Overview

The UNI-T UTG9504T is a four-channel arbitrary waveform generator built on a 2 Main + 2 AUX channel architecture. The two Main channels (CH1, CH2) output to 500 MHz sine at a 2.5 GSa/s sample rate with a 14-bit vertical-resolution DAC; the two AUX channels (CH3, CH4) provide additional independent outputs to 200 MHz at 625 MSa/s and 16-bit resolution. An 8 pts to 64 Mpts per-Main-channel arbitrary memory and 16 GB of internal file storage support long-form custom stimulus. A 10.1-inch capacitive touch display replaces menu-driven navigation with direct parameter manipulation.

160 MHz square / pulse on the Main channels, 1 µHz frequency resolution across the full range, total harmonic distortion of 0.075% (DC to 20 kHz), and an 800 MHz hardware frequency counter. Fifteen analog and digital modulation types — including 3FSK, 4FSK, QAM, and the full BPSK / QPSK / OSK set. Linear, logarithmic, step, and list sweep. Three burst modes. Advanced Multi-Pulse, Multi-Tone, Sequence, Pattern, I/Q, and Expression functions. Over 200 built-in arbitrary waveforms with SPI / I²C / UART digital-protocol output.

Choosing Your Model — UTG9000T Elite-Series

Three four-channel models share the same 2 Main + 2 AUX architecture, the same modulation set, advanced functions, interfaces, and chassis. They differ on two axes: maximum Main-channel output frequency, and — at the top of the range — Main-channel vertical resolution.

On all three models the two AUX channels (CH3/CH4) run at 16-bit resolution and 625 MSa/s; the resolution difference above applies to the Main channels (CH1/CH2). This page describes the UTG9504T — the Specifications table below lists this model's figures.

Key Features

UNI-T UTG9504T Details

Four-Channel Architecture: 2 Main + 2 AUX

The instrument provides four output channels in a Main / AUX architecture. The two Main channels (CH1, CH2) carry the full output frequency and the model's main-channel vertical resolution; the two AUX channels (CH3, CH4) provide additional independent outputs to 200 MHz (160 MHz on the 350 model) at 625 MSa/s and 16-bit resolution. All four run independently, so a single instrument can drive a primary stimulus pair plus two auxiliary clock or reference signals.

Channel Coupling and Merging

Channels can be coupled with configurable frequency, amplitude, and phase relationships so a parameter change on one channel propagates to its coupled partners by a defined ratio and offset. Outputs can also be merged into arbitrary combinations — for example CH1 = CH1 + CH2 + CH3 + CH4 — producing summed and composite signals from a single instrument without external combiners.

Multi-Channel Merging for Composite Signals

Channel merging combines any selection of the four outputs into a single composite waveform, summing channels in arbitrary configurations. This synthesizes layered test signals — carrier plus interferer, signal plus controlled noise, or multi-component stimulus — directly from the instrument with no external summing hardware.

Arbitrary Waveforms and Built-In Editor

Point-by-point arbitrary output spans 8 pts to 64 Mpts on the Main channels with over 200 non-volatile built-in waveforms and 16 GB of internal storage for .bsv/.csv files. The built-in editor supports manual drawing, line drawing, and expression-based generation, and also runs on a PC over USB or LAN for large waveform construction.

15 Modulation Types in One Instrument

Fifteen analog and digital modulation schemes are built in: AM, FM, PM, DSB-AM, ASK, FSK, PSK, 3FSK, 4FSK, BPSK, QPSK, OSK, SUM, QAM, and PWM. Each channel supports independent or simultaneous internal/external modulation and internal/external/manual triggering, alongside Linear/Logarithmic/Step/List frequency sweep and N-cycle/gate/infinite burst.

Sweep, PRBS, and Pseudo-Random Sequences

Linear, logarithmic, step, and list frequency sweep cover stimulus-response and frequency-characterization work. Pseudo-random binary sequence output runs PN3 through PN33 patterns with adjustable bit rate and edge time for serial-link, jitter-tolerance, and bit-error-rate testing directly from the generator.

Digital-Protocol Output: SPI, I²C, UART

Built-in digital-protocol output drives SPI, I²C, and UART buses directly. SPI and I²C run a 1 Hz to 50 MHz clock with configurable data depth; UART supports custom baud rates with adjustable data, stop, and parity bits — useful for stimulating and emulating embedded serial peripherals without a separate protocol generator.

One-Click SNR and 800 MHz Frequency Counter

One-click SNR output applies a calibrated noise overlay to a clean carrier for fast signal-to-noise and receiver-sensitivity testing. A high-precision hardware frequency counter measures 100 mHz to 800 MHz with 8-digit resolution and AC/DC coupling, so frequency, period, and duty-ratio measurements run on the same instrument.

Applications

The UTG9504T envelope — 2 Main + 2 AUX channels, 2.5 GSa/s Main sampling, 14-bit Main-channel resolution, 64 Mpts per Main channel, THD 0.075%, 15-type modulation, and the full advanced-function set — targets benchtop work needing genuine multi-channel stimulus, deep arbitrary support, or wide modulation coverage.

• Multi-channel embedded and RF development — two Main channels drive primary stimulus while two AUX channels supply clock or reference signals, all from one instrument.
• RF and communications stimulus — 3FSK, 4FSK, BPSK, QPSK, OSK, QAM digital modulation and SUM / DSB-AM analog modulation across the Main-channel output range.
• High-speed digital and serial-link test — fast Main-channel edges, PRBS PN3 to PN33, and SPI / I²C / UART protocol output for interface and jitter-tolerance work.
• Audio and instrumentation testing — THD 0.075% from DC to 20 kHz when characterizing op-amp distortion, ADC noise floors, and audio-band response.
• Long-form arbitrary playback — up to 64 Mpts per Main channel holds extended protocol streams and complex composite waveforms; 16 GB internal file storage.
• I/Q and modulated-carrier work — baseband I/Q generation for communication-system verification.
• Automated test (ATE) — LAN/USB remote control and instrument-manager software for synchronized benches.

Accessories and Family Options

Included with Every Unit

• Power cord conforming to destination country standard
• USB data cable (UT-D14)
• BNC-to-BNC cable × 4 (UT-L45)

Family Members

The UTG9000T Elite-Series consists of three four-channel models sharing the same 2 Main + 2 AUX architecture, modulation set, advanced functions, and chassis:

• UTG9354T — 350 MHz Main sine, 14-bit Main DAC
• UTG9504T — 500 MHz Main sine, 14-bit Main DAC (this product)
• UTG9604T — 600 MHz Main sine, 16-bit Main DAC

Frequently Asked Questions

Warranty

This instrument is backed by UNI-T's 3+2 Year Warranty — 3 years of standard coverage, plus 2 additional years free when you register your product. That's 5 years of total protection at no extra cost.

The warranty covers manufacturing defects and component failures under normal use conditions. UNI-T instruments are built for professional daily use, and our warranty reflects that commitment to long-term reliability.