The TEKTRONIX 1503C is a metallic Time Domain Reflectometer (TDR) designed for precise fault identification and localization in cable infrastructure. By transmitting a signal and analyzing reflections, it determines distance to and nature of cable imperfections—breaks, shorts, open circuits, and impedance mismatches. The instrument enables rapid diagnosis of telecommunications, electrical, and data network cabling systems, minimizing downtime and maintaining transmission line integrity.
– Technical Specifications
TDR Performance
• Waveform generation: Step, Pulse, or optional Ramp
• Output impedance: 50 Ω or 75 Ω selectable
• Output amplitude: 2 V typical
• Pulse width: 100 ns typical
• Step rise time: <10 ns typical
• Measurement range: Up to 10,000 feet (3048 m) depending on cable type and conditions
• Fault location accuracy: Typically ±1% of cable length
• Velocity of Propagation (Vp): Continuously adjustable for various cable types
• Distance measurement units: Feet or Meters selectable
Electrical Characteristics
• Power requirements: 100–132 VAC or 200–264 VAC, 50/60 Hz
• Power consumption: Approximately 30 VA
• Battery operation: Internal rechargeable battery pack for portable use
Interfaces
• TDR connectors: BNC or coaxial connectors
• Power input: Standard AC power connector
• Auxiliary ports: Optional external triggering and data output (configuration dependent)
Display and Controls
• Display: Monochrome CRT or LCD (model dependent)
• Calibrated graticule for distance and amplitude measurements
• Front-panel controls for parameter adjustment and menu navigation
• Real-time TDR waveform display showing transmitted signal and reflections
– Key Features
• Selectable 50 Ω or 75 Ω output impedance for compatibility with various cable systems
• Continuous Vp adjustment accommodates diverse cable types and propagation characteristics
• Portable battery-powered operation for field deployment
• Dual voltage input (100–132 VAC / 200–264 VAC, 50/60 Hz) supports global use
• Flexible waveform selection—Step, Pulse, or Ramp—for optimized fault detection across cable lengths
– Typical Applications
• Telecommunications cable installation and maintenance
• Electrical power distribution system troubleshooting
• Data network cabling diagnostics
• Field cable fault localization and characterization
– Compatibility & Integration
The 1503C interfaces via standard BNC and coaxial connectors, supporting integration into existing test environments. AC mains power or internal battery operation provides flexibility for benchtop and field use.
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