Test Report For Moduletek QSFP-40G-SR4-C-G11 Optical Module

Moduletek has launched the QSFP-40G-SR4-C-G11 multimode optical module for 40G Ethernet applications. Moduletek Laboratory conducted sample testing on this model, allowing users to clearly understand its core performance indicators and actual operating effect on network devices.

1. Product Description

The core performance parameters and physical appearance of the QSFP-40G-SR4-C-G11 module are shown in the table below.

Table 1 Core Performance Indicators

Physical Layer Standard	Maximum Transmission Distance(m)	Operating Temperature Range(℃)	Fiber Type	Fiber Interface Type	Central Wavelength(nm)	Transmit Optical Power (Per Channel)(dBm)	Receive Optical Power (Per Channel)(dBm)	Maximum Power Consumption(W)
40GBASE-SR	400@OM4	0 ~ 70	MMF	MPO	850	-7.6 ~ 2.4	-9.5 ~ 2.4	1.5

Figure 1 Physical Appearance

2. Module On-Board Identification Test

This module supports 40G transmission rate. When inserted into a Cisco N3K-C3064PQ-10GE switch, the module establishes a normal link and the port indicator lights up. Module information identification and DOM data display are both normal. The detailed results are shown in Table 2.

Table 2 Module Link, Identification and DOM Information

	Status on Cisco N3K-C3064PQ-10GE 40G Port
LINK
Identification
DOM Data

3. Key Parameter Test

Module samples were tested in a laboratory environment at a case temperature of 70℃. The test results are shown in Table 3.

Table 3 Module Key Parameters

Channel	Transmit Optical Power (dBm)	Receive Sensitivity @1E-12 BER(400m over OM4 Fiber) (dBm)	Power Consumption (W)
CH1	-2.88	-13.52	1.32
CH2	-2.84	-13.55
CH3	-2.75	-13.41
CH4	-2.85	-13.32

Optical eye diagram tests were also performed on module samples at 70℃ case temperature, as shown in Table 4.

Table 4 Module Optical Eye Diagrams

CH1 Eye Diagram	CH2 Eye Diagram

CH3 Eye Diagram	CH4 Eye Diagram

The detailed optical eye diagram parameters are listed in Table 5.

Table 5 Optical Eye Diagram Parameters

Channel	Extinction Ratio (dB)	P-P Jitter (ps)	Rise Time (ps)	Fall Time (ps)	Margin Value (%)
CH1	7.11	13.12	17.89	24.53	36.2
CH2	6.58	12.83	18.30	23.71	42.7
CH3	7.11	13.12	17.89	24.53	36.2
CH4	6.58	12.83	18.30	23.71	42.7

4. Test Conclusion

Actual test data verifies that the core performance indicators of the QSFP-40G-SR4-C-G11 optical module fully comply with Moduletek’s datasheet specifications. Its performance is comparable to mainstream same-type optical modules released by Cisco.

Moduletek provides cost-effective QSFP-40G-SR4 optical modules. Welcome to inquire and purchase.

Moduletek Limited is at your service.

For further inquiries about the above content, please contact us at: sales@moduletek.com

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Test Report For Moduletek QSFP-40G-SR4-C-G11 Optical Module