Fluke 225C User Manual - Page 89

Ethernet Twisted Pair/10BaseT/100BaseT, Ethernet Twisted Pair Measurement, Connections

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Ethernet Twisted Pair/10BaseT/100BaseT Default probe setting 10:1. Use the Fluke 10:1 probe. 1 Connect the red probe to test tool input A 2 Connect the probe ground lead to the bus TD+ (RD+) 3 Connect the probe tip to the bus TD- (RD-) RJ-45 1 (3) 2 (6) TD+ (RD+) TD- (RD-) 6 Using The Bushealth Function Input Connections and Tested Signals Table 11. Ethernet Twisted Pair Tested Signal Properties Signal V-Level Data Rise Fall Jitter Signal Dist. Description Peak-Peak voltage Bit width Rise time as % of bit width Fall time as % of bit width Jitter distortion Signal distortion Figure 45. Ethernet Twisted Pair Measurement Connections Note Normally the Ethernet bus has continuous data traffic. Incidentally the bus may have no continuous data traffic. See Data Traffic on page 70. 79

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Using The Bushealth Function
Input Connections and Tested Signals
6
79
Ethernet Twisted Pair/10BaseT/100BaseT
Default probe setting 10:1. Use the Fluke 10:1 probe.
1
Connect the red probe to test tool input A
2
Connect the probe ground lead to the bus TD+
(RD+)
3
Connect the probe tip to the bus TD- (RD-)
TD+ (RD+)
TD- (RD-)
RJ-45
1 (3)
2 (6)
Figure 45. Ethernet Twisted Pair Measurement
Connections
Note
Normally the Ethernet bus has continuous data
traffic. Incidentally the bus may have no
continuous data traffic.
See Data Traffic on page
70.
Table 11. Ethernet Twisted Pair Tested Signal
Properties
Signal
Description
V-Level
Peak-Peak voltage
Data
Bit width
Rise
Rise time as % of bit width
Fall
Fall time as % of bit width
Jitter
Jitter distortion
Signal Dist.
Signal distortion