FM5820-A80U中文资料

DKW-8Usingle Channel uHFwireless systemContentsIntroduction (2)Using this Manual (2)System Features (3)DKW-8U Receiver (4)HT-8U Handheld Mic Transmitter (6)BT-8U Bodypack Transmitter (7)Specifications (10)Warranty (11)Service Information (12)IntroductionThank you for choosing the Nady DKW-8U wireless system, we know you will be very pleased with its performance and features. The Nady DKW-8U is the perfect entry-level professional wireless, and delivers clear, transparent audio for a variety of singing and speech and wireless instrument applications. The DKW-8U is loaded with top professional performance and is the best price value available in UHF wireless systems.Using This ManualThis booklet provides information regarding the use of the DKW-8U wireless systemand includes a description of features and a step-by-step guide to operation of the unit. This manual should answer any questions you may have about the operation and servicing of your DKW-8U.2System FeaturesDKw-8u receiverUnprecedented value in a single-channel •UHF wireless mic/instrument system with interference-free operation in any application or locale on select UHF frequencies on separate bands,902-928MHz and 944-952MHz Compact, simple set up to operate— •simply plug in instead of your wired microphones or instrument cableAll the advantages and freedom•of wireless operation without cumbersome cordsExcellent high fidelity audio—perfect •for public speaking, karaoke/recreational singers, guitarists, DJ’s, and many other applicationsNady’s proprietary companding circuitry •for an industry best 120dB Dynamic Range, and the clearest, most natural sound available150+ feet typical operating range—•up to 300+ feet line-of-sightPOWER, SIGNAL, AF LED status•indicators, adjustable audio output level for optimal sound and 1⁄4” phone jack output for easy connection to sound system Externally powered by DC power•adapter (included)HT-8u HandheldMicrophone TransmitterFeatures the Nady DM -10D unidirectional •neodymium dynamic cartridge for optimum true sound, maximum feedback rejection and minimal handling noise OFF/STANDBY/ON switch allows•convenient audio muting while transmitter “ON”Status LED indicator flashes once for unit •“ON”; lights steady for low battery alert Two AA alkaline or NiMH battery operation •BT-8u Bodypack TransmitterChoice of instrument (GT)/headworn(HM)/•lavalier(LT) microphone operating modes in a single bodypack transmitterOFF/STANDBY/ON switch allows•convenient audio muting while transmitter “ON”Status LED indicator flashes once for unit •“ON”; lights steady for low battery alert Locking 3.5mm mini-jack provides secure •connection for removable microphone or instrument cableEasily accessible input level adjust•control for optimum sound (HM/LT operating modes only)Single 9V alkaline or NiMH•battery operation3DKW-8U Receiver1. receiver PlacementThis unit is designed for desktop useand can be placed on any flat surfacethat is secure. Do not place, however, on amplifiers or other equipment that can get hot in operation. This unit is not designed for rackmounting.2. Powering the receiverPlug the 14V/0.4a DC aDaPTer (1) provided into the DC In jack (2) on the back of the receiver. Then plug the power supply into an AC outlet. The POwer leD (3) will now light and the receiver is operational.3. antennaThe DKW-8U receiver is supplied with an attached FOlDInG anTenna (4). This should be extended fully to obtain maximum range. Optimal antenna position is 45 degrees from the receiver. For maximum range, itis always best to maintain a line of sight (no obstructions) between the receiverand the transmitter antenna at all times whenever possible.4. Mute (squelch)The DKW-8U has a preset mute (Squelch) internally for maximum range and performance. There is no need to adjust this. In normal operation, the sIGnal leD (5) should be lit when the transmitter is transmitted. However, when the signal LED extinguishes, the transmitter is out of range for that given location, and the user should move closer to the receiver to re-establish the radio link.5. Connecting the audio OutputThe DKW-8U receiver provides with an adjustable 1⁄4” line level auDIO OuT jack (6). (Note: As when making any connection, make sure the amplifier or mixing board volume is at the minimum level before plugging in the receiver to avoid possible sound system damage.)Microphone Connection(Using the HT-8U handheld microphoneor the BT-8U transmitter with eithera headworn or lavalier microphone transmitter)For microphone use, the 1/4” line level auDIO OuT can be used. Plug one end of a 1/4” audio cable into the auDIO OuT JaCK (6) located in the back of the receiver. Plug the other audio cable end to you mixing board input. Make sure the phantom power on your mixing board is turned off andthe volume in turned down when making the audio connections. Start the receiver VOluMe (7) at MINIMUM and adjust until the volume level is optimal.Instrument ConnectionTo use the 1/4” line level auDIO OuT JaCK (6) for instrument use, follow the instructions for the Microphone Connection (above), except start the receiver VOluMe (7) at1/2 MAX and adjust until the volume level is optimal.(Note: 1:1 with a directly connected cord from the instrument to the amp is with the volume about3/4 MAX, and MAX volume from the receiverwill be about 4dB higher than 1:1. If the volume control is set too high, you may overload your mixer or amp.)6. aF leD DisplayThe DKW-8U receiver is equipped with an aF leD DIsPlaY (8). The LED lights whenever an audio signal is being transmitted from the transmitter.