Circuit Design STD502R 2.4 GHz DSSS low power radio transceiver User Manual OG STD 502 R appr

Circuit Design, Inc. 2.4 GHz DSSS low power radio transceiver OG STD 502 R appr

User manual

OPERATION GUIDE.OG_STD-502-R_v09e Circuit Design, Inc.1Operation GuideVersion 0.9 (Feb. 2013)CIRCUIT DESIGN, INC.7557-1 Hotaka, AzuminoNagano 399-8303 JAPANTel: 0263-82-1024Fax: 0263-82-1016e-mail: info@circuitdesign.jphttp://www.circuitdesign.jp
OPERATION GUIDE.OG_STD-502-R_v09e Circuit Design, Inc.21. OutlineThe STD-502-R operates in the 2.4 GHz band available worldwide. Designed to be embedded inequipment, this radio transceiver module was developed for industrial applications that require stableand reliable operation. With battery operation, it achieves line of sight radio communication beyond300 m.Besides using highly noise-resistant direct-sequence spread spectrum (DSSS) modulation, themodule has a true diversity receiver function for preventing signal dropout due to multipath fading.This ensures highly stable and reliable radio communication in the congested 2.4. GHz ISM band.The transceiver uses a transparent input/output interface, enabling users to use their own protocols.In addition, the transceiver can transmit data that includes long consecutive identical bits that cannotbe transmitted with conventional radio modules.2. Features and applicationsFeaturesDirect sequence spectrum (DSSS)True diversity receivingCommunication range 300 m (LOS)Low power operation 10 mW, 3.3 V, 68 mAData rate 19.2 kbpsBuilt-in data frame coincidence detection functionOperating temperature range -20 to +65°CCompliance with European EN300 440, American FCC Part 15.247, and Japan ARIBSTD-T-66regulationsApplicationsRemote control of industrial equipmentIndustrial telemetry and monitoring systems
OPERATION GUIDE.OG_STD-502-R_v09e Circuit Design, Inc.33. SpecificationsGeneral specifications* All values are taken with the antenna ports terminated with 50 ohm and at 25 degree C +/- 5 degree C unless otherwisenotedItem Specification Unit RemarksApplicable standard EN300 440-1, FCC part 15.247,ARIB STD-T66Communication method SimplexEmission type Direct sequence spread spectrumModulation method FSKNumber of channels 77ch (Ch 0 to Ch 76)Antenna connection RP-SMAJDimensions 50 × 30 × 9 ( W x D x H ) mm RP-SMAJ and power & signalconnector pins excludedWeight 24 gInterface specificationsItem Specification Unit RemarksBaud rate: 19.2 kbps (typ.), No parityCharacter: 8 bits, Stop bit : 2 bitsBaud rate19.2 / 38.4 / 57.6 kbpsInput TXD L = 0 to 0.25H = Vref - 0.4 to Vref V UART *1Interface for modulesettingOutput RXDL = 0 to 0.25H = Vref - 0.4 to Vref V UART *1RX data output DO L = 0 to 0.25H = Vref - 0.4 to Vref VRX data out using a transparentmethod *1CLK for data input/output CLK L = 0 to 0.25H = Vref - 0.4 to Vref V*1TX data input DI L = 0 to 0.25H = Vref - 0.4 to Vref VTX data out using a transparentmethod *1Diversity receivingantenna DIV L = 0 to 0.25H = Vref - 0.4 to Vref VShows on which antenna data isreceived. *1TX/RX switching terminal TXRXSEL L = 0 to 0.3H = Vcc - 0.4 to Vcc V H: RX / L: TXRF standby terminal STBY L = 0 to 0.3H = Vcc - 0.4 to Vcc V H: Standby / L: RF operationReset terminal RST L = 0 to 0.25H = Vcc - 0.4 to Vcc V Reset with L for more than 100 usCommunication levelreference terminal VREF 3.1 - 5.5 VVref (a terminal for applying areference voltage consistent withthe external communication level)*1 " H" level depends on the voltage level applied to the communication level reference terminal.
OPERATION GUIDE.OG_STD-502-R_v09e Circuit Design, Inc.4Electrical specification (Common)Item Specification MIN TYP MAX Unit RemarksOperating voltage 3.3 5.5 VTX current Vcc = 3.3 V 66 mA at 10 mWRX current Vcc = 3.3 V 75 mATX/RX frequencyrange 2.4 GHz band 2402.5 2478.5 MHｚRefer to the frequencytableOperatingtemperature range -20°C to + 65°C -20 65 °C No dew condensationStoragetemperature range -30°C to +90°C -30 90 °C No dew condensationAging rate < +/- 1 ppm / year -1 1 ppm TX / RX Lo frequencyInitial frequencytolerance+/- 10 ppm within oneyear from shipment -10 10 ppm Transmission frequencyOscillation type Fractional N PLLcontrolled VCOFrequency stability +/- 10 ppm (-20 to +65°C) -10 10 ppm Reference temp. = 25 CChannel spacing 1 MHz 1 MHzData bit rate 19.2 kbps 19.2 kbps can be changed with thecommandChip rate 288 kcps 288 kcps can be changed with thecommandNumber of chips M-sequence(111101010001100) 15 bitPLL referencefrequency 26 26 MHｚTCXO : NT2520SAElectrical specification (Transmitter)Item Specification MIN TYP MAX Unit Remarks-10 to +55°C /all channels 10 mWOutput power -20 to +65°C /all channels 2 TBDSpurious emission TBD dBm EN300 440-1 compliantAdjacent channel power TBD dBc EN300 440-1 compliantOccupied frequencybandwidth TBD kHz EN300 440-1 compliantPower on -> command reception 42 ms Power on in the TX modeCommand reception -> TX 5 ms Country code reception ->stable RF outputFrequency change 3 ms Command transmission ->Stable RF outputRX to TX 2 ms Terminal input -> StableoperationActuationtimeRecovery from standby 1.2 ms Standby -> stable RFoutput
