Brief Introduction
The Vchung SFP28 passive electrical loopback is used for testing SFP28 transceiver ports in board level test. The electrical loopback provides a costeffective low loss method for SFP28 port testing. The VC-LOOPBACK-25GSFPx-xx is packaged in a standard MSA housing compatible with all SFP28 ports. Transmit data from the host is electrically routed (internal to the loopback module) to the receive data outputs and back to the host. Since the loopback module does not contain laser diodes, photodiodes, laser driver or trans impedance amplifier chips, etc., it provides an economical way to exercise SFP28 ports during R&D validation, production testing and field testing.
Features
- Customizable power consumption
- Custom memory maps available
- Supports 28Gbps total data rate
- Hot-pluggable MSA footprint
- Full SFF-8432 MSA compliant
- No reference clock required
Applications
- SFP28 port/system testing
- Ethernet IEEE 802.3 (Gigabit, 10 Gigabit and 25 Gigabit Ethernet)
- SONET, SDH, GBE, Fiber Channel Support
- Board level system testing
- Power on validation
- Excellent signal integrity
- Economical and flexible 28Gbps SFP28 port testings
Specifications
| Part No. | VC-LP-25GSFP-5-1 | Form Factor | SFP28 |
| Data Rate | 25G/ps | Attenuation | 5 dB |
| Power Option | 1 W | Operation Temperature | 0 to 70°C (32 to 158°F) |
| DDM | YES | Voltage | 3.3V |
| Protocols | MSA Compliant | Application | SFP28 Port Testing, Board Level System Testing |
 | Optical transceivers port(LC) For LC port, there are two types of single-fiber bidirectional optical transceivers (one LC connector) and dual-fiber unidirectional optical transceiver (two LC connectors). Single fiber bidirectional is used to send and receive signals in one fiber, and dual fiber unidirectional optical transceivers are used to one fiber to send signals and other fiber to receive signals. |
| Optical transceivers series Vchung offer comprehensive optical modules, data rate from 155M to 100G,form factor including SFP,SFP+,XFP,SFP28,QSFP+,CFP,CFP2 and QSFP28,support MMF and SMF interface. Vchung closely follow optical communication market trend, offers comprehensive transceivers solution, including: 1. Data center:100G QSFP28, 40GQSFP+, 10G SFP+, 10G/25G/40G/100G AOC. 2. Transport (OTN,PTN):100G CFP/CFP2/CFP4, 10G SFP+/XFP BIDI/CWDM/DWDM/Tunable, SFP. 3. Wireless(5G fronthaul,middlehaul and backhaul):25G SFP28, 50G QSFP28 PAM4. |  |
| Compatibility The optical transceivers can be adapted to Cisco, Huawei, Huasan, Alcatel-Lucent, Juniper, Brocade, HPE, Extreme, Ericsson and other equipment. It is 100% compatible with all vendors on the market. Of course, before confirming the purchase, it is best to inform model of the equipment to which the optical transceivers is applied. |  |
 | Industrial Standards VCHUNG all optical transceivers meet or exceed industrial standards, such as CE and RoHS as well as the regulations of the FCC. Through continuous monitoring before, during and after the production process. |
 | Full MSA Compliance High availability optical transceivers meet the Multi Source Agreement (MSA) standard SFF-8431. With MSA Standards various manufacturers determine standardizations of the Transceiver to ensure the interoperability. The optical transceivers interface is defined electrically, mechanically and functionally. |
| Quality assurance VCHUNG provides OEM services, VCHUNG supply all optical modules are high quality and reliable optical transceivers. For quality assurance, we provide three years replacement and lifelong maintenance service. |  |
