OPTO 22 G4LC32ISA-LT, Руководство пользователя

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G4LC32ISA-LT User’s Guide B-1
CHAPTER 2 APPENDIX B
CABLE AND CONNECTOR
SPECIFICATIONS
SERIAL COMMUNICATION CABLES
The following cables are recommended for both RS-232 and RS-485/422 serial communication.
Although you may elect to use other cables, keep in mind that low capacitance (less than 15 pF/ft.)
is important for high-speed digital communication links.The cables listed below are all 24-gauge,
7x32 stranded, with 100-ohm nominal impedance and a capacitance of 12.5 pF/ft.
Select from the following two-, three-, and four-pair cables, depending on your application needs.
All will yield satisfactory results. It is recommended that you choose a cable with one more pair than
your application requires. Use one of the extra wires, not the shield, as the common.
Two-Pair: • Belden P/N 8102 (with overall shield)
• Belden P/N 9729 (individually shielded)
• Belden P/N 8162 (individually shielded with overall shield)
• Manhattan P/N M3475 (individually shielded with overall shield)
• Manhattan P/N M39249 (individually shielded with overall shield)
Three-Pair: • Belden P/N 8103 (with overall shield)
• Belden P/N 9730 (individually shielded)
• Belden P/N 8163 (individually shielded with overall shield)
• Manhattan P/N M3476 (individually shielded with overall shield)
• Manhattan P/N M39250 (individually shielded with overall shield)
Four-Pair: • Belden P/N 8104 (with overall shield)
• Belden P/N 9728 (individually shielded)
• Belden P/N 8164 (individually shielded with overall shield)
• Manhattan P/N M3477 (individually shielded with overall shield)
• Manhattan P/N M39251 (individually shielded with overall shield)