Video encoding: This unit uses MPEG-2 real-time compact encoding chipset to encode digital video data from video output interface by MPEG-2 compact algorithm. After encoding, the Elementary Stream was sent to video packetizer, the PES (Packetized Elementary Stream) was sent to the program multiplexer(MUX). The compacting encoding process is MP@ML, maximum bit rate 15Mbps.
Audio encoding: The special audio encoding software encodes the input analog audio into audio Elementary Stream, then send to the audio packetizer, the PES was sent to the program multiplexer. Program multiplex joins the bit streams after video/audio encoding into SPTS (Single Program Transport Stream). After data processing, the multiplexed TS will be output through DVB SPI or ASI interface.

Model	SDHE-1821
Code	521120
System	NTSC (525/60) or PAL (652/50)
Composite video signal	BNC female, 75 Ω; 27 MHz sample frequency
S-Video interface	Mini-DIN female; 13,5 MHz sample frequency
Audio interface	BNC (unbalanced) and XLR (balanced); 1 x stereo or 2 x mono
Sound sample frequency	32 / 44.1 / 48 kHz
MPEG-2 standards	ISO11172 (MPEG-1) and ISO13828 (MPEG-2) MP@ML
Resolution	PAL: 720x576 max. / NTSC:720x480 max.
Output stream	1,5 ~ 15 Mbit/s
Audio encoding	MPEG layer I&II, CD quality
ASI output interface	BNC lizdas, 75 Ω; 188bit packet format
SPI output interface	DB-25; 188bit packet format
Management interface	IEEE802.3 ETHERNET, RJ45
Power supply	90 ~ 250 VAC, 50 Hz / 20W
Dimensions / Weight	1U x 19" x 300mm, 5kg
Operation / storage temperature	5°C ~ +45°C / -25°C ~ +55°C
Structure diagram