Arista SFP-25G-MR-LR Optical Transceiver Sample Test Report

The Arista SFP-25G-MR-LR is a 25G multi-rate optical transceiver. It supports 10G/25G Ethernet transmission over single-mode fiber with a maximum transmission distance of 10 km. Moduletek Laboratory has conducted comprehensive performance and compatibility tests on the original sample to verify its operating performance, DOM data, power consumption and eye diagram indicators, providing objective reference for product selection and application.

1. Product Introduction

Complying with the 25GBASE-MR-LR standard, this transceiver is designed for G.652 single-mode fiber (SMF) with a 10 km transmission distance. It supports a commercial operating temperature range of 0～70 ℃, suitable for conventional data center deployment.

Table 1 Official Specifications

PHY Type	Max Reach	Max Power Consumption	Operating Temperature	Cable Type	Wavelength	Transmit Power	Receive Power
25GBASE-MR-LR	10km	1.5W	0~70℃	SMF	1310nm	-7 to 2.0dBm	-13.3 to 2.0dBm

ARISTA SFP-25G-MR-LR Optical Module Physical Drawing

Figure 1 Physical Photo

2. Host Identification Test

The SFP-25G-MR-LR transceiver was inserted into the Arista DCS-7160-48YC6-F switch for compatibility testing:

• The port links up normally with the indicator light on;

• The switch accurately reads complete transceiver information, including model, manufacturer and serial number;

• DDM/DOM monitoring functions work normally. All monitored values are within the standard threshold without alarms or error prompts.

Table 2 Transceiver Operating Status

	Information Read by the Switch for the Module at 10Gbps Rate	Information Read by the Switch for the Module at 25Gbps Rate
LINK
Identification
DOM Data

3. Key Performance Test

With the transceiver shell temperature maintained at 45 ℃, we tested core operating parameters at 10G and 25G rates.

Table 3 Measured Performance Data

	Transmit Optical Power	Power Consumption	Receive Sensitivity (over fiber)	Receive Sensitivity (over 10KM fiber)	Remarks
10G	-3.2dBm	0.726W	-17.5dBm	-17.6dBm	0 BER
25G	-2.6dBm	0.873W	-17.8dBm	-17.7dBm	5E-5 BER

• High-Temperature Eye Diagram Test

Eye diagram tests at 10G and 25G were performed at a shell temperature of 45 ℃. The signal waveform is complete and stable, meeting industrial design specifications.

Table 4 10G / 25G Eye Diagram

Eye Diagram of the Module at 10Gbps Rate	Eye Diagram of the Module at 25Gbps Rate

Table 5 Eye Diagram Parameters at 45℃

	Temperature (°C)	Extinction Ratio (dB)	P-P Jitter (ps)	Rise Time (ps）	Fall Time (ps)	Margin Value (%)
10G	45	5.43	12.74	19.04	27.16	5.6
25G	45	4.298	12.78	14.88	17.04	11.5

• Test Conclusion

Test results confirm that the Arista SFP-25G-MR-LR has great compatibility with Arista switches under 10G and 25G dual-rate operation.

Under 45 ℃ high-temperature environment, core indicators including optical power, power consumption, receiving sensitivity and signal eye diagram fully conform to official datasheet values.

This transceiver runs stably and reliably, and can fully meet the requirements of 10km long-distance commercial network applications.

Moduletek offers a full range of compatible optical transceivers for mainstream brands, with stable performance and professional technical support. Welcome for consultation and purchase.

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

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Arista SFP-25G-MR-LR Optical Transceiver Sample Test Report