Juniper EX3200 Series, Руководство по оборудованию, Страница: 135 / 310

NOTE: We recommend that you use only SFP+ DAC cables purchased from
Juniper Networks with your Juniper Networks device.
CAUTION: If you face a problem running a Juniper Networks device that uses
a third-party optic or cable, the Juniper Networks Technical Assistance Center
(JTAC) can help you diagnose the source of the problem. Your JTAC engineer
might recommend that you check the third-party optic or cable and potentially
replace it with an equivalent Juniper Networks optic or cable that is qualified
for the device.
The cables are hot-removable and hot-insertable: You can remove and replace them
without powering off the switch or disrupting switch functions. A cable comprises a
low-voltage cable assembly that connects directly into two 10-Gigabit Ethernet ports,
one at each end of the cable. The cables use high-performance integrated duplex serial
data links for bidirectional communication and are designed for data rates of up to
10 Gbps.
Table 45 on page 113 describes the cable specifications.
Table 45: SFP+ Direct Attach Copper Cable Specifications
Value Specification Model Number
10-Gbps full-duplex serial transmission Rate EX-SFP-10GE-DAC-1M
SFP+ passive Twinax cable assembly Connector type
3.3 V Supply voltage
0.57 W Power consumption (per end)
–40° F (–40° C) through 185° F (85° C) Storage temperature
Twinax Cable type
30 AWG Wire AWG
1 in. (2.54 cm) Minimum cable bend radius
100 ohms Cable characteristic impedance
2% maximum Crosstalk between pairs
1.31 nsec/ft Time delay
3.3 ft (1 m) Length
113 Copyright © 2016, Juniper Networks, Inc.
Chapter 8: Transceiver and Cable Specifications