The SYN102 is Crystal Vision’s general video frame synchroniser, designed to eliminate timing problems in all serial digital installations.

The default synchroniser for sources without embedded audio, it can also be used as a cost-effective synchroniser for embedded audio applications where the input and output frame rate are locked together.

You should alternatively consider using the SYNNER range of synchronisers instead in your embedded environment.

The SYN102’s ‘fix anything’ capability has consistently made it one of Crystal Vision’s top-selling products.

It has remote or local output timing adjustment both horizontally and vertically, with a full two fields of adjustment. It can be used in all applications to replace a line synchroniser as it has a very short minimum delay of 2us, and will recover input timing in the minimum time possible. It has the added advantage of infinite timing window, and the ability to freeze the picture.

The SYN102 has two operational modes: synchroniser and delay line. A remote freeze function can be used in either.

In synchroniser mode it will automatically fix any incorrect frame rates plus any delays by taking its timing from the analogue reference.

Delay line mode is ideal for when the frame rate is correct but the source has been passed through equipment such as a chroma keyer and therefore been delayed for a few lines. The fixed delay can be set between 2us and two fields.

The serial digital output has virtually no output jitter (less than 500ps at 1kHz), both when used as a synchroniser (with a stable analogue reference) and when used as a delay line without a reference. Only in delay mode can jitter on the SDI input affect the output, but even then all high frequency jitter is removed by the internal phase-locked-loop.

Synchronisers are traditionally placed before a router to ensure all inputs have the same timing. This can become expensive if one is required for every video input. In 625 line applications where sources are synchronous but varying in timing by up to 23 lines, Crystal Vision provides an intelligent solution: one SYN102 can follow a router and have no disturbances on its video output.

How does it do this? It waits until the last possible moment in the vertical blanking, line 23, to set the vertical position. Other synchronisers lock up from line 1 and therefore a vertical switch at line 6 to a vertically offset picture would not be corrected for a whole field.

The 100mm x 266mm module can be controlled manually from board edge or remotely from active front panel, remote control panel, SNMP, the Statesman PC Control System or by using GPI.

Flexible outputs are available. The RM02 gives three SDI outputs and an active Black and Burst loop-through, the RM18 gives four SDI outputs and an active Black and Burst loop, and the RM23 gives two SDI outputs and a rear module Black and Burst loop.