Description
Parameters
| Features | Application |
| Compatible with IEEE 802.3bj and IEEE 802.3cd. | Switches, servers and routers. |
| Wire AWG: AWG30, AWG24. | Storage area networks. |
| Optimized construction to minimize insertion loss and cross talk. | Data Center networks. |
| Straight and break out assembly configurations available. | High performance computing. |
| Customized cable braid termination limits EMI radiation. | Telecommunication and wireless infrastructure. |
| Parameter | Symbol | Min | Typical | Max. | Unit | Note |
| Differential Impedance | TDR | 90 | 100 | 110 | Ω | |
| Insertion Loss | SDD21 | -16.06 | dB | At 13.28GHz | ||
| Differential Return Loss | SDD11 SDD22 | See 1 | dB | At 0.05 to 4.1 GHz | ||
| See 2 | At 4.1 to 19 GHz | |||||
| Common-mode to common-mode output return loss | SCC11 SCC22 | -2 | dB | At 0.2 to 19 GHz | ||
| Differential to common-mode return loss | SCD11 | See 3 | dB | At 0.01 to 12.89 GHz | ||
| SCD22 | See 4 | At 12.89 to 19 GHz | ||||
| Differential to common Mode Conversion Loss | SCD21-IL | -10 | dB | At 0.01 to 12.89 GHz | ||
| See 5 | At 12.89 to 15.7 GH | |||||
| -6.3 | At 15.7 to 19 GHz |
Notes:
1.Reflection Coefficient given by equation SDD11(dB) < -16.5 + 2 × SQRT(f ), with f in GHz
2.Reflection Coefficient given by equation SDD11(dB) < -10.66 + 14 × log10(f/5.5), with f in GHz
3.Reflection Coefficient given by equation SCD11(dB) < -22 + (20/25.78)*f, with f in GHz
4.Reflection Coefficient given by equation SCD11(dB) < -15 + (6/25.78)*f, with f in GHz
5.Reflection Coefficient given by equation SCD21(dB) < -27 + (29/22)*f, with f in GHz
QSFP-DD passive copper cable assembly feature eight differential copper pairs,providing four data transmission channels at speeds up to 56Gbps(PAM4) per channel,and meets 400G Ethernet and InfiniBand Enhanced Data Rate(EDR) requirements.Available in a broad rang of wire gages-from 28AWG through 30AWG-this 400G copper cable assembly features low insertion loss and low cross talk. QSFP-DD uses PAM4 signals for transmission, which doubles the rate. However, there are more stringent requirements for cable insertion loss. For detailed requirements, please see High Speed Characteristics.
| Features | Application |
| Compatible with IEEE 802.3bj and IEEE 802.3cd. | Switches, servers and routers. |
| Wire AWG: AWG30, AWG24. | Storage area networks. |
| Optimized construction to minimize insertion loss and cross talk. | Data Center networks. |
| Straight and break out assembly configurations available. | High performance computing. |
| Customized cable braid termination limits EMI radiation. | Telecommunication and wireless infrastructure. |
| Parameter | Symbol | Min | Typical | Max. | Unit | Note |
| Differential Impedance | TDR | 90 | 100 | 110 | Ω | |
| Insertion Loss | SDD21 | -16.06 | dB | At 13.28GHz | ||
| Differential Return Loss | SDD11 SDD22 | See 1 | dB | At 0.05 to 4.1 GHz | ||
| See 2 | At 4.1 to 19 GHz | |||||
| Common-mode to common-mode output return loss | SCC11 SCC22 | -2 | dB | At 0.2 to 19 GHz | ||
| Differential to common-mode return loss | SCD11 | See 3 | dB | At 0.01 to 12.89 GHz | ||
| SCD22 | See 4 | At 12.89 to 19 GHz | ||||
| Differential to common Mode Conversion Loss | SCD21-IL | -10 | dB | At 0.01 to 12.89 GHz | ||
| See 5 | At 12.89 to 15.7 GH | |||||
| -6.3 | At 15.7 to 19 GHz |
Notes:
1.Reflection Coefficient given by equation SDD11(dB) < -16.5 + 2 × SQRT(f ), with f in GHz
2.Reflection Coefficient given by equation SDD11(dB) < -10.66 + 14 × log10(f/5.5), with f in GHz
3.Reflection Coefficient given by equation SCD11(dB) < -22 + (20/25.78)*f, with f in GHz
4.Reflection Coefficient given by equation SCD11(dB) < -15 + (6/25.78)*f, with f in GHz
5.Reflection Coefficient given by equation SCD21(dB) < -27 + (29/22)*f, with f in GHz
Company Info
Service Support
Sub-link
Add：1F/2F/3F/4F Deliwei Industrial Park, Longhua, Shenzhen, China 518109
Tel：+86-755-29048607/85250091/32939610/32939620
Fax：+86-755-29048624
Email：sales@opticres.com
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