The Belden 7851A cable is a paired enhanced Category 6 bonded - pair data cable made from 23 AWG bonded pairs solid copper conductors. The cable is suitable as a horizontal cable and Gigabit Ethernet, 100BaseTX, 100BaseVG ANYLAN, 155ATM, 622ATM, NTSC/PAL Component or Composite Video, AES/EBU Digital Audio, AES51, RS-422, Noisy Environment applications.
Cable Construction
| Number of Pairs: | 4 |
| Total Number of Conductors: | 8 |
| AWG: | 23 |
| Stranding: | Solid |
| Conductor Material: | Bare Copper (BC) |
| Insulation Material: | Polyolefin (PO) |
| Colour Code Chart: | Number 1 : White/Blue Stripe & Blue |
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Number 2 : White/Orange Stripe & Orange |
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Number 3 : White/Green Stripe & Green |
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Number 4 : White/Brown Stripe & Brown |
| Overall Cabling Fillers: | E-Spline Centre Member |
| Outer Shield Material: | Unshielded |
| Outer Jacket Material: | Polyvinyl Chloride (PVC) |
| Outer Jacket Ripcord: | Yes |
| Overall Nominal Diameter: | 0.227 x 0.315" |
| Operating Temperature Range: | -20°C To +75°C |
| Bulk Cable Weight: | 31.3 lbs/1000 ft. |
| Maximum Recommended Pulling Tension: | 45 lbs. |
| Minimum Bend Radius (Install): | 0.25" |
| NEC/(UL) Specification: | CRM, UL444 |
| CEC/C(UL) Specification: | CMR |
| EU CE Mark: | Yes |
| EU RoHS Compliant: | Yes |
| EU RoHS Compliance Date: | 01/01/2004 |
| TIA/EIA Specification: | 568-B.2-1 Category 6 |
| Other Specification: | UL verified to Category 6 |
| UL Flame Test: | UL1666 Riser |
| CSA Flame Test: | FT4 |
| Plenum: | No |
| Plenum Number: | 7852A |
Electrical Properties
| Nominal Mutual Capacitance @ 1 KHz: | 15.5 pF/ft |
| Maximum Capacitance Unbalance (pF/100 m): | 65.6 pF/100 m |
| Nominal Velocity of Propagation: | 67% |
| Maximum Delay (ns/100 m): | 538 @ 100MHz ns/100 m |
| Maximum Delay Skew (ns/100m): | 38 ns/100 m |
| Maximum Conductor DC Resistance @ 20 Deg. C: | 8.2 Ohms/100 m |
| Maximum DCR Unbalance @ 20 Deg. C: | 3% |
| Max. Operating Voltage - UL: | 300 V RMS |
Premise Electrical Characteristics
| Frequency (MHz) |
Max. Attenuation (dB/100 m) | Min. NEXT (dB) | Min. PSNEXT (dB) | Min. ACR (dB) | Min. PSACR (dB) | Min. Return Loss (dB) | Min. Structural Return Loss (dB) |
| 1 | 1.9 | 82.3 | 80.3 | 80.5 | 78.5 | 20.0 | 27.0 |
| 4 | 3.6 | 73.3 | 71.3 | 69.7 | 67.7 | 23.0 | 27.0 |
| 8 | 5.1 | 68.8 | 66.8 | 63.7 | 61.7 | 24.5 | 27.0 |
| 10 | 5.7 | 67.3 | 65.3 | 61.6 | 59.6 | 25.0 | 27.0 |
| 16 | 7.2 | 64.3 | 62.3 | 57.0 | 55.0 | 25.0 | 27.0 |
| 20 | 8.1 | 62.8 | 60.8 | 54.7 | 52.7 | 25.0 | 27.0 |
| 25 | 9.1 | 61.3 | 59.3 | 52.3 | 50.3 | 25.0 | 27.0 |
| 31.25 | 10.2 | 59.9 | 57.9 | 49.7 | 47.7 | 25.0 | 27.0 |
| 62.5 | 14.7 | 55.4 | 53.4 | 40.7 | 38.7 | 25.0 | 27.0 |
| 100 | 18.9 | 52.3 | 50.3 | 33.4 | 31.4 | 25.0 | 27.0 |
