D-Link DE-1824EI User Guide - Page 85

Daisy-chain Cable

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Daisy-chain Cable 10BASE-T Stackable Hubs The hubs use ordinary Category 5 twisted-pair cable with RJ-45 connectors on each end for stacking. All four pairs of the eight-wire cable are used. A 30cm daisy-chain cable is included with the hub; this information is included in case you want to make your own, longer cable. Daisy-chain cables may be of any length, provided the distance between the first hub and the last hub in the stack is 100 meters or less. Contact 1 2 3 4 5 6 7 8 Daisy Chain IN Link IN Link OUT DataManagement+ Management- Data+ IDID+ Daisy Chain OUT Link OUT Link IN Data- Management+ Management- Data+ IDID+ NOTE: Pins 1/2, 3/6, 4/5, and 7/8 must be pairs, splitting the cable will most likely cause errors. RS-232 (DB9) Pin Specification The RS-232 serial port of the hub uses a 9-pin female connector. The port can be connected to a VT-100 type terminal, a PC, or a workstation emulating a VT-100 terminal. The connection can be either local, or remote through a modem. For a remote connection, a modem cable with a 9-pin male connector on the hub side is needed. The figures below show the connections necessary for local and remote connection to 9-pin and 25-pin RS-232 devices. Cables and Connectors D-3

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10BASE-T Stackable Hubs
Cables and Connectors
D-3
Daisy-chain Cable
The hubs use ordinary Category 5 twisted-pair cable with RJ-45 connectors
on each end for stacking.
All four pairs of the eight-wire cable are used.
A
30cm daisy-chain cable is included with the hub; this information is included
in case you want to make your own, longer cable.
Daisy-chain cables may be of any length, provided the distance between the
first hub and the last hub in the stack is 100 meters or less.
Contact
Daisy Chain
IN
Daisy Chain
OUT
1
Link IN
Link OUT
2
Link OUT
Link IN
3
Data-
Data-
4
Management+
Management+
5
Management-
Management-
6
Data+
Data+
7
ID-
ID-
8
ID+
ID+
NOTE
:
Pins 1/2, 3/6, 4/5, and 7/8 must be pairs,
splitting the cable will most likely cause errors.
RS-232 (DB9) Pin Specification
The RS-232 serial port of the hub uses a 9-pin female connector. The port
can be connected to a VT-100 type terminal, a PC, or a workstation
emulating a VT-100 terminal. The connection can be either local, or remote
through a modem. For a remote connection, a modem cable with a 9-pin
male connector on the hub side is needed. The figures below show the
connections necessary for local and remote connection to 9-pin and 25-pin
RS-232 devices.