Home └LAN101: Intro to Cable TV & Internet Service Delivery └Signal Test & QA

LAN101: Intro to Cable TV & Internet Service Delivery

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Signal Test & QA

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1. Why is signal testing important during a cable service installation?
To choose the customer's channel package. To ensure reliable service delivery and proactively identify potential issues. To program the remote control. To measure the length of the drop cable.
2. What unit is typically used to measure Cable TV signal level (strength)?
Watts (W) Volts (V) Decibel-millivolts (dBmV) Megahertz (MHz)
3. Which measurement indicates the "cleanliness" or accuracy of a received digital signal, where a higher value is generally better?
Bit Error Rate (BER) Signal Level (dBmV) Modulation Error Ratio (MER) Cable Length (Feet)
4. What common signal impairment involves outside RF signals leaking into the cable system, often through bad connectors or damaged shielding?
Egress Amplification Ingress Attenuation
5. What is the primary electronic tool used by technicians to measure signal level, MER, and BER during an installation?
A cable stretcher A laptop computer A Signal Level Meter (SLM) A standard voltmeter