| 155 | 23.9 | 49.5 | 47.5 | 25.5 | 23.5 | 22.8 | 24.7 |
| 200 | 27.5 | 47.8 | 45.8 | 20.3 | 18.3 | 21.7 | 23.4 |
| 250 | 31.2 | 46.3 | 44.3 | 15.2 | 13.2 | 20.5 | 22.2 |
| 300 | 34.5 | 43.2 | 41.2 | 10.6 | 8.6 | 20.2 | 21.2 |
| 310 | 35.2 | 42.9 | 40.9 | 9.8 | 7.8 | 20.1 | 21.1 |
| 350 | 37.7 | 42.2 | 40.2 | 6.5 | 4.5 | 19.8 | 20.4 |
| 400 | 40.6 | 41.3 | 39.3 | 2.6 | 0.6 | 19.5 | 19.7 |
| 450 | 43.5 | 40.5 | 38.5 | 2.1 | 0.10 | 18.9 | 19.1 |
| 460 | 44.0 | 38.4 | 0 | 0 | 18.8 | 19.0 | |
| 500 | 46.2 | 39.8 | 37.8 | |
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18.4 | 18.5 |
| 550 | 48.8 | 39.2 | 37.2 | |
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18.0 | 18.0 |
| 600 | 51.4 | 38.6 | 36.6 | |
|
17.6 | 17.6 |
Premise Cable Electricals Table 2
| Frequency (MHz) | Input (Unfitted) Impedance (Ohms) | Fitted Impedance (Ohms) |
Min. ELFEXT (dB) | Min. PSELFEXT (dB) |
| 1 | 100 ± 12 | 100 ± 15 | 73.8 | 70.8 |
| 4 | 100 ± 12 | 100 ± 10.4 | 61.8 | 58.8 |
| 8 | 100 ± 12 | 100 ± 8 | 55.7 | 52.7 |
| 10 | 100 ± 12 | 100 ± 7.3 | 53.8 | 50.8 |
| 16 | 100 ± 12 | 100 ± 5.7 | 49.7 | 46.7 |
| 20 | 100 ± 12 | 100 ± 5 | 47.8 | 44.8 |
| 25 | 100 ± 15 | 100 ± 5 | 45.8 | 42.8 |
| 31.25 | 100 ± 15 | 100 ± 5 | 43.9 | 40.9 |
| 62.5 | 100 ± 15 | 100 ± 5 | 37.9 | 34.9 |
| 100 | 100 ± 15 | 100 ± 5 | 33.8 | 30.8 |
| 155 | 100 ± 15 | 100 ± 5 | 30.0 | 27.0 |
| 200 | 100 ± 15 | 100 ± 5 | 27.8 | 24.8 |
| 250 | 100 ± 20 | 100 ± 5 | 25.8 | 22.8 |
| 300 | 100 ± 20 | 100 ± 5 | 24.3 | 21.3 |
| 310 | 100 ± 20 | 100 ± 5 | 24.0 | 21.0 |
| 350 | 100 ± 22 | 100 ± 5 | 22.9 | 19.9 |
| 400 | 100 ± 22 | 100 ± 5 | 21.8 | 18.8 |
| 450 | 100 ± 22 | 100 ± 5 | 20.7 | 17.7 |
| 460 | 100 ± 22 | 100 ± 5 | 20.5 | 17.5 |
| 500 | 100 ± 22 | 100 ± 5 | 19.8 | 16.8 |
| 550 | 100 ± 22 | 100 ± 5 | 19.0 | 16.0 |
| 600 | 100 ± 22 | 100 ± 5 | 18.2 | 15.2 |
Cable Ordering Information
| Item | Description | Put-Up (ft.) | Ship Weight (lbs.) | Jacket Color |
| 7851A 0021000 | 4 PR #23 PP FRPVC | 1000 | 40 | Red |
| 7851A 002A1000 | 4 PR #23 PP FRPVC | A1000 | 41 | Red |
| 7851A 0031000 | 4 PR #23 PP FRPVC | 1000 | 40 | Orange |
| 7851A 003A1000 | 4 PR #23 PP FRPVC | A1000 | 41 | Orange |
| 7851A 0041000 | 4 PR #23 PP FRPVC | 1000 | 40 | Yellow |
| 7851A 004A1000 | 4 PR #23 PP FRPVC | A1000 | 41 | Yellow |
| 7851A 0051000 | 4 PR #23 PP FRPVC | 1000 | 40 | Dark Green |
| 7851A 005A1000 | 4 PR #23 PP FRPVC | A1000 | 41 | Dark Green |
| 7851A 0061000 | 4 PR #23 PP FRPVC | 1000 | 40 | Light Blue |
| 7851A 006A1000 | 4 PR #23 PP FRPVC | A1000 | 41 | Light Blue |
| 7851A 0091000 | 4 PR #23 PP FRPVC | 1000 | 40 | White |
| 7851A 009A1000 | 4 PR #23 PP FRPVC | A1000 | 41 | White |
| 7851A 0101000 | 4 PR #23 PP FRPVC | 1000 | 40 | Black |
| 7851A 010A1000 | 4 PR #23 PP FRPVC | A1000 | 41 | Black |
| 7851A F6H1000 | 4 PR #23 PP FRPVC | 1000 | 40 | Grey, Dark Pearl |
| 7851A F6HA1000 | 4 PR #23 PP FRPVC | A1000 | 41 | Grey, Dark Pearl |
