54200中文使用说明书
安捷伦仪器使用说明书中文

Alpha安捷伦B1500A半导体器件分析仪用户!ˉ的GUID安捷伦科技公司声明?安捷伦科技公司2005年,2006年,2007年,2008本手册的任何部分不得转载任何形式或通过任何手段(包括电子电子存储和检索或翻译成外国语言)事先同意MENT和安捷伦的书面同意作为由美国科技公司在美国和国际版权法。
手册部件号B1500-90000版2005年7月第1版,第2版,2005年12月2006年4月第3版第4版,2007年1月2007年6月5日,版第6版,2007年11月2008年10月7日,版安捷伦科技公司5301史蒂文斯溪大道95051美国加利福尼亚州圣克拉拉保证本文档中所含的物质是提供MENT!°为是,±,是苏如有更改,恕不另行通知,在以后的版本。
此外,最大而且,在适用法律法律,安捷伦提供任何保证,明示或暗示,关于本手册的任何信息所载,包括但不不限于隐含保证为杆的适销性和适用性特定用途。
安捷伦不得承担错误或偶然或在相应的损害赔偿连接TION的家具,使用,或每本文件或任何性能所载资料。
应该安捷伦与用户有一个单独的与保修的书面协议在这个物质的范围,涵盖记录与这些冲突条款,在保修则以协议arate中的协议为准。
技术许可硬件和/或软件描述这份文件是依照许可可用于复制或只在雅跳舞的许可条款。
有限权利如果软件在使用的一种表现美国政府的首要合同或道,软件交付和许可!°商业计算机软件!±ADFAR252.227-7014(1995年6月)的定义,或作为一个!°商业项目!FA±定义2.101(a)或°有限计算机软!洁具!±作为定义在FAR52.227-19(六月1987)或任何相当机构法规或合同条款。
使用,重复或disclo的软件肯定是受安捷伦科技nologies!ˉ标准商业许可条款和非DOD部门和美国政府机构没有获得更大而不是限制权利定义在FAR 52.227-19中(C)(1-2)(6月1987年)。
Dell Wyse 5070 扩展式精简型用户端 用户指南说明书

Dell Wyse 5070 Extended 擴充式精簡型用戶端使用者指南2021 8註、警示與警告:「註」表示可以幫助您更有效地使用產品的重要資訊。
:「警示」表示有可能會損壞硬體或導致資料遺失,並告訴您如何避免發生此類問題。
:「警告」表示可能的財產損失、人身傷害或死亡。
© 2018-2021 Dell Inc. 或其子公司。
版權所有,翻印必究。
Dell、EMC 與其他商標均為 Dell Inc.或其子公司的商標。
其他商標可能為其各自擁有者的商標。
章1: 歡迎使用 Dell Wyse 5070 擴充式精簡型用戶端 (6)章2: 機箱概觀 (7)章3: 精簡型用戶端的主要元件 (9)章4: Wyse 5070 精簡型用戶端支援的系統周邊裝置 (10)支援的顯示器 (10)支援的托架 (10)支援的系統周邊裝置 (11)章5: 設定精簡型用戶端 (12)章6: 處理您的精簡型用戶端之前 (16)章7: 處理您的精簡型用戶端之後 (17)章8: 卸下和安裝元件 (18)安全說明 (18)處理您的精簡型用戶端之前 (19)安全預防措施 (19)靜電放電──ESD 保護 (19)ESD 現場維修套件 (20)運送敏感元件 (20)處理您的精簡型用戶端之後 (21)建議的工具 (21)螺絲大小清單 (21)機箱蓋 (22)卸下機箱蓋 (23)安裝機箱蓋 (25)PCIe 模組 (28)卸下 PCIe 模組 (28)安裝 PCIe 模組 (30)幣式電池 (32)卸下幣式電池 (32)安裝幣式電池 (33)固態硬碟 (33)卸下固態硬碟 (34)安裝固態硬碟 (35)擴充模組 (35)卸下擴充模組-VGA-RJ45-SFP (35)安裝擴充模組 - VGA-RJ45-SFP (37)無線網卡 (38)卸下無線網卡 (38)目錄3安裝無線網卡 (39)CAC 讀卡機 (39)卸下 CAC 讀卡機 (39)安裝 CAC 讀卡機 (42)記憶體 (44)卸下記憶體模組 (44)安裝記憶體模組 (48)喇叭和電源按鈕 (49)卸下喇叭和電源按鈕 (49)安裝喇叭和電源按鈕 (51)序列埠與平行埠 (52)卸下序列埠與平行埠 (52)安裝序列埠與平行埠 (54)散熱器 (54)卸下散熱器 (55)安裝散熱器 (56)主機板 (57)卸下主機板 (58)安裝主機板 (60)章9: 技術規格 (61)系統規格 (61)處理器 (61)作業系統 (62)記憶體規格 (62)儲存 (62)音效規格 (63)通訊規格 (63)連接埠和連接器規格 (64)安全保護 (64)電池規格 (64)交流電變壓器規格 (64)實體規格 (65)環境 (65)章10: ThinOS 上的 Wyse 5070 精簡型用戶端組態 (66)簡介 (66)使用「初次開機精靈」設定 ThinOS (66)登入執行 Wyse ThinOS 的 Wyse 5070 精簡型用戶端 (68)本機設定功能表 (68)進行鍵盤設定 (68)進行滑鼠設定 (69)進行顯示設定 (69)進行 LPD 設定 (70)進行印表機設定 (70)進行連接埠設定 (70)進行 LPD 設定 (71)進行 SMB 設定 (71)使用印表機設定選項 (72)4目錄章11: ThinLinux 的 Wyse 5070 精簡型用戶端 (73)簡介 (73)登入執行 ThinLinux 的 Wyse 5070 精簡型用戶端 (73)進行 Wyse ThinLinux 的週邊裝置設定 (73)設定 Dell Wyse ThinLinux 的顯示畫面 (73)進行鍵盤偏好設定 (74)自訂顯示器 (75)進行滑鼠偏好設定 (76)進行印表機設定 (77)章12: Windows 10 IoT Enterprise 的 Wyse 5070 精簡型用戶端 (79)簡介 (79)設定您的精簡型用戶端之前 (79)自動與手動登入 (79)啟用自動登入 (80)鍵盤和地區設定 (80)裝置和印表機 (80)新增印表機 (81)設定多螢幕顯示 (81)章13: BIOS 概觀 (82)存取精簡型用戶端 BIOS 設定 (82)系統設定概觀 (82)開機順序 (83)導覽鍵 (83)General (一般) 畫面選項 (83)System Configuration (系統組態) 畫面選項 (84)Video (影像) 畫面選項 (86)Security (安全性) 畫面選項 (86)Secure Boot (安全開機) 畫面選項 (87)Performance (效能) 畫面選項 (88)Power Management(磁碟管理)畫面選項 (88)POST Behavior(POST 行為)畫面選項 (89)Wireless (無線) 畫面選項 (90)Virtualization Support (虛擬支援) 畫面選項 (90)Maintenance (維護) 畫面選項 (90)「System Log」(系統記錄) 畫面選項 (91)章14: 故障排除您的系統 (92)電源狀態和 LED 狀態 (92)電源行為 (92)電源 LED 錯誤代碼行為 (93)目錄5歡迎使用 Dell Wyse 5070 擴充式精簡型用戶端Wyse 5070 擴充式精簡型用戶端為一款搭載四核心處理器的高效能精簡型用戶端,專為安全而設計,且具備易於管理的虛擬桌面環境。
戴尔 Latitude D520 用户指南.pdf_1700751735.2079167说明书

Dell™ Latitude™ D520 用户指南计算机概览查找信息使用电池使用显示屏使用键盘和触摸板使用多媒体使用插卡设置网络确保计算机的安全故障排除系统设置程序重新安装软件添加和更换部件Dell™ QuickSet携带计算机旅行获得帮助规格附录词汇表单击左侧的链接,即可获得有关计算机特性和操作方法的信息。
有关计算机附带的其它说明文件的信息,请参阅查找信息。
注、注意和警告缩写词和缩略词有关缩写词和缩略词的完整列表,请参阅词汇表。
如果您购买的是 Dell™ n Series 计算机,则本说明文件中有关 Microsoft ® Windows ® 操作系统的所有参考信息均不适用。
此文档中的信息如有更改,恕不另行通知。
© 2006 Dell Inc 。
版权所有,翻印必究。
未经 Dell Inc. 书面许可,严禁以任何形式进行复制。
本文中使用的商标:D e l l 、D E L L 徽标、Inspiron 、Dell Precision 、Dimension 、OptiPlex 、Latitude 、PowerEdge 、PowerVault 、PowerApp 、ExpressCharge 、Dell TravelLite 、Undock & Go 和 Dell OpenManage 是 Dell Inc. 的商标;C o r e 是 Intel Corporation 的商标,I n t e l 、Pentium 和 Celeron 是 Intel Corporation 的注册商标;Microsoft 、Outlook 和 Windows 是 Microsoft Corporation 的注册商标;Bluetooth 是 Bluetooth SIG Inc. 拥有 的注册商标,并授权 Dell 使用;E M C 是 EMC Corporation 的注册商标;能源之星是美国环保局的注册商标。
