The Tektronix ORR24 is a precision optical-to-electrical converter designed for SDH/SONET systems operating at 2.488 Gb/s (STM-16/OC-48). This optical reference receiver transforms calibrated optical signals into low-noise electrical outputs, enabling accurate characterization of optical transmitters, receivers, and transmission links. The instrument delivers high-gain amplification with DC coupling, supporting extinction ratio measurements and eye-pattern analysis essential for compliance testing. Its 4th Order Bessel-Thompson frequency response and polarization-independent design ensure repeatable measurements across the 1100 nm to 1650 nm wavelength range.
Technical Specifications
Optical Interface
• Input connector: FC/PC
• Wavelength range: 1100 nm to 1650 nm
• Optical return loss: >30 dB minimum (>45 dB with PC mating fiber)
• Polarization dependence: 20 dB
• Coupling: DC coupled
Performance Characteristics
• Data rate: 2.488 Gb/s
• Bandwidth: DC to 2.0 GHz
• Frequency response: 4th Order Bessel-Thompson
• Standards compliance: SDH/SONET, ITU-T G.957
– Key Features
• High-gain, low-noise amplified design for accurate measurements
• DC coupling enables extinction ratio characterization
• Wavelength range covers C-band and extended infrared regions
• >30 dB optical return loss with standard PC connectors
– Typical Applications
• Compliance testing of SDH/SONET optical transmission products
• Optical transmitter and receiver characterization
• Eye-pattern and pulse shape measurements
• Extinction ratio analysis
– Compatibility & Integration
The ORR24 functions as a plug-in module for Tektronix 11800 Series Digital Sampling Oscilloscopes and CSA 803 Communications Signal Analyzers. Recommended configuration includes the SD-22 sampling head with 015-0560-00 cable for OC-48 compliance testing. Optional external power supply (016-1609-00) enables stand-alone operation. Module dimensions: 132 mm × 216 mm × 44 mm; weight: 1.5 kg.
