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Sample Report of Mellanox MMA2P00-AS Optical Module

Time: 2024-01-05
        NVIDIA/Mellanox provides the MMA2P00-AS optical module, which supports 25G Ethernet transmission up to 100 m over multimode fiber. Moduletek Laboratory has tested the prototype of this product to help users better understand its performance specifications and actual on-board application performance.
1. Product Overview
        The Mellanox MMA2P00-AS optical module supports a link length of 100 m over standard 50/125 μm multimode fiber (MMF) when FEC negotiation is enabled on the host. The official key parameters and physical appearance of the module are as follows:
Table 1 Official Specifications
      Ordering Part Number       Description
      MMA2P0O-AS       Transceiver,25gbe,sfp28,lc-lc,850nm,up to 100m
      Parameter Min Typ Max Units Notes
      Supply voltage 3.135 3.3 3.465 V ---
      Power consumption --- --- 1 W ---
      Operating case temperature 0 --- 70 ℃ ---
      Reach on OM3 70 --- --- m ---
      Reach on OM4 100 --- --- m ---
      Average launch power -8.4 --- 2.4 dBm ---
      Unstressed receiver sensitivity (OMA)at BER=10-12 --- --- -7 dBm 1
      Stressed receiver sensitivity (OMA)at BER=5*10-5 --- --- -5.2 dBm 2
        Notes:
        1.All Tx channels on and all Rx channels on with AOP 3dB greater than the tested channel.Injected optical eye must comply with the transmitter eye mask definition from the above table.
        2.Measured with conformance test signal at TP3 (ref.IEEE 802.325GBASE-SR)for BER<5· 10-5

MELLANOX MMA2P00-AS Optical Module Physical Diagram
Figure 1 Physical Appearance

2. On-Board Module Identification
        The MMA2P00-AS module was installed into a Mellanox MCX4121A-ACAT network adapter with a fiber patch cord. The module established a normal link, and the port indicator was lit.
        Module information including type, model, vendor name, serial number, wavelength, and transmission distance was correctly recognized by the system. DOM data could be read normally and all values were within threshold ranges, with no alarms.
Table 2 On-Board Identification Results
Item Information Read by Server/Network Adapter
LINK
Identification
DOM Data
3. Key Module Parameter Testing
        a. Performance indicators of the MMA2P00-AS sample module were tested on a test board at a module case temperature of 45 ℃. The test results are shown below:
Table 3 Performance Test Results
    Parameter Test Data Unit Remarks
    Transmit Optical Power 0.1 dBm  
    Receiving Sensitivity (without fiber) -11.2 dBm 5E-5 BER
    Receive Sensitivity (with 100m OM4 fiber) -10.8 dBm 5E-5 BER
    Power Consumption 0.631 W  
        b. Optical eye diagram testing was performed on the sample module at a case temperature of 45 ℃. The eye diagram mask and parameters are as follows:
MELLANOX MMA2P00-AS Optical Module Eye Diagrams
Figure 2 Eye Diagram

Table 4 Eye Diagram Parameters
Temperature (°C) Extinction Ratio (dB) P-P Jitter (ps) Rise Time (ps) Fall Time (ps) Margin Value (%)
45 5.52 14.4 15.66 18.12 24.5
        Based on actual test results, the key parameters of the module meet the official specifications claimed by Mellanox.
        Moduletek is at your service.
        For further inquiries about the above content, please contact us at: sales@moduletek.com
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