Modern RF Test Solutions: Four Featured Vaunix Lab Brick Products for Multi-Channel Workflows

RF engineers working on multi-channel systems, phased arrays, and automated verification often look for tools that reduce setup time and behave consistently under software control. Vaunix develops compact RF test solutions that support repeatable measurements, predictable automation, and flexible integration into R&D or ATE platforms. The Lab Brick® family was created to simplify the testing process by providing programmable hardware designed for dependable performance.

 

This overview features four Lab Brick products - the LPS-402-8, VMNA-7250-9, LMS-802DX, and LSW-802P8T - and describes how they fit into modern RF and microwave workflows.

 

Overview of Four RF Test Solutions

 

Key Takeaways

• Programmable RF test equipment supports repeatable measurements and reduces bench complexity for multi-channel RF testing.
• USB and Ethernet control provides consistent software behavior across phase, routing, attenuation, and signal-generation tools.
• Compact microwave test tools help engineers expand capability without increasing footprint or setup requirements.
• The four Vaunix Lab Brick products featured here support calibration, mesh-network modeling, signal generation, and multi-path routing.

 

Featured Vaunix Lab Brick RF Test Solutions

 

LPS-402-8: 2-4 GHz Programmable Phase Shifter for Multi-Channel RF Testing

 

The LPS-402-8 provides eight independently controlled phase channels with 1° resolution across a full 360° range. Engineers working on phased-array antennas, beam-steering experiments, and multi-channel calibration can align signal paths with consistency and minimal drift. As programmable RF test equipment, the device supports both GUI-driven control and automation scripts through USB or Ethernet. Those evaluating similar tools in this category can explore the Vaunix line of Phase Shifters for additional multi-channel control options.

 

Key Specifications

• Frequency range: 2.0-4.0 GHz
• Eight programmable channels
• 1° step size, 360° range
• Phase accuracy: ±2.5°
• USB/Ethernet control
• Windows GUI, Linux drivers, LabVIEW examples
• Compact single-unit form factor

 

Use Cases

• Phased-array antenna calibration
• Beam-forming algorithm development
• Multi-channel synchronization
• OTA channel simulation
• Automated phase-sweep experiments

 

Engineering Insight: Traditional phase-control setups often involve bulky equipment or dedicated hardware paths. The LPS-402-8 was designed to offer precise, software-driven phase adjustment in a compact format, helping teams streamline multi-channel calibration and phased-array development without relying on large, specialized instruments.

 

VMNA-7250-9: 9-Port Mesh Network Attenuator for Wireless and Multi-Node Testing

 

The VMNA-7250-9 supports engineers working on wireless coexistence studies, mesh architectures, and dense multi-node environments. With nine RF ports forming 36 programmable attenuation paths, the device maintains consistent performance across the 700-7250 MHz range. Modeling distance, interference, congestion, and neighbor effects becomes far more controllable compared with unpredictable open-air setups. For broader configuration needs, the Vaunix line of Mesh Network Attenuators offers additional multi-port options designed for complex wireless testing.

 

Key Specifications

• Frequency range: 700-7250 MHz
• 36 signal-path combinations
• 0-100 dB attenuation range
• 1 dB step size
• USB control
• Windows and Linux SDK
• 2RU rackmount chassis

 

Use Cases

• Wi-Fi, LTE, and 5G multi-node evaluations
• Mesh-network performance modeling
• Interference and coexistence testing
• SDR wireless prototyping
• Automated handover measurements

 

Engineering Insight: Wireless coexistence and multi-node behavior are difficult to evaluate when relying on open-air conditions. The VMNA-7250-9 provides controlled path loss between nodes, making it possible to create repeatable fading, congestion, and interference scenarios for a wide range of mesh and multi-link architectures.

 

LMS-802DX: 2-8 GHz Programmable Signal Generator for Microwave Test Tools

 

The LMS-802DX delivers CW signals, linear sweeps, stepped sweeps, and optional pulse modulation across the 2-8 GHz band. Many teams rely on it for component characterization, receiver evaluation, and automated verification. Its compact design makes it a practical addition to microwave test tools already deployed in ATE environments. USB programmability enables direct integration into scripted workflows. Those building out their bench setups can also review the Vaunix family of Signal Generators for additional frequency ranges and output capabilities.

