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1
Using InfiniiMax III+ Series Probes
Slew Rate Requirements for Different Technologies
The following table shows the slew rates for several different technologies. The
maximum allowed input slew rate is 18 V/ns for single-ended signals and 30 V/ns
for differential signals.
different technologies is much less that of the probe.
Table 6
Slew Rate Requirements
Name of Technology
PCI Express (3GIO)
RapidIO Serial 3.125Gb
10GbE XAUI (4x3.125Gb)
1394b
Fibre Channel 2125
Gigabit Ethernet 1000Base-CX YES
RapidIO 8/16 2Gb
Infiniband 2.5Gb
HyperTransport 1.6Gb
SATA (1.5Gb)
USB 2.0
DDR 200/266/333
PCI
AGP-8X
* The probe specification is 18 V/ns
† The probe specification is 30 V/ns
30
Table 6
Differential
Max
Signal
Single-Ended
Slew Rate
(V/ns)
YES
9.6
YES
8.0
YES
8.0
YES
8.0
YES
8.0
7.8
YES
7.2
YES
4.8
YES
4.0
YES
1.3
YES
0.9
NO
7.2
NO
4.3
NO
3.1
shows that the maximum required slew rate for the
Max
Driver Min Edge
Differential
Rate (20%-80%
*
†
Slew Rate
ps)
(V/ns)
19.2
50
16.0
60
16.0
60
16.0
60
16.0
75
15.5
85
14.4
50
9.6
100
8.0
113
2.7
134
1.8
375
n/a
300
n/a
500
n/a
137
InfiniiMax III+ Series Probes User's Guide
Max Transmitter
Level (Diff V)
1.6
1.6
1.6
1.6
1
2.2
1.2
1.6
1.5
0.6
1.1
3.6
3.6
0.7
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