HP 800 HP DTC Cabling and Racking Guide - Page 81

8 DTC and standard cables DTC and standard cables The DTC 72MX and DTC 16xx family provide RS-232-D or RS-423 ports with RJ45, DB25 or Telco 50-pin connectors. The DTC units support the distances provided by the RS-232/RS-423 standards, given in the table below. Additionally, HP has tested, in favourable environmental conditions, the distances given in the final column of the table below. Depending upon your environment, the maximum usable distance will fall between these two figures. Conductors Maximum distance defined by standard RS-232 3 to 5 15m or 50ft RS-423 4 to 6 200m or 650ft Maximum tested distance 70m or 230ft 200m or 650ft Shielded cables You can use shielded cables to connect the 8-port MDP, or 8-port DDP, to a DTC unit via the 62-pin DTC connector or the Telco 50-pin connector. Note You cannot use shielded cables to connect the 24-port RJ45 DDP, the 16-port RJ45 DDP, or the 8-port RJ45 breakout panel, to a DTC unit. Combining different signal types in the same cable bundle RS-232 and 10BaseT 10BaseT and RS-232 signals can run on twisted pairs enclosed in the same cable bundle without interference to either signal type. Combining 10BaseT and RS-232 signals is supported at the specified maximum distance of RS-232. RS-232 and RS-423 and telephone cables RS-232 and RS-423 cannot share the same cable bundle with telephone cables. RS-423 and 10BaseT 10BaseT and RS-423 signals can run on twisted pairs enclosed in the same cable bundle without interference to either signal type. Combing 10BaseT and RS-423 signals is supported at the lowest value of the specified maximum distance of RS-423 or 10BaseT. 75