USB2.0 一致性測(cè)試介紹
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2.5GHz帶寬、40GS/s采樣率、最大256Mpts的可分析存儲(chǔ)深度，X-StreamII流式結(jié)構(gòu)——速度快于其它示波器10-100倍，具備最深的測(cè)量參數(shù)工具箱、函數(shù)運(yùn)算工具箱，獨(dú)特的TriggerScan異常捕獲技術(shù)使得示波器能在單位時(shí)間內(nèi)捕獲更多的異常優(yōu)越的瞬時(shí)響應(yīng)能力，15.3英寸寬屏WXGA彩色觸摸屏顯示器。
二、測(cè)試夾具：
TF-USB-B（一致性測(cè)試板，能夠完成USB2.0的一致性測(cè)試功能；負(fù)載板能夠完成Droop電壓和Drop電壓相關(guān)測(cè)試）
三、測(cè)試軟件：
QualiPHY測(cè)試軟件的USB測(cè)試模板，能夠完成低速率Device、全速率和高速率Host、Device、Hub的USB一致性測(cè)試，支持全部USB-IF組織制定的一致性測(cè)試規(guī)范。
四、測(cè)試項(xiàng)目列表
| 測(cè)試項(xiàng)目 | 測(cè)試指標(biāo) | 標(biāo)準(zhǔn)值 | 對(duì)應(yīng)標(biāo)準(zhǔn)號(hào) | 參考標(biāo)準(zhǔn) |
| Signal Rate 信號(hào)速率測(cè)量結(jié)果 | Signal Rate 信號(hào)速率 | 479.76Mb/s≤x≤480.24Mb/s | 7.1.11 Data Signaling Rate | Universal Serial Bus Specification Revision 2.0 |
| Eye Result 眼圖模板測(cè)量結(jié)果 | Eye Violations 眼圖電壓 | x=0 | 7.1.2.2 High-speed Signaling Eye Patterns and Rise and Fall Time 7.1.3 Cable Skew | |
| Consecutive Jitter Min 最小連續(xù)抖動(dòng) | x≤100ps | |||
| Consecutive Jitter Max 最大連續(xù)抖動(dòng) | x≤100ps | |||
| Consecutive RMS Jitter RMS連續(xù)抖動(dòng) | x≤100ps | |||
| Paired JK Jitter Min JK配對(duì)最小抖動(dòng) | x≤100ps | |||
| Paired JK Jitter Max JK配對(duì)最大抖動(dòng) | x≤100ps | |||
| Paired JK RMS Jitter JK配對(duì)RMS抖動(dòng) | x≤100ps | |||
| Paired KJ Jitter Min KJ配對(duì)最小抖動(dòng) | x≤100ps | |||
| Paired KJ Jitter Max KJ配對(duì)最大抖動(dòng) | x≤100ps | |||
| Paired KJ RMS Jitter KJ配對(duì)RMS抖動(dòng) | x≤100ps | |||
| Rising Edge Rate Result 邊沿上升時(shí)間和速率測(cè)量結(jié)果 | Rising Edge Rate Min 邊沿上升最小速率 | x≤1600MV/s | 7.1.2.2 High-speed Signaling Eye Patterns and Rise and Fall Time | Universal Serial Bus Specification Revision 2.0 |
| Rise Time Max (equivalent) 最大上升時(shí)間 | x≥500ps | |||
| Rising Edge Rate Max 邊沿上升最大速率 | x≤1600MV/s | |||
| Rise Time Min (equivalent) 最小上升時(shí)間 | x≥500ps | |||
| Rising Edge Rate Mean 邊沿上升速率測(cè)量值 | x≤1600MV/s | |||
| Rise Time Mean (equivalent) 上升時(shí)間測(cè)量值 | x≥500ps | |||
| Falling Edge Rate Result 邊沿下降時(shí)間和速率測(cè)量結(jié)果 | Falling Edge Rate Min 邊沿下降最小速率 | x≤1600MV/s | 7.1.2.2 High-speed Signaling Eye Patterns and Rise and Fall Time | Universal Serial Bus Specification Revision 2.0 |
