VBOX 4 Data Logger-Dual Antenna
VBOX 4 Dual Antenna
- Data update rate: 100 Hz
- Position accuracy (RMS): horizontally 5 mm, vertically 10 mm (RTK)
- Velocity accuracy: 0.1 km/h
- Distance accuracy: 0.05% (eq. to ±1.8 cm braking accuracy)
- Communication interfaces: Ethernet, RS232, USB, Bluetooth
- Signal inputs: 2x CAN FD, 1x standard CAN, 4x analog inputs
- Storage: supports large-capacity SD card
- Input voltage rate: 7 – 30 V DC
- Operating temperature: -20°C to +70°C
- The advanced dual-antenna configuration locks onto the vehicle's true centerline axis even during dynamic lateral drifting or when completely stationary. This cutting-edge hardware architecture solution for direct, precise body slip angle measurement.
When testing requirements advance from basic velocity and distance metrics to complex handling and stability analysis, the VBOX 4 Dual Antenna system becomes the definitive choice for top-tier chassis engineers worldwide.
By leveraging carrier-phase differential measurements between two distinct GNSS points, the system instantly benchmarks the vehicle's true longitudinal axis. This unlocks critical attitude and slip data that traditional single-antenna configurations simply cannot capture.

Why Dual Antenna?
During high-dynamic maneuvers—such as slalom or lane-change testing—a vehicle's heading (the direction the nose is pointing) rarely aligns with its course (the actual trajectory of travel).
While standard single-antenna systems are physically limited to tracking the trajectory alone, the VBOX 4 Dual Antenna system simultaneously locks onto both vectors. By bridging this gap, it continuously computes critical dynamic parameters that are otherwise impossible to measure.

Core Technical Features
1. Heading Lock at Absolute Zero Speed (Static Heading)
Eliminate the need for vehicle motion. The system leverages the physical alignment of the dual-antenna baseline to instantly output a precise true heading while completely stationary. This capability is paramount for the initial calibration of driving robots and low-speed maneuver testing.
1. Handling Precision: Direct Body Slip Angle Measurement
Body slip angle is the definitive metric for evaluating tire grip thresholds and chassis handling limits. By calculating the instantaneous offset between the vehicle's longitudinal axis and its movement vector, the system delivers real-time slip angle data with a superior accuracy of 0.2°—serving as the industry gold standard for ESC/ESP system development.
1. Full-Dimensional Attitude: Precision Pitch & Roll Tracking
Depending on antenna placement (longitudinal or lateral orientation), VBOX 4 directly measures vehicle pitch (dive during hard braking/acceleration) and roll (body lean during high-G cornering). With a blistering 100 Hz update rate, the system captures even the most transient suspension responses.
1. Uncompromised Signal Coverage: Dual-Antenna & IMU Integration
Fusing dual-antenna technology with an advanced, built-in Internal Measurement Unit (IMU), the system ensures flawless data continuity and zero drift. Even under extreme testing conditions—such as stationary drifting, high-speed spins, or donuts—the coordinate grid and vehicle attitude remain completely uninterrupted.
Primary Application Areas
Vehicle Dynamics & Handling Analysis: Evaluates chassis tuning optimizations and quantifies understeer or oversteer phenomena during high-G maneuvers.
Tire Performance & Compound Development: Analyzes tire behavioral profiles under extreme lateral forces across varying inflation pressures and rubber compounds.
ESC / ESP System Verification & Tuning: Monitors real-time vehicle trajectory correction and body attitude stabilization following active safety system intervention.
Specialized Vehicle R&D & Motion Control: Delivers precise attitude and positional feedback tailored for autonomous buses, agricultural machinery, and airport ground support equipment (GSE).
Companion Software & Analytics
The VBOX 4 operates in perfect synergy with VBOX Test Suite, our premier analysis software. Designed to transform raw data into actionable insights, it features an intuitive data visualization interface and one-click report generation capabilities.
Equipped with a comprehensive library of pre-configured plugins that fully comply with international standards, including Euro NCAP and ISO protocols.
Drastically reduces post-processing timelines by automating complex calculations, allowing engineering teams to focus on validation rather than data formatting.

Quick Specification Matrix