
BRAINS
SNAP
ANALOG AND DIGITAL
DATA
SHEET
Form 787-000718
page 6/19
Opto22 43044 Business Park Drive Temecula, CA 92590 Phone: (909) 695-3000 (800) 321-OPTO Fax: (909) 695-3095 Internet: www.opto22.com
Inside Sales: (800) 452-OPTO Product Support: (800) TEK-OPTO (909) 695-3080 Fax: (909) 695-3017 E-mail: support@opto22.com FaxBack: (800) 474-OPTO
Specifications
Serial Communication Cables
The following cables are recommended for RS-485/422 serial communications. 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,
rather than the shield, for 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)