UNI-T USG3065M-P | Professional RF Signal Generator with Mechanical Attenuator (9 kHz to 6.5 GHz)

Overview

The UNI-T USG3065M-P RF signal generator delivers premium performance for advanced RF applications, featuring extended frequency coverage from 9 kHz to 6.5 GHz with exceptional signal purity. Distinguished by its mechanical attenuator technology, this professional-grade instrument provides enhanced output power up to +24 dBm and superior level stability crucial for 5G sub-6 GHz testing, WiFi 6/6E development, power amplifier characterization, and production environments where signal integrity is paramount.

Engineered for the most demanding test scenarios, the USG3065M-P combines precision frequency control (0.001 Hz resolution) with comprehensive modulation capabilities and an intuitive 5-inch capacitive touchscreen interface. The mechanical attenuator variant ensures consistent performance even at high output levels, delivering the reliability and accuracy RF professionals demand when testing cutting-edge wireless technologies or devices with high insertion loss requiring strong drive signals.

USG3065M-P RF Signal Generator with mechanical attenuator for enhanced output power and extended frequency range

Key Features

• Mechanical Attenuator Technology - Provides superior output level stability and enhanced maximum power compared to standard electronic attenuators
• Extended Frequency Coverage - Generates signals from 9 kHz to 6.5 GHz with ultra-fine 0.001 Hz resolution for precise testing
• Enhanced Output Power - Delivers up to +24 dBm (250 MHz to 1.2 GHz) for testing high-attenuation components and systems
• Superior Signal Quality - Low phase noise (<-122 dBc/Hz @ 1 GHz, 20 kHz offset) ensures accurate measurements
• Improved SWR Performance - Better standing wave ratio minimizes reflections and measurement uncertainties
• Complete 5G Sub-6 GHz Coverage - Ideal for testing all current 5G NR bands below 6 GHz, including C-band deployments
• WiFi 6E Support - Full coverage of 2.4 GHz, 5 GHz, and the new 6 GHz band for next-generation WiFi testing
• Versatile Modulation - AM, FM, and ΦM capabilities with internal, external, or combined modulation sources
• Intuitive Operation - 5-inch capacitive touch screen with clear visual feedback and logical menu organization
• Flexible Connectivity - Remote control via LAN and USB interfaces for automated testing environments
• Integrated Function Generator - Built-in 50 MHz function/arbitrary waveform generator adds versatility
• Advanced Pulse Modulation - Optional pulse modulation with on-off ratios up to 80 dB (USG3000M-PM)
• Narrow Pulse Generator - Optional pulses as narrow as 20 ns with 10 ns resolution (USG3000M-PG)

Mechanical Attenuator Advantage

The USG3065M-P's mechanical attenuator technology represents a significant upgrade over standard electronic attenuators, providing both higher maximum output power and superior RF performance across its extended frequency range. This precision-engineered attenuator delivers up to 4-5 dB more output power across all frequency bands, enabling testing of components with high insertion loss or receiver sensitivity measurements that require stronger signals. The mechanical design ensures excellent level accuracy and stability even at maximum power levels, critical for consistent results in production testing and research applications.

Beyond raw power advantages, the mechanical attenuator provides superior standing wave ratio (SWR) characteristics, minimizing signal reflections that can compromise measurement accuracy. This improved impedance matching is particularly valuable when testing sensitive RF components where reflection-induced artifacts could mask actual device performance. For applications requiring both high output power and precise level control across the extended 6.5 GHz range, the USG3065M-P offers an optimal combination of performance characteristics that justify its position as the premium model in the USG3000M series.

Mechanical attenuator technology provides enhanced output power and superior impedance matching for critical measurements

Enhanced Output Power Performance

The USG3065M-P delivers industry-leading output power across its entire frequency range, providing the signal strength needed for challenging RF testing applications. With maximum output levels of +24 dBm (250 MHz to 1.2 GHz), +22 dBm (1.2 GHz to 3.6 GHz), and +20 dBm (3.6 GHz to 6.5 GHz), this model significantly outperforms the standard electronic attenuator version. This enhanced power capability is particularly valuable when compensating for cable losses, driving power amplifiers, or testing receiver sensitivity through complex signal paths at higher frequencies.

The mechanical attenuator design maintains excellent level accuracy across the full power range, ensuring consistent test conditions even at maximum output. This combination of high output power and precise level control makes the USG3065M-P ideal for production testing environments where signal integrity across multiple test stations is critical. The robust attenuator design also provides excellent reliability under continuous high-power operation, making it suitable for applications requiring sustained maximum output levels across the extended frequency range.

Enhanced output power across the full frequency range up to 6.5 GHz for demanding RF applications

Comprehensive Modulation Capabilities

The USG3065M-P provides versatile modulation capabilities essential for thorough communications system testing. Standard analog modulation includes AM with depths up to 99%, FM with deviation up to 10 MHz, and phase modulation up to 5 radians. The flexible modulation sources allow for internal, external, or combined operation, adapting to diverse testing scenarios. Each modulation type features precise control of parameters, enabling accurate simulation of real-world signal conditions across the extended frequency range up to 6.5 GHz.

