The QSFP+ module is designed for use in 40GBASE Ethernet throughput up to 2km over single mode fiber (SMF) using a wavelength of 1310nm via a MTP/MPO-12 connector.

This transceiver is compliant with 100G PSM4 MSA. Digital diagnostics functions are also available via the I2C interface, as specified by the 100G PSM4 MSA, to allow access to real-time operating parameters.

With these features, this easy to install, hot swappable transceiver is suitable to be used in various applications, such as data centers, high-performance computing networks, enterprise core and distribution layer applications.

Note: The FS P/N is changed from QSFP-PIR4-40G to QSFP-PLR4L-40G, but the product is the same. Only the FS P/N has been changed.
Product Quality：

Since its inception in 2004, SEESUO has continually refined its processes to assure the best possible quality for our customers. The foundational elements of these processes are Record-Keeping and Quality Assurance Testing (QAT). To maintain a robust data archive, each part is individually serialized both in its internal EEPROM memory and on its external label.

All QAT results and other important information (e.g., manufacture date, compatibility programming) are associated with each Serial Number stored in our cloud-based secure database. QAT consists of visual part inspection as well as verification of all critical parameters and performance of each part. For the QSFP-40G-PLRL4-FL optical output power and wavelength (1310nm) are verified on optical spectrum analyzers.

Receiver sensitivity is verified at both minimum distance and the 1.4km maximum range over actual (not simulated) SMF , singlemode fiber cable. Digital Diagnostics Monitoring (DDM) parameters including: optical output power, receive optical power, internal module temperature, transmit bias current and supply voltage, are tested for compliance with specifications. In addition, the part is verified for proper operation across its full operating temperature range, 0C to 50C.

Q. What is the 40GbE XSR4 max supported distances?

A. The Arista extended reach SR4 (XSR4) supports distances compatible with 10GBASE-SR, up to 300m on OM3 and 400m on OM4. The 40G XSR4 is also capable of running as 4x10G, with full compatibility with 10G-SR and 10G-SRL transceivers. Operation in 4x10G mode will require eithera fiber breakout cable, or a QSFP-LC cassette. See below for details.

Q. What is the 40GbE PLRL4 distance capability?

A. The Arista parallel LR4 Lite (PLRL4) supports distances compatible with 10GBASE-LRL, which is 1km on single mode fiber. In addition the PLRL4 optic can support 4 individual 10G-LR connections using a 4x10G mode and fiber breakout cables or cassettes for single mode fiber.

Q. What is the 40GbE PLR4 distance capability?

A. The Arista parallel LR4 (PLR4) supports distances compatible with 10GBASE-LR and 10GBASE-LRL, which is 10km (or 1km) on single mode fiber. In addition the PLR4 optic can support 4 individual 10G-LR connections using a 4x10G mode and fiber breakout cables or cassettes for single mode fiber.

Q. What cable type is needed for the PLRL4 and PLR4 transceivers?

A. The PLR4 and PLRL4 use an MTP-12 connector, and require an APC (Angle polished connector) single-mode MTP-12 cable. The cable is equivalent to the 40G-SR4 MTP to MTP, with the only change being the use of single mode fiber. UPC (Ultra polished connector) is another type of connector for MTP-12 cables but this does not exist in the market for single-mode fiber. APC is the only available choice for single-mode MTP-12 fiber.

Q. What is the minimum bend radius of the 40G copper cables?

A. The QSFP-SFP (4-way) CR4 cables have a stated minimum bend radius of 32.35mm (1.27”) to ensure they are not damaged. The QSFP-QSFP cables have a stated minimum bend radius of 45mm (1.77”) to ensure they are not damaged.

[QSFP-QSFP cables are thicker than the QSFP-SFP ones and need more space.]

Q. How does the QSFP+ to SFP+ fiber convertor allow 4x 10G?

A. The IEEE 40G-SR4 standard specified a parallel technology, with 4 lanes in each direction. The purpose of this was to allow for easier development of 40G, re-using 10G components. As a side result the 40G multi-mode transceivers can also support 4x10G modes. (The switch or router also has to support this in both the hardware and software). A fiber that connects from one 40G port to four 10G ports provides a physical path to allow the source “40G” port running in 4x10G mode to be connected to 4 unique 10G destinations. As the fiber is a passive medium it has no concept of the 40G or 10G signals.

Q. How are the 7050Q shared QSFP+ ports changed to the SFP+ ports?

A. By default the Arista 7050Q has the 8 SFP+ ports disabled, and they must be enabled before being used. There is a hardware command to activate the SFP+ ports, and disable the associated QSFP+ ports.

SFP+ Ports 17-20 are associated with QSFP+ port 15/1-4

SFP+ Ports 21-24 are associated with QSFP+ port 16/1-4

The command to configure the mode: (config)#hardware port-group 1|2 select qsfp|sfp To activate Eth17-24 you need: (config)#hardware port-group 1 select Et15/1-4 | Et17-20 To activate Eth21-24 you need: (config)#hardware port-group 2 select Et16/1-4 | Et21-24 Using this command will restart the forwarding agent, which will cause all links in these port groups to flap. Proceed with caution if in a production environment. Using the QSFP+ ports, with a transceiver for 4x10G mode requires the same command as for the 7050-64 switches to enable 4x10G mode on the uplinks.

Excellent quality is the foundation of SEESUO' s survival and development. Our operation team are experts with many years' experiences in optical communication industry. Our manufacturers are first-class manufacturers in the industry. Many of them have the qualification of OEM for first-class system equipment manufacturers.

SEESUO Compatibility Testing Center has most of the mainstream brand switches and devices.Before shipment,We will code the optical modules or DAC/AOC cables,then test them on the corresponding switches to ensure that our products are 100% compatible with your system.

Shenzhen seesuo technology co., ltd. is located in Shenzhen , surrounded by a good R&D atmosphere. It is a professional manufacturer of "1*9, SFP, SFP+, XFP, QSFP+, COPPER SFP and GPON". Yongxinfeng has been deeply involved in the field of high-performance active optical modules. It is a high-tech enterprise integrating R&D, production, sales and technical services. At present, our products are widely used in "network data communication field, security monitoring field, data storage field, industrial power communication field" and so on.

We always adhere to the "customer first, quality-oriented" service concept, uphold integrity, business reputation. At present, the products are widely exported to Brazil, Russia, Ukraine, India, Singapore, Vietnam and other countries. By continuously improving our after-sales service system, we are able to provide our customers with higher quality products and services. SEESUO Technology always adheres to the "trust" as the root, based on the "quality"-based business philosophy, and establishes long-term cooperative relationships with customers to achieve a win-win result.

SEESUO Technology has always focused on the field of optical modules and has continuously invested a large amount of money in the research and development of new products. As the size of the plant and the number of employees continue to grow, the plant′s production capacity continues to increase. We can provide OEM and ODM services to our customers.