Chapter 1 - Notes on use and Safety Chapter 1 Notes on use and safety Notes and warnings in line with DIN 57 411 Part 1a/VDE 0411 Part 1a: Notes on use Mechanical effects on/interference with the display must be avoided, otherwise it could be destroyed.
Chapter 2 - Technical Data Chapter 2 Technical data LCD illuminated, 120x32 pixel DISPLAY MEASUREMENT RANGE 0 to 2.000m Scale latitude adjustable 50m 100m 400m Resolution 0.25m 0.5m 1.0m 4.0m Accuracy ± 1% of set measurement range Shortening factor 0.250 to 0.999 Pulse amplifier 0 –...
Chapter 3 - Startup Chapter 3 Startup Technical description The instrument is a lightweight, compact, microprocessorized unit with an LCD display for troubleshooting and inspecting TV/SAT cable installations, communication and power lines. 3.1.1 Basics of pulse reflectometry Pulse reflectometry (time domain reflectometer) is a modern application of tried and tested pulse reflection measurement technology, which for many years already has proved to be a valuable aid for troubleshooting transmission lines.
Chapter 3 - Startup Operation Key 1 (LEFT) = DOWN Key 2 (CENTER) = UP Key 3 (RIGHT) = MODE POWER ON Press key 1. When you press the button, the instrument name and software button are displayed briefly, and then the battery voltage is shown for 5 seconds.
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Chapter 3 - Startup DETERMINE SHORTENING Connect a cable (eg 10 or 100 m). FACTOR OF CABLE Set the cursor to the cable length and alter the shortening factor until the pulse echo is behind the cursor. CHANGING THE SAVED CABLE Press keys 1 and 2 simultaneously for 5 seconds until the TYPES cable types are displayed.
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Chapter 3 - Startup FOULT LOCATION Position the cursor on the start of the pulse and read the length of the cable. If a fault-free cable is terminated with a resistance identical to the wave resistance of the cable, no reflection is observed. If there are interruptions, contact defects on joints, pinches, shorts or branches/splitters in the region investigated, the length to the beginning of the cable can be determined from the...
Appendix Appendix Cable types Delivery condition – Stored in EEPROM. Program Cable type Cable diameter Type of Shortening Cable loss over position name dielectric factor 50 MHz at 100m Inner Dielektric conductor Mini cable 0.41 mm 1.90 mm 0.78 10.9 dB H 123 0.65 mm 2.90 mm...
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