 

Key Specifications

• Frequency range: 2.0-8.0 GHz
• Output power: -80 to +10 dBm
• 100 Hz resolution
• Linear and stepped sweeps
• Optional pulse modulation
• Sweep trigger capability
• Windows API DLL, Linux drivers, LabVIEW examples

 

Use Cases

• Filter, mixer, LNA, and subsystem testing
• Receiver sensitivity validation
• Wi-Fi, LTE, radar, and sub-6 GHz studies
• Production-line signal stimulation
• Automated swept-frequency measurement

 

Engineering Insight: Many labs need portable signal sources that perform reliably in automated environments. The LMS-802DX was built to offer stable output, flexible sweep modes, and predictable USB control so teams can generate accurate stimulus signals without depending on full-size rackmount equipment.

 

LSW-802P8T: Absorptive Phase-Matched SP8T Switch for Multi-Channel Routing

 

The LSW-802P8T provides absorptive switching across eight paths with phase-matched outputs and high isolation. Multi-channel RF testing setups often depend on precise routing between fixtures, antennas, or calibration paths, and the switch maintains consistent behavior across all positions. USB and Ethernet control allow it to operate in both benchtop measurements and automated RF test solutions. Those interested in additional routing architectures can review the Vaunix portfolio of RF Switches for a range of SPDT, SP4T, and SP8T configurations.

 

Key Specifications

• Frequency range: 100-8000 MHz
• SP8T, absorptive
• Insertion loss: 1.0-4.75 dB
• Isolation: up to 80 dB
• Phase-matched outputs
• USB or 1000BASE-T Ethernet
• Windows and Linux drivers

 

Use Cases

• MIMO and phased-array routing
• Multi-fixture switching
• Automated test sequences
• Antenna path selection
• High-isolation laboratory setups

 

Engineering Insight: Multi-path routing requires consistent behavior across every switch position to maintain measurement integrity. The LSW-802P8T was engineered with phase-matched outputs, tight loss performance, and high isolation to support both benchtop measurements and automated RF test environments.

 

Coordinating RF Test Solutions for Multi-Channel Workflows

 

Many engineering teams combine several Lab Brick devices into unified, software-controlled testbeds. This approach supports multi-channel RF testing without the footprint or complexity of traditional racks.

 

A common configuration includes:

 

1. Stimulus Generation
   The LMS-802DX supplies CW, swept, or pulsed signals.
2. Path Routing
   The LSW-802P8T directs signals to antennas, fixtures, or subsystems.
3. Phase Alignment
   The LPS-402-8 aligns paths for phased-array studies or multi-channel calibration.
4. Programmable Attenuation
   The VMNA-7250-9 models distance, fading, and interference across nodes.

 

Together, these RF test solutions create flexible setups for OTA research, mesh handover analysis, calibration, and beam-forming, all within software-driven frameworks.

 

Scalable Microwave Test Tools for Automated Engineering Workflows

 

Multi-device RF environments continue to grow in complexity as systems incorporate more antennas, more paths, and more dynamic operating conditions. Programmable RF test equipment that supports multi-channel coordination gives engineers a practical way to expand test coverage without adding bulk or increasing setup time. The four Vaunix Lab Brick devices featured here help teams scale efficiently while maintaining predictable control and repeatable measurements.

 

Contact Us at Vaunix

 

Explore the full range of Vaunix RF test solutions for signal generation, routing, phase control, and attenuation. Contact us today.

 

FAQ About RF Test Solutions and Programmable RF Tools

 

What advantages do programmable RF test equipment offer?

USB/Ethernet-controlled devices provide consistent APIs and interfaces, making integration into automated test equipment, production testing, and R&D systems straightforward.

 

Can Vaunix products support multi-channel RF testing?

Yes. Devices such as the LPS-402-8 phase shifter and LSW-802P8T switch are frequently used in phased-array, OTA, and synchronized multi-path test setups.

 

Are Lab Brick tools compatible with Linux?

Most Vaunix products include Linux-compatible drivers and examples, allowing integration with Python, command-line scripts, and custom workflows.

 

How does a mesh attenuator help model wireless behavior?

Tools such as the VMNA-7250-9 allow controlled adjustments in attenuation, making it possible to evaluate multi-node connectivity, interference, and coexistence under repeatable conditions.

 

What types of RF test solutions can be automated?

Phase control, signal generation, attenuation, and routing can all be automated using the APIs and drivers included with Vaunix Lab Bricks.

 

Reading tip: everythingRF's interview with Scott Blanchard

 

Scott Blanchard is an RF/microwave engineer with more than 30 years of experience designing radio systems, RF components, and wireless infrastructure. Before founding Vaunix, he held key engineering and leadership roles at Motorola, Advanced Techcom, and Nera Networks. Scott's vision for compact, programmable Lab Brick® test products and flexible rackmount solutions has helped transform how R&D labs and production facilities approach automated RF testing. He holds a BSEE from the University of Colorado and continues to lead Vaunix's product development and technology strategy.