DTC Communications PDTX100S COFDM Transmitter User Manual palladium tx4c

DTC Communications Inc. COFDM Transmitter palladium tx4c

Revised Manual

COFDM TransmitterModel Pd-TX-100 100 mW OutputModel Pd-TX-250 250 mW OutputDTC COMMUNICATIONS, INCORPORATED
DTC COMMUNICATIONS, INC.2warrantyDTC warrants its manufactured componentsagainst defects in material and workmanshipfor a period of two (2) years, commencing onthe date of original purchase.Products manufactured by others that areapproved for use with DTC equipment arewarranted for the manufacturer’s warrantyperiod, commencing from the date of shipmentfrom DTC.FCC informationThe following information is provided as aservice to our law enforcement customers whorequire a Part 90 station license for videosurveillance operations using the 2450 to2483.5 MHz band.You will need to provide two documents:• Form 600 (the application form)• Form 159 (the filing fee form)Forms can be obtained from the FCC on theirwebsite at:www.fcc.govYou can also contact the FCC using their FAXback service at: (888) 418-3676Additional instructions are available bytelephone at: (888) 225-5322The filing fee form is returned to:Federal Communications Commission1270 Fairfield RoadGettysburg, PA 17325-7245PN OP1920303 REV 2copyright noticeCopyright © 2005DTC Communications, Inc. All rightsreserved. No part of this document may bereproduced, transmitted, transcribed, storedin a retrieval system or translated into anylanguage or computer language, in any formor by any means, including but not limited toelectronic, magnetic, mechanical, optical,chemical, manual or otherwise, without theprior written permission of DTCCommunications, Inc.disclaimerThe information in the document is subject tochange without notice. DTC makes norepresentations or warranties with respect tothe contents hereof, and specifically disclaimsany implied warranties of merchantability orfitness for a particular purpose. DTC reservesthe right to revise this publication and tomake changes from time to time in thecontent hereof without obligation of DTC tonotify any person of such revision or changes.trademarksTrademarks of DTC Communications, Inc.include:• DTC• MiniPIX®• DynaPIX®Other product names used in this manual arethe properties of their respective owners.how to contact DTCFor operator and troubleshooting information,customers are encouraged to refer to thedetails in this manual. For additionalclarification or instruction, or to order parts,contact DTC.Customer Service is available Monday throughFriday between the hours of 9:00 AM and5:00 PM EST at:Tel: 603-880-4411Fax: 603-880-6965Website: www.dtccom.comEmail: info@dtccom.com486 Amherst StreetNashua, New Hampshire 03063
DTC COMMUNICATIONS, INC. 3NOTE: Describes special issues you shouldbe aware of while using a particular function.WARNING: Calls out situations in whichequipment could be damaged or a processcould be incorrectly implemented, but inwhich operator safety is not a factor.TIP: Describes application hints.RF EXPOSURE STATEMENTA separation distance of at least 20 cm must bemaintained between the antenna and the body ofthe user or nearby persons.NOTE: This device is for occupational useonly. Occupational users are those personswho are exposed as a consequence of theiremployment, provided these persons are fullyaware of and exercise control over theirexposure.manual conventionsQuick Start ............................................................................ 4-5Complete These Steps ................................................................ 4Thermal Issues ........................................................................... 4Introduction ............................................................................... 6Operation ............................................................................... 7Using your Palladium Transmitter ................................................ 7Changing your Transmitter Configuration .................................... 7Components ........................................................................... 8-9Programming ...................................................................... 10-15System PC Controller Application Software .............................. 10Transmitter Control Application ................................................. 11Specifications ..................................................................... 16-17Warranty ............................................................................. 18Contact Us ............................................................................. 19TABLE OF CONTENTS
DTC COMMUNICATIONS, INC.4NOTE: Eight Channel LEDs are located under the sliding controlpanel door. If all 8 green LEDs are flashing, this indicates that yourbattery source is low.Complete these steps:1Connect the transmitter antenna to the SMA connector on the top of thePalladium unit.2If you plan to use audio, connect one or two microphones to the Audio 1and/or Audio 2 LEMO connectors.3Connect power and video input via the Multi I/O cable to the 6-pinHirose connector:a Attach your camera video input (75 ohm composite video source inPAL or NTSC) to the Multi I/O cable BNC connector.b Apply the necessary power to your camera and turn ON.c Attach a 12 VDC power source (such as the supplied battery pack orthe AC power adapter) to the Multi I/O cable via the Molex connector.The input voltage range is from 10 to 18 VDC.MICROPHONE(S)CAMERAANTENNA9 AA BATTERY PACK123Palladium Transmitter, Top ViewQUICK STARTTypical Wiring ConfigurationThermal IssuesHigher power Palladium Pd-TX-250 Transmitters featuremounting tabs for convenient mounting and heatdissipation. If your Palladium Transmitter has these tabs,proper heat sink mounting is recommended for optimalperformance. An optional heat sink can be purchasedfrom DTC. See page 8 for heat sinking instructions.
