channel models)
  • Maximum frequency 25MHz
  • 125MSa/s sample rate
  • 16-bit vertical resolution
  • Basic waveforms: Sine, square, ramp, pulse, noise, DC, dual-tone
  • Advanced waveforms: PRBS, RS232, sequence
  • 160 built-in arbitrary waveforms
  • Up to 8Mpts (optional) arbitrary waveform memory, 2Mpts standard
  • Supported modulation: AM, FM, PM, ASK, FSK, PSK & PWM
  • Intuitive arbitrary waveform editing software for PC
  • ±1ppm frequency stability
  • Phase noise <-105dBc/Hz @ 10kHz (f = 10MHz)
  • Built-in 7 digit counter up to 240MHz
  • Built-in 8th order harmonics generator
  • Waveform summing function
  • 4.3″ TFT LCD colour touch-screen display (480 x 272), 16M colours
  • Connectivity… USB Host & Device, (USB-LAN optional)
  • Standard accessories… UK & European mains leads, BNC cable (25MHz & 35MHz models only), quick guide
  • Optional accessories… 40dB attenuator, USB to LAN module
  • Other options include… Single-to-dual channel upgrade licence, memory depth upgrade (to 8Mpts) licence, Telonic Standard Calibration (traceable to UK national standards), RCL 17025 Calibration

Product Videos

DG800 and DG900 Arbitrary Function Generators
DG800 and DG900 Series User Interface



Waveform Generator DG800 Series


Waveform Generator DG800 Series datasheets



Rigol DG800 Datasheet


User Guide

Rigol DG800 User Guide


Application Notes

SiFi 2 Technology and 16 Bit Resolution App Note



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