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MELLANOX MMA2L20-AR Optical Module Sample Report

Time: 2024-03-13
        NVIDIA/MELANOX company has model MMA2L20-AR optical module products, can support 25G Ethernet transmission 10KM in single-mode fiber, Moduletek Laboratory of the product prototype test, to facilitate a further understanding of the product's performance indicators and the effect of the actual machine use.
1.Product Introduction
        MELLANOX MMA2L20-AR optical module supports 10KM link length on 25G standard single mode fiber (SMF) G.652. The official key parameter information and the physical appearance of the module are as follows:
Table 1 MELLANOX MMA2L20-AR Optical Module Official Description
  Ordering Part Number
  Description
  MMA2L2O-AR
  Optical transceiver, 25GbE, 25Gb/s, SFP28,LC-LC, 1310nm, LR up to 10km
  Parameter
Min
Type
Max
Units
Notes
  Power Supply Voltage
3.135
3.3
3.465
V
---
  Power consumption
---
---
1.5
W
---
  Operating case temperature
0
---
70
℃
---
  Link Distance with ITU-T G.652.D
0.002
---
10
km
---
  Average launch power
-7
---
2
dBm
---
  Receiver Sensitivity (OMA)
---
---
-12
dBm
1
  Stressed Receiver Sensitivity (OMA)
---
---
-9.5
dBm
2
  Notes:
  1.Hit ratio 5x10-5per sample.
  2.Measured with conformance test signal at receiver input for BER =5x10-5.

MELLANOX MMA2L20-AR Optical Module Physical Picture
Figure 1 MELLANOX MMA2L20-AR Optical Module Physical Picture
2.Module identification
        MMA2L20-AR module will be connected to the MELLANOX MCX4121A-ACAT card, access to the jumper, the module can be normal LINK, the port indicator lights up; module information can be recognized by the switch, such as the module type, model number, vendor name, serial number, wavelength, transmission distance, etc.; you can read the DOM data, and the DOM data are in the threshold range, no alarm phenomenon. Alarm phenomenon. The interface adapts to FC-FEC mode in auto FEC mode.
Table 2 MELLANOX MMA2L20-AR Optical Module Upstream Identification
Item
 Server/network card reading information
LINK
Identify 
DOM data
3.Module key parameters test
        a. Laboratory module shell 45 ℃ conditions, the MMA2L20-AR sample module in the test version of the performance indicators are tested, the test results are as follows;
Table 3 MELLANOX MMA2L20-AR optical module performance indicators
  Parameter
Test data
Unit
Remarks
  Transmit optical power
-2.8
dBm
 
  Receiving sensitivity (not over fiber)
-17.5
dBm
 5E-5 BER
  Receiving sensitivity (over 10km fiber)
-17.6
dBm
 5E-5 BER
  Power consumption
0.9
W
 

        b. Sample module enclosure 45°C optical eye diagram test with the following eye diagram template and parameters:
MELLANOX MMA2L20-AR Optical Module Eye Diagrams
Figure 2 MELLANOX MMA2L20-AR Optical Module Eye Diagrams

Table 4 MELLANOX MMA2L20-AR light module eye diagram parameters
Temperature (℃)  
Extinction ratio (dB)
 P-P jitter (ps) 
Rise time (ps) 
Fall time (ps)
Margin value (%)
45
4.51
12.6
16.44
19.32
11.5
        From the actual test situation, the key parameters of the module are in line with the official claims of MELLANOX.
        Moduletek Limited is at your service.
        If you have any questions about the above content, please contact us via email: sales@moduletek.com
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