Specifications

26
MULTI-FUNCTION LINE DRIVER
The Multi-Function Line Driver has been performance-tested using twisted-
pair cable with these characteristics:
Wire Gauge Capacitance Resistance
19 AWG 83 nf/mi. or 15.72 pf/ft.* 16.3 Ω/1000 ft. (53.5 Ω/km)
22 AWG 83 nf/mi. or 15.72 pf/ft.* 32.6 Ω/1000 ft. (107 Ω/km)
24 AWG 83 nf/mi. or 15.72 pf/ft.* 51.65 Ω/1000 ft. (169.5 Ω/km)
26 AWG 83 nf/mi. or 15.72 pf/ft.* 82.35 Ω/1000 ft. (270.2 Ω/km)
*Alternatively, 51.6 nf/km or 51.6 pf/m
If you use the Multi-Function LD MFLD with a different type of twisted-pair
cable, make sure that the cable has characteristics similar to, or better than,
those listed above (for example, lower capacitance or lower resistance).
Bench tests yield the following data-rate/maximum-distance results:
Data Rate Maximum Distance in miles (km)
in bps 19 AWG 24 AWG 26 AWG
38,400 6 (9.7) 3.5 (5.6) 2 (3.2)
19,200 9 (14.5) 5 (8) 3 (4.8)
9600 10 (16.1) 6 (9.7) 4 (6.4)
4800 11 (17.7) 7 (11.3) 5 (8)
1200 12 (19.3) 8 (12.9) 6 (9.7)
Many environmental factors can affect the maximum distances obtainable at a particular
site. Use this table as a general guideline only.
Appendix A: Cable Recommendations