EB2GP第二章选频网络14S03一本
MOTOTRBO 专业数字两路无线电重复器 2 加速性能说明书
MOTOTRBO™PROFESSIONAL DIGITAL TWO-WAY RADIO REPEATERS2ACCELERATE PERFORMANCEMOTOTRBO ™ pROfESSIOnAl DIgITAl TWO-WAy RADIO SySTEM ThE fuTuRE Of TWO-WAy RADIO,employees and lower operating costs for your business.Motorola is a company of fi rsts with a rich heritage of innovation. We continue to invent what’s next connecting people, delivering mobility and making technology personal. Versatile and powerful,MOTOTRBO combines the best in two-way radio functionality with digital technology, making it the ideal communication solution for your business. You get enhanced features, increased capacity, integrated data applications, exceptional voice quality and extended battery performance. This means more productiveThE DIgITAl DIffEREncETwo-way radio has been a successful analogue communication solution for generations, and it proves itself every day in countless deployments around the world.But in today’s technologically advanced environment, a new platform is possible, a digital platform that breaks through to new levels of performance and productivity.In the same way digital technology has transformed other media, it is now revolutionising the way mobile professionals communicate. The time to take advantage of digital two-way radio technology is now.TAkE ADvAnTAgE Of DIgITAlDigital two-way radios offer several advantages over analogue solutions, to name a few:• C learer audio to help assure messages are understood without background noise and static• I ntegrated data applications such as text messaging, GPS-based location tracking, work order ticket management and much more • 40% longer battery life for extended work shifts• I ncreased capacity – twice the number of users for the price of one frequency licenseTDMA – ThE BEST chOIcEThere are two primary digital radio technologies: Time-Division Multiple-Access (TDMA) and Frequency-DivisionMultiple-Access (FDMA).While both digital technologies provide significant benefits over analogue, TDMA is the best choice.TDMA technology delivers advantages over fDMA• D ouble your capacity per channel with less than half the infrastructure per channelT DMA divides your existing channels into two time slots enabling you to double the number of users on your system or utilise data applications. A second call does not require a second repeater, resulting in lower costs for you, as you do not need to purchase, install and maintain additional infrastructure equipment.• D ouble your capacity without the hassleTDMA provides two time slots on your existing licensed channels, doubling your capacity. There is no increased risk of interference, and there is no need for new licenses, simply amend your existing licenses to specify digital. Compatibility with all legacy radios working in 12.5 kHz analogue channels is also maintained by TDMA.• L onger battery lifeTDMA uses only half of the transmitter’s capacity, resulting in longer battery life. During long work shifts or where productivity enhancing data applications place an increased power demand on the radio, this extended battery life is invaluable.• A dvanced featuresT DMA enables smart control features like “transmit interrupt” that makes it possible to interrupt lower priority communication so critical instructions can be delivered exactly when they’re needed. And to help you maximise your infrastructure investment, TDMA can transmit voice and data on the same channel.34MOTOTRBO offers a robust, standards-based solution that can be tailored to meet your unique coverage and feature needs. This versatile portfolio provides a complete system of portable radios, mobile radios, repeaters, accessories, data applications, and services, a comprehensive communication solution for your business. MOTOTRBO: unIQuE MOTOTRBO™SySTEM BEnEfITS fOR EnhAncED pRODucTIvITy• I ntegrates voice and data into one device to increase your operational effi ciency and support integrated applications including MOTOTRBO Text Messaging Services. Also features an integrated GPS module for use with third-party location-tracking applications.