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UDP Module Recall Info: Contained on the UDP modules, is an oscillator for clocking data from the module to the ICE PIC card. The data path from the module to the ICE card is 16 bits. The oscillator for clocking the data to the ICE card was suppose to be listed at 66MHz. Instead of the 66Mhz oscillator, a 60MHz oscillator was installed at the factory. A clock rate of 66MHz and a data path of 2 bytes yields a 132MBytes/Sec interface. A 132MBytes/Sec interface is above the theoretical peak of 125MBytes/Sec on a Gigabit Ethernet Interface. With the error in placement of the 60MHz oscillator the Module/PIC interface drops to 120MBytes/Sec. 120MBytes/Sec is below the data rate that could potentially be seen by the module-125MBytes/Sec. Problems Associated With Slow Module/PIC Interface: 1) Having the Module/PIC interface slower then the maximum data rate causes problems for SDDS rates above 95MBytes/Sec. 2) Interfaces that burst data can also cause problems. For example, if a packet source is transmitting 5MBytes/Sec of data, but uses a multiple packet "burst" then time delay before bursting again, some packets may be lost. The loss of packets is due to the module/ICE interface not being able to accommodate the near theoretical data rate during the bursting of the packets by the source. Solution: By swapping the current the current 60MHz oscillator with a 66Mhz oscillator, the problems at high data rates are resolved and the module runs as desired. Incorrect Oscillator Module Identification: All modules shipped BEFORE April 1, 2005 will have the incorrect oscillator. All of these modules can be identified as having a "black dot" on the oscillator. (In some cases the oscillator on the module my not be marked at all.) Below are 3 pictures of each of the 3 types of modules-UPD/SDDS Copper, 1300nm, and 850nm. If the module(s) you are currently using have this black dot OR no dot at all then each of these modules will need to be shipped back to have its oscillator replaced. Correct Oscillator Module Identification: All modules that have had the incorrect oscillator removed and the correct oscillator added will have a "red dot" where in the pictures below a black dot is shown. Return Info & Instructions: Modules may be shipped to the following address: ICE Attn: Jamie Rookwood 10302 Eaton Place Suite 200 Fairfax, VA 22030 An RMA number is NOT needed. Inside the box, add a piece of paper that states: "Oscillator Replacement" <Return Shipping Address> <Point of Contact with Phone Number >
All modules sent back for RMA WILL BE CORRECTED AND RETURNED WITHIN ONE BUSINESS WEEK. If modules are attached to ICE PCI cards(PIC4T,PIC4X,etc), the modules do NOT have to be removed. They can accompany the ICE PCI cards back. The modules will be corrected and shipped back with the ICE PCI cards-attached as they were shipped. If you wish to remove the modules before returning, please be sure to loosen the modules from the ICE cards from the BACK of the ICE cards and return the modules with the hex standoffs attached. For pictures, and explanations on how to correctly remove the modules from the ICE cards follow the link below. Conclusion: My sincere apologies to customers for this error. We endeavor to provide quality hardware and take it quite personally when an error does happen. If have have questions my email and phone are on the contacts page. Thank you, Bill Owen UDP-Copper With Incorrect Oscillator-Note Black Dot That Identifies Need For RMA
UDP-1300nm With Incorrect Oscillator-Note Black Dot That Identifies Need For RMA
UDP-850nm With Incorrect Oscillator-Note Black Dot That Identifies Need For RMA
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