The ADDEC-310 12 bit decoding converter provides an excellent way to bring any analogue sources into a digital environment.

Used with sources generated by cameras, tape machines, DVD players or graphics generators, it can convert different analogue signals (PAL/NTSC composite, Y/C, YUV or RGB) to SDI, making it ideal for multiple applications and resulting in reductions in cost and rack space.

Input sources can be of any quality from full broadcast to VHS, with jittery signals accepted. ADDEC-310 has been designed to work both with RGB which has integrated syncs and RGB with separate syncs, which addes further flexibility.

Performance is excellent, thanks to data sampled at 54Mbit per second allowing the highest quality digital filtering, as well as the five line comb decoder and the 12 bit A to D which reduces quantising noise.

The internal video proc-amp allows adjustment of gains and levels for further picture improvements.

ADDEC-310 includes a synchroniser which allows untimed inputs to be timed to the local syncs. This will fix any incorrect frame rates as well as any delays by taking its timing from the external analogue reference, automatically synchronising sources between 0 and 2 fields.

The output timing can also be vertically offset with respect to the reference by any number of lines up to a whole frame.

In the absence of a reference, ADDEC-310 can operate in delay mode where timing is derived from the analogue input, with the addition of a fixed delay of up to two fields to compensate for the processing delays.

An audio follow pulse allows ADDEC-310 to be used with an external tracking audio delay, and means that an audio delay can track the video delay through the board.

The picture can be frozen, allowing ADDEC-310 to extend its functionality and be used as a simple still store.

The ability to select NTSC Betacam chrominance levels for YUV inputs - giving 700mV for 75% colour bars instead of the standard 700mV for 100% bars - increases the range of systems with which it can be used.

Data in the blanking interval of the composite input can be blanked or passed, while the current board settings can be saved in one of 16 locations to be recalled as required.

The 100mm x 266mm module fits in Crystal Vision's standard frames allowing it to be freely mixed with any product from the range. Taking up very little space, 24 boards can be housed in 4U, 12 in 2U, six in 1U or two in a desk top box.

Five different frame rear modules (RM01, RM23, RM24, RM25 and RM27) mean you can configure just the outputs you need, with a maximum of four SDI available, dependent on the input format and the rear module fitted. An input loop-through is available on the RM24, RM25 and RM27, while you can distribute your reference by using the Black and Burst loop available on all rear modules except the RM01.

ADDEC-310 provides very flexible control, with any adjustments available at the board edge as well as remotely. There are an extensive set of board edge controls, allowing the adjustment of levels and gains along with other options, with the inclusion of a ten character alphanumeric board edge display making diagnosis and adjustment easy.

Other control options include an active frame front panel, remote control panel, SNMP and the Statesman PC control software.