Compare HD Analog Technology

Since HD Analog technology launched in 2010, several HD Analog formats have been developed, including: HD-SDI, AHD, HD-CVI and HD-TVI. While all HD Analog options offer the same basic benefits compared to analog or IP – delivering HD video over standard coaxial cable – formats vary in the resolution, transmission distance, camera compatibilities, and configurability.

Here is how HD Analog formats compare:

Technology		HD-CVI	AHD	HD-SDI	HD-TVI
Max Resolution		1080p1920 x 1080 px	1080p*1920 x 1080 px*expected EOY 2014	1080p1920 x 1080 px	1080p1920 x 1080 px
Video Output Quality		Very good in daylightImages not as crisp in low light conditions	GoodImages not as crisp Colors not as accurate	Very goodSharp images up to 1080p True colors	Very goodSharp images up to 1080p True colors
Transmission Distance	Coaxial Cable (RG59)	1600’ (720p) 1300’ (1080p)	1600′	492′	1600′
	Twisted Pair (CAT5)	650′	492′	350′(digital converter required)	700′
DVR Input Compatibility	Analog	All analog cameras, limited channels, limited configurations	All analog cameras, limited channels, limited configurations	Limited models, limited channels, limited configurations	All analog cameras, on any channel, in any configuration
	HD Analog	Like-branded HD-CVI cameras, on any channel, in any configuration	Like-branded AHD cameras, on any channel, in any configuration	Select HD-SDI cameras, on any channel, in any configuration	Any HD-TVI camera, on any channel, in any configuration
	IP	Supported IP cameras, on select channels, in select configurations	N/A	N/A	Supported IP cameras, on 2 channels, in any configuration
DVR Hybrid Capabilities		Limited configurability	Limited configurability	Limited configurability	Yes, unlimited configurability
Format Compatibility		Proprietary technology, only produced by 1 manufacturer, Dahua - out of China. Concern is limited supply options, limited technology options, and lack of competitive pricing	Open standard, limited manufacturers	Open standard, multiple manufacturers - are currently exiting the market as alternative HD formats outpace SDI	Open standard, over 100 manufacturers have launched or are developing solutions using TVI technology
		Learn More About HD-CVI	Learn More About AHD	Learn More About HD-SDI	Learn More About HD-TVI