(Note: The AF LED Display is not a peak level indicator so it can light continuously during audio signal input to the transmitter.)456HT-8U Handheld Mic Transmitter1. Release the BaTTerY COVer (9) by pressing the locking tab and slide down as per the arrow, exposing the BaTTerY HOlDer (10). Insert two fresh AA alkaline or NiMH batteries, observing the correct polarity as marked, and slide the battery cover back on to the microphone. Make sure the cover is closed completely. Fresh alkaline batteries can last up to 10 hours in use, but in order to ensure optimum performance, it is recommended that you replace the battery after every 6-8 hours of use. NiMH batteries should be replaced with fresh ones recharged fully (withseparate charger, not supplied, and as per its charging instructions) whenever low or dead battery status is indicated as per the following.2. Turn on the HT-8U by sliding the OFF/sTanDBY/On swITCH (11) to the STANDBY position first (transmitter on, audio muted) or the ON position (transmitter and audioboth on). The BaTTerY InDICaTOr leD (12) will give a single quick flash, indicating usable battery strength. In the case of a dead or low battery, the LED will either not go on at all or will stay on continuously, indicating that the batteries should be replaced with fresh ones. To preserve battery life, turn the transmitter off when not in use.3. The microphone is now ready to use. The sIGnal leD (5) on the DKW-8U receiver should now be lit, indicating a received signal from the transmitter. When ready to speak, slide the OFF/sTanDBY/On swITCH (11) to the ON position. Adjust the volume of the receiver as per the Connecting the Audio Output of the above DKW-8U receiver instructions.[Note: Observe care in selecting P .A. volume, transmitter location and speaker placement so that acoustic feedback (howling or screeching) will be avoided.]91112BackFront10BT-8U Bodypack Mic Transmitter1. Snap open the BaTTerY DOOr (13) and insert a fresh 9V alkaline or NiMH battery into the BaTTerY COMParTMenT (14) observing the correct polarity. Close the battery door to its original position and completely cover the battery. Fresh alkaline batteries can last up to 10 hours in use, but in order to ensure optimum performance, it is recommended that the battery be replaced after 6-8 hours of use. A NiMH battery should be replaced with another recharged fully (with separate charger,not supplied, and as per its charging instructions) whenever low or dead battery status is indicated as per the following.2. Selecting audio Input Operating Mode: The BT-8U is equipped with two InPuT seleCTOr swITCHes (15) located under the cover on the circuit board for selecting the type of audio input you will be supplying to the transmitter. Select from the choice of three positions: INSTRUMENT (for guitar, bass, etc.), HEADWORN MIC, and LAVALIER MIC (Condenser Microphones).(Note: Use only the input audio source as per the input selected with the internal AUDIO INPUT SELECTOR SWITCHES (15) or the audio willnot be optimal–a muddy or distorted soundmay result.)There are two switches with selectable positions GT, HM, LT together at the same time.To select inputs: (see chart on page 9)a. Instrument: Set both switches to GTB. Headworn Mic: Set both switches to HMC. lavalier Mic: Set both switches to LT3. Connecting for selected Input: The BT-8U is provided with a 3.5 mm lOCKInG JaCK (16) for connecting the audio input selected. Connect either the InsTruMenT COrD (17)or the HeaDwOrn MIC (18) or laValIer MIC COrD (19) as desired, according to the input selected. To secure the connection, turn the slip ring on the plug clock wise to thread it on the jack. To unplug, reverse the process. Slip the transmitter into a pocket or ClIP (20) it on to your clothes or instrument strap (if using the BT-8U as an instrument transmitter).4. Turn on the BT-8U by sliding the OFF/ sTanDBY/On swITCH (21) to the STANDBY position (transmitter on, audio muted) or the ON position (transmitter and audio both on). The BaTTerY InDICaTOr leD (22) will give a single quick flash, indicating usable battery strength. In the case of a dead or low battery, the LED either will not go onat all or will stay on continuously, indicating that the battery should be replaced with a fresh one. To conserve battery life, turn unit off when not in use.5. The BT-8U transmitter is now readyto use. The sIGnal leD (5) on the DKW-8U receiver should now be lit, indicatinga received signal from the transmitter. Adjust the volume of the receiver as per the Connecting the Audio Output of the above DKW-8U receiver instructions.6. Instrument use: Secure the connection from the GT CaBle (17) by turning theslip ring on the plug into the transmitter clockwise to thread it on the jack. To unplug, reverse the process. Plug the 1/4” phone plug into the instrument. When ready to play, slide the audio OFF/sTanDBY/ On swITCH (21) to either “STANDBY or ON” position. Adjust the volume of the receiver as per the Connecting the Audio Output of the above DKW-8U receiver instructions. (Note: The INPUT LEVEL CONTROL (23) is deactivated and not used when the BT-8U is in INSTRUMENT (GT) mode. Levels should be adjusted with the volume control of your instrument.)7(Note: Scratchy noises can sometimes occur when some electric guitars with dirty pots or connections are used with any wireless system. Therefore, the supplied INSTRUMENT CORD (17) has a factory-installed capacitor inside the 1/4” plug. This capacitor provides first order filteringof the RF signal from the cord into the guitar and eliminates virtually all scratchy noises. Should your equipment still give you scratchy noises, we suggest these steps to eliminate them:1) Make sure all guitar volume and tone pots are clean and all contacts are solid–this is very important.2) A 47pf capacitor soldered across the hot to ground terminals of the guitar’s volume and tone pots will provide extra filtering.) 