• U ses Time-Division Multiple-Access (TDMA) digital technology to provide twice the calling capacity (as compared to analogue or FDMA radios) for the price of one frequency license. A second call doesn’t require a second repeater, saving you equipment costs.• In digital mode, provides clearer voice communications throughout the coverage area, as compared to analogue radios, rejecting static and noise.• O ffers enhanced battery life. MOTOTRBO digital two-way portable radios can operate up to 40 percent longer between recharges compared to typical analogue radios.• P rovides easy migration from analogue to digital with the ability to operate in both analogue and digital modes.• E nables additional functionality including dispatch data, enhanced call signaling, basic and enhanced privacy-scrambling and option board expandability.• F eatures the transmit interrupt suite - voice interrupt, remote voice dekey, emergency voice interrupt or data over voice interrupt - to help prioritise critical communication exactly when needed.5MOTOTRBO InTEgRATED DATA EnABlES ADvAncED ApplIcATIOnSOnE DEvIcE fOR vOIcE AnD DATAIn addition to voice, MOTOTRBO supports text messaging, GPS location tracking capability, and custom applications from Motorola’s Professional Radio Application Partner Programme such as telephony, dispatch, work order ticket solutions and much more. MOTOTRBO keeps your employees connected to the information they need to be more effi cient, with the convenience of one device.cOnvEnIEnT AnD DIScRETE MOTOTRBO TEXT MESSAgIngText messaging enables your employees to quickly and easily share information when voice communication isn’t practical. It is ideal in loud environments, for delivering messages that don’t need an immediate response, or when voice communication could be disrupting to guests, students, customers, or patients.MOTOTRBO text messaging communicates between radios, radios and dispatch systems, and even radios to any email capable device.TRAck vEhIclES AnD pEOplE WITh InTEgRATED gpSEvery MOTOTRBO radio has an integrated GPS module to use for tracking people outside your facility, vehicles or other remote assets operating in your coverage area. Unlike other GPS capable radios, MOTOTRBO’s module is integrated into the handset so there is no clumsy additional equipment to attach, carry or maintain.This enables you to better manage your mobile work force and quickly respond to incidents by locating the nearest employee and dispatching them to the scene. It also makes it easier to manage your fl eet so you can make deliveries and drive routes more effi ciently. For utility crews, taxi services, the hospitality industry, and countless other industries, the ability to see where your vehicles and employees are located with just a glance is invaluable. Your employees will be far more effi cient and your customer service can improve signifi cantly.cuSTOM DATA ApplIcATIOnS WITh MOTOROlA’S pROfESSIOnAl RADIOApplIcATIOn pARTnER pROgRAMMEMOTOTRBO which can accommodate custom data applications that adapt the radios to support your specifi c business tasks. You can, for example, work with third-party developers or your own