Tactical Electronics SX500 100m WATT UHF TRANSCEIVER User Manual TRANSCEIVER

Tactical Electronics Corporation 100m WATT UHF TRANSCEIVER TRANSCEIVER

MANUAL

SX500 TRANSCEIVEROPERATING INSTRUCTIONSThese operating instructions are intended to provide the user with sufficient information toinstall and operate the unit correctly.The SX500 UHF transceiver is intended to fulfil numerous OEM narrow band UHFapplications by virtue of its highly flexible synthesized design approach, miniature size andcost-effective performance. The transceiver is used for telemetry links and providesan RF output power of 100mW. The unit complies with both FCC Part 90 and Industry Canada type acceptance requirementsas well as being approved to the EN 300 220 specification for use throughout Europe and much of the world The module is also approved to the EMC specification ETS 300 683.
A label must be applied to the outside of the equipment containing the following details:FCC FCC ID : EFOSX500 Complies with FCC Parts 90 and 15
Frequency (MHz) Restrictions Equipment Marking458.5000 Band Edge458.5125 SRD SI 1993/1591-15-GB458.5250 SRD SI 1993/1591-15-GB458.5375 SRD SI 1993/1591-15-GB458.5500 SRD SI 1993/1591-15-GB458.5625 SRD SI 1993/1591-15-GB458.5750 SRD SI 1993/1591-15-GB458.5875 SRD SI 1993/1591-15-GB458.6000 SRD SI 1993/1591-15-GB458.6125 SRD SI 1993/1591-15-GB458.6250 SRD SI 1993/1591-15-GB458.6375 SRD SI 1993/1591-15-GB458.6500 SRD SI 1993/1591-15-GB458.6625 SRD SI 1993/1591-15-GB458.6750 SRD SI 1993/1591-15-GB458.6875 SRD SI 1993/1591-15-GB458.7000 SRD SI 1993/1591-15-GB458.7125 SRD SI 1993/1591-15-GB458.7250 SRD SI 1993/1591-15-GB458.7375 SRD SI 1993/1591-15-GB458.7500 SRD SI 1993/1591-15-GB458.7625 SRD SI 1993/1591-15-GB458.7750 SRD SI 1993/1591-15-GB458.7875 SRD SI 1993/1591-15-GB458.8000 SRD SI 1993/1591-15-GB458.8125 SRD SI 1993/1591-15-GB458.8250 MPT1361 Only SRD SI 1993/1591-4-GB458.8375 MPT1361 Only SRD SI 1993/1591-9-GB458.8500 SRD SI 1993/1591-15-GB458.8625 SRD SI 1993/1591-15-GB458.8750 SRD SI 1993/1591-15-GB458.8875 SRD SI 1993/1591-15-GB458.9000 MPT1361 Only SRD SI 1993/1591-11-GB458.9125 SRD SI 1993/1591-15-GB458.9250 SRD SI 1993/1591-15-GB458.9375 SRD SI 1993/1591-15-GB 458.9500 Band Edge
INSTALLATIONNOTES: Pin spacing on all connectors is 2.54mm (0.1")All dimensions in millimetresFigure 1 SX500 Outline DrawingCONNECTIONConnection to the SX500 transceiver is via PL1, PL2 and PL3 which plug directly into theuser's own equipment. The location of these connectors is shown in Figure 1 and detailedin the following tables.PL1 PIN NAME FUNCTION REMARKS10V 0 volts common ground2RF O/P RF output 50 ohms output30V 0 volts common groundTable 2 PL1 Pin ConnectionsPL2 PIN NAME FUNCTION REMARKS1+VRAW DC Supply Input 5.5 - 15 VDC input20V 0 volts common groundTable 3 PL2 Pin Connections
PL3PIN NAME FUNCTION REMARKS1Transmit Enable < 0.5V = Transmit ON (internal 20kS pullup)2DI Data Input Digital: DC coupled TTL compatible3 AI Analog Input Analog : 750 mV p-p nominal4RSSI Received SignalStrength Indication RSSI: 0.5 - 2.0 V, 60dB dynamic range(<33kS output impedance)5Squelch Open drain to <0.4V with 10kS load.Low = No Signal6AF Audio Output 250mV p-p nominal(~1kS output impedance)Note inversion of audio from TX input to RXoutput7DATAO/P Data output Open collector digital outputNote inversion of data from TX input to RXoutput8+VOUT + 5 volt supply output VOUT= 50mA maximum current drain90V 0 volts common ground10 RS232I/P serialprogrammingi/pRS232 programming inputNote inverted TTL level data can also be used.If not used, leave not connected, or connect toground.11 RB1 parallel frequencyselect internal pull-up to +5V, active low12 RB213 RB3Table 3 PL3 Pin Connections
