Rigol DSG821A RF Signal Generator
1. Product Description
The Rigol DSG821A is a portable, easy-to-use RF (radio frequency) signal generator designed for electronic testing and measurement applications. It’s mainly used to produce stable, accurate RF signals for testing electronic devices like wireless modules, receivers, antennas, and communication equipment—common in fields such as electronics manufacturing, R&D labs, and maintenance work.
With a compact, lightweight design, it’s easy to carry for on-site testing (e.g., troubleshooting wireless devices) or use on lab benches. It offers simple operation via a clear display and intuitive buttons, making it suitable for both beginners and experienced technicians. It delivers reliable signal performance, ensuring accurate test results for verifying device functionality or diagnosing issues.
2. Technical Specifications
- Frequency Range: 9 kHz to 2.1 GHz (covers most common RF bands for wireless devices like Wi-Fi, Bluetooth)
- Output Power: -130 dBm to +13 dBm (adjustable for different test needs, from weak to moderate signals)
- Frequency Accuracy: ±(0.1 ppm + 1 Hz) (ensures precise signal generation for reliable testing)
- Modulation Modes: Supports AM, FM, PM, and pulse modulation (for simulating real-world signal conditions)
- Display: 4.3-inch color LCD screen (clearly shows signal settings and status)
- Power Supply: AC 100–240 V (for lab use) or optional battery (for portable on-site testing)
- Dimensions: Compact size (approx. 260 mm × 170 mm × 85 mm) and lightweight (≈2.5 kg) for easy transport
- Interface: USB, LAN, and GPIB (optional) ports (for remote control or data transfer to computers)
3. System Introduction
The DSG821A is part of Rigol’s “Signal Generator Series”—a lineup of test equipment focused on providing affordable, reliable signal solutions for electronics testing. This system typically includes the DSG821A signal generator, along with complementary Rigol tools like oscilloscopes, spectrum analyzers, and power supplies, forming a complete test setup.
In the system, the DSG821A acts as the “signal source”: it generates the specific RF signals needed to test a device, while an oscilloscope or spectrum analyzer measures the device’s response. This combination helps technicians verify if devices work as designed (e.g., checking if a receiver correctly picks up signals) or identify problems (e.g., weak signal reception). The series is widely used in small to medium labs, electronics factories, and field maintenance teams, balancing performance and cost.
4. Recommended Related Models in the Same Series
- Rigol DSG830A: Higher-frequency variant (up to 3 GHz) for testing devices using higher RF bands (e.g., some 5G low-band devices).
- Rigol DSG815A: Lower-frequency model (up to 1.5 GHz) for basic RF testing (e.g., simple wireless sensors) at a lower cost.
- Rigol DSG821A-BAT: DSG821A with built-in rechargeable battery (for extended portable use, e.g., on-site telecom maintenance).
- Rigol DSG821A-GPIB: DSG821A with added GPIB interface (for integration into older lab test systems that use GPIB control).
- Rigol DSG840A: High-performance model (up to 4 GHz) with advanced modulation (e.g., IQ modulation) for testing complex communication devices (e.g., 4G/5G modules).
- Rigol DSG821A-S: Compact “slim” version of DSG821A (thinner design) for tight lab spaces or portable test kits.
- Rigol DSG825A: 2.5 GHz frequency range model with higher output power (+16 dBm) for testing devices needing stronger test signals (e.g., high-power antennas).
- Rigol DSG821A-KIT: DSG821A bundled with test cables and a carrying case (ready-to-use kit for field technicians).
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