IT staff to extend the functionality of MOTOTRBO using Motorola’s Professional Radio Application Partner Programme.With this development tool you can create unique applications such as a program to help you manage your work order tickets,to integrate your dispatch and billing systems, to link your MOTOTRBO radios to your telephone system, or to connect to email. MOTOTRBO is a powerful tool for communication with the fl exibility to adapt to your work force, your customers and your business.678ADDITIOnAl fEATuRES• A utomated battery back-up capability• Expanded coverage across multiple sites with IP Site Connect*• I ncreased voice and data capacity with Capacity Plus single-site trunking*• D ynamic mixed mode capability allows for automatic switching between analogue and digital mode• R epeater diagnostic and control software provides remote or local site monitoringMOTOTRBO ™ SySTEM cOMpOnEnTS AnD BEnEfITSREpEATER STAnDARD pAckAgE• Repeater • AC Power Cord• Two-year Standard Warranty12561 1.2 S3 I4O 5l both channel slots.6R ack- or wall-mountable, compatible with desktop housing as well.7Sturdy handles make installation and handling easier.*Digital mode only9vhf/uhfDR 3000MOTOTRBO REpEATER SpEcIfIcATIOnSSpecifi cations subject to change without notice. All specifi cations shown are typical. Repeater meets applicable regulatory requirements.Channel Capacity16Typical RF OutputLow Power UHF1 and VHFHigh Power UHF2 (450-512 MHz)High Power UHF2 (512-527 MHz)High Power UHF1High Power VHF 1-25 W 1-40 W 1-25 W 25-40 W 25-45 WFrequency136-174 MHz (VHF)403-470 MHz (UHF1)450-527 MHz (UHF2)Dimensions (HxWxL)132.6 x 482.6 x 296.5 mm Weight14 kgVoltage Requirements 100-240 V AC (13.6 V DC)Current Drain:Standby>0.2A (100 V AC)>0.1A (240 V AC)>1.5A (typical) (13.4 V DC)Transmit Low Power High Power>2.0A (100 VAC)>1.0A (240 VAC)>9.0A (typical) (13.4 VDC)>2.5A (100 V AC)>1.25A (240 V AC)>12.0A (typical) (13.4 V DC)Operating Temperature Range -30°C to +60°C Max Duty Cycle 100%Digital ProtocolETSI-TS 102 361-1, 2 & 3Frequency136-174 MHz (VHF)403-470 MHz (UHF1)450-527 MHz (UHF2)Channel Spacing 12.5 kHz / 20 kHz / 25 kHz Frequency Stability( -30° C, +60° C, +25° C) +/- 0.5 ppmAnalogue Sensitivity0.30 uV (12 dB SINAD)0.22 uV (typical) (12 dB SINAD)0.4 uV (20 dB SINAD)Digital Sensitivity 5% BER: 0.3 uV Intermodulation70 dBAdjacent Channel Selectivity ************70 dB @ 20/25 kHz Spurious Rejection70 dB Audio Distortion @ Rated Audio 3% (typical)Hum and Noise *************-45 dB @ 20/25 kHz Audio Response+1, -3 dB Conducted Spurious Emission-57 dBm < 1GHzTransmitterFrequency136-174 MHz (VHF)403-470 MHz (UHF1)450-527 MHz (UHF2)Channel Spacing 12.5 kHz / 20 kHz / 25 kHz Frequency Stability( -30° C, +60° C, +25° C)+/- 0.5 ppmPower OutputLow Power UHF1 and VHFHigh Power UHF2 (450-512 MHz)High Power UHF2 (512-527 MHz) High Power UHF1High Power VHF 1-25 W 1-40 W 1-25 W 25-40 W 25-45 WModulation Limiting+/***************+/- 4 kHz @ 20 kHz +/- 5.0 kHz @ 25 kHz FM Hum and Noise*************-45 dB @ 20/25 kHz Conducted / Radiated Emission -36 dBm < 1 GHz -30 dBm > 1 GHz Adjacent Channel Power *************-70 dB @ 20/25 kHz Audio Response +1, -3 dB Audio Distortion 3%Digital Vocoder TypeAMBE+210ADDITIOnAl fEATuRES• C onvenient access to station ports, shortening installation and maintenance time• 12.5 or 25 kHz programmable channel spacing • 6.25e Compliant• I ntegrated 100W Power Amplifier and AC/DC Power Supply minimises cabling, rack space, expense, and overall complexity • Software based design simplifies feature upgrades • Power supply functions over a wide range of voltages• S upports MOTOTRBO Capacity