Crystal Vision Releases M-SAFE SWITCH-2

Crystal Vision presents a fail-safe routing switch that works with both IP and SDI.

The M-SAFESWITCH-2 has been designed to keep broadcasters on air, whether they are working in IP or SDI or a mixture of both. With its two independent 2 x 1 switches, the M-SAFESWITCH-2 is Crystal Vision's first dual channel routing switch and is said to help broadcasters save money by being 37% cheaper per channel than the company's original fail-safe switch.

Supporting SMPTE ST 2022 and ST 2110 IP protocols as well as SDI, it is for planned maintenance switches to manually re-route a good signal around broken equipment, or for use as a very sophisticated auto changeover switch with the option of selecting from ten different fault conditions to automatically trigger the switch.

The switch will ensure there is no disruption to the output picture when a switch takes place, using its framestore synchronizers plus the ability to delay the earliest arriving input by up to ten frames to correct any timing differences between the inputs. The software app runs on the MARBLE-V1 media processor hardware, a card which features a CPU/GPU processor and both SDI and 10GbE IP network interface connections and which is housed in the Vision frame.

Explained Crystal Vision's MD, Philip Scofield: “The M-SAFESWITCH-2 app is the latest in a growing range of video and audio apps for the MARBLE-V1 media processor that help IP installations have the features broadcasters need, while gaining the advantages of using an IT infrastructure.

The device can be switched either manually or automatically. In non-emergency situations it can be used to manually switch to backup when equipment in the chain needs fixing or updating. When used as a fail-safe switch, ten fault conditions can be selected to automatically trigger a switch: input missing, input video standard incorrect, active video black, active video frozen, video error, network error, audio group 1 missing, audio group 2 missing, audio group 3 missing and audio group 4 missing.

Different parameters can be chosen for each switch. After switching away from a faulty input, the M-SAFESWITCH-2 can be set to switch back automatically or by user intervention. Helpful status monitoring will indicate which errors are present for each flow, allowing them to be fixed before switching back.

“With its ability to guarantee a clean switch, the M-SAFESWITCH-2 is ideal for use on the final output stage of a transmission system. Typically the backup signal going into the switch will have gone a simplified route compared to the main programme and therefore arrive several frames earlier than the main input, which can upset the MPEG encoder on a switch to backup.”

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