1000BASE-T/100BASE-TX/10BASE-T Physical Layer Compliance Tests Manual
Intel Confidential 59
100Base-TX Differential Input Signals (BER)
15 100Base-TX Differential Input Signals
(BER)
ANSI Section 9.2.1
15.1 Test Purpose
To measure the Bit Error Rate (BER) of the UUT over CAT5 cable with specified insertion loss.
15.2 Specification
“The differential transmitted signals on TX+/- must meet the requirements of section 9.1 of the
ANSI X3.263 specification.”
1
See sections 8 - 14 of this document. The receiver shall have a bit
error rate of less than .
This requirement can be accomplished by performing receive bit error rate tests with specification
compliant Category 5 cables across a range of lengths from approximately 1 meter to greater than
100 meters (maximum specification). Insertion loss measurements and propagation delay
measurements have shown high-quality Category 5 cable ranging from 115 m to 130 m may be
equal to a maximum specification cable (depending on the vendor and the cable manufacturing lot).
See Appendix E for details on constructing LAN cables.
Figure 15-1. Differential Input Signals
2
15.3 Test Equipment
•
Transmit computer with a Network Interface Card (NIC) or LAN On Motherboard (LOM)
running gigconf.exe
•
Host computer running gigconf.exe
1. ANSI X3.263-1995, p 32.
10
8–
RX+
RX -
TX+
TX -
Transmitter
Receiver
(UUT)
Twisted-Pair
Cable
2. Based on ANSI X3.263, p 32, figure 15.
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