Plus single site trunking without a separate hardware controller*• Expanded coverage across multiple sites with IP Site Connect*• R epeater diagnostic and control software provides remote or local site monitoring• Automated battery back up (charger sold separately)• Restriction of Hazardous Substances (RoHS) compliantMOTOTRBO ™ SySTEM cOMpOnEnTS AnD BEnEfITSBASE STATIOn / REpEATER STAnDARD pAckAgE• MTR3000 Base Station / Repeater • AC Power Cord• MOTOTRBO Repeater Installation Guide • Two-year Standard Warranty379854/ REpEATER1 12 345 lEDs clearly indicate transmit and receive modes and overall station status 6 Rack-or-cabinet mountable7 front access speaker port for serviceability ease 8 front access microphone port for routine service 9Standard uSB port for station configuration*Digital mode onlyMTR3000 BASE STATIOn / REpEATER SpEcIfIcATIOnSSpecifications subject to change without notice. All specifications shown are typical.Repeater meets applicable regulatory requirements.11MOTOROLA and the Stylised M Logo are registered in the U.S. Patent and Trademark Office. All other product or service names are the property of their registered owners. © Motorola, Inc. 2010Repeater-BROCH_UK (04/10)Motorola, Ltd. Jays Close, Viables Industrial Estate,Basingstoke, Hampshire, RG22 4PD, UK/mototrboFor more information please contact your local Motorola Authorised Dealer or DistributorSuBScRIBER REpAIRManaging the in-house repair and maintenance of your subscriber radios takes a dedicated staff of technicians, as well as anongoing investment in diagnostic equipment, repair tools, and the technical training to keep up to speed on the latest technology. Motorola has made that investment and can help you easily and cost effectively keep your radios in top operating condition to ensure optimal efficiency and productivity.Our subscriber repair service offering allows you to budget for your repairs, preventing unexpected service and maintenance costs. Extended Care Option repairs receive priority service and meet committed cycle times from our European Radio Service Centre.• Extended care Option (EcO):Extended Care Option is a post-warranty service offering that extends the service coverage of Motorola portable or mobile subscriber radios. ECO can be purchased as an option to new radio purchases and is available to extend service coverage for up to five years.• EcO Service Benefits:With our proven repair capability, you can be sure your equipment is expertly repaired and back in your end users’ hands quickly. Using the latest tools and with strict adherence to Motorola engineering procedures, our European Radio Support Center’s expert technicians diagnose and repair units to original manufacturing specifications. With the Extended Care Option, you receive:- Fast and committed turnaround times - Predictable budgets - Cost effective repairs - Peace of mindMOTOTRBO ™ SERvIcE OffERIngS。
GSM双频GPRS手机进网(CTA)介绍
二、送样 充电器必须是通过 CCC 和泰尔认证的充电器！
1、受理中心 准备 12 台样机 其中 6 台分给泰尔或者威尔克，6 台分给 TMC。这 12 台机器是由受理中心来分配，
所以要保证这 12 台性能和外观完全一致，做预测试也要做得比较完整。不可以少零件 少标签。 资料准备：
a) 移动电话送检表 （盖章） b) 设备描述（盖章） c) 如果是双卡机需要声明是双卡单待还是双卡双待机（三份盖章）
备技术要求：移动台》 YD/T 968-2002 《电信终端设备电磁兼容性限值及测量方法》 YD/T1032-2000《900/1800MHz TDMA 数字蜂窝移动通信系统电磁兼容性限值和测量方法
第一部份：移动台及其辅助设备》 GB 4943-2001 《信息技术设备的安全》
北京邮电大学《计算机网络》2 课后题
整理课件
计算机学院：王小茹
2-24 调制解调器的速率
• 一个使用DMT的ADSL系统将3/4可用数据信道分配了下 行链路。它在每个通道上都使用QAM-64调制。那么下 行链路的容量是多少？
• 解答如下：
✓ 总共有256个通道，除去6个用于POTS的通道，再除去用于控 制的2个信道，剩下248个用于数据。如果通道中3/4用于下行， 那么有186个用于下行。ADSL调制在4000波特上进行，因此使 用QAM-64(每波特6位），186个通道中的每一个都是24000bps, 因此下行带宽=4.464Mbps。
计算机学院：王小茹
2-28 速率换算
• 比较以下两种情况下一个无噪声4kHz信道的最大信息传输速率：
1) 使用每次采样产生2bit的模拟信号编码； 2) 使用T1 PCM系统。
