The Multi-Function LD Card has been performance-tested using twisted-pair cable with these
characteristics:
Wire Gauge
Capacitance
Resistance
19 AWG
22 AWG
24 AWG
26 AWG
83 nf/mi. or 15.72 pf/ft.
16.3 ohm/1000 ft. (53.5 ohm/km)
32.6 ohm/1000 ft. (107 ohm/km)
51.6 ohm/1000 ft. (169.5 ohm/km)
82.4 ohm/1000 ft. (270.2 ohm/km)
83 nf/mi. or 15.72 pf/ft.
83 nf/mi. or 15.72 pf/ft.
83 nf/mi. or 15.72 pf/ft.
If you use the Multi-Function LD Card with a differnt 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
in bps
19 AWG
22 AWG
24 AWG
26 AWG
Maximum Distance in miles (km)
57,600
38,400
28,800
19,200
14,400
9600
7200
4800
3600
2400
1800
1200
12 (19.3)
7 (11.3)
5.3 (8.5)
4 (6.4)
13 (20.9)
7.5 (12.1)
6.2 (10)
4.2 (6.8)
14 (22.5)
8 (12.9)
6.6 (10.6)
4.6 (7.4)
16 (25.7)
8.5 (13.7)
7 (11.3)
5.1 (8.2)
17 (27.4)
11 (17.7)
9.2 (14.8)
6.5 (10.5)
18.5 (29.8)
13 (20.9)
10.4 (16.7)
7.5 (12.1)
19 (30.6)
19.5 (31.4)
20 (32.2)
20.5 (33)
20.5 (33)
20 (32.2
8 (12.9)
8.8 (14.2)
8.8 (14.2)
9 (14.5)
8.9 (14.3)
8.9 (14.3)
11.4 (18.3)
15 (24.1)
15 (24.1)
11.5 (18.5)
11.6 (18.7)
15 (24.1)
14.5 (23.3)
11.5 (18.5)
11.3 (18.2)
10.9 (17.5)
14 (22.5)
13.5 (21.7)
