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FM550-T中文资料

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0.032(0.8) Typ. 0.040(1.0) Typ. 0.152(3.8) 0.144(3.6)
0.189(4.8) 0.173(4.4)
0.244(6.2) 0.228(5.8)
0.087(2.2) 0.071(1.8)
0.040 (1.0) Typ.
Mechanical data
Case : Molded plastic, JEDE DO-214AB C Terminals : Solder plated, s olderable per MIL-STD-750, Method 2026 Polarity : Indicated by cathode band Mounting P osition : Any Weight : 0.00585 ounce, 0.195 gr am
6.0 5.0
50
INSTANTANEOUS FORWARD CURRENT,(A)
0-T ~F M5 40 0-T -T ~F FM M5 58 60 0-T T~ FM 51 00 -T
FM 55
4.0
-T 00 51 FM T~ 055 T FM 054 FM T~ 052 FM
3.0 2.0 1.0 0 0 20 40 60
10
Tj=75 C
1.0
.1
Tj=25 C
.01
.05
.1
.5
1
5
10
50
100
.01 0
20
40
60
80
100 120 140
REVERSE VOLTAGE,(V)
PERCENT OF RATED PEAK REVERSE VOLTAGE,(%)

10 3.0 1.0
80
100
120
140
160
180
200
AMBIENT TEMPERATURE,( C)
FM 52
Tj=25 C Pulse Width 300us 1% Duty Cycle
FIG.3-MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT
150
0.1
PEAK FORWARD SURGE CURRENT,(A)
120
.01
.1
.3
.5
.7
.9
1.1
1.3
1.5
90
Tj=25 C 8.3ms Single Half Sine Wave JEDEC method
FORWARD VOLT AGE,(V)
60
30
FIG.5 - TYPICAL REVERSE
元器件交易网
RATING AND CHARACTERISTIC CURVES (FM520-T THRU FM5100-T)
FIG.1-TYPICAL FORWARD CURRENT DERATING CURVE
AVERAGE FORWARD CURRENT,(A)
FIG.2-TYPICAL FORWARD CHARACTERISTICS
Features
Plastic package has Underwriters Laboratory Flammability Classification 94V-O Utilizing Flame Retardant Epoxy Molding Compound. For surface mounted applications. Exceeds environmental standards of MIL-S-19500 / 228 Low leakage current.
Dimensions in inches and (millimeters)
MAXIMUM RATINGS (AT TA=25oC unless otherwise noted)
PARAMETER Forward rectified current Forward surge current See Fig.1 8.3ms single half sine-wave superimposed on rate load (JEDEC methode) VR = VRRM TA = 25o C CONDITIONS Symbol IO IFSM MIN. TYP. MAX. 5.0 150 0.5 50 Rq JA CJ TSTG -55 15 380 +150
元器件交易网
Chip Schottky Barrier Diodes
FM520-T THRU FM5100-T
Silicon epitaxial planer type
Formosa MS
SMC-T
0.276(7.0) 0.260(6.6) 0.012(0.3) Typ.
IR
C
SYMBOLS
MARKING CODE SS52 SS53 SS54 SS55 SS56 SS58 S510
V RRM
*1
V RMS
*2
VR
*3
VF
*4
Operating temperature (o C)
(V) FM520-T FM530-T FM540-T FM550-T FM560-T FM580-T FM5100-T 20 30 40 50 60 80 100
0 1 5 10 50 100
CHARACTERISTICS 100
NUMBER OF CYCLES AT 60Hz
FIG.4-TYPICAL JUNCTION CAPACITANCE
1400 1200 1000 800 600 400 200 0
JUNCTION CAPACITANCE,(pF)
REVERSE LEAKAGE CURRENT, (mA)
o
UNIT A A mA mA C / w pF
o
Reverse current Thermal resistance Diode junction capacitance Storage temperature
VR = VRRM TA = 125o C Junction to ambient f=1MHz and applied 4vDC reverse voltage
(V) 14 21 28 35 42 56 70
(V) 20 30 40 50 60 80 100
(V)
0.55
-55 to +125
*1 Repetitive peak reverse voltage
0.70 -55 to +150 0.85
*2 RMS voltage *3 Continuous reverse voltage *4 Maximum forward voltage

