Rigol DG822 – 25 MHz Function/Arbitrary Waveform Generator

The Rigol DG822 is a dual-channel function and arbitrary waveform generator operating to 25 MHz, engineered for education, research, and industrial test applications. It combines SiFi II technology for point-by-point arbitrary waveform generation with a responsive 4.3-inch touchscreen interface and fanless operation. The instrument delivers 16-bit vertical resolution, 125 MSa/s sample rate, and standard memory depth of 2 Mpts (upgradeable to 8 Mpts), with frequency stability of ±1 ppm and phase noise of -105 dBc/Hz.

– Technical Specifications

Waveform Generation:
• Frequency range: DC to 25 MHz
• Channels: 2
• Arbitrary waveform memory: 2 Mpts (standard), 8 Mpts (optional)
• Sample rate: 125 MSa/s
• Vertical resolution: 16 bits
• Frequency stability: ±1 ppm
• Phase noise: -105 dBc/Hz
• Jitter: 200 ps (rms)

Waveform Library:
• Standard waveforms: Sine, Square, Ramp, Pulse, Noise, Harmonic, DC, Dual-tone
• Built-in arbitrary waveforms: 160 types
• Harmonic generator: up to 8th order
• Pulse edge time: 3 ns rise time at 25 MHz
• Square wave output: 40 MHz
• Arbitrary waveform sequencing: up to 64 events with 256 repetitions

Modulation:
• Analog: AM, FM, PM
• Digital: ASK, FSK, PSK, PWM
• SUM modulation supported

Output:
• Amplitude range: 1 mVpp to 10 Vpp
• Output impedance: 50 Ω
• Output into 50 Ω: 1.0 mVpp to 10 Vpp (DC–10 MHz), 5 Vpp (25 MHz)

Frequency Counter:
• Measurement bandwidth: 240 MHz
• Resolution: 7 digits/second
• Parameters: Frequency, period, duty cycle, positive and negative pulse width

Physical and Electrical:
• Display: 4.3-inch TFT color touchscreen
• Interfaces: USB Host/Device, LAN, Web Control
• Power input: USB Type-C
• Dimensions: 266 mm (W) × 165 mm (H) × 80 mm (D)
• Weight: 1.78 kg
• Cooling: Fanless design

– Key Features

• SiFi II point-by-point arbitrary waveform generation minimizes distortion
• Touch-enabled interface with tap and drag gesture support
• Dual-channel independent or synchronized operation
• Optional memory expansion to 8 Mpts for extended waveform complexity

– Typical Applications

• Educational lab demonstrations and student experiments
• Circuit design verification and prototype testing
• Signal conditioning and source simulation
• Industrial equipment commissioning and maintenance

– Compatibility & Integration

• USB Host/Device connectivity for control and data transfer
• Ethernet (LAN) and web-based control interface
• Optional USB-GPIB interface converter for legacy system integration
• Optional 40 dB attenuator for amplitude control