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problems_with_the_demodulator_might_be_others [2018/07/11 08:25] (current)
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 +====== WISP - Problems ====== 
 +====== ​  ​====== 
 + I present the problems I'm facing with my wisp.\\ ​ I have an Impinj Reader Speedway Revolution R420.\\ {{file/​view/​Speedway_rev.JPG/​308949866/​808x585/​Speedway_rev.JPG|Speedway_rev.JPG}}\\ ​ I configure the reader with Multireader\\ {{file/​view/​Multireader.JPG/​308950234/​800x600/​Multireader.JPG|Multireader.JPG}}\\ ​ To do the inventory, I use the WISP Demo C# Gui App from Intel. I'm able to connect it to the reader. The following image is the configuration \\  I used to do the inventory. The reader is able to inventory a commercial Tag but not my wisp.\\ {{file/​view/​wispdemo_config.JPG/​308950670/​800x600/​wispdemo_config.JPG|wispdemo_config.JPG}}\\ \\  This is what I measure with the oscilloscope while the reader is on doing the inventory:​\\ **Bitline**(Input comparator)\\ {{file/​view/​bitlineTcorto.JPG/​308953234/​499x301/​bitlineTcorto.JPG|bitlineTcorto.JPG}}\\ **Bitline (green)- compA(yellow)**\\ {{file/​view/​bitline_compA.JPG/​308953128/​501x346/​bitline_compA.JPG|bitline_compA.JPG}}\\ ​ I believe that the WISP is correctly demodulating.\\ \\ **Vout**\\ {{file/​view/​vout.JPG/​325125742/​503x308/​vout.JPG|vout.JPG}}\\ **Vreg**\\ {{file/​view/​vreg.JPG/​325127170/​510x405/​vreg.JPG|vreg.JPG}}\\ **Supervisor**:​ should it be up more time? \\ {{::​supervisor.jpg?​nolink&​513}}\\ **Transmit_RFID**\\ {{::​tx_entera.jpg?​nolink&​515}}\\ **Supervisor (green)+Tx**\\ {{::​supervisor_tx.jpg?​nolink&​519}}\\ {{::​tx_entera_supervisor.jpg?​nolink&​527}}\\ ​ It seems to have enough time the supervisor on to transmit the packet.\\ ​ But the reader it's not receiving anything, it appear this error in the c#Gui\\ \\ //​StatusCode = M_Success//​\\ //​Delete_RoSpec//​\\ //​===================================//​\\ //​StatusCode = M_Success//​\\ \\ //​Stop_RoSpec//​\\ //​===================================//​\\ //​StatusCode = M_Success//​\\ \\ //​Enable_RoSpec//​\\ //​===================================//​\\ \\ //​===================================//​\\ //​StatusCode = M_Success//​\\ \\ //​Add_RoSpec//​\\ //​===================================//​\\ //​StatusCode = M_FieldError//​\\ //​ErrorDescription = LLRP [420] : //​RFTransmitter/​ChannelIndex : out-of-range//​\\ //​ParameterType = 222//\\ //ErrorCode = P_ParameterError//​\\ //​ParameterType = 224//\\ //ErrorCode = P_FieldError//​\\ //FieldNum = 2//\\ //ErrorCode = A_OutOfRange//​\\ \\ //​setReaderConfig//​\\ \\ **Backscatter:​ I measured the two impedances my antenna presents being Tx_pin 1 or 0:**\\ {{::​backscatter2.jpg?​nolink&​480}}\\ {{::​backscatter.jpg?​nolink&​643}}\\ **I'm using the last Firmware in the repository.**\\ 
 +---- 
 +\\ \\  The last modification was made by - [[http://​www.wikispaces.com/​user/​view/​yeagerd|{{http://​www.wikispaces.com/​user/​pic/​yeagerd-lg.jpg?​16x16|yeagerd}}]] [[http://​www.wikispaces.com/​user/​view/​yeagerd|yeagerd]] on Apr 26, 2012 9:28 am
problems_with_the_demodulator_might_be_others.txt · Last modified: 2018/07/11 08:25 (external edit)