CableWorld Duo/Quad ASI Changeover & Timer CW-4836/4837/4838/4839

CableWorld ASI Changeover & Timer are equipped with a timed switch and monitors the quality of the transport stream at its main input, and on sensing error it automatically switches the signal of the reserve input to the output.

Digital television systems need automatic signal monitor and changeover devices similarly as analogue systems do. The ASI Changeover unit monitors the quality of the transport stream at its main input, and on sensing error it automatically switches the signal of the reserve input to the output. The CW-4836 model comprises two such automatic changeover modules, and the CW-4837 four of them. The conditions to release a changeover can be programmed; the switch can be set also manually from the PC.

Program providers are permitted to send out the programs of adult channels in limited hours of the day only. This requires devices providing possibility of changing the outgoing programs regularly, once or several times a day. Regular reprogramming of the transport stream re-multiplexer for this purpose is not the proper solution; the right solution is to compile the program packets parallel and switch over them with a timed switch. The CW-4838 and the CW-4839 ASI Changeover & Timer are versions of the changeover series, which are equipped with a timed switch, too. In ‘auto’ mode these versions work in the same way as the changeover units without timer do, and
when set to ‘manual’ mode, the device will switch over without monitoring the signal, according to the programming of the timer switch only.

Switching is made in all four versions with relay, assuring that the signal of the main input will be transmitted to the output even at power failure.

– Automatic ASI changeover controlled with transport stream monitor (CW-4836, CW-4837)
– Automatic ASI changeover with additional programmable timer switch (CW-4838, CW-4839)
– Duo and quad versions in identical construction
– The transport streams connected to the main input can be analysed and reproduced through the CW-Net system
– Use of relay switches assures the output signal even at power failure

Available different versions for the CableWorld Duo/Quad ASI Changeover & Timer:

CW-4836 ASI Changeover Duo
– Two independent transport stream monitor and automatic changeover units

CW-4837 ASI Changeover Quad
– Four independent transport stream monitor and automatic changeover units

CW-4838 ASI Changeover & Timer Duo
– Two independent transport stream monitor and automatic changeover units with programmable timer

CW-4839 ASI Changeover & Timer Quad
– Four independent transport stream monitor and automatic changeover units with programmable timer

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