HP Jet Fusion 5420W 3D 构建单元 产品文档 介绍性信息说明书

HP Jet Fusion 5420W 3D 构建单元产品文档介绍性信息©Copyright 2023 HP Development Company, L.P.版本1法律通告本文档中包含的信息如有更改,恕不另行通知。
有关 HP 产品和服务的全部保修和保证条款,均已在相关产品和服务所附带的保修声明中进行了明确的规定。
本文中的任何内容都不应被引伸为补充保证。
HP 对本文中出现的技术错误、编辑错误或疏漏之处概不负责。
目录HP Jet Fusion 5420W 3D 构建单元介绍性信息 (1)法律通告 (1)安全注意事项 (2)警告标签 (7)电源规格 (11)保修声明 (11)ZHCN iiiiv ZHCNHP Jet Fusion 5420W 3D 构建单元介绍性信息产品简介HP Jet Fusion 3D 构建装置是一种装置,可将准备使用的材料从 HP Jet Fusion 3D 处理站传输到 HP Jet Fusion 3D 打印机; 完成作业后,再回到处理站执行拆封、材料装入和快速冷却(仅适用于高生产率型号)等任务,从而实现生产率最高的连续打印过程。
本文档是对 HP Jet Fusion 3D 打印解决方案主要文档的补充。
内容包括法律通告、安全注意事项、电源规格和保修声明。
有关详细信息,请参阅 HP Jet Fusion 3D 打印解决方案的文档。
用户指南在哪里?您可以从以下网址下载打印机用户指南:■/go/jetfusion3D5200/manuals■/go/jetfusion3D5420W/manuals更多相关信息,可浏览:■/go/jetfusion3D5200/support■/go/jetfusion3D5420W/support有关详细信息,请参阅 HP Jet Fusion 3D打印解决方案的文档。
法律通告©Copyright 2023HP Development Company, L.P.本文档中包含的信息如有更改,恕不另行通知。
戴尔 Latitude 5420 Rugged 维修手册说明书

戴尔 Latitude 5420 Rugged 服务手册8 2021注意、小心和警告:“注意”表示帮助您更好地使用该产品的重要信息。
:“小心”表示可能会损坏硬件或导致数据丢失,并告诉您如何避免此类问题。
:“警告”表示可能会导致财产损失、人身伤害甚至死亡。
© 2019-2021 Dell Inc. 或其子公司。
保留所有权利。
Dell、EMC 和其他商标是 Dell Inc. 或其附属机构的商标。
其他商标可能是其各自所有者的商标。
章 1: 拆装计算机内部组件 (7)安全说明 (7)拆装计算机内部组件之前 (7)安全防范措施 (8)静电放电— ESD 保护 (8)ESD 现场服务套件 (9)运输敏感组件 (9)拆装计算机内部组件之后 (9)章 2: 技术和组件 (10)使用计算机 (10)打开 LCD 盖 (10)隐藏模式 (11)使用背光键盘 (11)启用和禁用无线 (WiFi) 功能 (13)热键定义 (13)AC-DC 适配器 (15)90 瓦 (15)130 瓦 (16)LED 和电缆 (17)电池 (18)电池规格 (18)处理器 (18)Skylake 处理器 (19)Kaby Lake —第 7 和 8 代英特尔酷睿处理器 (21)内存特性 (21)DDR4 (21)显卡选项 (23)显卡规格 (23)AMD Radeon 540 显卡 (27)AMD Radeon RX 540 显卡 (28)Corning Gorilla Glass (28)优点 (28)触控笔的使用 (31)笔势 (31)介质卡读取器 (33)UEFI BIOS (33)系统管理 - 从现场到云 (34)带外系统管理 - 英特尔博锐和英特尔标准可管理性 (34)可信平台模块 (35)指纹读取器 (35)USB 功能 (35)USB Powershare (37)USB Type-C (37)目录3章 3: 卸下和安装组件 (41)安全说明 (41)拆装计算机内部组件之前 (42)安全防范措施 (42)拆装计算机内部组件之后 (48)建议工具 (48)手写笔 (48)卸下手写笔 (48)安装手写笔 (49)SIM 卡 (50)卸下 SIM 卡 (50)安装 SIM 卡 (51)内存卡 (52)安装内存卡 (52)卸下内存卡 (52)手柄 (53)卸下手柄 (53)安装手柄 (54)闩锁盖板 (55)卸下闩锁盖板 (55)安装闩锁盖板 (55)电池 (56)取出电池 (56)安装电池 (57)主要 SSD 托架 (58)卸下主要 SSD 托架 (58)安装主要 SSD 托架 (59)SSD (60)从托架卸下 SSD (60)安装托架内 SSD (61)底部机箱护盖 (61)卸下底部机箱护盖 (61)安装底部机箱护盖 (62)键盘 (64)卸下键盘 (64)安装键盘 (65)WWAN 卡 (67)卸下 WWAN 卡 (67)安装 WWAN 卡 (68)WLAN 卡 (69)卸下 WLAN 卡 (69)安装 WLAN 卡 (69)全球定位系统 (GPS) (70)卸下 GPS 模块 (70)安装 GPS 模块 (71)内存模块 (73)卸下内存模块 (73)4目录取出钮扣电池 (74)安装钮扣电池 (75)PCIe 散热器风扇部件 (76)卸下 PCIe 散热器风扇部件 (76)安装 PCIe 散热器风扇部件 (77)主要 SSD 导轨 (79)卸下主要 SSD 导轨 (79)安装主要 SSD 导轨 (80)对接端口部件 (81)卸下对接端口部件 (81)安装对接端口部件 (82)散热器部件 (84)卸下散热器部件 (84)安装散热器部件 (85)背面输入-输出板 (87)卸下背面 I/O 板 (87)安装背面 I-O 板 (88)铰接部件护盖 (89)卸下铰接部件护盖 (89)安装铰接部件护盖 (91)显示屏部件 (93)卸下显示屏部件 (93)安装显示屏部件 (95)LCD 挡板和后盖部件 (97)卸下 LCD 和挡板以及显示屏后盖部件 (97)安装 LCD 和挡板以及显示屏后盖部件 (98)麦克风 (100)卸下麦克风 (100)安装麦克风 (101)摄像头 (103)卸下摄像头 (103)安装摄像头 (103)电池托盘 (104)卸下电池托盘 (104)安装电池托盘 (105)左 I/O 板 (106)卸下左侧 I/O 子板 (106)安装左侧 I/O 板 (107)智能卡 (109)卸下智能卡读取器 (109)安装智能卡读取器 (111)扬声器 (113)卸下扬声器 (113)安装扬声器 (114)系统板 (115)卸下系统板 (115)安装系统板 (118)底部基座部件 (122)目录5章 4: 诊断程序 (125)ePSA 诊断程序 (125)验证工具 (128)液晶屏内置自检 (BIST) (134)电池状态指示灯 (134)诊断 LED (135)WiFi 重启 (135)BIOS 恢复 (136)从硬盘恢复 BIOS (136)使用 USB 闪存盘恢复 BIOS (137)更新 BIOS (137)在 Windows 中更新 BIOS (137)在 Linux 和 Ubuntu 环境中更新 BIOS (137)在 Windows 环境中使用 USB 驱动器更新 BIOS (138)从 F12 一次性引导菜单更新 BIOS (138)自修复 (138)课程简介 (138)自修复指令 (138)支持的 Latitude 型号 (139)章 5: 获取帮助 (140)联系戴尔 (140)6目录拆装计算机内部组件主题:•安全说明•拆装计算机内部组件之前•安全防范措施•静电放电 — ESD 保护•ESD 现场服务套件•运输敏感组件•拆装计算机内部组件之后安全说明遵循以下安全原则可防止您的计算机受到潜在损坏并确保您的人身安全。
Pyle Pro PTA4 2x120W 立体声放大器用户手册说明书