7. Microphone use (with either a lavalieror headworn microphone): Secure the connection from the laValIer (18) or HeaDwOrn MIC COrD (19) by turning the slip ring on the plug into the transmitter clockwise to thread it on to the jack. To unplug, reverse the process. To use the lavalier mic, attach it at chest level. Do not place it too close to the mouth–a distance of about six inches usually works best.To use the headworn mic, place it on the head and adjust the boom so that the mic is about one inch to the side of the front of the mouth. When ready to speak, slide the OFF/sTanDBY/On swITCH (21) to the either “STANDBY or ON” position.Adjust the volume of the receiver as per the Connecting the Audio Output above DKW-8U receiver instruction.[Note: Observe care in selecting P.A. volume, transmitter location and speaker placement so that acoustic feedback (howling and screeching) will be avoided. Please also note the pickup pattern characteristics of the microphone selected. Omnidirectional mics pick up sound equally from all directions, and are prone to feedback if not used carefully. Unidirectional mics are more resistant to feedback, but pick up sound sources best that are directly in front of the mic. Also, mics that are farther from the sound source, such as lavalieres, require more acoustic gain and thus are also more prone to feedback than close-source mics such as handheld or headworn models that are used close to the mouth].8. For optimum performance, an InPuT leVel COnTrOl (23) is provided. Adjust the gain by turning the control with a small screw driver. For lavalier mic use, it is recommended that the level be set at about 1/2 maximum. For headworn mic use, it may be advisable to turn the gain down somewhat, depending on the volume levels expected. In either application, experiment and set for maximum possible gain without audible distortion on the high level peaks. (Note: Turning down the gain too much can compromise the signal-to-noise and it is not recommended.)9. The DKW-8U receiver is equippedwith an aF leD DIsPlaY (8). The LEDlights whenever an audio signal is being transmitted from the transmitter.(Note: The AF LED Display is not a peak level indicator so it can light continuously duringaudio signal input to the transmitter.)891517181920131421222324SpecificationsDKw-8u OVerall sYsTeM PerFOrManCeFrequency response50 Hz - 16 KHz, - 3 dBDynamic range120 dBTotal Harmonic Distortion<1%rF Carrier Frequency range UHF, choice of single frequencies on separate bands,902-928MHz and 944-952MHzFrequency stability+/- 0.005%, crystal controlledModulation FM +/-20KHz normalOperating range Up to 250 ft. typical (depending on site conditions);up to 500+ feet optimum line-of-sightreCeIVerreception Mode Mono antenna receptionsquelch FixedControls Volume ControlConnectors DC In: (2.1mm barrel), Unbalanced Out :1/4” (6.3mm) jackleD Indicators Power ON, Signal, AF LEDsunwanted signal rejection 60dB image and spuriousPower requirements DC 14V @ 400 mA, DC adapter includedDimensions (Max.) 6.88” x 4.0” x 1.5” (17.5 x 10.2 x 3.8 cm)weight7.6 oz (0.22 kg)antenna4” (9.5 cm), Single section telescopicTransMITTersaudio InputsBT-8u Bodypack 3.5mm locking mini-jack, internally switchable inputs:instrument, headworn mic, or lavalier micHT-8u Handheld Integral Nady DM-10D neodymium dynamic cartridgeControlsBT-8u ON/STANDBY/OFF, INPUT LEVEL CONTROL,internal GT/HM/LT switchesHT-8u ON/STANDBY/OFFrF Power Out20mW normal (50mW Maximum allowed by FCC)Harmonic and spurs< -50 dBantennas HT-8u/BT-8u Internal antennasIndicators HT-8u/BT-8u Single LED, flash once “ON”, LOW BAT “Steady ON”BatteryHT-8u2xAA Alkaline or NiMH batteriesBT-8u Single 9V Alkaline or NiMH batteryBattery life8-10 Hours (Alkaline)DimensionsBT-8u Bodypack 4.25” x 2.5”x 1.0” (10.8 cm x 6.4 cm x 2.5 cm)HT-8u Handheld10.5”x 1.875” (26.7 cm x 4.8 cm)weightBT-8u Bodypack 3.1 oz (88 g) without batteryHT-8u Handheld7.5 oz (213 g) without batterySpecifications subject to change at any time without prior notice for purposes of product improvement10One Year Limited WarrantyNady Systems, Inc. warrants to the original consumer purchaser (U.S.A. only) that the unit is free from any defects in material or workmanship for a period of one year from the date of original retail purchase. If any such defect is discovered within the warranty period, Nady Systems, Inc. will repair or replace the unit free of charge, subject to verification of the defect or malfunction upon return to Nady Systems. Please do not return your Nady product to the store where it was purchased as Nady Systems handles your warranty service directly. Communication with our Service Department is the most efficient means of servicing your unit and we are dedicated to keeping you a satisfied customer.To the extent permitted by law, any applicable implied warranties, including warranties of merchantability and fitness are hereby limited to one year from the date of purchase. Consequential or incidental damages resulting from a breach of any applicable express or implied warranties are hereby excluded. This warranty is in lieu of all other agreements and warranties, general or special, express or implied and no representative or person including a Nady dealer, agent, or employee is authorized to assumefor us any other liability in connection with the sale or use of this Nady Systems’ product.Whereas some states do not allow limitations on how long implied warranties last, and do not allow exclusion