QSFP28 100G to
2*QSFP28 50G
High Speed Passive Direct Attached Copper Cable
Product Specifications
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Shenzhen Sinovo Telecom
Co.,Ltd
版权所有 侵权必究
Revision
Date
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Revision
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Revision Description
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Author
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2015-03-03
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A
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First released
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Fude Wang
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1
Product description
1.1
Meet SFF-8665 , IEEE802.3bj and P802.3by specifications.
1.2
System requirement (Connector & Cable System)
ITEM
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REQUIREMENT
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TEST CONDITON
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Data Rate per
Channel
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25.78125Gbps
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Mate connector to edge
card contacts, include
host board launched.
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Cable Length
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0.5m, 1m, 2m, 3m, 5m
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/
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Pin Assignment
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SFF-8665/8636 pin
function definition.
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/
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1.3
PCB Material is
M6 or higher, overall thickness is
1.0mm over pads.
2
Cable Specification
ITEM
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REQUIREMENT
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Jacket Color
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Black
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Jacket Material
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PVC,
FRNC, Meet RoHS and REACH requirement.
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Flame
Retardant Grade
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Meet UL CL2 and
CSA(or cUL) FT4 upward flame retardant grade.
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Core
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4 Pair
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Gauge
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30AWG or 26AWG
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Shielding
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Coverage≥85％.
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Cable
Diameter
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FRNC
26AWG
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FRNC
30AWG
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PVC 26AWG
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PVC
30AWG
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7.2
±0.3mm
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5.9±0.2mm
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6.7±0.3
mm
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5.4±0.2mm
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Cable
Assembly Length
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500±25mm
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500±25mm
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500±25mm
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500±25mm
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1000±30mm
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1000±30mm
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1000±30mm
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1000±30mm
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1500±30mm
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1500±30mm
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1500±30mm
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1500±30mm
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2000±30mm
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2000±30mm
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2000±30mm
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2000±30mm
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2500±30mm
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2500±30mm
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2500±30mm
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2500±30mm
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3000±30mm
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3000±30mm
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3000±30mm
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3000±30mm
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5000±50mm
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5000±50mm
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3
Electrical Performance
3.1
Signal integrity
ITEM
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REQUIREMENT
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TEST CONDITION
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|||||||
Differential
Impedance
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Cable
Impedance
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100-5/+10Ω
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Rise
time of 25ps(at the SMA)
(20 % - 80 %).
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||||||
Paddle
Card
Impedance
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100±10Ω
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||||||||
Cable
Termination
Impedance
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100±10Ω
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||||||||
Differential(Input/Output)Return
loss SDD11/SDD22
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16.5-2R√etfurn_loss(f)≥ 0.05≤f≤4.1
Where
f is the frequency in GHz Return_loss(f)
is the return loss at frequency f
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10MHz≤f ≤19GHz
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|||||||
Differential
to common-mode (Input/Output)Return loss SCD11/SCD22
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22-(20/25.78)f 0.01≤f≤12.89
Return_loss(f)≥
Where
f is the frequency in GHz
Return_loss(f) is the Differential
to common-mode return loss at frequency f
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10MHz≤f ≤19GHz
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|||||||
Common-mode
to Common-mode (Input/Output)Return loss SCC11/SCC22
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Return_loss(f)≥2dB 0.2≤f≤19 Where
f is the
frequency in GHz Return_loss(f) is the common-mode to common-mode return loss
at frequency f
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10MHz≤f ≤19GHz
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|||||||
Differential
Insertion Loss(SDD21 Max.)
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(Differential
InsertionLoss Max.)
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10MHz≤f ≤19GHz
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|||||||
F
AWG
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1.25G
Hz
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2.5GHz
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5.0GHz
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7.0GHz
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10Ghz
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12.89Gh
z
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30(1m)Max.
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5.7dB
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6.6dB
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7.7dB
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8.9dB
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9.6dB
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10.7dB
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|||
30(1.5m)Max.
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6.2dB
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7.0dB
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8.6dB
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9.5dB
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11.5dB
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13.4dB
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|||
30(2m)Max.
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6.6dB
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7.9dB
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9.3dB
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11.0dB
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13.5dB
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16.1dB
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30(2.5m)Max.
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7.3dB
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8.9dB
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10.7dB
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12.8dB
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15.6dB
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18.8dB
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||
30(3m)Max.
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8.5dB
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10.5dB
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13.2dB
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15.3dB
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18.5dB
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21.5dB
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||
26(1m)Max.
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5.5dB
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6.2dB
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7.0dB
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7.8dB
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8.7dB
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9.5dB
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||
26(1.5m)Max.
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5.8dB
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6.8dB
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8.4dB
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9.1dB
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10.3dB
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11.0dB
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||
26(2m)Max.
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6.1dB
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7.3dB
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9.2dB
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10.0dB
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11.1dB
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12.5dB
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||
26(2.5m)Max.
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6.4dB
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7.7dB
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10.4dB
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11.5
dB
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13.2dB
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15.0dB
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||
26(3m)Max.
