communication on four links simultaneously. The SFP+ links are designed for data rates
up to 10 Gbps each. Passive breakout cables have no signal amplification built into the
cable assembly. There are two types of DAC cables:
•
Passive DAC cables have no signal amplification built into the cable assembly.
Table 25 on page 66 describes the passive QSFP+ DAC breakout cable specifications.
•
Active DAC cables have signal amplification and equalization built into the cable
assembly. Table 26 on page 67 describes the passive QSFP+ DAC breakout cable
specifications.
Table 25: QSFP+ DAC Passive Breakout Cable Specifications
SpecificationsProduct SKU
40-Gbps full-duplex serial transmissionRateQFX-QSFP-DACBO-1M
Copper pigtailConnector type
3.3 VSupply voltage
–40
°
C to 85
°
CStorage temperature
TwinaxCable type
30 AWGWire AWG
1 in. (2.54 cm)Minimum cable bend radius
100 ohmsCable characteristic impedance
4.3 nsec/mTime delay
1 m (3.3 ft)Length
Copyright © 2014, Juniper Networks, Inc.66
EX4600 Switch Hardware Guide
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