2007194-1 Datasheet, PDF (5/5 Pages) Tyco Electronics – SFP 1X1 CAGE ASSEMBLY PCI, SOLDER TAILS, EXTERMINAL EMI SPRINGS

High Speed Electrical
Measurements
Pluggable Input / Output Solutions
SFP+ Copper Cable Assemblies (Continued)
Tyco Electronics SFP+ passive
copper cable assemblies are
fully compliant to SFF-8431.
WDP Measurements
WDP measurements listed
in the table below are for set
lengths at two different
cable gauges. Any cable
with the same gauge and a
shorter length than the
length listed will have a
lower dWDP number.
Measurements were taken
with an input signal that had
pre-emphasis applied to
achieve a WDPi of 2.4 dBe
while using the SFP+
Module Compliance
Board (MCB) and Host
Compliance Board (HCB).
A copper cable assembly
will be compliant with the
SFP+ MSA Rev 3.2 if the
dWDP number is less than
6.75 dBe.
WDP Specifications
Cable Gauge
Spec Limit
30 AWG
28 AWG
26 AWG
24 AWG
Cable Length
—
3 meter
5 meter
6 meter
7 meter
WDPo (dB)
—
6.16
7.49
8.36
7.44
WDPi (dB)
—
2.4
2.4
2.4
2.4
dWDP
6.75
3.76
5.09
5.96
5.04
VMA and VCR Measurements
VMA and VCR measure-
ments listed in the table
below are for the set
lengths. To be compliant
with SFF 8431 Rev 3.2 the
VMA measurements must
be less than 4.5 dB while
testing with the module
compliance test board.
The VCR measurement is
determined by computing
VMA and NEXT RMS
voltage measurements.
The VCR measurement
must be greater than 33 dB
to be SFF-8431 Rev 3.2
compliant.
VMA and VCR Specifications
Cable Gauge
Spec Limit
30 AWG
28 AWG
26 AWG
24 AWG
Cable Length
—
3 meter
5 meter
6 meter
7 meter
VMA (dB)
4.5
3.03875
3.93609
3.94267
2.86154
VCR (dB)
33
40.6572
38.53281
35.82669
37.79826
For additional SFP+ cable assembly technical information, see customer drawing 2032237.
24
Catalog 1773408-1
Revised 2-09
www.tycoelectronics.com
Note: All part numbers are RoHS compliant.
Dimensions are in millimeters
and inches unless otherwise
specified. Values in brackets
are metric equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
South America: 55-11-2103-6000
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-8706-080-208