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FTM-350 中文说明书

FTM-350 中文说明书


[SET]（设置模式）键
按此键可进入设置模式。
[DIAL] 旋钮
旋转该旋钮可以选择左侧 接收机的操作频率 （或存储信道）。 按住该旋钮一秒钟，能够以每次 1 MHz 的步 进调整 VFO 频率。 当左侧 接收机设置为“主”频段时，按一下 该旋钮即可激活频谱功能。 当左侧 接收机设置为“次”频段时，按一下 该旋钮即可将左侧 接收机切换至“主”频段。
[DIAL] 旋钮
旋转该旋钮可以选择右侧 接收机的操作频率 （或存储信道）。 按住该旋钮一秒钟，能够以每次 1 MHz 的步 进调整 VFO 频率。 当右侧 接收机设置为“主”频段时，按一下 该旋钮即可激活频谱功能。 当右侧 接收机设置为“次”频段时，按一下 该旋钮即可将右侧 接收机切换至“主”频段。
[PTT] 键
按下该键可进行发射。
麦克风
[B]（频段）键
按下该键可更改主频段的操作频段。 可用频段包括 ： 左频段 ：调幅广播、调频广播、144 MHz 频段、
430 MHz 频段和音频线路输入 右频段 ：144 MHz 频段和 430 MHz 频段 你可以通过设置模式项“B05 ：RX EXPANSION” 调用增加的操作频段。见 35 页。
前面板的控制按钮与开关
[FWD]/[BCK]（翻页）键
通过这两个键可以方便地选择操作功能页面。 可用的页面包括：“电台”页面、“定时器”页面、 “气压 / 海拔”页面、“导航”页面※ 以及“GPS 状态”页面※。 ※ ：所需选购的“FGPS-1”GPS 设备。 按住这些键可以在双频接收功能的“开”和“关” 之间进行切换。
[F]（功能）键
按该键可更改 [SMART FUNCTION] 键的当前 功能。
DIAL 照明 [VOL] 旋钮
无线电广播和收音机知识介绍

无线电广播和收音机知识介绍

本文由lipengfeixp贡献doc文档可能在WAP端浏览体验不佳。

建议您优先选择TXT，或下载源文件到本机查看。

无线电广播和收音机知识介绍无线电广播和接收是永远联系在一起的，就象鱼和水的关系一样。

德生公司本着专业、专心的原则，致力于收音机、接收机产品的研制、开发和生产，同时我们也始终关心广播事业的发展。

希望我们向大家介绍的无线电广播知识及一些有关收音机的知识能够满足您的要求，如果您有什么意见和建议，请您不吝赐教。

无线电知识介绍耳机中传来《圣经》故事——无线电通信的发明 1906 年 12 月 24 日圣诞节前夕，在美国新英格兰海岸附近穿梭往来的船只上，一些听惯了"嘀嘀嗒嗒"莫尔斯电码声的报务员们，忽然听到耳机中传来了人的说话声和乐曲声朗读《圣经》故事、演奏小提琴和播放亨德尔的《舒缓曲》唱片，最后还听到了亲切的祝福声。

报务员们听到的就是人类历史上第一次试验性的无线电广播，它是由加拿大出生的物理学家费森登主持和组织，并从他的实验室里播出的。

费森登是最早研究无线电广播的先驱者之一。

1900 年，他为美国国家气象局进行无线电实验时，初次萌生了用无线电传达人声的设想。

两年以后，在两位金融家的赞助下，他在马萨诸塞州布兰特岩城建立了一个实验室，在电线、真空管、电池和天线中寻找途径，试图把人的声音加入在无线电波里放送出去。

他想要播出的，不是莫尔斯电码的"嘀嗒"声，而是现实世界中的各种声音。

他整整花了 4 年时间，终于完成了一套广播装置，做成了特殊的高频交流发射机，并设计出了一种系统，用来调制电波的振幅，使它能携带各种声音信号，这样，这种"调幅波"就能载着声音开始展翅飞翔了。

