. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. MANUFACTURING LEAD-COVERED TELEPHONE CABLE 327 The specified limiting degree of unbalance of the capacitance in quadded cable is indicated in Table 2, and Fig. 7 is a diagram showing the capacitances involved and a brief explanation of them. AGROUND. ,1'GROUND â ^GROUND Fig. 7âDiagram showing the capacities involved in capacity unbalances between circuits TABLE 2 Capacitance in per mile Capacitance Unbalance in per 500 ft. length Pair Quad Side to Side Phan
. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. MANUFACTURING LEAD-COVERED TELEPHONE CABLE 327 The specified limiting degree of unbalance of the capacitance in quadded cable is indicated in Table 2, and Fig. 7 is a diagram showing the capacitances involved and a brief explanation of them. AGROUND. ,1'GROUND â ^GROUND Fig. 7âDiagram showing the capacities involved in capacity unbalances between circuits TABLE 2 Capacitance in per mile Capacitance Unbalance in per 500 ft. length Pair Quad Side to Side Phantom to Side Phantom to Phantom Av. .068 Av. .112 Av. 30 Max. 100 Av. 120 Max. 200 Av. 60 Max. 600 1 Class I UnbalancesâPhantom to Side 1, 2, 3 and 4 represent the four wires of a quad, of which 1 and 2 form one pair and 3 and 4 form the other pair. Unbalance between Phantom and Side 1-2 = 2[Ci_3+Ci_4 â(C2_j+C2-4)]+GiâG2 Unbalance between Phantom and Side 3-4 = 2[Ci_3+C2-3 â(Ci_i+C2_4)i]+G3 âG4 Class II UnbalancesâSide to Side 1, 2, 3 and 4 represent the same as in Class I Unbalances. Unbalance between Side 1-2 and Side 3-4 = Ci_4+C2-3 â(Ci_3+C2_4) 1 Capacitance Unbalances involve differences of Direct Capacitances. See G. A. Campbell, Bell System Technical Journal, July Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original American Telephone and Telegraph Company. [Short Hills, N. J. , etc. , American Telephone and Telegraph Co. ]
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
