Seagate ST3300656SS Manuale Utente
72
Cheetah 15K.6 SAS Product Manual, Rev. A
Figure 21 shows the zero-length test load.
Figure 21.
Zero-length test load
Figure 22 shows an ISI loss example at 3.0 Gbps.
Figure 22.
ISI loss example at 3.0 Gbps
Figure 23 shows an ISI loss example at 1.5 Gbps.
Figure 23.
ISI loss example at 1.5 Gbps
Tx+
Tx-
10 nF
50 ohm
50 ohm
Probe
points
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
ISI loss
> 2.0 dB
Frequency (GHz)
Sample compliance interconnect
0
1.5
0.75
0.15
S
21
(dB)
Compliance interconnect magnitude response and ISI
loss example for 1.5 Gbps
-5.4 dB