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Data Communications Overview

StandardCharacteristics
Range Mechanical Functional Electrical Max. Data Rate
EIA/ TIAEurope/ Internat. EIA/ TIAEurope/ Internat. EIA/ TIAEurope/ Internat.
RS232/ V.24 15 m RS232 ISO-2110 RS232 V.24 RS232 V.28 64 kbps
RS449/ V.36 1.2 km RS449 ISO-4902 RS449 V.36 RS423 Unbalanced V.10/ X.26 Unbalanced 20 kbps
RS422 BalancedV.11/ X.27 Balanced10 Mbps
V.35 Not defined   ISO-2593   V.35   Data and timing balanced (appendix 2) Undefined
V.28 Control unbalanced
X.21 1.2 km   ISO-4903   X.21   V.10/ X.26 Unbalanced 20 kbps
V.11/ X.27 Balanced10 Mbps
RS530 1.2 km RS232   RS530   RS423 Unbalanced   20 kbps
RS422 Blanaced10 Mbps
RS485 1.2 km Not Defined   RS485   3-state RS422 Balanced   10 Mbps

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