- Overview
- All Models
- Support
Reliable wireless device evaluation in space-constrained environments
Keysight rack-mountable OTA test chambers deliver high-performance radiated testing in a compact, rack-ready form factor. Designed to meet the needs of wireless device developers working with 5G, Wi-Fi®, and other standards, these chambers combine highly effective shielding, precision positioning, and multi-angle test capabilities, all within a standardized 19-inch rack footprint. With options like the Keysight Mini Rack-Mountable Test Chamber (RMTC) for space-sensitive lab setups and the larger Keysight RMTC for expanded DUT sizes and test coverage, the portfolio offers flexible, scalable solutions for antenna performance, coexistence, and radiated spurious emission testing. Built for speed, reliability, and rack integration, these chambers help accelerate your OTA validation workflows. Need help selecting? Check out the resources below.
Compact footprint
Maximize lab space by integrating OTA testing into standard 19-inch racks without compromising performance or shielding.
Shielding effectiveness
Ensure accurate radiated measurements by minimizing interference with over 70 dB isolation across frequency ranges.
Precision positioning
Validate devices across sub-6 GHz, FR1, and mmWave FR2 bands using wideband feeds and optimized chamber designs for reliable performance.
Broad DUT compatibility
Support a wide range of device sizes and technologies with modular chamber designs and configurable antenna mounts.
-
Maximum angles of arrival
1
-
Frequency range
600 MHz to 8,000 MHz, 22 GHz to 50 GHz
-
Measurement type
Direct far field (DFF)
-
Maximum DUT weight
5 kg
-
Range length
0 to 0.78 m
-
Use cases
Protocol Verification, Protocol Acceptance, Functional, Performance
Most popular configurations
Mini Rack-Mountable Test Chamber
Rack-Mountable Test Chamber
Services and support
Innovate at speed with curated support plans and prioritized response and turn-around times.
Get predictable, lease-based subscriptions and full lifecycle management solutions—so you reach your business goals faster.
Experience elevated service as a KeysightCare subscriber to get committed technical response and more.
Ensure your test system performs to specification and meets local and global standards.
Make measurements quickly with in-house, instructor-led training, and eLearning.
Download Keysight software or update your software to the newest version.
Frequently asked questions
A rack-mountable over-the-air (OTA) chamber offers a compact, integrated solution for testing wireless devices without the space and cost requirements of a traditional walk-in anechoic chamber. Because it is designed to fit into a standard equipment rack, it can be installed directly alongside signal generators, analyzers, and other instruments in a lab bench or rack environment. This saves floor space and enables streamlined workflows where multiple chambers can be stacked or used in parallel.
These chambers are particularly valuable for testing small wireless devices, such as smartphones, IoT sensors, wearables, and modules, where the physical size of the device under test does not require a large chamber. They provide the same shielding and absorber-lined interior as larger chambers, but in a much more manageable form factor. By keeping the test environment close to the instruments, rack-mountable OTA chambers reduce cable lengths, minimize loss, and simplify integration into automated test setups. Compared to larger chambers, they also tend to have faster setup times and lower operational overhead, making them well-suited for production testing as well as R&D validation.
Shielding is critical in any OTA chamber, whether it is full-size or rack-mountable. The goal is to ensure that external signals, such as cellular, Wi-Fi, or Bluetooth traffic in the building, do not leak into the chamber and interfere with the measurements. At the same time, shielding prevents test signals generated inside the chamber from radiating outward and causing unintended interference with other equipment.
The level of shielding required depends on the frequency range and sensitivity of the device under test, but in general, shielding effectiveness of 80 to 100 decibels is desirable for wireless device testing. Rack-mountable chambers are designed with high-performance shielding materials, absorbers, and RF-tight door seals to achieve this level of isolation. When properly specified and installed, they can deliver the same shielding performance as larger chambers, ensuring that measurements reflect only the controlled test conditions.
In compact rack-mountable chambers, devices under test are often mounted on small positioners or rotation stages that allow controlled changes in orientation. This is important because antenna performance and wireless throughput can vary depending on how the device is held or positioned relative to the test probes or antennas.
For smaller devices, two-axis positioners can provide tilt and rotation, enabling the chamber to capture performance across different angles without requiring a large spherical setup. Some rack-mountable systems also allow quick manual repositioning using removable device fixtures, which is useful in production testing where speed and repeatability are critical.
While the test volume inside a rack-mountable chamber is smaller than that of a walk-in facility, the quiet zone is carefully designed to be uniform enough for reliable characterization of compact devices. By combining shielding, absorber layout, and positioner control, these chambers provide a practical way to replicate real-world usage conditions within a compact footprint.