PTA42x120W Max Stereo Power Amplifierwith AUX CD/MP3 Input and MIC PAGER1 - Pyle Pro PTA4 ManualYour new Pyle Pro PTA4 Stereo Power Amplifiergives you the power and versatility you need in a professional sound system.Its wide frequency response make it suitable for amplifying music or vocalprogram material.The front located 3.5mm jack allows you to connect the input of various ofMP3 devices conveniently and the MIC PAGER/MIXING function offers theflexibility of using it at paging or musical events. It can be used formeeting halls, house, restaurant, school, stores, live bands, or office.FEATURES AND CONTROLSPyle Pro PTA4 Manual - 2FEATURES AND CONTROLS(1) Blue LED Output Level Display(2) Power On/Off and LED IndicatorMain power switch, the indicator lights when the amplifier is turned on.(3) CD/MP3 3.5mm AUX Input Jack (FRONT)Lets you easily connect the computerized MP3 Device (player) sources,such as PC (CD ROM), Laptop, Walkman, iPod, and Cell Phone.(4) 1/4" PHONE JackAccepts headphones with 1/4" plug.(5) MIC Volume ControlLets you adjust the volume of connected MIC to the proper setting.(6) MASTER Volume ControlLets you control the overall volume level. It doesn't affect the volume of MIC.(7) BALANCE ControlLets you adjust the sound balance between the left and right of amplifier outputs.(8) BASS and TREBLE ControlsAllows you to boost or attenuate bass and treble for the desired sound.(9) AUX 1/AUX 2/CD Input SelectorLets you select the desired input music source.(10) Switchable MIC PAGER and MIXING ModesSet to PAGER, the signal from AUX 1/AUX 2/CD will be attenuated BY -12dB and the signal from MIC will override to page (Auto Talkover), it is good for paging system. Set to MIXING, the signals fromAUX 1/AUX 2/CD and MIC will be existed at the same time, it acts like playing at KARAOKE event. (11) 1/4" MIC Input JackLets you connect a microphone with a 1/4" plug.(12) AUX 1/AUX 2/CD RCA InputsLets you connect most high level audio sources such as CD player, tape deck, tuner, camcorder, or VCR.(13) REC RCA OutputLets you connect the amplifier to a tape deck for recording.(14) Push Type Speaker TerminalLets you easily connect speaker wires directly to the amplifier. The speaker impedance can be ranged from 4 to 8 Ohms for the general stereo output. The total speaker impedance must be at least 4-Ohm per channel at stereo mode.(15) 110/220 Voltage SelectorThis amplifier has selectable input voltage from 110V/60Hz (the standard in USA and CANADA) to220V/50Hz (for EUROPEAN operation). Please make sure the switch is in the proper position before operating, otherwise, the severe damage will be incurred and not covered by the warranty.(16) Replaceable Power FuseThe amplifier uses a fuse for protection against surges and short circuit. If the amplifier suddenly turns off and will not turn on, check the fuse and if necessary replace it with a 1.5-amp, 250-volt, fast-acting,5x20mm fuse (not supplied).3 - Pyle Pro PTA4 ManualCONNECTION DIAGRAMPyle Pro PTA4 Manual - 4SpecificationsOutput Power, 2 channels driven4-Ohm, 1 kHz, 1% THD .............................................................................. 20Wx2 4-Ohm, 1 kHz, 10% THD ............................................................................. 32Wx2 Max Power .................................................................................................120Wx2T otal Harmonic Distortion, 1 kHz Rated Power ................................................ 0.3%Input Sensitivity, 1 kHz, 4-Ohm Rated PowerAUX 1 .......................................................................................................... 250mV AUX 2 .......................................................................................................... 250mV CD ............................................................................................................... 250mV MIC .............................................................................................................. 2.5mVFrequency Response ........................................................................... 20Hz-40kHzSignal to Noise Ratio, 1 kHz, 4-Ohm Rated PowerAUX 1 ............................................................................................................ 80dB AUX 2 ............................................................................................................ 80dB CD ................................................................................................................. 