Troubleshooting/solution

Testing the parameters of optical modules

In using the use of optical modules, it is unavoidable to encounter a variety of problems. In order to reduce the problematic failure phenomenon, but also to protect the stability of the optical module through. There will exist different detection functions for optical modules. 1X9 module is main... Read More

Status and activation process of the ONU

Initial status (O1) The ONU in this status has just powered on and is still in LOS / LOF.Once a downstream is received, the LOS and LOF are eliminated, and the ONU moves to the standby status (O2). Standby status (O2) The ONU of this status has received the downstream, waiting to receive the netw... Read More

Basic troubleshooting of ONU (optical network unit)

Introduction: ONU (Optical Network Unit) is divided into active optical network unit and passive optical network unit, ONU is the user terminal device in the optical network, placed on the user end, used with OLT to achieve Ethernet Layer 2, Layer 3 functions, to provide users with voice, data an... Read More

iOS 15.4 rollover: battery life crashes after update

For those who upgraded to iOS 15.4, is your iPhone powering down a little faster? https://www.smart-xlink.com/products.html More and more people are reporting poor battery life after OTA upgrades. In severe cases, a model with a large battery like the iPhone 13 Pro Max can only last for half a da... Read More

Introduction of EPON technology and test challenges faced

The EPON system consists of multiple optical network units (ONU), an optical line terminal (OLT), and one or more optical networks (see Figure 1). In the extension direction, the signal sent by the OLT is broadcast to all ONUs. 8h Modify the frame format, redefine the front part, and add the time... Read More

EPON test related technology

1 Introduction With the rapid development of broadband access technology, various emerging broadband access technologies have emerged after the rain. After the PON technology is DSL technology and cable technology, another ideal access platform, PON can directly provide optical services or FTTH s... Read More