Tools & Equipment Operation Flashcards

A technician uses a fusion splicer and the splice loss reads 0.35 dB, which exceeds the acceptable limit of 0.1 dB. What is the most likely cause?

Answer: Contaminated or improperly cleaved fiber end faces

High splice loss almost always results from dirty, chipped, or non-perpendicular end faces; cleaning and re-cleaving typically resolves elevated splice loss readings.

What is the correct procedure for using a conduit bender to make a 90-degree bend without kinking EMT conduit?

Answer: Place the bender's arrow at the measured take-up point, apply steady foot pressure while watching the degree indicator, and stop at 90 degrees

Proper conduit bending requires accounting for the bender's take-up (stub length offset), applying steady pressure, and stopping at exactly 90 degrees using the bender's angle indicator.

A technician notices the fish tape is binding inside a conduit. Which of the following actions is most appropriate?

Answer: Withdraw the tape, inspect for kinks or obstructions, lubricate the tape, and re-feed carefully

Withdrawing and lubricating the fish tape, then inspecting the conduit path for bends or debris, is the safe approach — forcing a binding tape can damage conduit fittings or break the tape.

Which measurement parameter does a Time Domain Reflectometer (TDR) use to calculate cable length?

Answer: The round-trip travel time of a reflected pulse combined with the cable's Nominal Velocity of Propagation (NVP)

A TDR sends a pulse and times the reflection; multiplying half the round-trip time by the NVP (expressed as a fraction of the speed of light) gives the cable length.

When pulling multiple CAT 6A cables simultaneously through conduit, what is the maximum recommended percentage of conduit fill for three cables?

Answer: 40% fill

NEC and standard practice limit conduit fill to 40% of the conduit's interior cross-sectional area when pulling three or more conductors or cables.

A label printer used for cable identification prints smeared text. What is the most likely cause and solution?

Answer: The print head is dirty or the label cartridge is incompatible — clean the head and verify the correct cartridge type

Smeared printing in thermal transfer label printers is usually caused by a dirty print head or using labels incompatible with the printer's print method; cleaning and matching cartridge type resolves the issue.

Which instrument is required to verify that a grounding and bonding conductor for a telecommunications room is properly connected and meets resistance requirements?

Answer: Low-resistance ohmmeter or earth ground tester

A low-resistance ohmmeter (micro-ohmmeter) or earth ground tester measures the continuity and resistance of bonding conductors and ground electrode systems to verify they meet TIA-607 requirements.