Huawei SFP-10G-CU3M High-Speed Copper Cable Sample Test Report

High-speed copper cables, also known as Direct Attach Copper (DAC) cables, integrate connectors and copper cables into one unit for easy use. They can be directly connected to the optical ports of devices. The key difference between high-speed copper cables and AOC (Active Optical Cables) is that high-speed copper cables use copper cores for signal transmission, while AOC cables transmit signals through optical fibers.

Huawei offers the SFP-10G-CU3M high-speed copper cable, which supports short-distance 10G Ethernet applications. Moduletek Laboratory has tested this sample product to help you fully understand its performance indicators and actual on-switch application effect.

1. Product Overview

The Huawei SFP-10G-CU3M high-speed copper cable supports a link length of 3 meters for 10G transmission. It is a passive twinax cable with a characteristic impedance of 100Ω, compliant with SFF-8472 and SFF-8431 standards, and designed for indoor in-rack connections. The official key parameters and physical appearance of the cable are as follows:

Table 1 Official Specifications

Model	Length	Electrical Attributes	Bend Radius	Connector Type	Part Code
SFP-10G-CU3M	3m	Passive	25mm	SFP+<->SFP+	02310MUP

Figure 1 Physical Image

2. On-Switch Identification Test

The SFP-10G-CU3M high-speed copper cable was connected to a Huawei S6700-24-EI switch. The cable achieved normal LINK status with the port indicator illuminated. The switch correctly identified the complete information of the cable at both ends, including cable type, model, manufacturer name, serial number, and transmission distance, with no alarms reported.

Table 2 On-Switch Identification

Item	Information Read by Switch
Port Indicator
LINK
Identification

3. Key Parameter Testing

All tests were conducted at room temperature (25℃) with standard calibration procedures. The test results are as follows:

3.1 S-Parameter Testing

A network analyzer was used to test the S-parameters of the cable at both ends, following IEEE 370-2020 standard with TRL calibration to ensure measurement accuracy. The test results are shown below:

Table 3 S-Parameter Curves

Direction	Direction Reflection curve (SDD11)	Insertion loss curve (SDD21)
A end to B end
B end to A end

Table 4 S-Parameter Data

Direction	SDD11(dB)	IL(dB)
A to B	-20.278	9.576
B to A	-16.159	9.443

3.2 Impedance Testing

An oscilloscope was used to test the differential impedance of the cable at both ends. The standard differential impedance for 10G SFP+ DAC cables is 100±5Ω, and the test results are shown below:

Table 5 Cable Impedance Diagrams

Cable End	Differential Signal Direction TX	Differential Signal Direction RX
A Bend
B Bend

Table 6 Cable Impedance Data

Cable End	Differential Signal Direction	Maximum (ohm)	Minimum (ohm)	Average (ohm)
A end	TX	105.11	97.61	101.36
A end	RX	106.76	97.89	102.32
B end	TX	104.22	97.84	101.03
B end	RX	107.00	98.18	102.58

Actual test results confirm that all key parameters of the SFP-10G-CU3M cable meet Huawei’s official specifications. The differential impedance values are within the standard 100±5Ω range, and the S-parameters comply with IEEE 370-2020 test requirements, ensuring stable 10G transmission performance.

Moduletek sincerely serves you!

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Huawei SFP-10G-CU3M High-Speed Copper Cable Sample Test Report