DTC COMMUNICATIONS, INC. 54Slide the control panel door open (to the right).5When power is applied, the transmitter will power-up to its last state.Ensure that the green RF LED turns ON indicating the unit istransmitting. If needed, push the RF button to begin transmitting.The channel number LED also turns ON, representing the most recentchannel setting from the last time the transmitter was used.6 If you need to change the operating channel, press the CONFIG buttonto cycle through the 8 available channels indicated by the channelnumber LEDs. Refer to the Programming section on page 10 for moreinformation on channel settings. When you change the channelconfiguration, the RF transmission is automatically switched OFF toprevent accidental interference. When you have selected the channelyou need, push the RF button to start transmitting again. The RF LEDwill turn ON.NOTE: A red ALARM LED indicates that no video is connected.Your Transmitter is now operational. Confirm its signal with yourPalladium Receiver.WARNING: Do not apply power to the transmitter unless an antennaor non-radiating load is connected to the Antenna SMA connector.NOTE: The RF switch should remain ON during normal use. The RFautomatically shuts off during programming to prevent accidentaltransmissions on unintended frequencies.456QUICK STARTPalladium Pd-TX-100 Transmitter,Front ViewOptional Data andChaining Connector
DTC COMMUNICATIONS, INC.6INTRODUCTIONThe Palladium Series of digital video transmitters provide exceptional videoquality in high multipath environments. They are ideal for use insidebuildings, in urban areas, and in other applications where multipathwould normally cause video tearing or breakup.All Palladium Series transmitters are designed for spectrum-efficient 2.5MHz channel spacing. Approximately 400 carriers are used to transmitvideo and two channels of voice and data. Palladium transmitters may belocated on adjacent channels without a guard band. AES 128-bitencryption ensures users of secure communications.The Palladium 100 is a small transmitter with a 100 mW RF power output.This unit is ideal for concealments and shorter range robotic and UAVapplications. The package is only 7.5” x 2.5” x 0.75”. Power consumption is6 Watts. All connections are conveniently located off the ends of the unit.Many users will want to power this device with disposable batteries.The Palladium 250 incorporates an internal power amplifier bringing totalpower output to 250 mW. Height and width are identical to the Palladium100, with the depth of the unit increasing an additional 0.5”. ThePalladium 250 is ideal for many surveillance applications and short tomid-range robotic and UAV applications.Both versions are built out of rugged milled aluminum housings. ThePalladium 250 features mounting tabs for convenient heatsinking (page 8).Palladium Pd-TX-100100-Milliwatt Digital TransmitterNOTE: Use only Lithium batteries with this device.