80dB MIC ................................................................................................................ 70dBT one ControlsBASS ............................................................................................. +/-12dB, 100Hz TREBLE ......................................................................................... +/-12dB, 10kHzPower Requirement ................................................. 120V AC 60Hz/230V AC 50Hz Power Fuse ......................................................... 1.5 A, 250V fast-acting, 5x20mm Dimensions, inches (mm) WxHxD ..................... 8.27 x 2.72 x 5.39 (210 x 69 x 137) Weight, lbs (kg) ........................................................................................ 5.68(2.58)Specifications are typical; individual units might vary.Specifications are subject to change and improvement without notice.5 - Pyle Pro PTA4 ManualPyle Pro PTA4 Manual - 6Your Pyle Pro Amplifier is an example of superior design and craftsmanship. The following suggestions will help you care for your amplifier so you can enjoy years of use:Keep the amplifier dry. If it gets wet, wipe immediately.Use the amplifier only in well-ventilated installations.Handle the amplifier gently and carefully - do nto drop!Keep the amplifier away from dust adn dirt.Wipe occasionally with a damp cloth to keep it looking new.Do not use harsh chemicals, solvents or detergents!7 - Pyle Pro PTA4 Manual。
戴尔 Latitude 5420 E5420 E5420m 用户手册说明书

Dell Latitude 5420/E5420/E5420m 用户手册管制型号: P15F管制类型: P15F001注、警告和严重警告注: “注”表示可以帮助您更好地使用计算机的重要信息。
小心: “小心”表示如果不遵循说明,就有可能损坏硬件或导致数据丢失。
警告: “严重警告”表示可能会造成财产损失、人身伤害甚至死亡。
本出版物中的信息如有更改,恕不另行通知。
© 2012 Dell Inc. 版权所有,翻印必究。
未经Dell Inc. 书面许可,严禁以任何形式对这些材料进行复制。
本文中使用的商标:Dell™、DELL 徽标、Dell Precision™、Precision ON™、ExpressCharge™、Latitude™、Latitude ON™、OptiPlex™、Vostro™和 Wi-Fi Catcher™是 Dell Inc. 的商标。
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Blu-ray Disc™是 Blu-ray Disc Association (BDA) 拥有的商标并授权于光盘和播放机上使用。
LM49250 评估板用户指南说明书

User's GuideSNAA048A–March2010–Revised May2013AN-1680LM49250Evaluation Board1IntroductionThe LM49250evaluation board is a fully-integrated audio subsystem designed for stereo cell phoneapplications.The LM49250combines2.5W stereo Class D speaker drivers with stereo ground referenced headphone drivers,a class AB earpiece driver,TI3D enhancement,volume control and input mixer into a single device.The filterless class D amplifiers deliver1.19W/channel into an8Ωload with<1%THD+N from a5V supply.The LM49250features a new circuit technology that utilizes a charge pump to generate a negative supply voltage.This allows the outputs to be biased about ground,thereby eliminating output-coupling capacitors typically used with normal single-ended loads.To supply the required voltage level to the groundreferenced amplifier,an LDO has been integrated.For improved noise immunity,the LM49250features fully differential left,right and mono inputs.The three inputs can be mixed/multiplexed to either theloudspeaker,headphone or earpiece amplifiers.The left and right differential inputs can be used asseparate single-ended inputs,mixing multiple stereo audio sources.The mixer,volume control,and device mode select are controlled through an I2C compatible interface.Output short circuit and thermal overload protection prevent the device from being damaged during fault conditions.Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown.The LM49250evaluation board(shown in Figure1)allows the user to easily evaluate the performance and characteristics of the LM49250device.It provides connectors for audio inputs,audio outputs,I2Ccontrol,power supply,and shutdown control.2Quick StartThe following procedures are needed to begin the1.Connect a shunt across the center pin(I2C VDD)and the VDD pin of J9(I2CVDD=VDD).2.Connect a shunt across the center RESET pin and the“+”terminal of J4(I2C reset pin).3.Connect a4Ωor8Ωspeaker across the“+”and“-”pins of J2(left loudspeaker output)and J3(rightloudspeaker output).4.Connect stereo headphones