HD-SDI is a SMPTE protocol, used in digital TV Broadcasting. It is now also used for HD-CCTV digital surveillance imaging.
Standard resolution and data rates are as follows:
|SMPTE 259M - SDI||143 - 360Mbit/s|
|SMPTE 344M - HD-480p||540Mbit/s|
|SMPTE 292M - HD-720p||1.485Gbit/s|
|SMPTE 372M - HD-1080p-Deep Color||2.97Gbit/s|
|SMPTE 424M - HD-1080i||2.97Gbit/s|
Derived from the HD-SDI standard, a new surveillance camera standard has been launched. It uses coax cabling and achieves typically 720p resolution at 1.485Gbit/s. In version 1.0 of the HD-CCTV spec, only data from the camera is defined. Control of the camera is left open.
Cable lengths of 100m are common, with repeaters used to extend cable range. EqcoLogic is a contributing member of the HDcctv Allaince.