DTC COMMUNICATIONS, INC. 7OPERATIONUsing your Palladium TransmitterFollow the instructions given in the Quick Start section on pages 4-5.When power is first applied to the Palladium, the unit reverts to the lastused channel and RF (ON/OFF) state. One of the green channel LEDs willturn ON indicating the active channel. The Alarm LED may be ON, whichindicates that there is no active video input.NOTE: Since the Palladium transmitter always returns to the lastconfiguration on power-up, the unit should always be deployed withthe RF switch ON. Therefore, once deployed, control of the unit mustbe restricted to applying and removing power. See the Quick Start(pages 4-5), and Heatsinking (page 8) for more installation guidance.Changing your Transmitter ConfigurationThe Palladium Transmitter can store up to 8 different configurations,which can be selected on the front panel. Each of these configurations canbe programmed into the Transmitter with the supplied DTC ProgrammingSoftware and a Windows PC. Refer to the Programming section on page 10for more information.To cycle through your preconfigured channels press the CONFIG buttononce to advance to the next setting. By default, the Palladium will turnOFF the transmitted signal while you are changing channels. This is toprevent accidental interference. Push the RF button after channel selectionto resume RF transmission of your video image.Palladium Pd-TX-250250 Milliwatt Digital Transmitterwith Mounting Tabs
DTC COMMUNICATIONS, INC.8HEAT SINKINGWhen to Use a Heat SinkThe Palladium 100 does not require heat sinking in normal service. ThePalladium 250 should be attached to a heat sink or heat sinking surface ifthe unit is to be installed in an enclosure, or in deployments where theambient temperature could exceed 50oC.Typical Palladium Operating TemperaturesA wide range of variables can affect the temperature of electronic devicesincluding ambient temperature, air flow, heat sink and mounting consider-ations. In a typical test performed at room temperature, the Palladium250 without a heatsink has been observed to have a baseplate operatingtemperature of 40oC (104oF). The Palladium 100 has been observed tohave a baseplate operating temperature of 37oC (99oF) in a similar test.Heat Sink InstallationTo install the heat sink, complete the following steps:1. Align the transmitter and heatsink, with the back of the transmittermating with the front, flat surface of the heatsink.2. Secure the heatsink with four (4) 6-32 x 1” screws. Install the screwsfrom the transmitter side.3. Make sure there is good contact between the transmitter and theheatsink. They should be mounted flush to one another.MountingScrews (4)BEST: FinsVertical AwayFrom WallBEST: FinsVertical AwayFrom WallGOOD: FinsVertical AwayFrom WallGOOD:Fins UpNEVER: FinsHorizontalNEVER: FinsDown
DTC COMMUNICATIONS, INC. 9COMPONENTSAudio 1 and 2 Connectors (LEMO)These connectors provide themicrophone connections to thetransmitter. Either one or twomicrophones can be used with thePalladium Transmitter.Transmitter Antenna Connector(SMA) This connector attaches tothe transmitter antenna and carriesthe RF output signal. Always ensurethe transmitter antenna is attachedbefore operating the PalladiumTransmitter.Muiti I/O Connector (6-pin Hirose)This connector providesconnections for the DC power input,programming, and 75 Ohmcomposite video signal.ALARM LED This red LED indicates a valid video signalis not present.RF LED This green LED indicates that the RFoutput is ON.RF Button This membrane switch toggles ON/OFF theRF output. Normally this should be left ON.CONFIG Button This membrane switch cycles throughthe eight channels.Channel LEDs These green LEDs, numbered 1 through8, indicate the channel number currently selected.Each channel represents a set of preconfiguredsettings.
DTC COMMUNICATIONS, INC.10PROGRAMMINGSystem PC Controller Application SoftwareAdvanced control of the system is available by using PC control applica-tions. Typically users may want to customize the default configurations tocontrol settings such as frequency, scrambling keys, modulationparameters, and video resolution.The transmitter is controlled by the application DTC_tx_ctrl.exe avail-able on the CD delivered with the product.A PC is required with two RS232 Serial COM ports to control both atransmitter and receiver simultaneously. Where changes are to be made toeither a transmitter, or a receiver, at different times, a PC with a singleRS232 Serial COM part can be used.Installation of the two control programs is as simple as copying them fromthe CD to a suitable location on the PC. No install shield routine islaunched. Note that the controllers generate their own log andinitialization files, so it is best to create a dedicated directory for theseapplications, perhaps with links to the applications from the desktop ofthe PC.Getting Started•Use the supplied cables to connect the chosen COM port(s) of the PC tounit(s) to be configured.•Launch each application in turn by double clicking or using the runcommand.•Connection with a transmitter should be automatic, but the user canforce selection of the correct COM port using the drop down, followed bythe Connect button.•Errors may appear during the connection process if the PC is unable toautomatically ascertain which unit is connected to which COM port.