to the headphone jack(U2).5.Connect a16Ωor32Ωspeaker across the“+”and“-”pins of J1(earpiece output).6.Connect a3.6V power supply to the VDD pin of J8,and the power supply ground source to the GNDpin of J8.7.Apply a positive audio signal source to the“+”terminals of J5(right input),J6(left input),and J7(monoinput),and a negative audio signal source to the“-”terminals of J5(right input),J6(left input),and J7(mono input).8.Connect the USB interface card to a PC with the USB cable.Connect cable attached to USB interfacecard to the I2C interface jumper(J10)on demo board.9.Open LM49250I2C interface software.10.Turn on the power supply and audio source.11.In the LM49250I2C interface software(see Figure2)select:•“ON”for Earpiece,Left Loudspeaker,Right Loudspeaker,Left Headphone,and Right Headphone•Mode“2”for Loudspeaker Output Mode,Headphone Output Mode,and Earpiece Output ModeAll trademarks are the property of their respective owners.1 SNAA048A–March2010–Revised May2013AN-1680LM49250Evaluation Board Submit Documentation FeedbackCopyright©2010–2013,Texas Instruments IncorporatedQuick Start 12.Select Chip Power to“ON”to enable the device.13.Adjust the Left,Right,and Mono Volume Control to obtain the desired output level.Table1.Operating Conditions•Temperature Range–40°C≤T A≤+85°C•Supply Voltage(V DD=V DD(LS)=V DD(CP))2.7V≤V DD≤5.5V•I2C Supply Voltage 1.7V≤I2CV DD≤5.5VI2CV DD≤V DDFigure1.Evaluation Board SchematicTable2.Board ConnectorsDesignator Label FunctionJ1EP Mono BTL earpiece audio outputJ2LS_L Left loudspeaker class D audio outputJ3LS_R Right loudspeaker class D audio outputJ4RESET I2C Reset Pin-For normal operation short the center RESET pin to the“+”pin.To reset the PWR_ON bit in the shutdown control register short the centerRESET pin to the“-”terminal.J5IN_R Right,single ended or differential,audio input terminal2AN-1680LM49250Evaluation Board SNAA048A–March2010–Revised May2013Submit Documentation FeedbackCopyright©2010–2013,Texas Instruments Incorporated I2C Software InterfaceTable2.Board Connectors(continued)Designator Label FunctionJ6IN_L Left,single ended or differential,audio input terminalJ7IN_M Mono differential audio input terminalJ8V DD GND Power Supply ConnectionIf a separate I2C power supply voltage is used:Connect the positive voltagesource to the center I2CV DD terminal and the ground source to the pin on J9 J9I2CV DDlabeled GND.If a separate I2C power supply is not used:Connect the centerI2CV DD to the pin on J9labeled V DD.I2C signal terminals.Pin1is for the SCL signal,pin2is for the ADR signal,pin J103is for the SDA signal,pin4is for I2C V DD,and pin5is ground(as labeled onthe evaluation board).J11HP_R Right ground referenced headphone output terminalJ12HP_L Left ground referenced headphone output terminalTable3.Evaluation Board Bill of MaterialsDesignator Part Description Manufacturer Part NumberC1–C6Ceramic capacitor1μF16V X7R120610%muRata GRM319R71C105KC11D C7,C13,C14,C15Ceramic capacitor2.2μF16V X5R0805muRata GRM21BR61C225KA88L C8,C9,C10Ceramic capacitor2.2μF16V X5R0805muRata GRM21BR61C225KA88LC11,C12Ceramic capacitor68nF16V X7R0805muRata GRM188R71C683KA01D C16Ceramic capacitor1μF16V X7R0805muRata GRM21BR71C105KA01LR1,R2Resistor0W1/8W5%0805SMD3I2C Software InterfaceThe LM49250evaluation board is controlled through an I2C compatible USB interface.The LM49250I2C interface software provides a user friendly interface to easily evaluate the functionality of the device.Each button corresponds to bits in an I2C command byte.For detailed I2C information,see the LM49250data sheet.Figure2.LM49250I2C Software Interface3 SNAA048A–March2010–Revised May2013AN-1680LM49250Evaluation Board Submit Documentation FeedbackCopyright©2010–2013,Texas Instruments IncorporatedDefault 4DefaultThe DEFAULT button sets the LM49250and the interface software to its default state.In the default state all output amplifiers,spread spectrum,and3D controls are off,all output modes are set to0,the fullydifferential input mode is selected,all