Field Tech 1 Exam Questions and Answers Latest Updated 2023/2024 (Graded)

Field Tech 1 Exam Questions and Answers Latest Updated 2023/2024 (Graded). Upstream frequency ranges between 5Mhz and 42Mhz Downstream frequency ranges Between 50MHz 860MHz Upstream frequency ranges 5MHz and 42 MHz A 6 MHz downstream channel can hold 2-4 hd channels or 8-12 standard definition channels Egress When a signal leaks out of a cable Ingress when a signal leaks into a cable Field technicians are responsible from The tap to the CPE (customer premise equipement) Field Tech 1 Exam Questions and Answers Latest 2023/2024 (100% Pass) The most preferred BER is measured in ________ and is shown as _______ Billions, 1.0E09 The headend Is the master facility for distributing signals over a cable television system Charter passing modem receive levels (Rx) between -10dBmv and +12dBmv Charter passing modem transmit levels (Tx) between 35dBmv and 50dBmv Charter passing MER 35dBmv HD channels around 10Mbps each standard definition channels around 3-4Mbps each QAM (qaudarature apmlitude modulation) two amplitude modulated waveforms at the same frequency that are phase shifted by 90 degrees QPSK (qaudrature phase shift keying) 16 QAM, 64 QAM, and 256 QAM are all exapmples of QAM modulation. RF loss or gain is a relative measurement and is measured in dB (decibels) RF measurements that are read from a meter are absolute measurements and are measured in dBmV (decibels per millivolts) Analog signal loss is often gradual and reduces signal slowly Digital signal loss sudden where very small margin exists for difference between a good picture and no picture (called the cliff effect) FM radio stations found between frequencies 88 MHz and 108 MHz frequency number of fully completed cycles per second Hertz one complete cycle MHz (megahertz) refers to millions of cycles per second 700 Mhz 700 million hertz CATV, cable plant, or tight system is a closed system where rf energy must be contained Signal leakage meters typically have antennas and are used to find leaks in the plant. rubber ducky, dipole, and near field antennas 1 milivolt measured across 75 Ohms 0 dBmV characteristic impedance of cable 75 Ohms Impedance mismatches refer to defects within the plant, such as kinks , cuts, bends, water damage, and poor installation (bad fitings/ terminators.) Line toner/ multimeter assist in identifying lines torque wrenches typically 20-30 inch pounds to tighten f connectors compisite video/ RCA cables not high def, used to pass baseband video and audio signals Foil i the outer portion of the braid should be removed when properly preparing and Fconnector HDMI uses a multi-pin connection for digital video and milti-channel audio MER the more concentrated the dots are in a constellation display the better the signal quality fish tape come in lengths of 25 feet and longer and are used to run lines through walls and conduit. P-hooks installed at the house with P facing up J-hooks installed at the pole with J facing up span clamps installed with opening upward and pointing toward customers premises security shield tools used to connect drop cables to tap port through port shields DC loop resistance is a value that can help you determine the length of a drop Coaxial calbe two conductors runing around a central axis coaxial anatomy jacket, shielding, dielectric, and center conductor self install kit jumper fittings should be hand tightened inside the customer premises custom jumpers should be hand tightened on customer equipment and torqued to 20 in lbs passive devices (splitters) do not require power to operate. active devices (amplifiers) require power to operate. negative trap or filter blocks services by attenuating certain frequencies more than others. Flooded orange underground cable stiffer/denser jacket that better withstands compression of being buried. also contains flooding compound that helps prevent water from intruding into the cable if cable was compromised. wire braid should be folded evenly back over the dielectric when prepping a new fitting weather grommets used on outdoor splitters and tap ports to help weatherproof