Seagate ST336754SS Cheetah 15K.4 SAS Product Manual - Page 80
shows the zero-length test load.
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Figure 26 shows the compliance interconnect test load. 10 nF 50 ohm Tx+ TCTF Probe points 10 nF 50 ohm Tx- SAS internal connector Figure 26. Compliance interconnect test load Figure 27 shows the zero-length test load. 10 nF 50 ohm Tx+ Probe points 10 nF 50 ohm Tx- SAS internal connector Figure 27. Zero-length test load Figure 28 shows an ISI loss example at 3.0 Gbps. S21 (dB) 0 Compliance interconnect magnitude response and ISI loss example for 3.0 Gbps ISI loss > 3.9 dB -10.9 dB 0.3 1.5 Sample compliance interconnect Frequency (GHz) 3.0 Figure 28. ISI loss example at 3.0 Gbps 70 Cheetah 15K.4 SAS Product Manual, Rev. B
70
Cheetah 15K.4 SAS Product Manual, Rev. B
Figure 26 shows the compliance interconnect test load.
Figure 26.
Compliance interconnect test load
Figure 27 shows the zero-length test load.
Figure 27.
Zero-length test load
Figure 28 shows an ISI loss example at 3.0 Gbps.
Figure 28.
ISI loss example at 3.0 Gbps
Tx+
Tx-
10 nF
50 ohm
50 ohm
Probe
points
SAS internal connector
TCTF
10 nF
Tx+
Tx-
10 nF
50 ohm
50 ohm
Probe
points
SAS internal connector
10 nF
ISI loss
> 3.9 dB
-10.9 dB
Frequency (GHz)
Sample compliance interconnect
0
3.0
1.5
0.3
S
21
(dB)
Compliance interconnect magnitude response and
ISI loss example for 3.0 Gbps