Tektronix 1502C
Metallic Cable Testers
Description
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.
Key Points
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
Specifications
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.).
