Table 2-1: Standard Rj45 Wiring Colour Codes For "Straight Through" Cables - evertz 7800 Manual

7800 MultiFrame Manual
7800FC VistaLINK Frame Controller
®
The straight-through RJ-45 cable can be purchased or can be constructed using the pinout information in
Table 2-1. A colour code wiring table is provided in Table 2-1 for the current RJ-45 standards (AT&T 258A
or EIA/TIA 258B colour coding shown). Also refer to the notes following the table for additional wiring
guide information.
Pin #
Pin 1
1
2
3
4
5
6
7
8

Table 2-1: Standard RJ45 Wiring Colour Codes for "Straight Through" Cables

Note the following cabling information for this wiring guide:
•
Only two pairs of wires are used in the 8-pin RJ-45 connector to carry Ethernet signals
•
Even though pins 4, 5, 7 and 8 are not used, it is mandatory that they be present in the cable
•
10Base-T, 100Base-TX and 1000Base-TX use the same pins, a crossover cable made for one will also
work with the other
•
Pairs may be solid colours and not have a stripe
•
Category 5 cable must use Category 5 rated connectors
The maximum cable run between the 7800FC and the supporting hub is 300 ft (100 m). The maximum
combined cable run between any two end points (i.e. 7800FC and PC/laptop via network hub) is 675 feet
(205 m).
Devices on the Ethernet network continually monitor the receive data path for activity as a means of
checking that the link is working correctly. When the network is idle, the devices also send a link test
signal to one another to verify link integrity. The 7800FC rear panel is fitted with two LEDs to monitor the
Ethernet connection.
10/100/1000: This LED is ON and amber when a 1000Base-TX link is last detected. This LED is ON
and green when a 100Base-TX link is last detected. The LED is OFF when a 10Base-T
link is last detected (the LINK LED is ON). Upon power-up the LED is OFF as the last
detected rate is not known and therefore defaults to the 10Base-T state until rate detection
is completed.
LN/ACT: This dual purpose Green LED indicates that the 7800FC has established a valid linkage to
its hub, whether the 7800FC is sending or receiving data. This LED will be ON when the
7800FC has established a good link to its supporting hub. This gives you a good indication
that the segment is wired correctly. The LED will BLINK when the 7800FC is sending or
receiving data. The LED will be OFF if there is no valid connection.
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Signal EIA/TIA 568A
Transmit + White/Green
Transmit – Green/White or White
Receive + White/Orange
N/A Blue/White or Blue
N/A White/Blue
Receive – Orange/White or Orange
N/A White/Brown
N/A Brown/White or Brown
AT&T 258A or
EIA/TIA 568B
White/Orange
Orange/White or Orange
White/Green
Blue/White or Blue
White/Blue
Green/White or Green
White/Brown
Brown/White or Brown
Revision 1.0
10BaseT
or 100BaseT
X
X
X
Not used (required)
Not used (required)
X
Not used (required)
Not used (required)