1503

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The Tektronix 1503 is a sinusoidal TDR cable tester with a similar design to the 1502B/C step-pulse TDRs.

The 1503 transmits a 5 V half-sine pulse of selectable duration, allowing an operator to examine up to 50,000 feet of cable.

Standard accessories in the 1503C (and others?) include SLA battery and which makes it quite heavy. The YT-1 Chart Recorder is also heavily constructed.

1500C series

• Test Signal - Step rise.
• Amplitude - 300 mV nominal into 50 Ω load.
• System Risetime - 10% to 90%, 200 ps (1.15 in./2.92 cm).
• Output Impedance - 50 Ω.
• Electrostatic Discharge Protection - 1 kV/500 pF/1 kΩ.
• Maximum Range - 2,000 ft. (625 m).
• Distance Readout Resolution - 0.05 in. (0.12 cm).
• Noise Filtering - 1 to 128 averages.
• Vertical Scale - 0.5 mp/div to 500 mp/div.
• Vertical Accuracy - ±3% full scale.
• Distance/Division - 0.1 ft./div to 200 ft./div (0.025 m/div to 50 m/div).
• Horizontal Accuracy - 1.6 inches (0.041 m) or ±1% of measured distance plus uncertainty in Vp, whichever is greater (for Vp = 0.66 and Dist/Div = 1 ft.)

Series Features & Benefits

• Backlit LCD Display Assures Sharp Images in Any Lighting Condition
• Menu-driven Operation for Easy Test Set-up
• Help Screens Provide Information on Instrument Operation and Measurements
• Information Screens Provide Cable Impedance and Vp Values
• Digital Filtering Reduces Displayed Noise, Resulting in a Cleaner Waveform Display
• Vertical and Horizontal Delta Modes Allow Easy Delta Measurements
• Waveform Storage Allows Comparison of the Current and Previously Recorded Waveform
• Ω at Cursor Allows Direct Readout of Characteristic Impedance
• Rugged and Portable - Designed for Field Use
• Optional Chart Recorder Provides Hard Copies of Results

Applications

• Telephony
• Computer/LAN
• CATV
• Power Companies
• Agriculture
• PCB Manufacturers
• Cable Manufacturers
• Airlines

The 1500C Series is designed to quickly and easily locate opens, shorts, crimps, and other defects in metallic cables. The 1502C can measure up to 2,000 feet (625 meters).

Using a process similar to radar, the 1500C Series transmits electrical pulses down the cable under test. Impedance changes in the cable reflect some of the pulse energy back to the MTDR. The reflections are displayed on a backlit, HyperTwist, high-contrast nematic LCD display. The characteristics of the displayed trace allow the user to determine the nature of the cable fault.

When testing 50 Ω cable with a Vp of 0.66, the 1502C allows the determination of 0.5 Ω cable faults. Multiple faults can be measured as close as 0.8 inch. The 1502C measures 50 Ω impedance.

Typical Cable Measurements

• Distance to faults
• Cable propagation velocity
• Cable return loss in dB
• Faulty taps and unterminated line in LAN and CATV networks

Key Specifications

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Pictures

1503

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  1503

1503C

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  1503C

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  1503C

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