• 解题思路
✓ 在两种情况下，根据乃奎斯特定理，采用速率为每秒8000次； ✓ 每秒采样产生2bit的模拟信号情况下，每次采样发送2bit信息，则
• 解答思路：
✓ 四个坐标点，表示每个码元可携带2个bit，因此信息传输 速率＝2倍的码元传输速率=1200×2＝2400bps。
整理课件
计算机学院：王小茹
调制解调器的星座图
• 一个全双工QAM-64的调制解调器使用多少个频率？
• 解答如下：
✓ 两个。一个用于上行，一个用于下行。调制机制本身仅使 用振幅和相位，频率没有被调制。
A
S
B
整理课件
计算机学院：王小茹
附加题：理解线路传输 的时间安排和计算方法• 解题原理：• 源自t=0开始发送分组，然后依次计算。
整理课件
计算机学院：王小茹
• 作为单个分组发送 • 每条链路的发送延迟：10000/10Mbit/s＝1000us， 总的时间＝2＊1000＋2＊20＋35＝2075us
CommScope 14-port多频段天线产品说明书
14-port, 1.8m, multiband antenna, RF port assignments are as follows: R1= 694–862, R2 = 880–960, G1 = 1427-1518, B1 & B2 = 1695–2180 andY1 & Y2 = 2490-2690 MHz, 65° HPBW, 6x RET with manual override. Y1& Y2 share a common RETElectrical tilt settings applicable to RF Ports R1, R2, G1, B1 & B2 can be set independently (SeeArray Layout and RET Table below)A common electrical tilt setting is shared by RF Ports Y1 & Y2All Internal RET actuators are connected in “Cascaded SRET” configurationRetractable tilt indicator rodsOBSOLETEThis product was discontinued on: March 31, 2021General SpecificationsAntenna Type SectorBand MultibandGrounding Type RF connector inner conductor and body grounded to reflector andmounting bracketPerformance Note Outdoor usageRadome Material Fiberglass, UV resistantReflector Material AluminumRF Connector Interface 4.3-10 FemaleRF Connector Location BottomRF Connector Quantity, high band10RF Connector Quantity, low band4RF Connector Quantity, total14Remote Electrical Tilt (RET) InformationRET Hardware CommRET v2RET Interface8-pin DIN Female | 8-pin DIN MaleRET Interface, quantity 1 female | 1 maleInput Voltage10–30 Vdc1 W15Page ofPage of 25Power Consumption, idle state, maximum 1 W Power Consumption, normal conditions, maximum 8 WProtocol3GPP/AISG 2.0 (Single RET)DimensionsWidth 350 mm | 13.78 in Depth 208 mm | 8.189 in Length1828 mm | 71.969 in Net Weight, without mounting kit33 kg | 72.752 lbArray LayoutPort ConfigurationElectrical SpecificationsImpedance50 ohmOperating Frequency Band1427 – 1518 MHz | 1695 – 2180 MHz | 2490 – 2690 MHz | 694 –862 MHz | 880 – 960 MHzPolarization±45°Total Input Power, maximum800 W @ 50 °CElectrical SpecificationsR1R2G1B1B2Y1Y2Frequency Band, MHz694–862880–9601427–15181695–21801695–21802490–26902490–2690Gain, dBi1515.216.217.817.417.917.467636562616062Beamwidth, Horizontal,degreesBeamwidth, Vertical, degrees11.89.9 6.9 5.2 5.2 4.2 4.1Beam Tilt, degrees2–142–142–122–122–122–122–12USLS (First Lobe), dB1517171715191931333231353334Front-to-Back Ratio at 180°,dBIsolation, Cross Polarization,28282828282828dB3030303030303035Page ofIsolation, Inter-band, dB30303030303030VSWR | Return loss, dB 1.5 | 14.0 1.5 | 14.0 1.5 | 14.0 1.5 | 14.0 1.5 | 14.0 1.5 | 14.0 1.5 | 14.0 PIM, 3rd Order, 2 x 20 W, dBc-150-150-150-150-150-150-150Input Power per Port,maximum, watts350350300300300250250 Electrical Specifications, BASTAFrequency Band, MHz694–862880–9601427–15181695–21801695–21802490–26902490–2690 Gain by all Beam Tilts,average, dBi14.7151617.516.917.717.1Gain by all Beam TiltsTolerance, dB±0.4±0.4±0.4±0.7±0.7±0.4±0.5Gain by Beam Tilt, average, dBi 2 ° | 14.88 ° | 14.714 ° | 14.62 ° | 15.18 ° | 15.114 ° | 14.92 ° | 15.87 ° | 16.112 ° | 16.02 ° | 17.37 ° | 17.612 ° | 17.42 ° | 16.87 ° | 17.012 ° | 16.82 ° | 17.67 ° | 17.812 ° | 17.22 ° | 17.27 ° | 17.312 ° | 16.7Beamwidth, HorizontalTolerance, degrees±1.9±2.3±6.3±3.2±3.2±3.8±5.6Beamwidth, VerticalTolerance, degrees±1.2±0.4±0.3±0.5±0.6±0.2±0.2USLS, beampeak to 20° abovebeampeak, dB15171716141616Front-to-Back Total Power at180° ± 30°, dB25232526292728CPR at Boresight, dB20231520231820CPR at Sector, dB111079895Mechanical SpecificationsWind Loading @ Velocity, frontal301.0 N @ 150 km/h (67.7 lbf @ 150 km/h)Wind Loading @ Velocity, lateral254.0 N @ 150 km/h (57.1 lbf @ 150 km/h)Wind Loading @ Velocity, maximum638.0 N @ 150 km/h (143.4 lbf @ 150 km/h)Wind Loading @ Velocity, rear319.0 N @ 150 km/h (71.7 lbf @ 150 km/h)Wind Speed, maximum241 km/h (150 mph)Packaging and WeightsWidth, packed456 mm | 17.953 inDepth, packed357 mm | 14.055 inLength, packed1975 mm | 77.756 inWeight, gross46.5 kg | 102.515 lbPage of45Regulatory Compliance/CertificationsAgency ClassificationCE Compliant with the relevant CE product directives ISO 9001:2015Designed, manufactured and/or distributed under this quality management systemIncluded ProductsBSAMNT-3–Wide Profile Antenna Downtilt Mounting Kit for 2.4 - 4.5 in (60 - 115 mm) OD round members.Kit contains one scissor top bracket set and one bottom bracket set.SMALL-CAPKIT–Female End Cap Assembly for 4.3-10 series and 4.1-9.5 Din, work torque 5-8N/M.* FootnotesPerformance Note Severe environmental conditions may degrade optimum performancePage of55。
HP E6392A GSM 手机测试装置用户手册说明书
HP E6392A GSM MS Test Set SpecificationsRF Signal GeneratorFrequency Range:935 MHz to 960 MHz (GSM downlink)925 MHz to 960 MHz (E-GSM downlink)1805 MHz to 1880 MHz (DCS1800 downlink)Frequency Resolution: 200 kHz, at channel frequency Frequency Accuracy: Same as reference Output Level Range: −110 dBm to −50 dBm Output Level Accuracy: ±1.0 dB Modulation: 0.3 GMSK Phase Error: <5° rms typical Peak Phase Error: <15° peak typicalRF AnalyzerFrequency Range:890 MHz to 915 MHz (GSM uplink)880 MHz to 915 MHz (E-GSM uplink)1710 MHz to 1785 MHz (DCS1800 uplink)Transmitter Carrier Peak Power MeasurementRange: −20 dBm to +39 dBm (0.3 GMSK at burst/continuous or CW)Accuracy:±1.0 dB (±0.6 dB typical at 25 °C ±5 °C) at ≥0 dBm ±2.0 dB (±1.6 dB typical at 25 °C ±5 °C) at <0 dBm Resolution: 0.2 dBSpecifications describe the test set’s warranted performance and are valid over the entire operation and environmentalranges unless otherwise noted. All specifications are valid after a 30-minute warm up period of continuous operation, and within the frequency ranges defined below.Supplemental characteristics are intended to provide addi-tional information useful in applying the instrument by giving typical, but non-warranted performance parameters.These characteristics are shown in Italics and labeled as “nominal”, “typical”, or “supplemental.”Power Ramp MeasurementRange: −11 dBm to +39 dBm (0.3 GMSK at burst)Accuracy:±0.6 dB typical at 25 °C ±5 °C at ≥0 dBm ±1.6 dB typical at 25 °C ±5 °C at <0 dBm Resolution: 0.2 dBDynamic Range: ≥40 dB typicalPhase and Frequency Error MeasurementInput Level Range: −11 dBm to +39 dBmInput Phase Error Range: 0 to 20° (0.3 GMSK at burst)Phase Error Measurement Accuracy:≤1.5° rms at phase error ≥2.5°≤6.0° peak at phase error ≥2.5°Frequency Error Measurement Range: ±9 kHz (0.3 GMSK at burst/continuous or CW)Frequency Error Measurement Accuracy (average of 10 measurements):±(10 Hz + frequency reference accuracy) at GSM/EGSM ±(25 Hz + frequency reference accuracy) at DCS1800DC Power SupplyRange: 3 Vdc to 9 Vdc Resolution: 0.1 VAccuracy: 0.1 V at 100 mA load Maximum Current: 1 A, peak 2 A Ripple Noise: 100 mV p-p typicalDC Current MeasurementRange: 3 mA to 1000 mA Accuracy: ±(3 mA +2%)Memory CardType: PCMCIA (U.S.)Memory Size: SRAM 512 KBRF Input/OutputMaximum Safe Reverse Power (peak): +41 dBm (12.6 W; CW; supple me ntal characte ristic)Impedan ce: 50 Ω nominal SWR: ≤1.5:1Connector: N-type, femaleRear PanelPrinter InterfaceInterface: Centronics Connector: D-Sub 25-pin femaleSerial InterfaceInterface: EIA RS-232C Baud Rate: 