These ground paths can act as a large loop antenna that causes noise to be picked up from the environment, inducing currents in the grounding system. Ground loops are, as their name suggests a physical loop in a system’s grounding scheme resulting from multiple ground paths between circuits. These are covered in greater detail in Ott, AN-375, AN-740, AN-770, and AN-727 (see the References section). Though this discussion focuses on breaking ground loops as a motivation for isolating these interfaces, there are other important considerations, such as operator safety and the protection of electronics that necessitate isolation. Ground loops are discussed in the context of USB throughout this article, but other interfaces, such as RS-232, RS-485, and CAN, are also susceptible to ground loops (see AN-375, AN-740, AN-770). This article will explain how ground loops occur and discuss how galvanic isolation has been used to eliminate them. If this voltage is large enough, it can cause data errors at the receiver. A ground loop can be a source of interference that can induce a noise voltage between the grounds on either end of the transmission. Transmitting data over long distances is fraught with potential problems. This article explains how ground loops occur and discusses how galvanic isolation has been used to eliminate them. In some cases, the nature of the item means that it is non-returnable, for example, due to hygiene/health and personal care/wellness/consumable nature of the product.Breaking Ground Loops with Functional Isolation to Reduce Data Transmission Errors Office Products and Wireless Returns Policy New electronic items fulfilled by Amazon AU can be returned for change of mind, for a replacement or a full refund of the purchase cost of the item within 30 days of receipt of delivery.For information about returning faulty electronics please see Returning Faulty Items. Please see our Amazon Global Store Returns policy and Refunds policy for more information about returning Amazon Global Store items.Ĭamera, Electronics and PC Returns Policy Please see About Marketplace Returns & Refunds for details on Seller returns policies. To return faulty items see our Returning Faulty Items policy.įor items ordered on from a seller that fulfils and ships its own inventory (also called a third party seller), any returns will be in accordance with the returns policy set by that seller (not the Amazon AU returns policies). This change of mind return policy is in addition to, and does not affect your rights under the Australian Consumer Law including any rights you may have in respect of faulty items. Unless otherwise stated, original shipping fees for change of mind returns are not refunded. Please Contact Us and see About Items That Can’t Be Returned. In some circumstances, these items may be eligible for a refund or a replacement (for example, if you receive the wrong item due to an Amazon AU error or if the item is faulty). In some cases, the nature of the item means that it is non-returnable, for example, due to hygiene/health and personal care/wellness/consumable nature of the product. You can return most new, unopened items fulfilled by Amazon AU within 30 days of receipt of delivery for a replacement or full refund of the price you paid for the item if you change your mind - see About Replacements and About Refunds.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |