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Signals are coupled between the transmission line and the transmit/receive
circuits to provide a level of rejection to normal AC power frequency
interference and other noise sources. Information is transferred on the TIWAY I
twisted pair media asynchronously at user selectable data rates of 110, 150, 300,
600, 1200, 2400, 4800, 9600, 19.2K, 38.4K, 57.6K, and 115.2K bits per second, in
half-duplex mode and NRZI encoding. The Local Line interface does not support
synchronous operation or NRZ.
UNILINK HOST ADAPTER
USER MANUAL
THE TIWAY I NETWORK PORTS
30
19.2 k bps
25
38.4 k bps
20
57.6 k bps
15
115.2 k bps
10
8
7
6
5
4
115.2 k bps or lower
3
2
1
5
Cable Unit Loading (Number of Stations)
Figure 4–3 Number of Local Line Secondaries vs.
Cable Distance
4-4
10
20
50
100
Belden 9860
Belden 9271
250
I003648
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