9600Connector: D-Sub 9-pin maleFrequency ReferenceFrequency: 13 MHz Aging: ±0.1 ppm/yearTemperature Stability: ±0.1 ppm (20 °C to 30 °C)Reference Input: 13 MHz, 0 to +10 dBm typical,50 Ω nominalReference Output: 13 MHz, >+3 dBm typical,50 Ω nominalAsynchronous Test (Option 002)In-Band Spectrum Measurement (Option 002)Frequency Range:890 MHz to 915 MHz (GSM uplink)880 MHz to 915 MHz (E-GSM uplink)1710 MHz to 1785 MHz (DCS1800 uplink)Input Level Range:Range 1: −1 dBm to +39 dBm Range 2: −11 dBm to +29 dBmFrequency Span (from channel frequency): 0 Hz to +400 kHz or ±100 kHzAmplitude Accuracy: ±2.0 dB typical Amplitude Resolution : 0.4 dB typicalDynamic Range: ≥40 dB typical at input ≥0 dBmRF Signal Generator (Option 002)Frequency Range:935 MHz to 960 MHz (GSM downlink)925 MHz to 960 MHz (E-GSM downlink)1805 MHz to 1880 MHz (DCS1800 downlink)Frequency Resolution: 200 kHz at channel frequencyFrequency Accuracy: Same as frequency reference Output Level Range: –110 dBm to –50 dBm Output Level Accuracy: ±1.0 dB0.3 GMSK Modulation: PN9 (with training sequence), all 0, Off (CW sinewave)Phase Error: <5° rms typical Peak Phase Error: <15° peak typicalGeneral SpecificationsSize: 350 mm (W) ´ 150 mm (H) ´ 350 mm (D)Weight: 10 kgPower Voltage: 88 V to 264 VPower Frequency: 47 Hz to 63 HzPower Consumption:≤135 VAOperating Temperature: 0 °C to +40 °CStorage Temperature:−20 °C to +60 °CWarranty InformationThis Hewlett-Packard instrument product is warranted against defects in material and workmanship for a period of one year from date of shipment. During the warranty period, Hewlett-Packard Company will at its option, either repair or replace products which prove to be defective.For warranty service or repair, this product must be returned to a service facility designated by HP. Buyer shall prepay shipping charges to HP and HP shall pay shipping charges, duties, and taxes for products returned to HP from another country.HP warrants that its software and firmware designated by HP for use with an instrument will execute its programming instructions when properly installed on that instrument. HP does not warrant that the operation of the instrument, or software, or firmware will be uninterrupted or error free.Limitation Of WarrantyThe foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by buyer, buyer-supplied software or interfacing, unauthorized modification or misuse, operation outside of the environmen-tal specifications for the product, or improper site preparation or maintenance. No other warranty is expressed or implied. Hewlett-Packard specifically disclaims the implied warranties of merchantability and fitness for a particular purpose.For more information about Hewlett-Packard test and measurement products, applications, services, and a current sales office listing, visit our web site at: /go/tmdirYou can also contact one of the following centers and ask for a test and measurement sales representative. United States:Hewlett-Packard CompanyTest and Measurement Call CenterP.O. Box 4026Englewood, CO 80155-4026(tel)180****4844Canada:Hewlett-Packard Canada Ltd.5150 Spectrum WayMississauga, OntarioL4W 5G1(tel) (905) 206 4725Europe:Hewlett-Packard CompanyEuropean Marketing OrganisationP.O. 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《高频电子线路》(周选昌)习题解答完整答案
1-6 并联谐振回路如图 P1-6 所示。已知回路电容 C = 10 PF ，电源内阻 RS = 6 KΩ ，回路 空载谐振电阻 R P = 20 KΩ ，回路有载时的通频带 BW0 .7 = 6 MHz ，试求接入的负载电阻 RL。
《高频电子线路》习题解答(周选昌)
5
Is
Rs C R0
P
L
RL
图 P1-6
BW0.7 =
f 0 10 × 10 6 = = 152.44 KHz Q0 65.6
若希望回路的通频带宽展宽一倍，则要求品质因素 Q 降低一倍，即谐振电阻减少一倍，则 应在回路两端并一个与谐振电阻 RP 一样的电阻，即 R L = R P = 18.65 KΩ 。
《高频电子线路》习题解答(周选昌)
I S (ω )
L C Rp RL
.