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6.7dB
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8.2dB
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10.9dB
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12.4dB
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14.6dB
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16.5dB
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||
Note: Cable assembly measurements are to be made between TP1 and TP4 with cable assembly test
fixtures as illustrated in Figure 92–17. Cable assembly IL max. as
illustrated in Figure 92-11 and in Table4
excluding Test fixture
Insertion loss.
 |
||||||||
Insertion
Loss Deviation(ILD)
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-0.176*f - 0.7 ≤ ILD ≤ 0.176* f + 0.7
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50MHz≤f ≤19GHz
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||||||
Insertion Loss
Max. and
Min.for
Differential Pair
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(Insertion
Loss Max.-Insertion Loss Min.)/ Insertion Loss Max. ≤10%
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10MHz≤f ≤19GHz
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||||||
Differential to common-mode
Conversion Loss-Differential Insertion Loss(SCD21-SDD21)
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10 0.01≤f≤12.89
Conversion
_loss(f) – IL(f)≥
27-(29/22)f 12.89≤f﹤15.7
Wh6e.r3e 15.7≤f≤19
f is
the frequency in GHz Conversion_loss(f ) is the cable assembly differential
to common-mode conversion loss
IL(f) is
the cable assembly insertion loss
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10MHz≤f ≤19GHz
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MDNEXT(multiple disturber near-end crosstalk)
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10MHz≤f ≤19GHz
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|
Integrated Crosstalk
Noise(ICN)
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ICN≤8mV, 8≤
IL ≤
10.43dB;
ICN≤12.1-0.393*IL(mV),
10.43< IL ≤ 22.48dB
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10MHz≤f ≤19GHz
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AC
Couple
|
100nF
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Requirement of PRBS31 test.
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Intra
Skew
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10ps/m
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10MHz≤f ≤19GHz
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3.2
Other Electrical
Performance
ITEM
|
REQUIREMENT
|
TEST CONDITON
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Low Level Contact
Resistance
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80milliohm Max. from
initial.
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EIA-364-23,apply a maximum voltage of 20mV
and a current of 100mA.
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Insulation Resistance
|
10Mohm Min.
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EIA-364-21, AC 300V 1
minute.
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Dielectric Withstanding
Voltage
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No disruptive discharge.
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EIA-364-20,apply a voltage of 500VDC for 1 minute between adjacent
terminals
and between adjacent terminals and ground.
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4
Cable Assembly Environmental Performance
ITEM
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REQUIREMENT
|
TEST CONDITON
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Operating Temp. Range
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-20°C to +75°C
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Cable operating tem.
range.
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Storage Temp. Range
(in packed condition)
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-40°C to +85°C
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Cable storage temp. range
in packed condition.
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Thermal Cycling Non-Powered
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Pass electrical tests per 3.1 after stressing.
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EIA-364-32D, Method A, -25
to 90C, 100
cycles, 15 min. dwells
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Salt Spraying
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48 hours salt spraying
after shell
corrosive area less than 5％.
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EIA-364-26
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Mixed Flowing Gas
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Pass electrical tests per
3.1 after
stressing. (For connector
only)
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EIA-364-35 Class II,14
days.
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Operating ambient RH - non
condensing
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5% to 85%
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Cable
Operating ambient RH - non condensing. range.
|
5
Mechanical Performance
ITEM
|
REQUIREMENT
|
TEST CONDITON
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Vibration
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No evidence of physical damage
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Clamp & vibrate per EIA-364-28F,TC-VII, Test condition letter – D,
15 minutes in X,
Y & Z axis.
|
Cable Flex
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No evidence of physical damage
|
Twist
cable 180° (±90° from nominal position) for 100 cycles at 30 cycles per
minute with a 0.5kg load applied to the cable jacket.
Clamp position: 300mm.
|
Cable Plug Retention in
Cage
|
Pass electrical tests per 3.1 after stressing. 90N Min.
|
Cable
plug is clamped with the cable hanging vertically. A 90N load is applied
(gradually) to the cable jacket for a 1 minute duration. Force to be applied
axially with no damage to cage. Per SFF
8661 Rev 2.1
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Cable Retention in Plug
|
90N Min.
|
Cable
plug is fixtured with the bulk cable hanging vertically. A 90N axial load is
applied (gradually) to the cable jacket and
held for 1 minute. Per EIA-364-38B
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Mechanical Shock
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No evidence of physical
damage
|
Clamp and Shock per
EIA-364-27C,
TC-G,3 times in 6
directions, 100g, 6ms
|
Cable Plug Insertion
|
40N Max.
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Per SFF8661 Rev 2.1
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Cable Plug Extraction
|
30N Max.
|
Place axial load on
de-latch to de-latch
plug.Per SFF8661 Rev 2.1
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Insertion/Removal
tyCycles,Module/Cage
|
Proper function of latch
/ delatch after cycling
|
Insert and latch, then
remove with delatch
system. Per
SFF8661 Rev 2.1 - 100 cycles
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Latch Retention Force
|
90N Min. No evidence of
physical damage
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EIA-364-13
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Durability
|
100 cycles,No evidence of physical damage
|
EIA-364-09, perform plug &unplug cycles:Plug and receptacle mate
rate: 250times/hour. 100 times for QSFP28
module (CONNECTOR TO PCB)
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End
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