The Photon Kinetics GN Nettest 7500 Optical Time Domain Reflectometer (OTDR) with 747S module is a portable instrument for testing and troubleshooting optical fiber networks. It transmits light pulses into fiber and measures reflected light intensity and timing to characterize fiber properties, determine length and attenuation, quantify splice loss, and locate fiber breaks. The instrument suits telecom, CATV, LAN, and manufacturing environments.
Technical Specifications
Dynamic Range: Greater than 32 dB
Dead Zones:
• Attenuation dead zone: 20 m
• Event dead zone: 5 m
• Virtual zero dead zone capability with visual fault locator option
Display: 9.4-inch VGA LCD screen
Data Storage: 3.5-inch floppy drive, 1.44 MB capacity per disk
Power: Standard AC/DC adapter with internal Nickel Metal Hydride battery pack providing up to 4 hours of operation
– Key Features
• Fiber length measurement
• Attenuation quantification (dB/km)
• Splice loss detection
• Fiber break identification
• Fresnel and backscatter reflection measurements
• Loss Table generation for rapid attenuation and length calculations
• Auto Test function for simplified measurements
• Single-mode and multimode optical module support
– Typical Applications
Ideal for long trunk and interoffice fiber span testing. Short dead zones enable measurement of closely spaced features. Portable battery-powered design supports field deployment in diverse network environments.
– Compatibility & Integration
Supports multiple optical module configurations. Optional accessories include power meter, light source, and visual fault locator. Data export via 3.5-inch floppy disk.