Figure 2 Programming AdaptorFREQUENCY PROGRAMMINGAn area of the PIC memory is re-programmable and allows up to 24 channels to be set torandom frequencies and 232 channels to be set to sequential frequencies. The first 8 ofthe random frequencies can be accessed in parallel mode using the three programmingpins RB1, 2 and 3. To access the rest of the channels, the serial programming mode isrequired. The channel change can be controlled through this serial input.The Windows® based software supplied with the SX500 transceiver allows both a newchannel to be selected as well as the re-programming of the internal frequency information.The software can be run on a PC with the serial port connected to PL3 of the SX500transceiver via a suitable adaptor as shown in Figure 2. If the internal stored data is to beaccessed, the read-back function is desired, then PL3 pin 13 of the transceiver must beconnected to pin 2 of the PC serial port via a buffer circuit. A 1k pull-up resistor to +5Vmust also be provided as shown.Software InstallationThe s/w is installed by following the normal procedures for installing windows basedsoftware.Insert CD or the first floppy disk and run the “setup.exe” program. Follow the on-screeninstructions and the s/w will be installed into the c:\program files\sx500 directory (WIN98)or c:\programs\sx500 (WIN95) directories. A program icon will be placed in the s/w groupdesignated during the installation routine.
Running the SoftwareThe s/w is accessed after installing by a single click on the SX500 icon. A screen pageas shown in the following figure will be displayed. All functions are accessed through thisscreen.The fields shown in colour can be accessed and modified. Those field shown in grey arefixed by the hardware of the SX500 and cannot be changed by the user.Data is accessed by moving through the fields using the mouse or the TAB key. Wheredata can be modified, a short description of the data is shown at the bottom of the screenas an aide-memoir.There are 4 main areas of the screen plus the drop-down menu buttons at the top of thescreen. The default settings of the screen give the user access to the common data to bemodified through these four areas:Random Channel Table This gives access to the first 24 channels which canbe set to any random frequency.Sequential Channel Table This gives access to the 232 channels which can onlybe sequentialCurrent Settings This sets up the program parametersUnit Program Commands This area sets up the data transfer to and from theSX500Top Level MenuFile Load Load a pre-stored set of data.A file list is displayed which can be selected and loaded by using themouse, highlighting and double clicking.Save Save the current set of dataA set of directories are displayed. When in the correct directory, over-writethe default file name displayed and click or hot <ENTER>.Print Print the current set of data.The currently selected Windows default printer will be used.Exit Exit the program.
View Internal EEPROM ContentsThis displays in a separate window the contents of the units EEPROM. The data displayedis for the functions and channels displayed on the main screen at that time. Data can behand-modified by moving highlighting the data and over-writing it. THIS SHOULD ONLYBE CARRIED OUT WITH FULL KNOWLEDGE OF THE INTERNAL WORKING OF THESX500. Note that the type of data in each field is displayed at the bottom of the window.While this window is displayed, no access is available to the main screen. The windowmust be cleared down by clearing the “tick” in the View drop-down menu.Unit SettingsPIC Code only displayed when the Readback function has been used to download thecontents of the EEPROM.Current Settings DataCOM port Select the correct serial port for the connection to the SX500,default COM1.Intermediate Frequency The Intermediate Frequency is fixed by the hardware andcannot be accessedFosc The oscillator frequency is fixed by the hardware and cannotbe accessed.Comparison Freq. (Fc) The channel step size is fixed by the hardware at 12.5 kHz.For 25kHz or other channel spacings, set the Table Step sizeaccordingly.Minimum Frequency The minimum frequency is used by the software as a base-line for all other frequency information. This frequency isdetermined by the physical build of the unit and how it hasbeen aligned. The s/w will not allow a frequency below thisminimum to be selected. This frequency is stored in the non-volatile EEPROM in the unit.
