System inspection shall fall into three categories: engineering inspection, self inspection and unscheduled inspection.
Engineering inspection is divided into these areas: the quality of systems and signals and the inspection of equipment safety and network construction.
System inspection shall be implemented when rated frequency ranges or channels applied by the system operator are fully loaded, including all channels and control and testing signals of the system.

A system operator shall submit the following documents to the central administrative authorities together with the special municipality, or county (city) government authorities for the implementation request of engineering inspection:
1. A photocopy of the set-up permit.
2. Application form and testing record sheet for Cable Radio and Television system engineering inspection.
3. Configuration map and usage instruction of head-end device.
4. A digitized or paper map of distribution networks (including street names, important parameters, the earthing resistance value of measured spots). The typeface of electronic files shall be clear and identifiable, and the scale paper files shall not be smaller than millesimal.

The reason of conducting detection to Subscriber drop line carrier to noise ratio:
1. Subscriber complaints pertaining to poor quality of the signal.
2. The central competent authority deems it is necessary

System operators making alterations to the network structure shall submit the following information to the central administrative offices for application of operation plan alteration:
1. Alteration of network structure and instruction
2. Detailed map of alteration of the distribution network or electronic video files

System operators transform digital TV channel into analogy TV channel or increasing use of bandwidth who offer analogy TV channel should submit the following information to the central administrative offices for application of operation plan alteration:
1. Detail map of distribution network or electronic video files
2. All catalogues of subscriber tap used in the distribution network (should include the value of isolation degree within)

System operators who transform existing analog TV channels into digital TV channels or increase number of channels of wide bandwidth digital TV channel should submit the following information to the central administrative offices for application of operation plan alteration:
1. Catalogue or instruction handbook of added or altered digital transmission device
2. Detailed map in distribution network or electronic video files.

System operators making alterations of address encryption should submit the catalogue and instruction handbook (including volume of address encryption subscribers, wave phase, downstream of address signal and encryption method of audio) of the added or altered address encryption device to the central administrative authority for inspection.

System operators should carry out self-inspection of its system once every year and submit its testing report sheet and testing record sheet to the central administrative authority for reference. The information in the above paragraph shall be kept for one year, the central administrative authority may send an investigator for inspection.

The central administrative authority may send authorities with identification documents to carry out unscheduled inspection on Cable Radio and Television system and request the system operator to report and provide relevant information on its system condition and other necessary items.

The central administrative authority in consideration of maintenance of the airwave order, protection of the consumer rights and upgrade of the Cable Radio and Television technical engineering standard, may conduct itself or entrust a civil committee to conduct the engineering inspection on cable ratio and television system.
Engineering evaluation item includes 4 categories: engineering device, transmission quality, monitoring operations and general rating. All system operators should participate.
When carrying out the engineering inspection, the central administrative authority may request the evaluated party to provide necessary documents; the participant may not refuse such request. All wired broadcasting TV system operation with operation permit granted by central authority organization may be listed as united to be evaluated.