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Metrology-grade performance for demanding applications
Keysight Pro XG7-class analog signal generators include the SG6311A, E8257D, and E8663D PSG signal generators for demanding calibration, research, and production test applications. The new Pro XG7 combines two independent RF channels in a compact 2U chassis with ultra-low phase noise and calibrated maximum output power up to +22 dBm. Across the portfolio, Pro signal generators provide frequency coverage up to 67 GHz, extendable to 1.1 THz, with signal generation from continuous wave (CW) tones to complex analog modulated signals. Choose one of our most popular configurations or build the one needed for your application. Need help selecting? Check out the resources below.
Spectral purity
Low phase noise, harmonics, and spurious signals ensure accurate testing of RF integrated circuits (RFICs), communication receivers, and other high-precision applications.
High max frequency
Offers max frequency of 67 GHz, and up to 1.1 THz with a frequency extender, enabling 6G research and development (R&D) and very high-frequency radar and satellite communication testing.
Metrology-grade signals
Traceable to national and international standards, ensuring accurate, repeatable results with minimal errors, ideal for precision signal generation in R&D, military testing, and satellite communications.
Ultra-high output power
Test high-power devices and overcome test system losses with optional high-power extension, which increases the maximum output power to +30 dBm (1 W), reducing the need for external amplification.
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Maximum frequency
20 GHz to 67 GHz
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Number of outputs
1 to 2
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Phase noise @1 GHz (20 kHz offset)
-153 dBc/Hz to -143 dBc/Hz
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Output power @1 GHz
21 dBm
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Harmonics @ 1 GHz
-55 dBc
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Frequency switching speed
7000 µs to 11000 µs
Introducing the new Pro XG7
The new Pro XG7 analog signal generator provides dual-channel capability, ultra-low phase noise, and calibrated output power up to +22 dBm.
Key features:
- Phase-coherent dual channels with a shared internal reference clock
- Software-selectable modes for ultra-low phase noise or high dynamic range
- Built-in amplification for clean, high-power output
- Backwards-compatible architecture lets you reuse automated test software
Most popular configurations
XG7-class Analog Signal Generator
XG7-class Analog Signal Generator
Explore signal generator use cases
Signal generators support a wide range of applications, discover them all
Aerospace and Defense
How to Improve Radar System Sensitivity
Evaluate radar receiver performance by replacing or bypassing the internal LO with a controlled external source at the required frequency and level, then repeating the same measurement under identical conditions.
Wireless Communications
How to Test 6G Receivers with Low-Noise Signals
Generate clean signals for 6G receiver testing using a precision metrology-grade signal source.
Aerospace and Defense
Recreate direction-finding test conditions with phase-stable dual-channel analog signal generator.
Wireless Communication
Generate an RF carrier signal using a metrology-grade signal generator.
Wireless Communication
How to Establish a Metrology-Grade Reference for Calibration Labs
Establish a clean RF reference by generating a controlled signal with high-output power and low phase noise.
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Frequently asked questions
Metrology-grade signaling represents the highest level of precision and accuracy in RF signal generation. It is engineered to meet the stringent standards necessary for calibration, scientific research, and high-precision testing and measurement applications. These signal sources demonstrate ultra-low phase noise, exceptional spectral purity, minimal spurious emissions, and highly accurate frequency and amplitude stability.
Spurious signals are unwanted emissions that originate from the devices under test. Various combinations of signals in a transmitter and receiver can result in spurious signals. Spurious responses may be a spur from a local oscillator (LO), a harmonic of a power supply, distortion products, or a harmonic of the system clock. They degrade not only the receiver sensitivity but also nearby wireless systems.
For information on how to effectively measure spurious signals, check out this blog.
The maximum frequency of a signal generator refers to the highest frequency it can output, defining the upper limit of its signal generation capability. For example, a signal generator with a maximum frequency of 67 GHz can generate signals across a vast range—from near-zero frequencies up to 67 billion cycles per second (67 GHz). This broad capability makes it ideal for advanced applications, such as testing high-speed electronic components, characterizing radar systems, or supporting next-generation communication technologies.
This frequency ceiling is a crucial specification that directly affects the generator’s flexibility and its suitability for specific tasks. A 67 GHz limit, for instance, positions the device within the millimeter-wave spectrum, where wavelengths reduce to mere millimeters. These ultra-high frequencies are essential in cutting-edge fields like 5G and 6G wireless networks and cutting-edge scientific research, as they enable precise, high-resolution signal generation for testing and development at the forefront of technology.