The WANDEL & GOLTERMANN ANT-20E is a modular network analyzer and signal generator engineered for jitter and wander characterization in high-speed SDH/SONET systems. It generates and analyzes jitter across data rates from 64 kbit/s to 2.5 Gbit/s (STM-16/OC-48), compliant with ITU-T Recommendations O.171 and O.172. The instrument combines electrical and optical interfaces with a full-color touchscreen and embedded Windows-based PC for test automation and real-time signal analysis.
Technical Specifications
• Data rate range: 64 kbit/s to 2.5 Gbit/s (2488 Mbit/s STM-16/OC-48)
• Multi-rate support: DS1 to OC-192c and E1 to STM-64c
• Jitter/wander generation and analysis up to 2.5 Gbit/s
• Output jitter, maximum tolerable jitter (MTJ), and jitter transfer function (JTF) measurement
• Mapping and pointer jitter analysis
• Peak-to-peak jitter measurement
• MTIE and TDEV analysis
• Test pattern generation: PRBS sequences (2^11-1, 2^15-1, 2^20-1, 2^23-1) with inverted variants
• Error insertion: bit errors, single error, or error ratio modes
• Alarm generation: AU-AIS, AIS-C1 through C16, AU-LOP, LOP-C1 through C16
– Key Features
• Dual electrical/optical interface architecture supporting STM-16c/OC-48c electrical and STM-64/OC-192 optical signals
• Signal structure analysis down to lowest layers at 2.5 Gbit/s
• Performance analysis per G.826, G.821, M.2100
• Overhead analysis: SOH/TOH capture and analysis
• ATM broadband analyzer/generator with QoS testing for SVC and PVC
• Bit error rate testing (BERT)
• Automatic Protection Switching (APS) measurement and switch-over time analysis
• Trouble Scan for sequential channel testing
• Remote control via V.24, GPIB, Ethernet, and RS-232
– Typical Applications
• STM-16/OC-48 interface jitter characterization
• PDH to SDH/SONET mapping validation
• ATM network performance qualification
• Development and production testing of high-speed optical systems
• Field troubleshooting and installation verification
– Compatibility & Integration
Supports PDH (1.5 Mbit/s to 2.5 Gbit/s), SONET/SDH, and ATM protocols. Modular construction enables customization via optional modules including O.172 Jitter Generator/Analyzer (Option BN 3035/90.88) and O.172 Wander Analyzer (Option BN 3035/90.89).