of incidental or consequential damages, the above limitations and exclusions may not applyto you. This warranty gives you specific legal rights and you may also have other rights which may vary from state to state.This warranty is subject to the following conditions:1) This system must have been purchased from an authorized Nady dealer and all warrantyservice must be performed by Nady’s service department. Any service not performed by Nadywill automatically void this warranty.2) Items not covered: physical damage resulting from improper handling of the unit in transit from the factory by the shipper (Nady Systems is not responsible for such damage and all such claims must be made against the shipping company by the consignee); defects caused by normal wear of the product (expendable parts are typically connectors, cables, potentiometers, switches and similar components); damage or defects caused by abuse, neglect, accident, failure to connect or operate the unit in any way that does not comply with applicable technical or safety regulations, or improper repair, excessive heator humidity, alteration or unreasonable use of the unit, causing cracks, broken cases/housings or parts; damage caused by leaking batteries; finish or appearance items; items damaged in shipment en route to Nady Systems, Inc. for repair. The warranty is null and void if any Nady serial number has been removed or defaced.How To Obtain service:1) If factory service is required, please contact our Service Department at (510) 652-2411 for a return authorization (R/A) number. Make sure the R/A number is clearly marked on the outside of your package. (Please note: if an R/A number is not included, our Shipping Department cannot accept your package.) 2) Send the unit back to Nady Systems, 6701 Shellmound Street, Emeryville, CA, 94608, freight pre-paid. You must include proof of date and place of purchase (i.e., photocopy of your bill of sale) or Nady cannot be responsible for repair or replacement. Nady Systems, Inc. will not repair, nor be held responsible,for any units returned without proper identification, return address, and R/A number clearly markedon the package.3) Per the above, Nady will perform all warranty service and return the unit to you at no charge.Nady Systems will inform the buyer if product sent in does not meet the terms of this warrantyand will provide a quote for fixing the unit and/or shipping it back exclusively at the buyer’s expense.116701 Shellmound Street | Emeryville, CA USA 94608T 510.652.2411 | F 510.652.5075 | Service InformationIn the u.s. If you are experiencing operational problems with your system, please refer to the Support page at for assistance. Should your wireless system require service, please contact the Nady Service Department at (510) 652-2411 to obtain a Return Authorization (R/A) Number and service quote (if out of warranty). Make sure the R/A Number is clearly marked on the outside of the package that you are returning.If your unit is out of warranty, please enclose a cashier’s check or money order (or pay by credit card) per instructions by the Nady Service Department. Ship your unit prepaid to: Nady Systems, Service Department, 6701 Shellmound Street, Emeryville, CA 94608. Include a brief description of the problem you are experiencing. For service of a unit under warranty, please follow the instructions in the following section.Outside the u.s. For service or warranty matters please contact the Nady distributor in your country through the dealer/store from which you purchased this product.。

General DescriptionThe MAX13080E–MAX13089E +5.0V, ±15kV ESD-protect-ed, RS-485/RS-422 transceivers feature one driver and one receiver. These devices include fail-safe circuitry,guaranteeing a logic-high receiver output when receiver inputs are open or shorted. The receiver outputs a logic-high if all transmitters on a terminated bus are disabled (high impedance). The MAX13080E–MAX13089E include a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion.The MAX13080E/MAX13081E/MAX13082E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. The MAX13083E/MAX13084E/MAX13085E also feature slew-rate-limited drivers but allow transmit speeds up to 500kbps. The MAX13086E/MAX13087E/MAX13088E driver slew rates are not limited, making transmit speeds up to 16Mbps possible. The MAX13089E slew rate is pin selectable for 250kbps,500kbps, and 16Mbps.The MAX13082E/MAX13085E/MAX13088E are intended for half-duplex communications, and the MAX13080E/MAX13081E/MAX13083E/MAX13084E/MAX13086E/MAX13087E are intended for full-duplex communica-tions. The MAX13089E is selectable for half-duplex or full-duplex operation. It also features independently programmable receiver and transmitter output phase through separate pins.The MAX13080E–MAX13089E transceivers draw 1.2mA of supply current when unloaded or when fully loaded with the drivers disabled. All devices have a 1/8-unit load receiver input impedance, allowing up to 256transceivers on the bus.The MAX13080E/MAX13083E/MAX13086E/MAX13089E are available in 14-pin PDIP and 14-pin SO packages.The MAX13081E/MAX13082E/MAX13084E/MAX13085E/MAX13087E/MAX13088E are available in 8-pin PDIP and 8-pin SO packages. The devices operate over the com-mercial, extended, and automotive temperature ranges.ApplicationsUtility Meters Lighting Systems Industrial Control Telecom Security Systems Instrumentation ProfibusFeatures♦+5.0V Operation♦Extended ESD Protection for RS-485/RS-422 I/O Pins±15kV Human Body Model ♦True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility ♦Hot-Swap Input Structures on DE and RE ♦Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission(MAX13080E–MAX13085E/MAX13089E)♦Low-Current