DTC COMMUNICATIONS, INC. 11PROGRAMMINGTransmitter Control ApplicationOutput Frequency (MHz)The transmit frequency can be changed by entering the new desiredfrequency in this field. Values outside the range supported by a particulartransmitter type will be rounded to the highest or lowest supportedfrequency as appropriate. The resolution of the transmit frequency iscomplex and resolved to the closest achievable within the constants of thesupported step sizes of 1MHz, 1.6667 MHz and 2.5 MHz.Modulation OutputThis control is used to turn on and off the RF output. After a configurationchange, the output always reverts to OFF. It must be ON for operation.Modulation FECThe default FEC is 2/3, however improved range operation can be achievedby selecting FEC 1/3. FEC 1/3 will improve signal range by 3dB. HoweverFEC 1/3 reduces link capacity to 1.2Mb/s therefore reducing picturequality.FEC Link Bitrate Sensitivity 2/3 2.4Mb/s: -99dBm,1/3 1.2Mb/s: -102dBmModulation Guard IntervalThe Guard Interval is fixed at 1/16 in current software releases.Modulation BandwidthFor the Palladium transmitter products, the modulation bandwidth is fixedat 2.5MHz.COFDM ModeThe COFDM mode can be changed between QPSK and 16QAM. QPSK isthe default mode and will give the strongest most rugged RF linkperformance. Selecting 16QAM reduces the link performance by 5dB butimproves the link data throughput, giving significantly better video quality.Default values are shown in red.OFF2/31/162.5 MHzQPSK(your frequency)
DTC COMMUNICATIONS, INC.12Output AttenuationThis control can be used to make minor adjustments to the output powerlevel, but in normal operation should not be changed from factory settings.Video InputThis control is used to select the composite video input standard. Optionsare PAL, and NTSC both with and without 7.5 IRE pedestal.Video BitrateThe video bit rate is automatically maximized in each configuration whenChaining Input is turned off. This control can be used to set the videobitrate within the constraints of capacity available in the channel, but onlywhen Chaining Input is set to ON.Chaining CANNOT be enabled on normaltransmitters, and as such video bit rate control is automatic.Horizontal resolutionThe video coding resolution can be selected from 704, 528, 480 and 352pixels. Changing the horizontal resolution to lower values will make thecoded picture softer.Care should be taken to match the horizontal resolution to the resolutionof the camera connected to the transmitter; this will give best imageresults.Audio EncoderThe Audio can be turned on and off with this control. Audio is OFF bydefault, but there are several audio modes that vary from very high qualityto speech grade that can be selected with this control. Enabling Audioencoding will degrade the video quality, because some of the available datacapacity is diverted away from video to audio. Selecting high fidelity audiomodes will degrade the video quality more than lower fidelity audio modes.PROGRAMMING(As Desired)NTSC1.1528OFFDefault values are shown in red.
DTC COMMUNICATIONS, INC. 13Audio Input LevelThis control is used to define the audio gain to be applied to the audioinput signal. 0dB is used for line level audio and various options up to48dB of gain can be applied for microphone inputs.Unit NameFuture Use.Sleep ModeThis control allows the unit to be forced into a Sleep Mode where mainfunctions are disabled, and the power consumption is significantly re-duced.DataFuture use.Data Baud RateFuture use.Chaining InputFuture use.Chain NumberFuture use.PROGRAMMING24 dB(As Desired)NOOFF1200OFF0Default values are shown in red.
