Overview

The UNI-T UTG1022X is a 20 MHz dual-channel arbitrary waveform generator built around a 16-bit DAC and 200 MSa/s sample rate. The Essential-Series brings 16-bit signal fidelity to the entry-bench price tier — 65,536 amplitude levels deliver cleaner low-amplitude output and lower quantization noise than the 14-bit DACs typical at this price point.

7 modulation types (AM, FM, PM, ASK, FSK, PSK, PWM), linear and logarithmic sweep, three pulse-burst modes (N-cycle, gated, infinite), and 200 built-in arbitrary waveforms cover the full range of bench signal-generation tasks. A built-in 7-digit frequency counter (100 mHz to 200 MHz) and USB-Host support for thumb-drive arbitrary waveform upload round out a feature set that competes directly with mid-tier generators at significantly higher price points.

Key Features

UNI-T UTG1022X Details

16-Bit Vertical Resolution

A 16-bit DAC provides 65,536 amplitude levels — 4× the resolution of typical 14-bit Essential-tier generators. This reduces quantization-noise floor and produces measurably cleaner output, particularly on low-amplitude signals where 14-bit step error becomes audible or visible. For applications like ADC linearity testing, audio characterization, and sensor-front-end stimulus, the extra DAC bits translate directly into lower SNR-floor measurement results.

Dual-Channel Output with Same Function

Both channels deliver the full feature set independently: same waveforms, same modulation, same burst and sweep. The full 20 Vpp output amplitude (high-Z) is maintained on both channels at 10 MHz — no derating with channel-count or frequency. For applications requiring synchronized stimulus (differential signals, two-tone testing, phase-locked stimulus), the second channel doesn't cost a capability.

7 Modulation Types

AM, FM, PM, ASK, FSK, PSK, and PWM with internal and external source. The digital modulation types (ASK, FSK, PSK) cover communications testing scenarios that analog-only generators cannot. Modulation source is configurable internal or external for ASK/FSK/PSK; PWM accepts external modulation input. Modulation frequency range extends to 1 MHz on AM/FM/PM/PWM.

Pulse Burst Function

Three burst modes: N-cycle (output 1 to 50,000 cycles per trigger), gated (output while gate is asserted), and infinite (continuous after trigger). Trigger source is configurable internal or external, with rising or falling edge selection. For pulse-train stimulus — relay activation, motor-drive testing, microcontroller interrupt simulation — burst output replaces a manual pulse generator in the workflow.

Frequency Sweep

Linear and logarithmic sweep modes for component characterization. Sweep time spans 1 ms to 500 s with ±0.1% accuracy — fast enough for sweep-and-trigger work, long enough for filter Bode plots and resonance characterization. Carrier waveforms include sine, square, ramp, and arbitrary, so sweeps can use any of the standard output shapes.

High SNR on Low-Amplitude Outputs

When small AC signals ride on top of a large DC offset (a typical bias configuration for op-amp characterization or sensor simulation), the UTG1022X maintains output cleanliness without the noise pickup that scales-down to compensate. Combined with the 16-bit DAC, this means low-amplitude work on a DC pedestal stays usable down to the millivolt range.

Low Jitter

150 ps typical pulse-wave jitter from the digital-sampling architecture. For applications that depend on timing precision — serial-bus stimulus, clock-edge characterization, time-domain reflectometry probes — the jitter floor matters more than the bandwidth headline. Below 5 MHz square output, jitter is specified as 2 ppm + 200 ps; above 5 MHz, the floor is 200 ps.

7-Bit Frequency Counter

A built-in frequency counter measures external signals from 100 mHz to 200 MHz (TTL compatible). Mounted on the shared front-panel FSK / CNT / Sync BNC, the counter activates when the sync output function is disabled. For bench setups that don't justify a dedicated counter, this means frequency measurement is available alongside the generator without additional hardware.

Arbitrary Waveform Editor

200 built-in arbitrary waveforms cover standard engineering shapes — from sinx-over-x and gaussian to medical-and-biology profiles. The upper-computer software extends this with custom waveform creation: point-by-point drawing, math-expression generation, CSV import. Custom waveforms transfer over USB-Device for SCPI workflows, or via USB-Host from a thumb drive for direct-import scenarios without a connected computer.

Applications

Engineering Bench — Primary Function Generator

For most product-development bench work, the UTG1022X covers the daily-use envelope: dual-channel signal source, modulation across analog and digital scenarios, burst-mode pulse stimulus, and sweep for filter and amplifier characterization. 16-bit DAC keeps the output clean enough for ADC characterization down into the millivolt range.

Education and Teaching Labs (Advanced)

For signals-and-systems labs, communications-class instruction, and digital-systems courses, the UTG1022X covers the curriculum — all four basic analog modulations (AM, FM, PM), the three core digital modulations (ASK, FSK, PSK), and PWM in one instrument. USB-Host arbitrary-waveform upload enables student-designed waveforms without a computer-tethering hassle.

Switching-Mode Power Supply and Filter Characterization

Linear and logarithmic frequency sweep across the 20 MHz output range covers SMPS control-loop characterization, EMI filter response measurement, and crystal-oscillator pull testing. Sweep time configurable 1 ms to 500 s lets the measurement match the dynamics being characterized.

Sensor and Transducer Stimulus

16-bit resolution and 1 µHz frequency resolution support precise stimulus for sensor characterization, ADC linearity testing, and op-amp behavioral testing. Dual independent channels enable differential-input testing without a second instrument.

Production Test and QC Bench

For repeated bench-test scenarios — relay testing, motor-drive stimulus, communications-link verification — the UTG1022X's SCPI command set enables script-based test automation. Burst modes support cycle-counted stimulus that production tests rely on for repeatability.

Specifications

Accessories and Family Options

Included with Every Unit

• Power cord conforming to destination country standard
• USB cable (UT-D04)
• BNC-BNC cable (UT-L45)
• BNC-to-alligator clip cable (UT-L02A)

Recommended Options

• UT-M14 — 10 W external power amplifier option

Family Members

The UTG1000X Essential-Series consists of three SKUs sharing the same chassis, sample rate, modulation set, burst modes, and 16-bit DAC:

• UTG1022X — 20 MHz sine / 10 MHz square (this product)
• UTG1022X-PA — UTG1022X with built-in 4 W power amplifier (1 µHz to 100 kHz output, > 18 V/µs slew rate)
• UTG1042X — 40 MHz sine / 20 MHz square

Step Up — UTG2000B Advanced-Series

For deeper memory (16 Mpts vs 4 kpts arbitrary length), higher sample rate (320 MSa/s on UTG2062B), LAN connectivity, 10 MHz In/Out reference, and a wider modulation envelope (1 MHz modulating frequencies on AM/FM/PM up to higher carrier rates), the bench-form-factor UTG2025A, UTG2062B, UTG2082B, and UTG2122B Advanced-Series generators cover 25 MHz, 60 MHz, 80 MHz, and 120 MHz sine output respectively.

Frequently Asked Questions