Maximum Frequency The maximum frequency that the unit can work on isdetermined by the physical build of the unit and the alignmentof the unit. If a frequency outside the alignment band isselected then the operation of the SX500 will no longer be tothe stated specification. The maximum switching frequencyover which the unit will operate is 5MHz. The software usesthis 5MHz limit to calculate the maximum frequency from theminimum set and uses this for the selectable frequencies inthe drop-down list displayed when selecting frequencies.This 5 MHZ band can be different for the transmit and receivefrequencies.Receiver Offset The normal operation of the SX500 is with the transmit andreceive frequency the same. If an offset is required, a fixedoffset can be made between the frequencies by double-clicking to bring up a selection of offsets. If a frequencyoutside the alignment band is selected then the operation ofthe SX500 will no longer be to the stated specificationMax. Channel Number This number will determine how many sequential channels areprogrammed into the table.Serial/Parallel To ensure the correct operation of the unit after programmingset this flag accordingly. After programming the unit the serialor parallel mode will be set according to this selection.Serial Channel No. To change channel select a new channel number by right-clicking to bring up a list or double-clicking to select the fieldto modify.Random Channel TableThe first 24 channels of the SX500 can store randomly selected channels, which are non-sequential or separated by a common gap. To change an existing frequency, double-clickthe particular channel. Either type in a new frequency or select from a displayed list ofallowed frequencies.Sequential Channel TableTo program these frequencies, ensure that the Max. Channel Number field in the “CurrentSettings” is set correctly. Under the “Sequential Channel Table” area enter the startfrequency and the Table Step size to set the frequencies in the table.
Unit Programming CommandsTo access these 4 functions, double-click on the text or highlight and press ENTER. Whenaccessed, the relevant data areas on the other three screen areas are highlighted to showwhich data is being transferred.Set parallel ch. mode Changes the SX500 from serial channel selection modeto/from parallel.Read from the unit Download the data from the SX500, assuming that the correctinterface lead has been made.Program unit SeSend all the data displayed on the screen to the unit.Program serial channel Send the new serial channel number to the unit.Parallel Channel SelectionThree inputs RB1, RB2 and RB3 applied to PL3 pins 11, 12 and 13 respectively, selectthe operating channel as shown in the following table:CHANNEL SELECTION MostSignificant Bit LeastSignificant Bit CHANNELPIN 13 PIN 12 PIN 11LOW LOW LOW 7LOW LOW HIGH 6LOW HIGH LOW 5LOW HIGH HIGH 4HIGH LOW LOW 3HIGH LOW HIGH 2HIGH HIGH LOW 1HIGH HIGH HIGH 0The logic levels are: LOW = < 0.8V, HIGH = > 2V or floating
TECHNICAL SPECIFICATIONTransceiver (Overall)Frequency Range 400 - 500 MHz (banded)Switching Bandwidth 5MHzChannel Spacing 12.5, 20 and 25 kHzNumber of RF Channels 8 selectable with an external 3 line select255 selectable via a serial interface32 random and 255 sequentialFrequency Stability ±2.5ppmSupply Voltage 5.5 - 15 VDCSupply Current TransmitReceive <100mA at 7.2 VDC< 40mA at 7.2 VDCDuty Cycle 100% maxInterface Connections Refer to Figure 1RF Connection Via PCB PinsSize 59.5 l x 38.5 w x 17.0 h mmWeight • 30gmsTemperature (operating) -25°C +55°CTemperature (storage) -30°C +80°CApprovals ETS 300 220, ETS 300 683, meets FCC & IC
Tactical Electronics Corporation4000 Dow Road Melbourne, Florida 32934Tel: (321) 253 0845 Fax (321) 253 6466 info@tacel.com 15 February 2000.TransmitterRF Output Power 100mW +1, -2 dB adjustable down to 1mWReceive to Transmit SwitchingTime <25msPower-on settling time <60msModulation Input Analog : 750 mV p-p nominalDigital: DC coupled TTL compatibleFrequency Response <10 - 3000 Hz flat (at -3dB)ReceiverSensitivity -115dBm/12dB SINAD at 25kHz channelspacingAF Output 250mV p-p into 10kS (muted by Squelch)RSSI Output 0.5 - 2.0V with 60dB range and 33kS o/pimpedanceSquelch Type Noise operated with hysteresis.Squelch Flag Open collector to <0.4V with 10kS load.Low = No Signal
RF Safety Information: This device is a radio frequency transmitter and receiver and as such emits radio frequency electromagnetic energy when transmitting. The FCC and international agencies have set forth guidelines regarding human exposure: USA FCC, Code of Federal Regulations: 47 CFR part 2 subpart J ANSI/IEEE C95.1-1992 and 1995. American National Standards Institute and Institute of Electrical and Electronic Engineers. National Council on Radiation protection and Measurements (NCRP) of the USA, Report 86,1986 Inernational Commission on Non-Ionizing Radiation protection (ICNIRP) 1998 Using FCC guidelines: The antenna gain maybe up to 13 dBd. Based on a 50% transmit time and maintaining a 21 cm distance from all persons.

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