Siglent SDG2122X 120MHz Function / Arbitrary Waveform Generator
The SDG2122X is the 120 MHz flagship of SIGLENT's SDG2000X series: a dual-channel arbitrary waveform generator with 1.2 GSa/s sampling, 16-bit resolution and 20 Vpp output. TrueArb (<150 ps jitter) and EasyPulse technologies, rich AM/FM/PM/FSK/ASK/PSK/PWM modulation, sweep, burst, 196 arbitrary waveforms, a frequency counter and a 4.3-inch touchscreen suit demanding R&D, communications and production test.
Product overview
The SDG2122X is a dual-channel function / arbitrary waveform generator with up to 120 MHz bandwidth, a 1.2 GSa/s sample rate and 16-bit vertical resolution. SIGLENT’s proprietary TrueArb and EasyPulse techniques solve the weaknesses of traditional DDS generators when producing arbitrary, square and pulse waveforms — giving you high-fidelity, low-jitter signals.
Two fully independent channels deliver up to 20 Vpp with an 80 dB dynamic range, and a rich feature set — AM/FM/PM/FSK/ASK/PSK/PWM modulation, sweep, burst, harmonic generation, 196 built-in arbitrary waveforms and a high-precision frequency counter — is presented on a bright 4.3-inch touchscreen. Standard USB and LAN interfaces (with optional GPIB) make the SDG2122X equally at home on the bench and in an automated test rack.
Key highlights
120 MHz · dual-channel
Two fully independent channels of function and arbitrary waveform generation up to 120 MHz.
1.2 GSa/s · 16-bit
A high-performance sampling system reconstructs waveforms with high time-domain and amplitude accuracy — no detail lost.
TrueArb — <150 ps jitter
Point-by-point arbitrary generation uses every stored data point, keeping jitter and distortion very low.
EasyPulse low-jitter pulse
Precise pulse-width and edge control with far lower jitter than a conventional DDS pulse.
Modulation, sweep & burst
AM, DSB-AM, FM, PM, FSK, ASK, PSK and PWM, plus sweep, burst and harmonic generation.
4.3-inch touch · 196 arbs
A 4.3-inch touchscreen, 196 built-in arbitrary waveforms and a high-precision frequency counter.
Core capabilities
Dual-channel, 20 Vpp output
Two channels with up to 20 Vpp amplitude and an 80 dB dynamic range for clean, high-fidelity signals.
TrueArb point-by-point
Any 8-point to 8-Mpts arbitrary waveform at 1 μSa/s–75 MSa/s, generated point-by-point with <150 ps jitter.
EasyPulse precise pulses
Wide-range, high-precision pulse-width and rise/fall-time adjustment with low jitter square and pulse output.
Modulation, sweep & burst
AM/DSB-AM/FM/PM/FSK/ASK/PSK/PWM modulation, plus sweep, burst and harmonic functions for versatile testing.
Built-in frequency counter
A high-precision hardware frequency counter for quick, convenient signal verification on the bench.
Standard connectivity
USB Host, USB Device (USBTMC) and LAN (VXI-11) as standard, with optional USB-GPIB and EasyWave PC software.
Features in depth
TrueArb technology
With SIGLENT's TrueArb technology, the generator keeps all the advantages of DDS while overcoming its serious weaknesses of jitter and distortion. Because TrueArb builds arbitrary waveforms point-by-point, every data point stored in memory is used to create the output — no points are missed or repeated — so arbitrary waveforms have very low jitter, below 150 ps. Any 8-point to 8-Mpts waveform can be output at a sampling rate from 1 μSa/s to 75 MSa/s, giving fine control over complex, high-fidelity signals for demanding and evolving applications.
EasyPulse technology
When a pulse is generated by a conventional DDS instrument, a one-clock jitter appears whenever the sampling rate is not an integer multiple of the output frequency. SIGLENT's EasyPulse technology overcomes this weakness to produce genuinely low-jitter pulse and square waveforms, and brings a wide range and extremely high precision to pulse-width and rise/fall-time adjustment. The result is clean edges and stable timing for demanding digital, timing and communication applications.
High-performance sampling system
Benefiting from a 1.2 GSa/s sampling rate and 16-bit vertical resolution, the SDG2000X achieves extremely high accuracy in both the time and amplitude domains, reconstructing waveforms more precisely and with lower distortion. Combined with up to 20 Vpp output amplitude and an 80 dB dynamic range, it delivers high-fidelity signals across the full bandwidth. Two fully independent channels, a bright 4.3-inch touchscreen and 196 built-in arbitrary waveforms round out a versatile everyday bench instrument.
Panels & connectivity
Two BNC outputs, a USB host and a 4.3-inch touchscreen up front; counter, aux, 10 MHz reference, LAN and USB at the rear.
Connectivity
- 2 × BNC output (front, 50 Ω)
- USB Host (front) — arb import & storage
- USB Device (rear, USBTMC) — PC/SCPI control
- LAN (VXI-11) — remote control & EasyWave
- Optional USB-GPIB adapter
- Counter & Aux In/Out (rear)
- 10 MHz reference in / out (rear)
- 4.3-inch capacitive touchscreen
Where it is used
Education & teaching
An affordable dual-channel generator for electronics teaching labs and student benches.
R&D & circuit design
Stimulus signals for prototyping, filter and amplifier design and characterisation.
Embedded & sensor test
Arbitrary and modulated signals to emulate sensors and drive embedded interfaces.
Comms & modulation
AM/FM/PM/FSK/ASK/PSK and PWM for communication and modulation experiments.
Service & repair
A versatile signal source with a frequency counter for troubleshooting and repair.
Production & QA
Remote control over LAN/USB/GPIB for automated functional test on the line.
In the box
Every SDG2122X ships with the accessories below, plus a BNC-to-BNC test cable.
Specifications
- Channels
- 2 (independent)
- Max. bandwidth
- 120 MHz
- Sample rate
- 1.2 GSa/s
- Vertical resolution
- 16-bit
- Max. amplitude
- ±10 V (20 Vpp)
- Dynamic range
- 80 dB
- Arb length
- 8 pts – 8 Mpts
- Arb sample rate
- 1 μSa/s – 75 MSa/s
- Built-in waveforms
- 196 arbitrary + standard set
- Arb jitter
- <150 ps (TrueArb)
- Modulation
- AM · DSB-AM · FM · PM · FSK · ASK · PSK · PWM
- Other functions
- Sweep · burst · harmonic · frequency counter
- Display
- 4.3-inch touchscreen (480 × 272)
- Interfaces
- USB Host · USB Device (USBTMC) · LAN (VXI-11)
- Optional interface
- GPIB (via USB-GPIB adapter)
- Rear I/O
- Counter · Aux In/Out · 10 MHz In/Out
- Power
- 100–240 V, 50/60 Hz · 50 W max
- Software
- EasyWave PC software · SCPI
Specifications are guidance only — the official Siglent datasheet is the definitive reference.
Compare the SDG2000X series
Three dual-channel models — choose by bandwidth. All share the 1.2 GSa/s, 16-bit engine, TrueArb/EasyPulse and 4.3-inch touchscreen.
Ready to order the SDG2122X?
In EU stock, shipped from the Netherlands with full warranty and expert support. Need a different bandwidth? Compare the other SDG2000X models above.