FieldServer Canatal Satchnet Driver FS-8700-59 - Manual (Page 5)

FS-8700-59 Canatal Driver Manual Page 5 of 19
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3.1 Connection Notes
Set Jumper 16, 17 and 18 on the board to position 2-3
3.1.1 Interconnecting Cable Characteristics
The interconnecting cable may be composed of twisted or untwisted pair (flat cable) possessing the characteristics
below.
 Conductor Size: The interconnecting cable shall be composed of two wires of a 24 AWG or larger
conductor for solid or stranded copper wires, or for non-copper conductors with sufficient size to yield a
DC wire resistance not to exceed 30 ohms per 1000 feet per conductor.
 Mutual Pair Capacitance: The capacitance between the two wires in the wire pair shall not exceed 20
picofarads per foot and the value shall be reasonably uniform over the length of the cable.
 Stray Capacitance: The capacitance between wires in the cable sheath, with all wires connected to ground
shall not exceed 40 picofarads per foot and shall be reasonably uniform over the length of the cable.
 Pair-to-Pair Balanced Crosstalk: The balanced crosstalk from one wire pair to any other pair in the same
cable sheath shall have a minimum value of 40 decibels of attenuation measured at 150 kilohertz.
An interconnecting cable meeting these specifications will result in a transmission line with nominal characteristic
impedance in the order of 100 ohms to frequencies greater than 100 kilohertz and a DC series loop resistance not
exceeding 240 ohms.