input gains are set to-64dB,right and left loudspeaker output gain is 6dB,and headphone and earpiece output gain are set to0dB.Each time the power supply to the device is cycled,the interface must be reset to its default state.5Chip PowerThe Chip Power button enables or disables the entire device.Even if an individual amplifier channel is enabled,the device will not output any audio if the Chip Power button is set to“OFF”.6LDOHThe LDOH button enables and disables the internal LDO.The LDO is used to drive the ground referenced headphone amplifiers.This allows the speaker and headphone amplifiers to operate from separate power supplies.The separate power supplies allow the speaker amplifiers to operate from a higher voltage for maximum headroom,while the headphone amplifiers operate from a lower voltage,improving powerdissipation.If the LDO and the Chip Power is enabled,2.25V will be seen at the VO(LDO)pin.However,if the LDO is disabled but either headphone output is enabled,2.25V will be seen at the VO(LDO)pin(see Table3).Table4.LDO Disabling OptionsLDOH HPR_ON/HPL_ON PWR_ON V O(LDO)(V)00X0011 2.251X0VDD110 2.250107Spread SpectrumThe LM49250features a filterless spread spectrum modulation scheme.The switching frequency varies which reduces the wideband spectral content.This improves EMI emissions radiated by the speaker and associated cables and traces.The spread spectrum function can be turned on and off through the“SS”section of the interface software.8Input Audio Signal SelectionThe LM49250has a single mono differential input and left and right stereo inputs that can be configured for both single-ended and differential audio signals.The stereo input configurations can be set in the“STEREO INPUT CONFIGURATION”portion of the software interface.•Select“FULLY DIFFERENTIAL INPUT MODE”to configure the left and right inputs for differential operation.•Select“L2and R2SINGLE-ENDED STEREO PAIR”to configure the device to accept single ended audio inputs connected to L2and R2.•Select“L1and R1SINGLE-ENDED STEREO PAIR”to configure the device to accept single ended audio inputs connected to L1and R2.•Select“(L1mix L2)and(R1mix R2)SINGLE ENDED STEREO PAIR”to configure the device to accept two single ended stereo sources,connected to both input pairs.4AN-1680LM49250Evaluation Board SNAA048A–March2010–Revised May2013Submit Documentation FeedbackCopyright©2010–2013,Texas Instruments Incorporated Volume Control and Gain Setting 9Volume Control and Gain SettingEach channel of the LM49250has two separate gain stages.Each input stage(mono,left and right)features a32step volume control that can be configured through the“INPUT VOLUME CONTROL”section of the interface software.The output gain settings can be set under the“Output Gain Settings”tab in the interface software.The loudspeaker output gain for the left and right channels are setindependently,while the headphone gain is the same for both left and right channels.The earpiece output stage has two gain settings,0dB and6dB.Each loud speaker output stage has two gain settings,6dB and12dB.The headphone output stage has8gain settings,0dB,-1.2dB,-2.5dB,-4dB, -6dB,-8.5dB,-12dB and-18dB.In single-ended input mode with only one stereo signal applied,theloudspeaker and headphone output stage gain settings are increased by6dB.The total gain for a given signal path can be calculated by adding the input volume control gain to the output gain setting.10Demonstration Board LayoutFigure3.Top Silkscreen5 SNAA048A–March2010–Revised May2013AN-1680LM49250Evaluation Board Submit Documentation FeedbackCopyright©2010–2013,Texas Instruments IncorporatedDemonstration Board Layout Figure4.Top Layeryer26AN-1680LM49250Evaluation Board SNAA048A–March2010–Revised May2013Submit Documentation FeedbackCopyright©2010–2013,Texas Instruments Incorporated Revision Historyyer3Figure7.Bottom Layer11Revision HistoryRev Date Description1.003/09/10Initial WEB released.7 SNAA048A–March2010–Revised May2013AN-1680LM49250Evaluation Board Submit Documentation FeedbackCopyright©2010–2013,Texas Instruments IncorporatedRevision History 8AN-1680LM49250Evaluation Board SNAA048A–March2010–Revised May2013Submit Documentation FeedbackCopyright©2010–2013,Texas Instruments IncorporatedIMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries(TI)reserve the right to make corrections,enhancements,improvements and other changes to its semiconductor products and services per JESD46,latest issue,and to discontinue any product or service per JESD48,latest issue.Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.All semiconductor products(also referred to herein as“components”)are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.TI warrants performance of 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TI is not responsible or liable for any such statements.Buyer acknowledges and agrees that it is solely responsible for compliance with all legal,regulatory and safety-related requirements concerning its products,and any use of TI components in its applications,notwithstanding any applications-related information or support that may be provided by TI.Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failures,monitor failures and their consequences,lessen the likelihood of failures that might cause harm and take appropriate remedial actions.Buyer will fully indemnify TI and its representatives against any damages arising out of the use of any TI components in safety-critical applications.In some cases,TI components may be promoted specifically to facilitate safety-related applications.With such components,TI’s goal is to help enable customers to design and create their own end-product solutions that meet applicable functional safety standards and requirements.Nonetheless,such components are subject to these terms.No TI components are authorized for use in FDA Class III(or similar life-critical medical equipment)unless authorized officers of the parties have executed a special agreement specifically governing such use.Only those TI components which TI has specifically designated as military grade or“enhanced plastic”are designed and intended for use in military/aerospace applications or environments.Buyer acknowledges and agrees that any military or aerospace use of TI components which have not been so designated is solely at the Buyer's risk,and that Buyer is solely responsible for compliance with all legal and regulatory requirements in connection with such use.TI has specifically designated certain components as meeting ISO/TS16949requirements,mainly for automotive use.In any case of use of non-designated products,TI will not be responsible for any failure to meet ISO/TS16949.Products ApplicationsAudio /audio Automotive and Transportation /automotiveAmplifiers Communications and Telecom /communicationsData Converters Computers and Peripherals /computersDLP®Products Consumer Electronics /consumer-appsDSP Energy and Lighting /energyClocks and Timers /clocks Industrial /industrialInterface Medical /medicalLogic Security /securityPower Mgmt Space,Avionics and Defense /space-avionics-defense Microcontrollers Video and Imaging /videoRFID OMAP Applications Processors /omap TI E2E Community Wireless Connectivity /wirelessconnectivityMailing Address:Texas Instruments,Post Office Box655303,Dallas,Texas75265Copyright©2013,Texas Instruments Incorporated。
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FLUKE54200中文操作书仪器的设定和检查开机之后, 仪器自动地被设定为上一次关机之前的设置。
例如:图3-1. 主菜单z按standard 软键(F1)出现选定国家的省缺设置子菜单,例如,英国图3-2. 该国家的视频标准和伴音制式z按edit 软键(F3)弹出预先定义的国家目录列表菜单按↑或者↓软键(F1或者F2)选择国家,例如,德国。
如果你需要的国家没有被列出, 就选择一个和你要使用的国家相同或相似的视频标准和伴音制式。
图3-3. 预先定义的国家目录列表菜单z按enter 软键(F5)确认你的选择屏幕显示出你所选择国家的视频标准和伴音制式图3-4. 所选国家的视频标准和伴音制式z如果你的电视机不支持该制式,可以通过按↑或者↓软键(F1或者F2)来选择你所需要的视频标准和伴音制式,例如,FM Germanyz按edit 软键(F3)z按↑或者↓软键(F1或者F2)来选择你所需要的标准和伴音制式,例如,FM Monoz按enter 软键(F5)确认你的选择z再按enter 软键(F5)回到主菜单图3-5. 设定后的主菜单z检查video(视频)和 chroma(色度)的幅度是否设置为 100%z如果不是,按video 软键(F2),屏幕显示出video(视频)子菜单当前所有的设置。
