User manual

T1 Modem Bank
96
Restrictions on Daisy Chain Cable Lengths
The maximum length of a daisy chain is dependent upon the synchronous data rate. Table 8 lists the maximum
cumulative daisy chain cable lengths for various baud rates. For example, to run a synchronous line at 10 megabaud,
the total length of all daisy chain cables for that synchronous line may not exceed 30 feet. Thus, a single T1 Modem
Bank could be placed 30 feet from the EPC/X host adapter, or six T1 Modem Bank units could be spaced at 5 foot
intervals and still operate at 10 megabaud.
Table 8 Daisy Chain Cable Length vs. Baud Rate
Baud Rate Maximum Cable Length
(24AWG Twisted Pair, 12 pF/foot)
0 - 460K
0 - 1.2M
0 - 2.5M
0 - 5M
0 - 10M
2000 feet
1000 feet
300 feet
120 feet
30 feet