Shutdown Mode (Except MAX13081E/MAX13084E/MAX13087E)♦Pin-Selectable Full-/Half-Duplex Operation (MAX13089E)♦Phase Controls to Correct for Twisted-Pair Reversal (MAX13089E)♦Allow Up to 256 Transceivers on the Bus ♦Available in Industry-Standard 8-Pin SO PackageMAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers________________________________________________________________Maxim Integrated Products 1Ordering Information19-3590; Rev 1; 4/05For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Selector Guide, Pin Configurations, and Typical Operating Circuits appear at end of data sheet.Ordering Information continued at end of data sheet.M A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSDC ELECTRICAL CHARACTERISTICS(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.) (Note 1)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.(All Voltages Referenced to GND)Supply Voltage (V CC ).............................................................+6V Control Input Voltage (RE , DE, SLR,H/F , TXP, RXP)......................................................-0.3V to +6V Driver Input Voltage (DI)...........................................-0.3V to +6V Driver Output Voltage (Z, Y, A, B).............................-8V to +13V Receiver Input Voltage (A, B)....................................-8V to +13V Receiver Input VoltageFull Duplex (A, B)..................................................-8V to +13V Receiver Output Voltage (RO)....................-0.3V to (V CC + 0.3V)Driver Output Current.....................................................±250mAContinuous Power Dissipation (T A = +70°C)8-Pin SO (derate 5.88mW/°C above +70°C).................471mW 8-Pin Plastic DIP (derate 9.09mW/°C above +70°C).....727mW 14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW 14-Pin Plastic DIP (derate 10.0mW/°C above +70°C)...800mW Operating Temperature RangesMAX1308_EC_ _.................................................0°C to +75°C MAX1308_EE_ _..............................................-40°C to +85°C MAX1308_EA_ _............................................-40°C to +125°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CMAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________3DC ELECTRICAL CHARACTERISTICS (continued)(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.) (Note 1)M A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 4_______________________________________________________________________________________DRIVER SWITCHING CHARACTERISTICSMAX13080E/MAX13081E/MAX13082E/MAX13089E WITH SRL = UNCONNECTED (250kbps)(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.)RECEIVER SWITCHING CHARACTERISTICSMAX13080E/MAX13081E/MAX13082E/MAX13089E WITH SRL = UNCONNECTED (250kbps)(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.)MAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________5DRIVER SWITCHING CHARACTERISTICSMAX13083E/MAX13084E/MAX13085E/MAX13089E WITH SRL = V CC (500kbps)(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.)RECEIVER SWITCHING CHARACTERISTICSMAX13083E/MAX13084E/MAX13085E/MAX13089E WITH SRL = V CC (500kbps)(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.)M A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 6_______________________________________________________________________________________DRIVER SWITCHING CHARACTERISTICSMAX13086E/MAX13087E/MAX13088E/MAX13089E WITH SRL = GND (16Mbps)(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.)RECEIVER SWITCHING CHARACTERISTICSMAX13086E/MAX13087E/MAX13088E/MAX13089E WITH SRL = GND (16Mbps)(V CC = +5.0V ±10%, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5.0V and T A = +25°C.)Note 2:∆V OD and ∆V OC are the changes in V OD and V OC , respectively, when the DI input changes state.Note 3:The short-circuit output current applies to peak current just prior to foldback current limiting. The short-circuit foldback outputcurrent applies during current limiting to allow a recovery from bus contention.MAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________70.800.901.501.101.001.201.301.401.60-40-10520-253550958011065125SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (m A )0201040305060021345OUTPUT CURRENTvs. RECEIVER OUTPUT-HIGH VOLTAGEM A X 13080E -89E t o c 02OUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )20104030605070021345OUTPUT CURRENTvs. RECEIVER OUTPUT-LOW VOLTAGEM A X 13080E -89E t o c 03OUTPUT LOW VOLTAGE (V)O U T P U T C U R R E N T (m A )4.04.44.24.84.65.25.05.4RECEIVER OUTPUT-HIGH VOLTAGEvs. TEMPERATURETEMPERATURE (°C)O U T P U T H I G H V O L T A G E (V )-40-10520-2535509580110651250.10.70.30.20.40.50.60.8RECEIVER OUTPUT-LOW VOLTAGEvs. TEMPERATURETEMPERATURE (°C)O U T P U T L O W V O L T A G E (V )-40-10520-25355095801106512502040608010012014016012345DRIVER DIFFERENTIAL OUTPUT CURRENT vs. DIFFERENTIAL OUTPUT VOLTAGEDIFFERENTIAL OUTPUT VOLTAGE (V)D I F FE R E N T I A L O U T P U T C U R R E N T (m A )2.02.82.43.63.24.44.04.8DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs. TEMPERATURED I F FE R E N T I A L O U T P U T V O L T A G E (V )-40-10520-253550958011065125TEMPERATURE (°C)40201008060120140180160200-7-5-4-6-3-2-1012354OUTPUT CURRENT vs. TRANSMITTEROUTPUT-HIGH VOLTAGEOUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )60402080100120140160180200042681012OUTPUT CURRENT vs. TRANSMITTEROUTPUT-LOW VOLTAGEOUTPUT-LOW VOLTAGE (V)O U T P U T C U R R E N T (m A )Typical Operating Characteristics(V CC = +5.0V, T A = +25°C, unless otherwise noted.)M A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 8_______________________________________________________________________________________21543679810SHUTDOWN