GB/T 4574-1984 Measuring methods for actual circuit noise and the circuit noise in simulating system loading over the analogue communication network

Standard No.: GB/T 4574-1984
Language: Chinese
Release Date: 1984
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Lastest: GB/T 4574-1984

Scope: This standard proposes two noise test methods. The first method is suitable for measuring actual circuit noise in an analog communication network and can also be used for maintenance testing. The second method proposes to use white noise to simulate the system load to measure the noise generated by the system in the circuit, basic group section and supergroup section composed of frequency division multiplexing system in the communication network, which is suitable for acceptance test and quality inspection.

1984 GB/T 4574-1984 Measuring methods for actual circuit noise and the circuit noise in simulating system loading over the analogue communication network

GB/T 4574-1984Measuring methods for actual circuit noise and the circuit noise in simulating system loading over the analogue communication network