For applications requiring pulsed RF signals, the optional USG3000M-PM pulse modulation capability delivers outstanding on-off ratios up to 80 dB with fast rise/fall times below 20 ns. The pulse modulation can operate in various modes including free-running, triggered, gated, and customized pulse train patterns. When combined with the optional USG3000M-PG narrow pulse generator, the system can generate pulses as narrow as 20 ns with 10 ns resolution, perfect for radar system testing and pulse characterization applications. The mechanical attenuator in the USG3065M-P further enhances pulse performance by providing more powerful pulse signals with better on-off characteristics.

Comprehensive modulation capabilities with AM, FM, and ΦM for versatile testing across the entire frequency range

Advanced Sweep Functions

The USG3065M-P features comprehensive sweep capabilities that simplify component characterization and system response testing. The instrument supports frequency, amplitude, and list sweep modes with customizable step sizes and dwell times. Engineers can perform frequency sweeps across the full 9 kHz to 6.5 GHz range with linear or logarithmic step patterns, enabling efficient measurement of frequency-dependent parameters like filter responses or amplifier gain flatness across all modern wireless bands including 5G and WiFi 6E.

For more complex testing requirements, the list sweep mode allows creation of custom frequency-amplitude point sequences, ideal for focused testing at specific frequencies of interest. Sweep operation can be triggered via multiple methods including free-running, external trigger, manual key press, or computer command, providing flexibility for both manual testing and automated sequences. The mechanical attenuator in the USG3065M-P ensures excellent level accuracy throughout sweeps, even when operating near maximum output power, making it ideal for power amplifier characterization and high-dynamic-range measurements across the extended frequency range.

Advanced sweep functions for comprehensive frequency response characterization up to 6.5 GHz

Extended Applications for 5G and WiFi 6E

The USG3065M-P's extended frequency range up to 6.5 GHz makes it ideally suited for testing next-generation wireless technologies. It provides complete coverage of all 5G NR sub-6 GHz frequency bands, including the critical C-band (3.3-4.2 GHz) deployments and extending to the n96 band that reaches 6.425 GHz. The exceptional signal purity and enhanced output power ensure accurate characterization of 5G receiver performance and RF components, while the mechanical attenuator provides the level stability required for consistent production testing.

For WiFi applications, the instrument covers all current standards including WiFi 6E, which operates in the newly allocated 6 GHz band (5.925-7.125 GHz). This makes the USG3065M-P the ideal choice for testing next-generation wireless access points, client devices, and RF components across all three WiFi bands (2.4 GHz, 5 GHz, and 6 GHz). The enhanced output power is particularly valuable for these higher frequency applications where cable and fixture losses can significantly impact test signals, ensuring adequate signal levels reach the device under test even in complex test configurations.

Complete frequency coverage for 5G NR sub-6 GHz and WiFi 6E applications

Intuitive User Interface

The USG3065M-P features a 5-inch capacitive multi-touch screen with an intuitive user interface that accelerates test setup and enhances productivity. The flat design with clear parameter organization allows for quick access to commonly used functions, while the logical menu structure ensures even complex operations can be performed with minimal keystrokes. The touch interface supports gestures for common operations, reducing setup time and allowing engineers to focus on test results rather than instrument configuration.

Visual feedback is provided through clear waveform displays for both output and modulating signals, enabling immediate verification of signal characteristics. The interface allows seamless switching between time-domain and frequency-domain views, providing comprehensive signal visualization. Numerical parameters are displayed with high visibility and logical grouping, ensuring settings are easily verifiable at a glance. This thoughtful interface design reduces learning curves and improves testing efficiency in both research and production environments.

5-inch capacitive multi-touch screen with intuitive, flat design interface for efficient operation

Integrated Function Generator

The USG3065M-P includes a built-in 50 MHz function/arbitrary waveform generator that extends the instrument's versatility beyond RF applications. This integrated LF generator produces high-quality sine waves up to 50 MHz, square and pulse waveforms up to 15 MHz, and triangular waves up to 3 MHz. With output amplitude adjustable from 1 mVpp to 2 Vpp and DC offset control, it provides the signal flexibility needed for various testing applications without requiring additional equipment.

The function generator includes advanced capabilities such as linear and logarithmic sweep functions and comprehensive modulation options including AM, FM, and pulse modulation. For digital communications testing, it supports ASK, FSK, PSK, and QAM modulation with various digital patterns. This integration delivers significant value by combining two essential instruments in one compact unit, saving both bench space and equipment costs while maintaining signal generation quality.

