Field tech 1 Questions and Answers 100% Pass

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Field tech 1 Questions and Answers 100% Pass 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) 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 s [Show More]

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