解：并联谐振回路如图所示：
S =
1 ∆f 1+ 2Q0 f 0
2
→ Q0 =
f0 2∆f 0
1 − 1 = 65.6 S2
f0 =
1 2π LC
→L=
(2πf 0 )
1
2
C
= 4.523µH
RP = ρQ0 =
Q0 = 18.65 KΩ ω0C
率为 f 0 = 465 KHz ，试求： 串联谐振回路的总电感 L0 和总电容 C0 串联谐振回路的总谐振电阻 r0 串联谐振回路的品质因数 Qe
B L Rc A
C
图 P1-1
A
rL
rc
Rc
Cc
解： 在 L 与 rL 组成的支路中有：
C
rL =
r
Q0
=
2πf 0 L = 17.1Ω Q0
SIGLENT SDG7000A 系列双通道任意波形发生器数据手册说明书
数据手册CN01B产品综述SDG7000A 系列双通道任意波形发生器，最大带宽1 GHz，具备5 GSa/s数-模采样率和14-bit 垂直分辨率，能够产生最高2.5 GSa/s采样率的逐点任意波和最大500 MSymbol/s的矢量信号，同时还具备连续波、脉冲信号、噪声、PRBS码型和16-bit数字总线等多种信号生成的能力，并提供调制、扫频、脉冲串和双通道复制、相加、互相调制等复杂信号的生成能力，是一款高端多功能波形发生器。
其输出支持差分/单端切换，最大可提供±24 V的输出范围，并且在高频输出下仍然能保证较大的幅度，可在一定应用范围内节省外接功放，满足更广泛的需求。
特性与优点⏹双通道差分/单端模拟输出，16-bit LVDS/LVTTL数字总线输出⏹ 5 GSa/s数-模转换器采样率，14-bit垂直分辨率⏹最高输出频率1 GHz⏹可输出0.01 Sa/s ~ 2.5 GSa/s采样率的逐点任意波，最大存储深度512 Mpts，提供分段编辑和播放的功能⏹可输出最高500 MSymbol/s符号率的矢量信号⏹可输出最小脉宽1 ns，最小沿500 ps的低抖动脉冲，上升/下降沿独立精细可调，脉宽精细可调⏹可输出1 mHz ~ 1 GHz带宽的高斯噪声⏹可输出最高312.5 Mbps的PRBS码型⏹数字总线可输出最高1 Gbps的数字信号⏹提供多种模拟/数字调制，提供扫频和脉冲串功能⏹增强的双通道操作功能：通道间跟踪、耦合和复制功能；双通道叠加功能；支持通道间互为调制源⏹24 Vpp模拟输出能力叠加±12 V直流偏置，最大可提供±24V（48 V）的输出范围⏹硬件频率计功能⏹5英寸电容式触摸显示屏，分辨率800x480；支持外接鼠标和键盘操作；内建的WebServer 支持通过网页控制仪器⏹丰富的接口：USB Host、USB Device (USBTMC)、LAN（VXI-11/Telnet/Socket）、外调制/频率计输入、参考时钟输入、参考时钟输出、Marker输出、Trigger In/Out等⏹支持SCPI 远程控制命令，良好适配各种自动化集成测试系统SDG7000A任意波形发生器数据手册型号和主要参数SDG7000A任意波形发生器数据手册设计特色多功能信号发生器SDG7000A是一款集多种信号发生器功能于一体的产品。
无线传感器网络2014(概述)
（3）无中心。无线传感器网络中没有严格的控制中心，所 有结点地位平等，是一个对等式网络。结点可以随时加入 或离开网络，任何结点的故障不会影响整个网络的运行， 具有很强的抗毁性。 （4）自组织。网络的布设和展开无需依赖于任何预设的网 络设施，节点通过分层协议和分布式算法协调各自的行为， 节点开机后就可以快速、自动地组成一个独立的网络。
什么是Ad hoc网络？
Ad hoc： 这是一个拉丁短语，意思是特别的、临时的、机动的。
用几个字来形容其特性就是无中心，自组织，对等，多跳 路由，动态拓扑。 无中心：Ad hoc没有一个中心，所有接入的节点在网络中 都是对等的，任何节点可以自由的加入和离开网络，任何 一个节点的故障都不会影响这个网络的正常运行。 自组织：网络的布设或展开无需依赖于任何预设的网络设 施，只要有两个和两个以上支持Ad hoc的节点就可以自行 的建立无线连接。节点通过分层协议和分布式算法协调各 自的行为，结点开机后就可以快速、自动地组成一个独立 的网络。
20
15
功率 /mW
10
5
0
传感器
处理器
发送
接收
空闲
通信
睡眠
2、通信能力受限
通常无线通信的能量消耗与通信距离的关系符合如下规律：
其中参数n满足关系2<n<4。n的取值与很多因素有关，例如传 感器节点部署贴近地面时，障碍物多、干扰大，n的取值就大；天 线质量对信号发射质量的影响也很大。通常取n为3，即假定通信能 耗与距离的三次方成正比。 随着通信距离的增加，能耗会急剧增加。在满足通信连通性的 前提下应尽量减少单跳的通信距离。一般而言，传感器节点的无线 通信半径在100m以内比较合适。