GPIB-USB-HS
Manufacturers
NI
Other Recommendations
USB 2.0 to GPIB Controller, 7.2MB/s HS488 Speed, Plug-and-Play Control for 14 Instruments
⚡7.2MB/s
4x faster than standard mode (1.8MB/s) (Source: Input description)
🔌×14
Daisy-chain up to 14 GPIB instruments (Source: Input description)
💼
Compact size (120g) for laptop-based field testing (Source: Input description)
| Core Parameter | Specification | Application Value |
|---|---|---|
| Transfer Protocol | IEEE 488.1 standard (1.8MB/s) + HS488 (7.2MB/s) | Reduces calibration data transfer time by 75% (e.g., 100KB file in 14ms vs 56ms) |
| Device Capacity | Controls 14 instruments via daisy-chaining | Single-interface solution for multi-instrument test racks |
| System Compatibility | USB 2.0 high-speed (480Mbps), backward compatible with USB 1.x | Works with legacy laptops (USB 1.1) and modern workstations |
Core Application Scenarios
Mobile Calibration Station — Connect laptop to 14 field instruments (multimeters/power sensors) for on-site equipment calibration
Production Test Racks — Control multiple instruments (signal generators/analyzers) via single USB port, reducing cabling complexity
Technical Deep Dive
High-Speed Control Architecture
Features "USB 2.0 Interface + IEEE 488.2 Controller + HS488 Accelerator" design: Integrated protocol converter chip handles USB↔GPIB translation at 480Mbps (Source: USB 2.0 spec). HS488 mode bypasses standard handshaking delays through parallel command processing, achieving 7.2MB/s transfer speed. Built-in GPIB controller supports full IEEE 488.2 command set (SDC/GET/LLO etc.), enabling control of legacy instruments without internal controllers.
| Technical Dimension | GPIB-USB-HS | Traditional GPIB Card | Advantage |
|---|---|---|---|
| Portability | 120g, no external power required | PCIe card + external power supply (>500g) | 75% lighter for field service applications |
| Deployment Speed | Plug-and-play installation (<30 seconds) | Requires PC shutdown + card installation (>10 minutes) | 20x faster setup for urgent troubleshooting |
Field Calibration Workflow
Setup: Connect GPIB-USB-HS to laptop USB port, daisy-chain calibrator (Fluke 5520A), DMM (Keysight 34401A), power meter (Keysight E4418B)
Configuration:
- Load NI-488.2 drivers (Windows auto-install)
- Enable HS488 mode in control software
- Assign GPIB addresses (Calibrator:5, DMM:22, Power Meter:10)Execution:
- Send command: Calibrator output 10V DC → DMM measure voltage (9.999V)
- Verify power meter at 1GHz/-10dBm (accuracy ±0.02dB)
- Transfer calibration data at 7.2MB/s to databaseEfficiency: Complete 3-instrument calibration in 8 minutes (vs 15 minutes with standard GPIB)
Daisy-Chain Limitation
Total cable length >20m degrades HS488 performance (Based on GPIB electrical specs). Mitigation: ① Keep chain length <15m; ② For long-distance setups, use GPIB extenders (optical isolators) every 4 devices.
