1、GYGY/T 275 2013 Technical specifications of radio programme quality monitoring 2013 - 12 - 06 2013 - 12- 06 GY/T 275 2013 I II 1 1 2 1 3 1 4 2 5 3 6 4 7 5 GY/T 275 2013 II GB/T 1.1-2009 SAC/TC 239 GY/T 275 2013 1 1 2 GB/T 21671-2008 IEC/TR3 60268-10-1991 10 : Sound system equipmentPart 10: Peak prog
2、ramme level meters3 3.1missing channel 3.2 level difference between left and right channels 3.3 level range of radio programme 3.4 the maximum allowable level IEC/TR3 60268-10-1991 0dBFS9dB 9dBFS 3.5 clipping GY/T 275 2013 2 3.6 shock-waves noise 4 4.1 4.2 4.2.1 a -1 0 -0.75 b 1 c :60% d 4.2.2 a) -4
3、8dBFS b) 8 c) 90% d) 4.2.3 a) -48dBFS b) 8 c) 90% GY/T 275 2013 3 d) 4.2.4 a) -9dBFS b) 2 c) 80%d) 4.3 4.3.1 a) -24dBFS b) -9dBFS c) 2d) 4.3.2 a) 20dBb) 1c) 4.3.3 4.3.4 5 5.1 5.1.1 GY/T 275 2013 4 0 5 0 5 0 15.1.2 28 28 1 5.1.3 - - 2V 7V- 1.0V 0.1V 5.2 5.2.1 28 28 1 4 31 4 31 1 0 5.2.2 75 - - - 0.3V
4、 0.6V 20% 80% 1ns 3ns -0.5ns 0.5ns5.2.3 75 0V 0.1V5.3 4.2 4.36 6.1 6.2 GY/T 275 2013 5 6.2.1 1 6.2.2 6.2.3 6.36.4 4.2 4.3 7 7.1 7.2 1kHz -20dBFS1% 7.3 1kHz -20dBFS30 7.4 GB/T 21671-2008 6.3.2 7.5 GB/T 21671-2008 6.3.3 7.6 GY/T 275 2013 6 GB/T 21671-2008 6.3.47.7 GB/T 21671-2008 6.3.57.8 4.2 4.3GY/T 275 2013 * 010 86093424 86092923 100866
