• Owing to the growing demand and quality requirements of the optical transceivers, testing their performance is necessary and important. Fiber optics is a multi-parameter technology, so several factors must be considered while testing the optical transceivers. This post discusses different parameters and introduces testing methods of fiber optic transceivers. An optical transceiver features a transmitter and a receiver, so it is important to test this equipment for individual functionality. Different Techniques of Transmitter Testing and Receiver TestingLet us focus on different methods and parameters of transmitter and receiver testing. Testing TransmitterWhen it comes to transmitter testing, the following factors must be tested on a priority basis.  l Transmi...
    2022 - 11 - 03
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BEIHAI offers a return & refund and replacement service. See detailed statements below.

l Return Notes

① All customers should contact Customer Service for approval before returning any products. BEIHAI won’t deal with any unannounced returns and costs incurred.

② If you want to make a return request, please keep all the packaging materials and shipping notes. And make sure the product doesn’t have obvious physical damage.

③ After sending back the product, please send us the tracking number and a copy of the shipping receipt. This will help us better track your return.

l Return Policy

① BEIHAI offers 30 days without reason to return and refund or exchange for the products. Buyers need to bear the freight and customs charges.

② BEIHAI provides exchange or repair for the defective products within the warranty period. Customers need to provide the evidence that the failure is caused by the product itself, not by the artificial damage caused by the customer’s wrong operation. After confirmation we will be responsible for all charges. Refund is negotiable in this case.

③ If there is definite evidence that the product failed due to the product’s own problems within 30 days of receipt or within the warranty period, pick-up service is offered by BEIHAI. We will arrange the carrier to contact you directly and pick up the products.

④ If the products are out of warranty period, they will be considered for repair for a reasonable rate or a reduced price for replacement piece. Customers need to bear the round trip freight and customs charges.

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