獨特的高級功能
產品介紹
1480A USB2.0協議分析儀具有OTG解碼, 是專門USB道路設計的戰士。分析儀體積非常小,可以隨意放到你的上衣口袋或筆記本電腦包,僅略比鼠標大。其外殼採用了質量非常高的鋁拉絲。
捕獲的數據是實時傳送到PC裡進行分析,並通過電腦軟件顯示。該USB分析儀捕獲數據大小並沒有限制,因數據會被直接實時傳到PC應用程序解讀及在樹視圖顯示。這可以讓你捕捉數百MB的數據(僅局限於使用電腦上RAM的大小)。
1480A含有32MB FIFO緩衝器SDRAM,那可流暢捕獲突發流量,使得被測鏈路上暫時突發流量不會造成USB分析儀與分析PC鏈接飽和。持續最大捕捉速度至電腦很大程度上取決於捕獲PC的速度。注意:1480A USB分析儀永遠不會遺失捕獲的數據(不管被測線路是飽和的情況下),因為所捕獲的數據總是在緩衝SDRAM中,然後FIFO發送到個人電腦分析。
1480A USB協議分析儀是基於FPGA的,這使它能接受新軟件升級。使我們能夠在需要時遠程部署邏輯和軟件升級。這意味著你將永遠無需要把硬件發送給我們升級。
從USB分析儀硬件收到數據後實時進行解碼,然後才開始分析捕獲的數據及在電腦分析軟件顯示的數據。如USB事務和數據包被捕獲,它們將被解碼並加到PC分析軟件的樹視圖上。這使得更容易理解所捕獲數據的事件和次序。詳細細節只要對選定的交易和數據包樹視圖點擊。電腦分析軟件就會以十六進制格式的解碼,並在十六進制視圖窗格中顯示。
要了解更多關於電腦分析軟件,請點擊這裡 click here。該USB分析軟件是免費的。它包括LS,FS和HS的數據文件樣本,可以在軟件中查看,使您在購買USB硬件分析儀之前,能夠熟悉軟件。
什麼是在箱子裡?
Technical Specifications
1480A LS/FS/HS USB Protocol Analyzer Technical Specifications. |
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Dimensions / Weight |
4.90” x 4.10” x 1.4” / 8.8oz (125 x 105 x 35 mm / 250g) |
Analysis PC Requirements |
32-bit (x86) and 64-bit (x64) Windows versions (XP SP2 or newer). Pentium 4 or faster CPU is recommended. |
Supported USB Standards |
USB 1.0, USB 1.1, USB 2.0, OTG 1.3. |
Supported USB Speeds |
The 1480A automatically detects device connection in high speed (480 Mbps), full speed (12 Mbps), and low speed (1.5 Mbps). |
Maximum recorded data length |
Unlimited. Only the available disk and memory of the Analysis PC limits how much data can be captured and analyzed. |
Built in FIFO buffer |
32 MB. The FIFO buffer is used to smooth out the data stream captured from the Link Under Test. Note that the FIFO buffer will fill up if the Analysis PC is unable to read out data fast enough from the 1480A. In this case, the recording will automatically stop and the PC application will display the captured data up until the point where the FIFO filled up. |
Analysis PC Interface |
USB 2.0 Type "B" Connector |
Link Under Test Interface |
USB 2.0 Type "A" and "B" Connectors. |
LED Indicators |
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Captured bus events and packets |
All bus activity down to the smallest detail is captured and stored into the .usb file when recording. The 1480A Software displays all the captured information from the lowest link level up to the highest protocol level. In addition the VBus voltage is continuously monitored and stored in the capture file. For detailed information of the captured data, please see the datasheet for the NXP ISP1505A USB Transceiver. |
Displayed Bus Events |
LS Device Connection, FS Device Connection, HS Device Connection, Device Reset, Device Chirp, Host Chirp, Device Disconnection, HS Idle, Keep-Alives, OTG Session Request Protocol, OTG Host Negotiation Protocol and OTG VBus events. |
Displayed Packets. |
SETUP, IN, OUT, SOF, DATA0, DATA1, DATA2, MDATA, ACK, NAK, NYET, STALL, PING, SPLIT, PRE. |
Displayed Transactions. |
SETUP Transaction, IN Transaction, OUT Transaction, PING Transactions, SPLIT Transactions. |
Decoded Device Requests |
CLEAR_FEATURE, SET_FEATURE, SET_ADDRESS, GET_DESCRIPTOR, SET_DESCRIPTOR, GET_STATUS, GET_CONFIGURATION, SET_CONFIGURATION, GET_INTERFACE, SET_INTERFACE, SYNCH_FRAME. |
Decoded Descriptors |
Device Descriptor, Configuration Descriptor, Interface Descriptor, Endpoint Descriptor, String Descriptor, Device_Qualifier Descriptor, Other_Speed_Configuration Descriptor and OTG Descriptor. |
Packet Integrity Checked |
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