1906 年，人类历史上第一次无线电广播就这样实现了。

虽然前后不过几分钟，但却预示着人类传播信息的一次革命。

正规的定时广播是从 1920 年开始的。

马可尼公司取得英国政府的许可证，在英国的切姆斯福以 2800 米的波长、15 千瓦的功率定时播送新闻节目。

FMMT549;中文规格书,Datasheet资料

FMMT549;中文规格书,Datasheet资料

Absolute Maximum Ratings* T A = 25°C unless otherwise noted* These ratings are limiting values above which the serviceability of any semiconductor device may be impaired.NOTES:1)These ratings are based on a maximum junction temperature of 150 degrees C.2)These are steady state limits. The factory should be consulted on applications involving pulsed or low duty cycle operationsThermal Characteristics ** Device mounted on FR-4 PCB 4.5” X 5”, mounting pad 0.02 in 2 of 2 oz copper.SymbolParameterValueUnitV CEO Collector-Emitter Voltage-30V V CBO Collector-Base Voltage -35V V EBO Emitter-Base Voltage-5V I C Collector Current - Continuous- Peak Pulse Current -1-2A A T J Junction Temperature 150°C T STGStorage Temperature Range-55 to +150°CSymbolParameterValueUnitP D Total Device Dissipation, by R θJA Derate above 25°C5004mW mW/°C R θJAThermal Resistance, Junction to Ambient250°C/W1. Base2. Emitter3. CollectorMarking : 5491I C = -2A, I B = -200mA-750mV V BE (sat) Base-Emitter Saturation Voltage I C = -1A, I B = -100mA-1.25V V BE (on) Base-Emitter On Voltage I C = -1A, V CE = -2.0V-1.0V Small Signal Characteristics100MHzf T Current Gain Bandwidth Product I C = -100mA, V CE = -5V,f = 100MHzC ob Output Capacitance V CB = -10V, I E = 0, f = 1MHz25pF* DC Item are tested by Pulse Test: Pulse Width≤300μs, Duty Cycle≤2%The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is notAccuPower¥Auto-SPM¥Build it Now¥CorePLUS¥CorePOWER¥CROSSVOLT¥CTL™Current Transfer Logic™ EcoSPARK®EfficentMax™ EZSWITCH™*™*®Fairchild®Fairchild Semiconductor®FACT Quiet Series™ FACT®FAST®FastvCore¥FETBench¥FlashWriter®*FPS¥F-PFS¥FRFET®Global Power Resource SMGreen FPS¥Green FPS¥ e-Series¥G max™GTO¥IntelliMAX¥ISOPLANAR¥MegaBuck™MICROCOUPLER¥MicroFET¥MicroPak¥MillerDrive™MotionMax™Motion-SPM™OPTOLOGIC®OPTOPLANAR®®PDP SPM™Power-SPM¥PowerTrenchPowerXS™Programmable Active Droop¥QFET®QS¥Quiet Series¥RapidConfigure¥™Saving our world, 1mW/W/kW at a time™SmartMax™SMART START¥SPM®STEALTH™SuperFET¥SuperSOT¥-3SuperSOT¥-6SuperSOT¥-8SupreMOS™SyncFET™Sync-Lock™®*The Power FranchiseTinyBoost¥TinyBuck¥TinyCalc¥TinyLogic®TINYOPTO¥TinyPower¥TinyPWM¥TinyWire¥TriFault Detect¥TRUECURRENT¥*P SerDes¥UHC®Ultra FRFET¥UniFET¥VCX¥VisualMax¥XS™* Trademarks of System General Corporation, used under license by Fairchild Semiconductor.DISCLAIMERFAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS.LIFE SUPPORT POLICYFAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.As used herein:1. Life support devices or systems are devices or systems which, (a) areintended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support, device, orsystem whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.ANTI-COUNTERFEITING POLICYFairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, , under Sales Support.Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor products are experiencing counterfeiting of their parts. Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substandard performance, failed applications, and increased cost of production and manufacturing delays. Fairchild is taking strong measures to protect ourselves and our customers from the proliferation of counterfeit parts. Fairchild strongly encourages customers to purchase Fairchild parts either directly from Fairchild or from Authorized Fairchild Distributors who are listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors are genuine parts, have full traceability, meet Fairchild's quality standards for handling and storage and provide access to Fairchild's full range of up-to-date technical and product information. Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address any warranty issues that may arise. Fairchild will not provide any warranty coverage or other assistance for parts bought from Unauthorized Sources. Fairchild is committed to combat this global problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors.PRODUCT STATUS DEFINITIONSDefinition of TermsDatasheet Identification Product Status Definition分销商库存信息: FAIRCHILD FMMT549。

客户培训手册(IP中文)(T550)

客户培训手册(IP中文)(T550)

客户培训手册TANDBERG一、设备的简易安装：1．首先将设备小心轻放到机柜中（或放到预先设好的位置）。

2．电视机与设备的链接：分别将两根A V接口（S端子）的一端插入视频设备的VIDEO OUT/AUDIO OUT，另一端插入电视机的视频/音频输入端口。

（若用显示器作为视频输出的话，那么将VGA线的一端插入设备的VGA OUT接口，另一端连接显示器或者投影机）3．麦克风与设备的链接：将麦克风线的一端连接麦克风，另一端插入设备的AUDIO IN接口。

4．局域网（IP）连线：将IP连线插入设备的LAN接口。

5．最后链接电源线。

检测无误后开机。

注：连线时应尽量条理清晰、整洁。

尽量避免线路间的交叉缠绕。

二、网络的设置：1．基本设置操作步骤：Menu Teminal Setting（终端设置）Language 选择菜单的语言Chinese Simplified（简体中文）在Menu 基本设置选择自动应答开2．IP网络设置操作步骤：Menu 终端设置LAN 设置IP设置IP地址、子网掩码等Restart（重启设备）。

注：在完成IP的设置后，系统必须重新启动后，设置才能生效。

3．GK注册设置操作步骤：Menu 终端设置LAN 设置H.323设置 E.164、GK等设置。

4．ISDN网络设置（目前用不上）操作步骤：Menu 终端设置网络ISDN-BRI 设置例如：ISDN 1，Number1 12345678Number2 12345678ISDN 2，Number1 12345677Number2 12345677ISDN 3，Number1 12345679Number2 12345679三、呼叫：1）发起呼叫1．使用IP网络拨出呼叫：A．使用最大带宽呼叫：操作步骤：直接用数字键拨对方IP地址按蓝色快捷键选择MAX OK ConnectB．指定带宽呼叫：操作步骤：直接用数字键拨对方IP地址按蓝色快捷键选择呼叫带宽OK Connect 。