Description
BELDEN VIDEOTWIST DIGITAL VIDEO AND DATA SOLID CONDUCTOR MULTIPAIR CABLES
The Belden ‘Videotwist’ series of cables are designed to provide very low signal skew and low return loss, and are particularly suitable for driving high-resolution RGB video displays and other applications where the different physical lengths of the pairs in a multipair cable is a critical issue.
U/UTP (unscreened twisted pair) cables, by design, have different twist lengths for each pair which means that each pair has a different physical length. This difference in length causes a signal delay difference from pair to pair which is known as skew. The resulting skew limits the overall transmission distance of the U/UTP cable. The higher the skew, the shorter the distance. For this reason, most U/UTP cables are limited to a transmission distance of about 100-200 metres unless skew compensation equipment is used. Dependent on the parameters of the equipment used, it is possible to extend this to 400 metres and beyond using the ‘Videotwist’ series of cables.
7988R and 7989R have the pair wires bonded together, thus ensuring that a precise geometry is maintained during installation as the pair wires cannot move in relation to each other. This ensures that the highest level of performance is maintained. These are rated Category 5E and Category 6 respectively, making them suitable for critical data transmission applications, including KVM functions over longer distances.
Technical Specification:
7987R
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Rating: | Video |
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Conductors: | 1/0.52mm (24AWG) plain copper |
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Insulation: | Polyolefin, according to CW1308 colour code |
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Lay-up: | Two insulated conductors twisted together, pairs twisted together |
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Overall jacket: | PVC, OD 4.95mm, maroon |
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Impedance: | 100 +/-15 ohms |
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Attenuation (dB/100m): | 1MHz | 10MHz | 100MHz | 200MHz | 350MHz |
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| 2.0dB | 6.5dB | 22.0dB | 32.0dB | 44.8dB |
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Return loss (min.): | 1MHz | 10MHz | 100MHz | 200MHz | 350MHz |
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| 15.0dB | 15.0dB | 15.0dB | 15.0dB | 15.0dB |
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Weight: | 3.3kg/100m |
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Reel length: | 305 metres (Belden ‘Unreel’ box dispenser pack) |
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Cut lengths: | Not available. May only be ordered in multiples of 305 metres |
7988R
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Rating: | Category 5E |
|
Conductors: | 1/0.52mm (24AWG) plain copper |
|
Insulation: | Polyolefin, according to CW1308 colour code |
|
Lay-up: | Two insulated conductors bonded together and twisted, pairs twisted together |
|
Overall jacket: | PVC, OD 5.08mm, green |
|
Impedance: | 100 +/-15 ohms |
|
Attenuation (dB/100m): | 1MHz | 10MHz | 100MHz | 200MHz | 350MHz |
|
| 2.0dB | 6.5dB | 22.0dB | 32.0dB | 44.8dB |
|
Return loss (min.): | 1MHz | 10MHz | 100MHz | 200MHz | 350MHz |
|
| 20.0dB | 25.0dB | 20.1dB | 15.0dB | 9.9dB |
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Weight: | 3.3kg/100m |
|
Reel length: | 305 metres (Belden ‘Unreel’ box dispenser pack) |
|
Cut lengths: | Not available. May only be ordered in multiples of 305 metres |
7989R
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Rating: | Category 6 |
|
Conductors: | 1/0.52mm (24AWG) plain copper |
|
Insulation: | Polyolefin, according to CW1308 colour code |
|
Lay-up: | Two insulated conductors bonded together and twisted, pairs laid side-by-side |
|
Overall jacket: | PVC, 9.27mm x 4.19mm, blue |
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Impedance: | 100 +/-15 ohms |
|
Attenuation (dB/100m): | 1MHz | 10MHz | 100MHz | 200MHz | 350MHz |
|
| 2.0dB | 6.0dB | 19.8dB | 29.0dB | 59.8dB |
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Return loss (min.): | 1MHz | 10MHz | 100MHz | 200MHz | 350MHz |
|
| 20.0dB | 25.0dB | 20.1dB | 15.3dB | 13.9dB |
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Weight: | 5.3kg/100m |
|
Reel length: | 305 metres |
|
Cut lengths: | Not available. May only be ordered in multiples of 305 metres |