CURRENT vs. TEMPERATUREM A X 13080E -89E t o c 10S H U T D O W N C U R R E N T (µA )-40-10520-253550958011065125TEMPERATURE (°C)600800700100090011001200DRIVER PROPAGATION DELAY vs. TEMPERATURE (250kbps)D R I VE R P R O P A G A T I O N D E L A Y (n s )-40-10520-253550958011065125TEMPERATURE (°C)300400350500450550600DRIVER PROPAGATION DELAY vs. TEMPERATURE (500kbps)D R I VE R P R O P A G A T I O N D E L A Y (n s )-40-10520-253550958011065125TEMPERATURE (°C)1070302040506080DRIVER PROPAGATION DELAY vs. TEMPERATURE (16Mbps)D R I VE R P R O P A G A T I O N D E L A Y (n s )-40-10520-253550958011065125TEMPERATURE (°C)40201008060120140160180RECEIVER PROPAGATION DELAYvs. TEMPERATURE (250kpbs AND 500kbps)R E C E I V E R P R O P A G A T I O N D E L A Y (n s )-40-10520-253550958011065125TEMPERATURE (°C)40201008060120140160180RECEIVER PROPAGATION DELAYvs. TEMPERATURE (16Mbps)R EC E I V E R P R O P A G AT I O N D E L A Y (n s )-40-10520-253550958011065125TEMPERATURE (°C)2µs/div DRIVER PROPAGATION DELAY (250kbps)DI 2V/divV Y - V Z 5V/divR L = 100Ω200ns/divRECEIVER PROPAGATION DELAY(250kbps AND 500kbps)V A - V B 5V/divRO 2V/divTypical Operating Characteristics (continued)(V CC = +5.0V, T A = +25°C, unless otherwise noted.)MAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers_______________________________________________________________________________________9Test Circuits and Waveforms400ns/divDRIVER PROPAGATION DELAY (500kbps)DI 2V/divR L = 100ΩV Y - V Z 5V/div10ns/div DRIVER PROPAGATION DELAY (16Mbps)DI 2V/divR L = 100ΩV Y 2V/divV Z 2V/div40ns/divRECEIVER PROPAGATION DELAY (16Mbps)V B 2V/divR L = 100ΩRO 2V/divV A 2V/divTypical Operating Characteristics (continued)(V CC = +5.0V, T A = +25°C, unless otherwise noted.)Figure 2. Driver Timing Test CircuitM A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 10______________________________________________________________________________________Test Circuits and Waveforms (continued)Figure 4. Driver Enable and Disable Times (t DHZ , t DZH , t DZH(SHDN))DZL DLZ DLZ(SHDN)MAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversTest Circuits and Waveforms (continued)Figure 6. Receiver Propagation Delay Test CircuitM A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversMAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversMAX13080E/MAX13083E/MAX13086EMAX13081E/MAX13084E/MAX13086E/MAX13087EFunction TablesM A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers MAX13082E/MAX13085E/MAX13088EFunction Tables (continued)MAX13089EDetailed Description The MAX13080E–MAX13089E high-speed transceivers for RS-485/RS-422 communication contain one driver and one receiver. These devices feature fail-safe circuit-ry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted, or when they are connected to a terminated transmission line with all dri-vers disabled (see the Fail-Safe section). The MAX13080E/MAX13082E/MAX13083E/MAX13085E/ MAX13086E/MAX13088E/MAX13089E also feature a hot-swap capability allowing line insertion without erroneous data transfer (see the Hot Swap Capability section). The MAX13080E/MAX13081E/MAX13082E feature reduced slew-rate drivers that minimize EMI and reduce reflec-tions caused by improperly terminated cables, allowing error-free data transmission up to 250kbps. The MAX13083E/MAX13084E/MAX13085E also offer slew-rate limits allowing transmit speeds up to 500kbps. The MAX13086E/MAX13087E/MAX13088Es’ driver slew rates are not limited, making transmit speeds up to 16Mbps possible. The MAX13089E’s slew rate is selectable between 250kbps, 500kbps, and 16Mbps by driving a selector pin with a three-state driver.The MAX13082E/MAX13085E/MAX13088E are half-duplex transceivers, while the MAX13080E/MAX13081E/ MAX13083E/MAX13084E/MAX13086E/MAX13087E are full-duplex transceivers. The MAX13089E is selectable between half- and full-duplex communication by driving a selector pin (H/F) high or low, respectively.All devices operate from a single +5.0V supply. Drivers are output short-circuit current limited. Thermal-shutdown circuitry protects drivers against excessive power dissi-pation. When activated, the thermal-shutdown circuitry places the driver outputs into a high-impedance state.Receiver Input Filtering The receivers of the MAX13080E–MAX13085E, and the MAX13089E when operating in 250kbps or 500kbps mode, incorporate input filtering in addition to input hysteresis. This filtering enhances noise immunity with differential signals that have very slow rise and fall times. Receiver propagation delay increases by 25% due to this filtering.Fail-Safe The MAX13080E family guarantees a logic-high receiver output when the receiver inputs are shorted or open, or when they are connected to a terminated transmission line with all drivers disabled. This is done by setting the receiver input threshold between -50mV and -200mV. If the differential receiver input voltage (A - B) is greater than or equal to -50mV, RO is logic-high. If (A - B) is less than or equal to -200mV, RO is logic-low. In the case of a terminated bus with all transmitters disabled, the receiv-er’s differential input voltage is pulled to 0V by the termi-nation. With the receiver thresholds of the MAX13080E family, this results in a logic-high with a 50mV minimumnoise margin. Unlike previous fail-safe devices, the-50mV to -200mV threshold complies with the ±200mVEIA/TIA-485 standard.Hot-Swap Capability (Except MAX13081E/MAX13084E/MAX13087E)Hot-Swap InputsWhen circuit boards are inserted into a hot or powered backplane, differential disturbances to the data buscan lead to data errors. Upon initial circuit board inser-tion, the data communication processor undergoes