图3-6. video(视频)子菜单当前的设置z按edit 软键(F3)z弹出一个可以输入数字的菜单图3-7. video(视频)幅度设置z使用数字按键输入100 按enter 软键(F5)确认你的输入按↑软键(F2)来选择chroma(色度)z使用数字按键输入100 按enter 软键(F5)确认你的输入再按enter 软键(F5)回到主菜单图3-8. 改变设置后的主菜单z按显示屏右边的FREQ 键,选择适当的射频载波频率,例如,203.25 MHz z弹出一个数字输入菜单图3-9. 载波频率设置z使用数字按键输入203.25z按enter 软键(F5)确认你的输入图3-10. 选定载波频率z将你的电视机设置为相同的频率或相应的电视频道,在这个例子里,是9频道。
载波频率和电视频道之间的对应关系,见附录B。
z按显示屏右边的LEVEL键,选择适当的载波电平。
图3-11. 载波电平设置z按↑或者↓软键(F1或者F2)来选择电平单位,dBµV 或者mV。
z按edit 软键(F3)用数字按键输入8 0 dBµV或者1 0 mVz按enter 软键(F5)确认你的输入图3-12. 最终设置z按sound软键(F3)检查伴音的设置z出现伴音设置子菜单图3-13. 伴音参数设置检查伴音是否设置在内部(Int)和频率选择是否适当,例如:CH 1 ,1.0 kHz。
如果不是,则:按↓软键(F2)选择CH 1按edit 软键(F3)弹出一个可选择调制频率的菜单图3-14. 调制频率设置z按↑或者↓软键(F1或者F2)来选择适当的频率z按enter 软键(F5)确认你的输入z再按enter 软键(F5)回到主菜单z在PATTERN区按COLOR BAR键z弹出一个可选择彩条参数的菜单图3-15. 图象参数z按↑或者↓软键(F1或者F2)选择COL_100_25或者COL_75_25z按enter软键(F5)确认你的输入z在PATTERN区按GREYSCALE, MULTIBURST, 和CIRCLE键z用适当的射频连接线,例如,54200附带的BNC到电视的射频电缆,将54200前面板的RF OUTPUT(射频输出)连接到电视机的天线头。
z用电视机检查视频和伴音在这个例子里,你将看到以下的组合测试图象和听到1 kHz的伴音图3-16. 组合测试图象z在PATTERN区选择不同的测试图象更详细的操作原理和测试图象的应用见第四章(如何使用仪器)。
前面板电源开关,,开这五个软键用来选择功能或改变参数,随着模式的改变,软键的功能随着改变。
软键上方屏幕显示的功能就是软键当前的功能。
步进键上和下用来改变参数设置FREQ键用来显示RF(射频)频率,弹出窗口选择:-RF(射频)载波频率(图象载波)-步进功能LEVEL键用来显示RF(射频)电平,弹出窗口选择:-RF(射频)电平设置-电平单位mV或者dBµV -电平范围,低(10 mV) 或者高 (100 mV)-步进功能STORE键用来保存仪器的设置(99组存储记录)RECALL键用来调出保存仪器设置的记录(99组存储记录和1组省缺设置)用来选择电视制式PAL, NTSC或者SECAM。
用来选择:- 内部或者外部视频调制 - 视频信号开/关(ON/OFF) - 色度信号开/关(ON/OFF)用来选择:- 伴音模式MONO, DUAL 或者 SAP, STEREO - 内部或者外部伴音调制-伴音通道1和通道2分别开/关(ON/OFF ),即左/右-长时间压住按键可以弹出音频菜单:CH1调出S1或者S3的调制菜单,CH2调出S2的调制菜单16个键用选择单个或者组合的视频测试图象。
按键上方的LED灯(发光二级管)指示当前的状态是开还是关(on/off)。
有些按键长时间压住可以弹出参数菜单或者图象的版本。
这些按键用来输入:- 频率、电平的数值等- 图文模式的字符,例如, VPS 或者PDC 节目标题带背景灯的显示屏幕, 1/4 VGA。
连接到后面板的“TO FRONT” BNC连接头外部复合视频信号(CVBS)输入(75Ω),BNC连接头复合视频信号(CVBS)输出(75Ω),BNC连接头RF射频信号输出(75Ω),BNC连接头后面板带保险丝的电源插座用于遥控的IEEE-488 总线连接头用于遥控的RS-232连接头R G B输出(75Ω),3个BNC连接头:红、绿、蓝信号视频分量输出Y/CR /CB(75Ω),3个BNC连接头:- Y = Y 分量(包括图文)- CR R-Y分量- CB B-Y分量同步输出(75Ω),3个BNC连接头:- COMP = 复合同步- LINE = 行同步- FIELD = 场同步NICAM(丽音)输出(50Ω),2个BNC连接头:- DATA = NICAM(丽音)数据Data - CLOCK =NICAM(丽音)时钟MTS IN: BTSC基带信号MTS输入(1 MΩ),BNC连接头MTS/PILOT OUT:BTSC基带信号输出和FM立体声导频信号输出(600Ω),BNC连接头SOUND IF OUT:输出调制的中频伴音载波信号(50Ω),BNC连接头:TO FRONT:连接到前面板的“TO REAR” BNC连接头外部音频信号输入,(0.1 MΩ),2个cinch 端子:- Left = 音频通道 1 - Right =音频通道2内部产生或外部提供的音频信号输出,(600Ω),2个cinch 端子:- Left = 音频通道 1 - Right =音频通道2音频/视频输入,SCART/Euro-AV连接头,电视和视频系统的标准连接音频/视频输出,SCART/Euro-AV连接头,电视和视频系统的标准连接Y/C输出 (75Ω),S端子,4针。
具体操作说明主菜单显示当前最重要的设置,显示的信息取决于你所选择的电视和伴音制式,例如:图4-1. 主屏幕Vision carrier frequency: 471.25 MHz Vision carrier level: 10.0 mVLevel range: Low (up to 10 mV)TV system: NTSC MVideo source: InternAspect Ratio: 4:3Video amplitude: 100%Chroma amplitude: 100%Sound system: BTSCSound mode: MonoSound source: InternalDigital Services: Closed Caption (CC) 图象载波频率:471.25 MHz图象载波电平: 10.0 mV电平范围:低 ( 可高至 10 mV) 电视制式:NTSC M视频来源:内部显示比率: 4:3视频幅度:100%色度幅度: 100%伴音制式:BTSC伴音模式:单声道伴音来源:内部数据服务: 隐藏式字幕(CC字幕)屏幕下方最低一行显示软键F1到F5所代表的功能。
从主屏幕,你可以用5个软键调出5个子菜单进行不同的选择和设置。
电视标准子菜单图4-2. 电视标准子菜单Country with standard settings: USA * TV system: NTSC M *TV lines per frame: 525Field frequency: 60 HzGroup delay: On *Residual carrier: Low *Sound system: BTSC *Sound mode: MonoSound carrier frequency: 4.50 MHz* Parameter can be changed in this submenu. 国家标准设置:USA *电视制式:NTSC M*线/帧:525场频:60 Hz群延时:开*残余载波:低*伴音制式:BTSC *伴音模式:单声道伴音载波频率:4.50 MHz* 指该子菜单的参数能够被改变z按↑或者↓软键(F1或者F2)来选择你想要改变的参数。
被选择的参数会反相显示。
z按edit 软键(F3),弹出一个可以选择设置的菜单z按↑或者↓软键(F1或者F2)来选择设置。
显示灰色的设置是由于已选定了电视制式而不能改变。
z按enter 软键(F5)确认你的选择z再按enter 软键(F5)回到主菜单视频子菜单图4-3. 视频子菜单Test pattern: Digital ScanTV system: NTSC MVideo amplitude: 100% *Insertion Reference SignalIRS17 (Reference Line): Off * Video source: Internal *Scart output signal: CVBS *CVBS status: Auto *Aspect Ratio: 4:3 *Video polarity: Positive *Sync in RGB signal: Off *Group delay: On *Chroma amplitude: 100% ** Parameter can be changed in this submenu. 测试图象:数字扫描电视制式:NTSC M视频幅度:100% *插入参考信号IRS17 (参考线): 关 *视频来源:内部*Scart输出信号:CVBS * CVBS 状态:自动 *显示比率: 4:3 *视频极性:正*RGB同步信号:关*群延时:开*色度幅度: 100% ** 指该子菜单的参数能够被改变z按↑或者↓软键(F1或者F2)来选择你想要改变的参数。