Integrated 50 MHz function/arbitrary waveform generator adds versatility to the RF signal generator

Optional Power Meter Kit

The optional USG3000M-PK power meter kit transforms the USG3065M-P into a comprehensive RF test solution by adding accurate power measurement capabilities. Connected through the front panel USB port, this accessory enables precise RF power measurements, particularly valuable for calibrating output power levels and verifying signal integrity at the device under test. The power measurement system allows direct verification of actual received power, eliminating uncertainty in test setups.

A key capability of the power meter option is the line loss calibration function, which automatically compensates for cable and fixture losses in the test path. This ensures that the power level reaching the device under test matches the specified value, improving measurement accuracy and test consistency. This feature is especially valuable when using the USG3065M-P's enhanced output power capabilities in complex test setups with multiple connection points or long cable runs. By combining signal generation and power measurement in a single coordinated system, the power meter option streamlines test procedures and reduces the need for additional test equipment.

Optional power meter kit for precise power measurement and line loss calibration

Professional Applications

5G Sub-6 GHz Development and Testing

The USG3065M-P is engineered specifically for the challenges of 5G sub-6 GHz development and testing. With its extended frequency range up to 6.5 GHz, mechanical attenuator providing enhanced output power, and excellent signal purity, it addresses the requirements of next-generation wireless systems. The instrument covers all current 5G NR FR1 bands, including the critical C-band (3.3-4.2 GHz) deployments and n96 band extending to 6.425 GHz. The enhanced output power compensates for lossy test setups common in 5G testing, while the mechanical attenuator ensures level stability critical for consistent measurements. When characterizing 5G receivers and components, the low phase noise and high output power enable accurate sensitivity testing even with complex test fixtures. For automated test environments, the comprehensive remote control capabilities support efficient integration into 5G production systems.

WiFi 6/6E Testing

For WiFi testing applications, the USG3065M-P provides complete coverage of all current standards including WiFi 6E, which extends into the 6 GHz band (5.925-7.125 GHz). This makes it perfect for testing next-generation access points, client devices, and RF components across all three WiFi bands (2.4 GHz, 5 GHz, and 6 GHz). The mechanical attenuator's enhanced output power is particularly valuable for these higher frequency applications where cable and fixture losses can significantly impact test signals. The superior SWR characteristics minimize reflections that could compromise measurement accuracy, especially important when testing WiFi components with steep filter responses. For production environments, the instrument's reliability and level stability ensure consistent test results across multiple devices and test stations.

Power Amplifier Development and Testing

RF and microwave power amplifier engineers will find the USG3065M-P particularly valuable during development and production testing. The high output power eliminates the need for pre-amplifiers in many test setups, simplifying configurations and reducing potential error sources. The mechanical attenuator provides the level stability required for accurate gain, efficiency, and linearity measurements across various operating conditions up to 6.5 GHz. When combined with the optional power meter, the instrument enables closed-loop verification of amplifier performance parameters. For modulated signal testing, the AM, FM, and optional pulse modulation capabilities allow thorough characterization of amplifier behavior under realistic operating conditions, while the enhanced output power ensures adequate drive levels even for high-power devices operating at the higher frequency ranges.

Production and Automated Testing

Manufacturing environments benefit from the USG3065M-P's combination of high output power, extended frequency range, level stability, and automation capabilities. The mechanical attenuator's enhanced reliability under continuous high-power operation makes it ideal for 24/7 production testing across the full 9 kHz to 6.5 GHz range, while its superior level accuracy ensures consistent test conditions across multiple stations. The comprehensive remote control options via LAN, USB, or optional GPIB support seamless integration into automated test systems, with the additional output power providing margin for test fixture and cable losses that accumulate in complex production setups. For high-volume manufacturing of 5G, WiFi 6E, or IoT devices where test time directly impacts throughput, the instrument's fast frequency and amplitude switching speeds minimize delays between test steps.

Technical Specifications

USG3000M Series Model Comparison

The USG3000M series offers multiple models to address specific RF testing requirements. The series includes models with different frequency ranges and output power capabilities, allowing you to select the instrument that best meets your application needs and budget constraints.

Standard Features Across All Models

All USG3000M series models share a common set of core capabilities that ensure professional-grade performance regardless of which variant you select:

• 0.001 Hz frequency resolution
• Automatic Level Control (ALC) with multiple operating modes
• Standard AM, FM, and ΦM modulation
• 5-inch capacitive multi-touch display
• Built-in 50 MHz function/arbitrary waveform generator
• LAN and USB connectivity
• Step, list, and sweep functionality
• Low phase noise and high signal purity

Selecting the Right Model

When choosing between USG3000M series models, consider these factors to determine which variant best meets your requirements:

Frequency Requirements

If your applications only require signals up to 4.5 GHz, the USG3045M models offer excellent value. For higher frequency applications including 5 GHz Wi-Fi bands, 5G sub-6 GHz testing, or other systems operating between 4.5 and 6.5 GHz, select the USG3065M models. The "-P" variants with mechanical attenuators provide enhanced