The Tektronix ST2400 SDH/SONET Test Set is a high-speed telecommunications instrument for installation, maintenance, and troubleshooting of SDH STM-16 and SONET OC-48 networks operating at 2.488 Gbit/s. Available in Transceiver, Transmit-Only, and Receive-Only configurations, it delivers flexible deployment for DWDM and non-DWDM applications. Payload-independent architecture supports multiple mappings including VC-3, VC-4, VC-4-4c, and VT-12, with capability to test STM-64 and OC-192 systems when integrated with external equipment.
Technical Specifications
• Data Rate: 2.488 Gbit/s
• Standards: SDH STM-16, SONET OC-48
• Configurations: Transceiver (transmit/receive), Transmit-Only, Receive-Only
• Operating Modes: Stand-Alone (internal test signal generation), Add/Drop (external tributary insertion at 155 or 622 Mbps), Through (signal regeneration with fault simulation)
• External Clock References: 1.544 Mbps, 2 Mbps, 2 MHz
• Optical Wavelengths: 1550 nm (low-dispersion long-reach option), 1310 nm or 1550 nm (dual wavelength selectable via software)
• Electrical Interfaces: 2.488 Gbps clock and data input/output; 155/622 Mbps optical and electrical add/drop tributary interfaces (Transceiver configuration)
– Key Features
• Error and defect injection—continuous, single-shot, or repetitive modes with variable duration and interval
• Payload independence enables VC-3, VC-4, VC-4-4c, and VT-12 mapping support
• Switchable SDH/SONET functionality within single instrument
• Parallel multi-channel testing for high-capacity DWDM systems
• Signal regeneration in Through mode; simulates network fault conditions
• Internal or external clock selection for timing control
– Typical Applications
• DWDM client system testing and validation at 2.488 Gbps
• Framing synchronization and protection switching verification
• Interoperability diagnosis and network troubleshooting
• Tributary signal extraction and path-level analysis via Add/Drop mode
• Installation and acceptance testing of high-speed optical networks
– Compatibility & Integration
Payload-independent design preserves investment in existing 155 Mbps and 622 Mbps test equipment. Supports integration with external test sets for comprehensive STM-64 and OC-192 validation. Dual wavelength option accommodates hybrid network installations requiring 1310 nm or 1550 nm operation.