DTC COMMUNICATIONS, INC.14Current ConfigThis field reports the last loaded configuration number. Note that for thePalladium transmitter, changes applied after the configuration has beenloaded are saved immediately into the current configuration.ScramblingIf the AES scrambling option has been purchased for the system in use,then it is possible to encrypt the link. Scrambling must be enabled at thetransmitter by selecting AES in the scrambling field. At this point the userwill need to ensure that the correct key is in use and this is done by usingOptions/Write AES key. The key is 128 bits and is entered as 32 ASCIIhexadecimal characters (0-9 and A-F).Video Locked (Status Only)This status information indicates whether the transmitter is successfullylocked to the incoming composite video signal. Unlocked status mayindicate cabling faults, or poor quality incoming video feeds to the unit.Software Version (Status Only)This status information describes the version of the software running thetransmitter product.FPGA Version (Status Only)Engineering use only.Serial Number (Status Only)This status information is the electronic serial number of the transmitterPCB. This number can be used for upgrades or support.Chaining (Status Only)Future use.PROGRAMMING(Ch. No.)OFFDefault values are shown in red.
DTC COMMUNICATIONS, INC. 15OptionsTimeouts – password protected access to change timeouts used duringthe serial communications between the unit and the controller.Engineering – password protected access to further diagnostic andcalibration features.Write License Code – open a further password protected box for enteringlicense codes for future use.Change RS232 address – prompts the user to change the units RS-232address, which can be useful when connecting multiple units together viaa multi drop RS-485 bus for control purposes.Write AES Key – opens a dialogue box for entering a 128bit AESscrambling key, as 32 ASCII hexadecimal characters (0…F)Restore Defaults – restores factory default settings in the transmitter.Polling Enabled – selecting this option makes the control applicationautomatically refresh the data presented to the user every few seconds.FileLoad Config – used for loading configuration data to text file.Save Config - used for saving configuration data to text file.Change Logfile – opens a standard Windows file save dialog box whichallows the user to change the path and name of the log file generated bythe application.Exit – exits the control application.PROGRAMMING
DTC COMMUNICATIONS, INC.16PhysicalUnit Dimensions Pd-TX-100 7.5 x 2.5 x 0.75 in (127 mm x 70 mm x 30 mm) Pd-TX-250 7.5 x 2.5 x 1.25 in (127 mm x 70 mm x 43 mm)EnvironmentalOperational Temp -10 degrees C to 70 degrees CPowerInput Voltage 10 to 18 VDCPower Consumption Pd-TX-100 Fully Operational ~ 6.5 W, Sleep Mode < 0.5 W Pd-TX-250 Fully Operational ~ 10 W, Sleep Mode < 0.5 WControlPC Control Interface RS-232.Memory Ten user-programmable configurationsVideo EncodingCompression Standard MPEG-2 with non-DVB modesChrominance Profile 4:2:0Line Standard PAL 625 or NTSC 525Horizontal Resolution 704, 528, 480, 352 pixels (528 as standard)Vertical Resolution 576 (625 lines) or 480 (525 lines)Video Bitrates 1Mbps to 10 MbpsSystem Latency End to end delay of 43 millisecondsSPECIFICATIONS
DTC COMMUNICATIONS, INC. 17SPECIFICATIONSAudio EncodingInput Stereo or Dual Mono pairBitrates 28 kbps to 72 kbps depending on configurationSampling Frequency 32 kHz, 16 kHz or 8kHzTHD < 0.1% maxResponse 20Hz to 6KHz, +/- 0.25dBCrosstalk > 55 dB minS/N 60 dB RMSComposite Video InputStandards NTSC (with and without pedestal) or PALSpecification Rec. ITU-R BT.470-4Connector HiroseComposite PAL and NTSC decoding Eight-bit comb filtering composite decoderAnalog AudioAnalog Audio Input +10 dBuNominal Level +4 dBuDataBaud Rate Up to 115 kbaudConnector LEMOScramblingScrambling type Fixed key scrambling systemAlgorithms offered include AES.COFDM RF outputOutput Frequency Band DependentOccupied Bandwidth 2.44 MHzPower 100 mW or 250 mWConnector SMACOFDM Standard Proprietary, 2.5 MHz channel spacing, OFDMbandwidth of 2.44 MHz with 400 carriers.
