1、 G Y /T 165 2000 Specifications and measuring methods of digital transmit channel for master control system in TV center 2000-07-07 2000-10-01 Rec.ITU-R BT.656 ITU-R BT.656 BT.799 BT.1120 GY/T 1652000 33 1 2 GB 3174-1995 PAL-D GB/T 14236-1993 GB/T 14857-1993 GB/T 17953-2000 4:2:2 GY/T 107-1992 3 3.1
2、 master control system 3.2 digital transmit channel ( ) ( ) 1 3.3 serial digital video signal GB/T 14857-1993 GB/T 17953-2000 4:2:2 G Y /T 165 2000 Specifications and measuring methods of digital transmit channel for master control system in TV center 2000-07-07 2000-10-01 GY/T 165-2000 34 A B C D E
3、 (a) (b) 1 4 4.1 4.1.1 10 270Mbps SDI L=800mv UI=3.7ns 4.1.2 2 2 ( ) ( ) 80% 20%GY/T 165-2000 35 Jitter (J) ps UI Rise Time t 20%-80% Overshoot 4.1.3 1 1 J Ps UI (10Hz ) t (ps) (mv) L (mv) A 540 10% 0.13 0.02 1100 5%L 800 5% B 540 10% 0.13 0.02 1000 5%L 800 5% C 540 10% 0.13 0.02 1300 5%L 800 10% D
4、350 10% 0.11 0.02 800 5%L 800 5% E 700 10% 0.17 0.02 1500 10%L 800 +5% -20% 4.2 a) 110 b) 0.07UI 5 5.1 5.1.1. 3.3 5.1.2 SDI SDI V 3.5 3.5 1.5 + GY/T 165-2000 36 5.1.3 3 3 a) 1 T1 T2 2 b) T1 20% T2 80% T1 T2 c) L d) L = L L 100% 5.2 4 AES/EBU AES/EBU AES/EBU AES/EBU 4 1 * 010 66093424 66092645 100866 22.00