itsown power-up sequence. During this period, the processor’s logic-output drivers are high impedanceand are unable to drive the DE and RE inputs of these devices to a defined logic level. Leakage currents up to±10µA from the high-impedance state of the proces-sor’s logic drivers could cause standard CMOS enableinputs of a transceiver to drift to an incorrect logic level. Additionally, parasitic circuit board capacitance couldcause coupling of V CC or GND to the enable inputs. Without the hot-swap capability, these factors could improperly enable the transceiver’s driver or receiver.When V CC rises, an internal pulldown circuit holds DElow and RE high. After the initial power-up sequence,the pulldown circuit becomes transparent, resetting thehot-swap tolerable input.Hot-Swap Input CircuitryThe enable inputs feature hot-swap capability. At theinput there are two NMOS devices, M1 and M2 (Figure 9). When V CC ramps from zero, an internal 7µstimer turns on M2 and sets the SR latch, which alsoturns on M1. Transistors M2, a 1.5mA current sink, andM1, a 500µA current sink, pull DE to GND through a5kΩresistor. M2 is designed to pull DE to the disabledstate against an external parasitic capacitance up to100pF that can drive DE high. After 7µs, the timer deactivates M2 while M1 remains on, holding DE low against three-state leakages that can drive DE high. M1 remains on until an external source overcomes the required input current. At this time, the SR latch resetsand M1 turns off. When M1 turns off, DE reverts to a standard, high-impedance CMOS input. Whenever V CCdrops below 1V, the hot-swap input is reset.For RE there is a complementary circuit employing two PMOS devices pulling RE to V CC. MAX13080E–MAX13089E+5.0V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversM A X 13080E –M A X 13089EMAX13089E ProgrammingThe MAX13089E has several programmable operating modes. Transmitter rise and fall times are programma-ble, resulting in maximum data rates of 250kbps,500kbps, and 16Mbps. To select the desired data rate,drive SRL to one of three possible states by using a three-state driver: V CC , GND, or unconnected. F or 250kbps operation, set the three-state device in high-impedance mode or leave SRL unconnected. F or 500kbps operation, drive SRL high or connect it to V CC .F or 16Mbps operation, drive SRL low or connect it to GND. SRL can be changed during operation without interrupting data communications.Occasionally, twisted-pair lines are connected backward from normal orientation. The MAX13089E has two pins that invert the phase of the driver and the receiver to cor-rect this problem. F or normal operation, drive TXP and RXP low, connect them to ground, or leave them uncon-nected (internal pulldown). To invert the driver phase,drive TXP high or connect it to V CC . To invert the receiver phase, drive RXP high or connect it to V CC . Note that the receiver threshold is positive when RXP is high.The MAX13089E can operate in full- or half-duplex mode. Drive H/F low, leave it unconnected (internal pulldown), or connect it to GND for full-duplex opera-tion. Drive H/F high for half-duplex operation. In full-duplex mode, the pin configuration of the driver and receiver is the same as that of a MAX13080E. In half-duplex mode, the receiver inputs are internally connect-ed to the driver outputs through a resistor-divider. This effectively changes the function of the device’s outputs.Y becomes the noninverting driver output and receiver input, Z becomes the inverting driver output and receiver input. In half-duplex mode, A and B are still connected to ground through an internal resistor-divider but they are not internally connected to the receiver.±15kV ESD ProtectionAs with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against electro-static discharges encountered during handling and assembly. The driver outputs and receiver inputs of the MAX13080E family of devices have extra protection against static electricity. Maxim’s engineers have devel-oped state-of-the-art structures to protect these pins against ESD of ±15kV without damage. The ESD struc-tures withstand high ESD in all states: normal operation,shutdown, and powered down. After an ESD event, the MAX13080E–MAX13089E keep working without latchup or damage.ESD protection can be tested in various ways. The transmitter outputs and receiver inputs of the MAX13080E–MAX13089E are characterized for protec-tion to the following limits:•±15kV using the Human Body Model•±6kV using the Contact Discharge method specified in IEC 61000-4-2ESD Test ConditionsESD performance depends on a variety of conditions.Contact Maxim for a reliability report that documents test setup, test methodology, and test results.Human Body ModelFigure 10a shows the Human Body Model, and Figure 10b shows the current waveform it generates when dis-charged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest,which is then discharged into the test device through a 1.5k Ωresistor.IEC 61000-4-2The IEC 61000-4-2 standard covers ESD testing and performance of finished equipment. However, it does not specifically refer to integrated circuits. The MAX13080E family of devices helps you design equip-ment to meet IEC 61000-4-2, without the need for addi-tional ESD-protection components.