DTC COMMUNICATIONS, INC.18 TWO YEAR WARRANTYDTC Communications, Inc. (DTC) warrants its RF transmitting and receiving products to be free fromdefects in workmanship or material for a period of two (2) years from the date of shipment unlessotherwise stated.The liability of DTC, Inc. under this warranty is limited to replacing, repairing, or issuing credit, atoption, for any products, which are returned by the purchaser during such warranty period, provided:DTC is notified and a Repair Authorization Number is issued by DTC Customer Service within 30 daysafter discovery of such defects by Customer.The defective units are returned to DTC with transportation charged Prepaid by the Customer.Product damaged in shipment must be reported to and claim forms filed with the Carrier by theCustomer. In shipments to the factory, notice and claim procedures will be initiated by DTC.DTC’s examination of such products shall disclose to its satisfaction that such defects exist and havenot been caused by misuse, misapplication, neglect, improper installation, improper storage, alteration,physical damage or accidents.The warranty shall not apply to microphones, batteries, antennas, crystals or material ordinarilysusceptible to field damage or any accessories of a disposable nature. The warranty shall not apply toEngineering Prototypes or Customer requested modifications to electronic circuits.This warranty does not apply to and DTC does not independently warrant items or systems sold by DTCwhich are produced by other manufacturers. With respect to such items, the Customer shall look to thewarranty of the original manufacturer and DTC disclaims all warranty, expressed or implied.Nothing in this warranty, or any statement, brochure, bulletin, or advertisement is to be interpreted asestablishing the suitability of any product for particular application or use. Applications of the productand the determination of suitability for any application, is the sole responsibility of the Customer.
DTC COMMUNICATIONS, INC. 19CONTACT USDirectorState & Local Agencies & International SalesMichael Demos(Nashua Main Office Numbers)direct voice (603) 546-2120cell (603) 320-3255mdemos@dtccom.comSales RepresentativesNashua Main Office Numbersvoice (603) 880-4411toll free (800) 233-8639fax (603) 880-6965Director of Federal SalesJohn Morgan(Nashua Main Office Numbers)direct voice (603) 546-2122cell (603) 320-3257jmorgan@dtccom.comInside SalesChristine Guzman(Nashua Main Office Numbers)direct voice (603) 546-2217cguzman@dtccom.comME, NH, VTOEM Sales ManagerRalph Descheneaux(Nashua Main Office Numbers)direct voice (603) 546-2119cell (603) 738-3627rdeschen@dtccom.comREGIONAL SALES MANAGERSHoward Richtoll free (888) 819-8570voice (860) 626-8570fax (860) 626-8571NY, MA, CT, RI, PA, NJ, MD, DE,WV, DChrich@dtccom.comFloyd Flowersvoice (208) 667-5197fax (208) 676-8107WA, OR, ID, MT, ND, WY, SDGary Nicholstoll free (866) 794-2823voice (765) 473-8917fax (765) 473-8920MN, WI, MI, IA, MO, IL,IN, OH, KY, NEgnichols@dtccom.comFrank Priolitoll free (800) 246-2610voice (727) 392-4761fax (727) 320-0509FL, GA, AL, MS, TN, NC,SC, VAfprioli@dtccom.comJoe Parkinsontoll free (800) 952-4914voice (909) 598-5110fax (909) 598-3120CA, AZ, NV, UT, HI, AKjparkinson@dtccom.comEd Bryantvoice (903) 725-7229fax (903) 725-7863TX, OK, AR,LA, NM, KS, COebryant@dtccom.comCONTACT USFederal Sales ManagerWalter Patenaude(Nashua Main Office Numbers)direct voice (603) 546-2161cell (413) 454-3651wpatenaude@dtccom.comInternational Sales ManagerDana Crawford(Nashua Main Office Numbers)direct voice (603) 546-2110cell (508) 320-7225dcrawford@dtccom.com
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