The JDSU ONT-503 Optical Payload Module is a high-speed optical network test component engineered for 40G, 43G, and 45G payload analysis. Deployed within the ONT-5xx modular test platform, this payload module delivers both unframed BER testing and framed SDH/SONET/OTN functional testing across optical and electrical interfaces. The platform integrates a 3-slot mainframe with 15-inch touchscreen, enabling portable lab and field deployment for transport network validation.
Technical Specifications
Optical Interface
• Wavelength range: 1530 nm to 1565 nm (transmitter and receiver)
• Transmitter output: 0 dBm to +3 dBm
• Receiver sensitivity: -5 dBm to +3 dBm
• Connector support: FC, SC, ST, LC, DIN
• ITU-T G.693 compliance
Payload Rates & BER Testing
• Supported rates: 40 Gb/s, 43 Gb/s, 45 Gb/s
• Unframed BER: 39.813 Gb/s and 43.018 Gb/s
• PRBS pattern generation and analysis
• Framed testing: SDH STM-256, SONET OC-768, OTN OTM0.3
Jitter & Wander Analysis
• Jitter measurement: peak, RMS, and phase hit
• Receiver accuracy: 15 mUI (qualifying designs)
• ITU-T O.172 Appendices VII/VIII and O.173 compliant
• Wander: TIE measurements with online MTIE/TDEV analysis
Clock & Synchronization
• Internal accuracy: ± 2 ppm
• Offset range: ± 50 ppm
• External reference synchronization from received signal or mainframe
• Reference clock output via SMA connector at line rate/64
Electrical Interface Options
• 40/43G jitter/wander testing capability
• CAUI-like interface via SMA pigtail for component-level debugging
Ethernet Testing
• 10GbE LAN/WAN Phy: 10.3 Gbps and 10 Gb/s
• Layer 2/3 traffic generation and filtering
• Packet jitter measurement (current, peak, average)
• Service disruption measurement
– Key Features
• Modular architecture supports mixed-signal testing across optical and electrical domains
• Alarm, error, overhead, and pointer generation for OTN/SDH/SONET validation
• Support for concatenated and fully structured framed signals
– Typical Applications
• Design conformance and acceptance testing for 40/45G transport equipment
• SDH/SONET/OTN interface characterization
• Jitter and wander compliance validation per ITU standards
• Field troubleshooting of high-speed optical networks
– Compatibility & Integration
The ONT-503 integrates into the ONT-5xx platform ecosystem, supporting modular configuration with optional electrical interface hardware for multi-domain testing.

















