Central Office Products Datacom Tight Twisted Pair Digital Terminating Cable Spec. 4129 • Type CMR • 1249C Series 26 AWG Dual Insulated/Shielded/Jacketed Product Construction Conductors: • 26 AWG solid tinned annealed copper Insulation: • Inner layer of Polyethylene, outer layer of PVC • Primary insulation, Nominal O.D. = 0.022" • Secondary insulation, Nominal O.D. = 0.029" Color Code: PRODUCT NUMBER PAIRS O.D. (INCHES) WEIGHT (LBS/KFT) 0.27 0.28 0.34 0.37 0.41 0.43 0.44 0.50 0.60 25 32 49 60 72 84 91 101 144 • See chart below 7412904 7412906 7412912 7412916 7412920 7412925 7412928 7412932 7412950 Inner Jacket: • Flame-retardant gray PVC Shields: • Two polyester backed aluminum foil shields Drain Wire: • 24 AWG solid tinned copper is placed between the two shields Rip Cord: • Applied longitudinally under jacket Jacket: Data subject to change without notice. • Flame-retardant gray PVC Electrical Characteristics Packaging 26 AWG • 1000' reel (RL) • Bulk reels are available upon request Applications • T1/DS1 • DS1C • DS2 Features • Nominal 100 Ohm impedance • Dual shielded digital terminating cable is designed for switching and transmission equipment cabling for telephone central office • Shielding from EMI • Short twist length for better crosstalk performance 42 DC Resistance (max) 13.7 Ohms/100m (328ft) @ 20°C Mutual Capacitance (nom) nF/100m @ 1 kHz 5.25 Conductor Resistance Unbalance (max) Characteristic Impedance 5% Frequency (f): Compliances • Telcordia (Bellcore) analyzed the General Cable 4129 Series - Type 1249C Family of Central Office Cables to the criteria in Telcordia GR-137-CORE. Copies of the analysis report are available from General Cable upon request • UL & c(UL) Type CMR 4 6 12 16 20 25 28 32 50 Jacket Conductor Ohms 100 ± 15 1.0 MHz Shield Dual Insulation Drain Wire Rip Cord Capacitance Unbalance pF/100m Pr to Pr Pr to Ground 52.5 (max) 330 (max) Attenuation (nom) Frequency (f): dB/100m 0.772 MHz 1.024 MHz 1.576 MHz 3.156 MHz 4.224 MHz 2.1 2.5 3.0 4.3 4.9 Color Code Chart PAIR NO. TIP RING PAIR NO. TIP RING 1 2 White Blue 14 Black Brown White Orange 15 Black Slate 3 White Green 16 Yellow Blue 4 White Brown 17 Yellow Orange 5 White Slate 18 Yellow Green 6 Red Blue 19 Yellow Brown 7 Red Orange 20 Yellow Slate 8 Red Green 21 Violet Blue 9 Red Brown 22 Violet Orange 10 Red Slate 23 Violet Green 11 Black Blue 24 Violet Brown 12 Black Orange 25 Violet 13 Black Green Slate