These Rules are enacted in accordance with Paragraph 9, Article 20 of the Cable Radio and Television Act (herein after referred to as the Law).

Definition of terms under these Rules:
1. Head-end: refers to the equipment and its location for receiving, handling and transmitting the signal of cable radio or cable television to the distribution line network.
2. Distribution line network: refers to the network or equipment between the head-end and subscriber terminal.
3. Cable Radio and Television signal: refers to the signal of cable-layout transmission of video and audio or information signal for direct public reception.
4. Processor system of Cable Radio and Television signal: including television signal processor, television modulator, television demodulator, signal combiner and other relevant equipment.
5. Encryption: refers to the technology applied for special decoding program for watching or listening to programs.
6. Address Encryption: refers to the technology based on the use of signal processing technology by the operator for encryption on video and audio of specific channel, subscribers should use the addressed signal given by the operator for the decoder to restore it into normal reception signal.
7. Upstream: refers to the signal path from the subscriber to the head-end
8. Downstream: refers to the signal path from the head-end to the subscriber.
9. Hub: refers to the location where the cable radio and television signal received from the head-end is distributed to sub-distribution point.
10. Primary distribution line: refers to the network from the head-end to the hub.
11. Sub distribution line: refers to the network from the distribution center to the distribution point.
12. Distribution point: refers to the transfer point of the cable radio and television signal from the sub distribution line split to the control line network.
13. Allocation point: refers to the transfer point of the cable radio and television signal from the distribution point to the feeder line.
14. Feeder line: refers to the network from the distribution line to a specific region.
15. Subscriber tap: refers to the component which imports the cable radio and television signal from the feeder line split to the subscriber drop line.
16. Subscriber drop line: refers to the optical fiber, coaxial cable and Type 5 lines between the distribution point or subscriber tap to the subscriber terminal point.
17. Subscriber terminal point: refers to the point of interconnection between the subscriber terminal equipment and the cable radio and television network.
18. Equipment of subscriber terminal: refers to television, cable radio receiver or other relevant equipments.
19. Isolation degree of subscriber terminal: refers to the attenuation of bugging signal between two subscriber terminals, measured in units of decibels.
20. Video carrier level: refers to the root mean square value of the video carrier of the analog signal after tuning at the parallel synchronous pulse, measured in units of decibel millivolt.
21. Audio carrier level: refers to the root mean square of the audio carrier of specific analog television channel, measured in units of decibel millivolt.
22. Frequency Modulation (FM) carrier level: refers to the root mean square value of the FM signal wave carrier, measured in units of decibel millivolt.
23. Noise level: refers to the average random noise root mean square value of analog signal within frequency range of 4 MHz television signal and under the impedance of 75 ohm, measured in units of decibel millivolt.
24. Carrier to noise ratio: refers to the ratio value between carrier level and noise level, measured in units of decibels.
25. Subscriber drop line carrier to noise ratio: refers to the ratio of the carrier level and the noise intruding to the subscriber drop line, measured in units of decibels.
26. Intermodulation interference: refers to the distortion signal of two or more carrier waves produced through inter-related beat.
27. Composite beat level: refers to all intermodulation distortion power and equal level within the frequency range of 30 KHz, measured in units of decibel millivolt.
28. Carrier to composite beat ratio: refers to the ratio value of carrier level and composite beat level, measured in units of decibels.
29. Cross modulation: refers to the occurrence of the modulation signal of other channels in the system jamming the channel under-test.
30. Cross modulation ratio: the ratio value of the peak carrier of the channel-under-test in hundred percent wave modulation of other channels in the system and the peak-to-peak signal of cross modulation occurring in that channel, measured in units of decibels.
31. Carrier to beat ratio: refers to the ratio value of carrier level and singular beat or other singular noise signal level, measured in units of decibels.
32. Hum: refers to the low frequency noise signal that penetrated the carrier
33. Carrier to hum ratio: refers to the ratio of carrier level and peak-to-peak value of hum modulation, measured in units of decibels.
34. Differential gain: refers to the gain difference of sub carrier tincture of analog signals when loaded on different luminance levels, measured in units of percentage or decibels.
35. Differential phase: refers to the phase difference of sub carrier tincture of analog signals when loaded on different luminance levels, measured in units of degree.
36. Television channels: refers to a channel transmitting television signal through a 6 MHz bandwidth. Normally differentiated through numbers, alphabetical letters, video carrier frequency or upper-lower frequency limit of bands.
37. Assigned carrier frequency: refers to the carrier frequency of cable television approval of use by the central administrative authority.
38. Adjacent television channel: refers to television channels with video carrier frequency with a 6 MHz interval.
39. Digital television signal: refers to the television signal in digital form.
40. Digital television channel: refers to the television channel broadcasting digital television signal, which broadcasts one or more program channel(s).
41. Analog television channel: refers to the television channel broadcasting analog television signal, which broadcasts on program channel.
42. Program channel refers to the channel undertaking program and commercial in television channel.
43. Bit error rate: refers to the ratio of the digital signal’s error bits and total bits measured under a unit time.
44. Fiber drop in point: refers to the position where fiber optical-electronic data transmission facility locates in the distribution line network.
45. Signal Level: Indicate the root mean square of digital TV signal in each digital TV channel, whose unit is dBmV.
46. Modulation error ratio: The average power ratio of ideal vector to error vector amplitude, whose unit is dB.
47. High definition quality: Indicates the digital program resolution over 1280×720p.
48. Standard quality: Indicates the digital program resolution over 720×480i, but not reach high definition quality.

The inspection, examination, evaluation, management of engineering personnel and supervision of waves of the cable radio and television system (herein after referred to as the system) shall adhere to these Rules.