Lineeye Co Ltd
Lineeye LE-650H2-A Advanced USB 2.0 Protocol Analyzer
Lineeye LE-650H2-A Advanced USB 2.0 Protocol Analyzer
SKU: LE-650H2-A
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Key Features
Overview
Professional USB 2.0 Protocol Analysis with Advanced Features
The Lineeye LE-650H2-A represents the premium tier of USB protocol analyzers, delivering comprehensive analysis capabilities for USB 2.0 development and debugging. This hardware-based analyzer excels at capturing large volumes of USB data whilst providing real-time visibility into communication patterns and power consumption.
Recording up to 40GB of measurement data directly to your PC's HDD or SSD, the LE-650H2-A enables extended monitoring sessions essential for intermittent fault diagnosis. The analyzer automatically detects High/Full/Low speed USB 2.0/1.1 communications and begins measurement with a simple spacebar press, making it accessible for engineers at all experience levels.
Enhanced Analysis Capabilities
Unlike its standard counterpart the LE-650H2, the LE-650H2-A offers quadruple the storage capacity and high-speed VBUS logger functionality. The device provides detailed class-level decoding for multiple USB device classes including Mass Storage, HID, Audio, and Communication devices.
The compact aluminium housing reduces electromagnetic interference whilst maintaining portability. For engineers developing USB devices, host controllers, or embedded systems, the LE-650H2-A delivers the analysis depth required to identify timing issues, protocol violations, and power consumption anomalies that software-based analyzers typically miss.
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Why Engineers Choose The Lineeye LE-650H2-A Advanced USB 2.0 Protocol Analyzer
Superior Long-Term Analysis Capability
Comprehensive Power Analysis Integration
Professional Hardware-Based Reliability
While recording 480Mbps high-speed transfer data of USB 2.0 to the hard disk of the PC via a large capacity memory of LE-650H2-A, displays the contents of that data on the screen of the PC in detail at real time. It can identify PING and the split transaction at high speed.
Questions and Answers
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What Trigger and Filter Options Are Available on the LE-650H2-A?
The LE-650H2-A can trigger on:
- Specific addresses/endpoints
- Packet types
- Errors (CRC/PID)
- Data patterns up to 8 bytes
- Bus states (Reset, Suspend, Disconnect)
- External signals
- VBUS voltage/current thresholds
It can run up to 16 sequential trigger actions, including measurement stop and external trigger output. Filters let you selectively record and display SOF, IN-NAK, OUT-NAK, SETUP-NAK and PING packets for multiple address/endpoint combinations.
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Does the LE-650H2-A Work with USB 3.0 Devices and Connections?
No, not at USB 3.0 speeds. The LE-650H2-A is a USB 2.0 analyser supporting High-Speed (480Mbps), Full-Speed (12Mbps) and Low-Speed (1.5Mbps). Many USB 3.0 devices also work at USB 2.0, but the analyser cannot capture SuperSpeed USB 3.0 traffic. For USB 3.0, see our USB 3.0 protocol analysers.
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What External Connectivity Options Does the LE-650H2-A Provide?
The analyser has 4 external trigger inputs and 4 external trigger outputs on a 10-pin connector (TTL/LVTTL levels). Use them to synchronise with oscilloscopes, logic analysers and other test equipment, and to correlate USB events with external system behaviour.
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How Easy Is It to Set Up and Use the LE-650H2-A for First-Time Users?
Setup is simple. Connect the analyser between your USB host and device, install the supplied PC software and press the space bar to start measuring. It detects the USB speed automatically. The software parses packets, colour-codes them by type and has extensive search functions for finding events in captured data.
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What Technical Support and Documentation Is Available for the LE-650H2-A?
Lineeye provides an instruction manual, an installation manual and online help, and the Windows software also works as a free log viewer. Debug Store also offers technical support and advice on configuring the analyser for your USB development needs.
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What Makes the LE-650H2-A Different From Software-Based USB Analyzers?
The LE-650H2-A is a hardware analyser connected in line with the bus, so capture doesn't depend on software running on the system under test. A PC runs the control software and stores the log.
Software-only analysers run in the host's USB driver stack and cannot see bus-level events. The LE-650H2-A captures events such as bus reset, suspend and disconnect, with 16.7ns timestamps, which helps when debugging host controller issues and embedded USB implementations.
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How Does the 40GB Recording Capacity Benefit USB Development Projects?
40GB lets you record long USB sessions, hours or days depending on traffic, to find intermittent faults and rare communication failures. Data streams to your PC's HDD or SSD in files of up to 2GB each, with a ring buffer of up to 20 files available.
If the 128MB capture buffer fills, packets are discarded, so filter out packets you don't need, such as SOF and NAK, for long captures.
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What USB Device Classes Does the LE-650H2-A Decode Automatically?
The analyser decodes these classes in detail:
- Mass Storage (SCSI, ATAPI, SFF-8070i)
- Human Interface Device (HID)
- Audio
- Video
- Communication (CDC)
- Hub
- Printer
- USBTMC
- Still image and media transfer (PTP/MTP)
- Wireless controller (Bluetooth HCI dongles)
It also decodes standard USB descriptors and device requests, and shows them in readable form rather than raw hexadecimal.
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Can the LE-650H2-A Monitor VBUS Power Consumption in Real Time?
Yes. Built-in VBUS measurement covers voltage (0 to 8V) and current (-0.9A to 1A), both with ±1% of full scale accuracy. VBUS logger mode records at intervals from 0.1ms to 1s and stores up to 2GB of power data. You can match power consumption to specific USB events and track down power-related issues.
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