+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversThe major difference between tests done using the Human Body Model and IEC 61000-4-2 is higher peak current in IEC 61000-4-2 because series resistance is lower in the IEC 61000-4-2 model. Hence, the ESD with-stand voltage measured to IEC 61000-4-2 is generally lower than that measured using the Human Body Model. Figure 10c shows the IEC 61000-4-2 model, and Figure 10d shows the current waveform for IEC 61000-4-2 ESD Contact Discharge test.Machine Model The machine model for ESD tests all pins using a 200pF storage capacitor and zero discharge resis-tance. The objective is to emulate the stress caused when I/O pins are contacted by handling equipment during test and assembly. Of course, all pins require this protection, not just RS-485 inputs and outputs.Applications Information256 Transceivers on the BusThe standard RS-485 receiver input impedance is 12kΩ(1-unit load), and the standard driver can drive up to 32-unit loads. The MAX13080E family of transceivers has a1/8-unit load receiver input impedance (96kΩ), allowingup to 256 transceivers to be connected in parallel on one communication line. Any combination of these devices,as well as other RS-485 transceivers with a total of 32-unit loads or fewer, can be connected to the line.Reduced EMI and ReflectionsThe MAX13080E/MAX13081E/MAX13082E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to250kbps. The MAX13083E/MAX13084E/MAX13085Eoffer higher driver output slew-rate limits, allowing transmit speeds up to 500kbps. The MAX13089E withSRL = V CC or unconnected are slew-rate limited. WithSRL unconnected, the MAX13089E error-free data transmission is up to 250kbps. With SRL connected toV CC,the data transmit speeds up to 500kbps. MAX13080E–MAX13089E+5.0V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversM A X 13080E –M A X 13089ELow-Power Shutdown Mode (Except MAX13081E/MAX13084E/MAX13087E)Low-power shutdown mode is initiated by bringing both RE high and DE low. In shutdown, the devices typically draw only 2.8µA of supply current.RE and DE can be driven simultaneously; the devices are guaranteed not to enter shutdown if RE is high and DE is low for less than 50ns. If the inputs are in this state for at least 700ns, the devices are guaranteed to enter shutdown.Enable times t ZH and t ZL (see the Switching Characteristics section) assume the devices were not in a low-power shutdown state. Enable times t ZH(SHDN)and t ZL(SHDN)assume the devices were in shutdown state. It takes drivers and receivers longer to become enabled from low-power shutdown mode (t ZH(SHDN), t ZL(SHDN))than from driver/receiver-disable mode (t ZH , t ZL ).Driver Output ProtectionTwo mechanisms prevent excessive output current and power dissipation caused by faults or by bus contention.The first, a foldback current limit on the output stage,provides immediate protection against short circuits over the whole common-mode voltage range (see the Typical Operating Characteristics ). The second, a thermal-shut-down circuit, forces the driver outputs into a high-imped-ance state if the die temperature exceeds +175°C (typ).Line LengthThe RS-485/RS-422 standard covers line lengths up to 4000ft. F or line lengths greater than 4000ft, use the repeater application shown in Figure 11.Typical ApplicationsThe MAX13082E/MAX13085E/MAX13088E/MAX13089E transceivers are designed for bidirectional data commu-nications on multipoint bus transmission lines. F igures 12 and 13 show typical network applications circuits. To minimize reflections, terminate the line at both ends in its characteristic impedance, and keep stub lengths off the main line as short as possible. The slew-rate-lim-ited MAX13082E/MAX13085E and the two modes of the MAX13089E are more tolerant of imperfect termination.Chip InformationTRANSISTOR COUNT: 1228PROCESS: BiCMOS+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversFigure 11. Line Repeater for MAX13080E/MAX13081E/MAX13083E/MAX13084E/MAX13086E/MAX13087E/MAX13089E in Full-Duplex Mode+5.0V, ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversMAX13080E–MAX13089EM A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 TransceiversPin Configurations and Typical Operating CircuitsMAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers______________________________________________________________________________________21Pin Configurations and Typical Operating Circuits (continued)M A X 13080E –M A X 13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers 22______________________________________________________________________________________Ordering Information (continued)MAX13080E–MAX13089E+5.0V , ±15kV ESD-Protected, Fail-Safe, Hot-Swap, RS-485/RS-422 Transceivers______________________________________________________________________________________23Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)。

成都信息工程学院基于RDA5820芯片功能扩展班级：技术人员：文档整理：指导老师：日期：年月号摘要该项目是以收音机芯片为核心，进行一系列功能扩展（扩展功能自定）。

其中采用收音机芯片(RDA5820)进行无线电的接收。

同时以TI芯片(MSP430F5529)作为主控芯片进行显示与控制。

最后是以芯片（TDA2822）作为功放模块进行音量调节。

显示包括时钟显示和收音机频段显示。

关键词：RDA5820；MSP430F5529；TDA2822AbstractA series of function extension is based on the radio chip, in which uses the radio chip (RDA5820) to carry out radio reception. At the same time, with TI chip (MSP430F5529) as the master control chip for display and control. Finally based on chip (TDA2822) as a power amplifier module which can adjust the volume. Display including the clock display and the radio spectrum.Key Words：RDA5820; MSP430F5529; TDA282目录1 引言 (1)1.1 背景 (1)1.2 研究内容提要 (1)2 系统框图 (2)3 主控模块 (3)3.1 芯片选择 (3)3.2 主控芯片 (4)3.3 JTAG接口 (5)3.4 液晶显示模块 (6)3.5 晶振 (6)3.6 变压模块 (7)3.7 MSP430F5529芯片介绍 (7)3.7.1 MSP430系列 (8)3.7.2 部分功能介绍 (9)4 收音机模块 (10)4.1 RDA5820概述 (10)4.2 应用范围 (10)4.3 功能特点 (11)4.4 电气特性 (11)5 功率放大模块 (11)5.1 功率放大电路说明 (11)5.2 TDA2822芯片介绍 (12)5.2.1 概述与特点 (12)5.2.2 引出端功能 (12)5.3 应用电路 (13)5.3.1 TDA2822立体声应用线路 (13)5.3.2 TDA2822单声道桥式（BTL）应用线路 (14)6 部分程序及代码 (14)7 总结 (15)参考文献 (16)1引言1.1背景从1923年1月23日第一批收音机的问世到现今，收音机经历了翻天覆地的“改革”，从矿石收音机、电子管收音机、晶体管收音机、集成电路收音机到如今的DSP收音机（全球收音机数字化），可谓日新月异。