The Digital Lightwave NIC NXG NL81B is a portable network analyzer module for testing Ethernet, Fibre Channel, OTN, SONET/SDH, and PDH/DSn networks. It delivers comprehensive protocol analysis, service verification, fault location, and performance monitoring across 10/100/1000BASE-T and 10 Gigabit Ethernet optical interfaces. The modular platform scales with network demands through flexible software/firmware architecture and supports optional plug-in modules for specialized testing.
Technical Specifications
• Interfaces: 10/100/1000BASE-T network interface, 10 Gigabit Ethernet optical port, 10G to 52M SONET/SDH Optical/Electrical module (N41B), 1550nm Pluggable Laser SFP-LR2, 1310nm Pluggable Laser XFP-SR
• Display: 10.4 in (NIC) or 12.1 in (NIC+) high-resolution color touch screen with anti-glare coating
• Clock Reference: Internal Stratum 3, with BITS/SETS/2.048MHz Bantam/BNC clock in and clock out
• Storage: Removable industrial-grade Compact Flash module for OS
• Connectivity: 3x USB ports, SD/SDHC slot, external VGA display port (DE-15), trigger in/out, optional 802.11 wireless via USB
• Automation: SCPI command support with remote GUI client and VNC access
• Power Input: 90-264 VAC, 50-60 Hz; Power dissipation 150 W (NIC) / 350 W (NIC+)
• Operating Temperature: 0°C to +40°C
• Storage Temperature: -40°C to +85°C
• Humidity: 5% to 95%, non-condensing
• Emissions: EN 55022 Class B (conducted and radiated)
– Key Features
• Dual-form-factor design: NIC (5.0-5.6 kg) and NIC+ (6.5-11.34 kg) with corresponding display and power options
• Modular architecture supporting field-swappable optical/electrical modules
• Integrated clock reference with BITS/SETS compatibility for telecom synchronization
• Multi-technology support spans legacy PDH through 10 Gigabit Ethernet
• Class 1 laser devices; requires dust caps on unterminated optical ports
– Typical Applications
• Service activation and troubleshooting on carrier-grade networks
• Protocol and performance analysis for multi-layer network stacks
• Jitter measurement and synchronization validation
• Field testing of Ethernet, Fibre Channel, and optical transport systems
– Compatibility & Integration
The modular architecture accommodates optional test modules including 2.66 to 155M optical jitter analysis. Soft carrying case standard; water-resistant hard case available.


