| Fall Time Max (equivalent) 最大下降時(shí)間 | x≥500ps | |||
| Falling Edge Rate Max 邊沿下降最大速率 | x≤1600MV/s | |||
| Fall Time Min (equivalent) 最小下降時(shí)間 | x≥500ps | |||
| Falling Edge Rate Mean 邊沿下降速率測(cè)量值 | x≤1600MV/s | |||
| Fall Time Mean (equivalent) 下降時(shí)間測(cè)量值 | x≥500ps | |||
| Edge Rate Match 邊緣速率匹配 | 符合模板要求 | |||
| Edge Monotonicity Result 邊沿單調(diào)測(cè)量結(jié)果 | Edge Monotonicity Result 邊沿單調(diào)測(cè)量結(jié)果 | 符合模板要求 | 7.1.2.2 High-speed Signaling Eye Patterns and Rise and Fall Time | Universal Serial Bus Specification Revision 2.0 |
| EOP Width Result 結(jié)束包位寬測(cè)量結(jié)果 | EOP Width 結(jié)束包位寬 | 7.5bits≤x≤8.5bits | 7.1.13.2.2 High-speed EOP | |
| Device Chirp K Latency 驅(qū)動(dòng)周糾K碼延遲時(shí)間 | 2.50μs≤x≤7.00ms | 7.1.7.5 Reset Signaling | ||
| Chirp K Duration 周糾K碼周期時(shí)間 | 1.00ms≤x≤7.00ms | |||
| HS Turn On Time After Chirp 周糾后高速率開啟時(shí)間 | x≤500.0μs | |||
| Suspend Timing 暫停時(shí)間 | 3.000ms≤x≤3.125ms | 7.1.7.6 Suspending | ||
| Suspend D- Volts D-暫停電壓 | x≤700.0mV | |||
| Suspend D+ Volts D+暫停電壓 | 2.70V≤x≤3.60V | |||
| HS SOF After Resume 暫停后恢復(fù)到高速SOF | 符合模板要求 | 7.1.7.7 Resume | Universal Serial Bus Specification Revision 2.0 | |
| Resume Amplitude D- D-恢復(fù)幅值 | x≤700mV | |||
| Resume Amplitude D+ D+恢復(fù)幅值 | x≤700mV | |||
| Reset Time 復(fù)位時(shí)間 | 3.10ms≤x≤6.00ms | 7.1.7.5 Reset Signaling | ||
| Suspend to Reset Time 暫停后復(fù)位時(shí)間 | 2.5μs≤x≤6.0000ms | |||
| J Voltage D+ D+ J電壓 | 360.0mV≤x≤440.0mV | 7.1.1.3 High-speed (480 Mb/s) Driver Characteristics | ||
| J Voltage D- D- J電壓 | -10.0mV≤x≤10.0mV | |||
| K Voltage D+ D+ K電壓 | -10.0mV≤x≤10.0mV | |||
| K Voltage D- D- K電壓 | 360.0mV≤x≤440.0mV | |||
| SE0 D- Voltage D- SEO電壓 | -10.0mV≤x≤10.0mV | |||
| SE0 D+ Voltage D+ SEO電壓 | -10.0mV≤x≤10.0mV | |||
| VBUS Voltage Before Enumeration 列舉前的電源線VBUS反饋電壓值 | x≤400mV | 無 | 無 | |
| D+ Voltage Before Enumeration 列舉前的數(shù)據(jù)線D+反饋電壓值 | x≤400mV | 無 | ||
| D- Voltage Before Enumeration 列舉前的數(shù)據(jù)線D-反饋電壓值 | x≤400mV | 無 | ||
| VBUS Voltage After Enumeration 列舉后的電源線VBUS反饋電壓值 | x≤400mV | 無 | ||
| D+ Voltage After Enumeration 列舉后的數(shù)據(jù)線D+反饋電壓值 | x≤400mV | 無 | ||
| D- Voltage After Enumeration 列舉后的數(shù)據(jù)線D-反饋電壓值 | x≤400mV | 無 | ||
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