OPERATION GUIDE.OG_STD-502-R_v09e Circuit Design, Inc.5Electrical specification (Receiver)Item Specification MIN TYP MAX Unit RemarksReception method Low IFMaximum input level -13 dBmReceiver sensitivity(BER, 9.6 kbps) -20 to + 65°C /all channels -93 dBm error rate = < 1 %Receiver sensitivity(BER, 19.2 kbps) -20 to + 65°C /all channels -93 dBm error rate = < 1 %Blocking EN300 440-1 compliant -45 dBm 2 signal test, 1% errorSpurious radiation(1st Lo) dBmPower on -> County code reception 42 ms Power on in the RX modeCommand reception -> RX 5 msFrequency change 3 ms Command reception -> RXstartTX to RX 2 ms Terminal input -> StableoperationActuationtimeRecovery from standby 1.2 Standby -> RX start
OPERATION GUIDE.OG_STD-502-R_v09e Circuit Design, Inc.64. Terminal specificationsTerminal Terminal Input/ Input/Output level (V)No. name Output Low Hi Internal equivalent circuitOutput 0 to 0.25 Vref -0.4 to Vref1 CLKTX: Synchronous CLK for TX data inputRX: Synchronous CLK for RX data outputOutput 0 to 0.25 Vref -0.4 to Vref2 DIVThis terminal shows which of the two receivingterminals received the signal actually used for dataoutput. .DIV Data receivingterminalL RF inH RF in/outInput 0 - 0.25 Vcc -0.4 to Vcc3 RSTThe initialization terminal for coincidence detectionfunction*.The internal ASIC is reset with ‘L’ level for morethan 100 μs. Normally set this terminal to ‘H’.* For details of the frame coincidence detection function,refer to “Frame coincidence detection function” on page16.Input 0 to 0.25 Vref -0.4 to Vref4 TXDThe input terminal for serial communication.Settings for serial communicationBaud rate 19.2 kbpsCharacter bits 8 bitsParity noneStop bits 2 bitsTerminalLevelTranslatorTerminalLevelTranslatorTerminalLevelTranslatorTerminalLevelTranslator
OPERATION GUIDE.OG_STD-502-R_v09e Circuit Design, Inc.7Terminal Terminal Input/ Input/Output level (V)No. name Output Low Hi Internal equivalent circuitOutput 0 to 0.25 Vref -0.4 to Vref5 RXDThe output terminal for serial communication.Settings for serial communicationBaud rate 19.2 kbpsCharacter bits 8 bitsParity noneStop bits 2 bitsOutput 0 to 0.25 Vref -0.4 to Vref6 DOThe RX data output terminal.Outputs RX data in synchronization with the clockfrom the RX-CLK.The DO data should be read at the rising clockedge of the RX-CLKInput 0 to 0.25 Vref -0.4 to Vref7 DIThe TX data input terminal.Inputs TX data in synchronization with the clockfrom the TX-CLK.Data should be set to the DI at the falling clockedge of the TX-CLK.Input 0 - 0.3 Vcc -0.4 to Vcc8TXRXSELThe terminal for switching the TX mode and RXmode.Setting this terminal to ‘L’ enables the TX modeand setting to ‘H’ enables the RX mode.Input 0 - 0.3 Vcc -0.4 to Vcc9 NC Sets the STD-502-R into RF-standby state.Setting this terminal to L enables normal operationand setting to H enables RF-standby.RF-standby can be used to reduce the currentconsumption.Input 3.1 5.510 Vref The input terminal for interface reference voltage.Communication can be performed using thevoltage level applied to this terminal.TerminalTermin1MΩCPUTerminalLevelTranslatorLevelTranslatorLevelTranslatorTerminalTerminal1MΩCPU
OPERATION GUIDE.OG_STD-502-R_v09e Circuit Design, Inc.85. Frequency tableCHNo.Channel No.(Hex) Frequency [MHz] CHNo.Channel No.(Hex) Frequency [MHz]000 2402.5 39 27 2441.5101 2403.5 40 28 2442.5202 2404.5 41 29 2443.5303 2405.5 42 2A 2444.5404 2406.5 43 2B 2445.5505 2407.5 44 2C 2446.5606 2408.5 45 2D 2447.5707 2409.5 46 2E 2448.5808 2410.5 47 2F 2449.5909 2411.5 48 30 2450.510 0A 2412.5 49 31 2451.511 0B 2413.5 50 32 2452.512 0C 2414.5 51 33 2453.513 0D 2415.5 52 34 2454.514 0E 2416.5 53 35 2455.515 0F 2417.5 54 36 2456.516 10 2418.5 55 37 2457.517 11 2419.5 56 38 2458.518 12 2420.5 57 39 2459.519 13 2421.5 58 3A 2460.520 14 2422.5 59 3B 2461.521 15 2423.5 60 3C 2462.522 16 2424.5 61 3D 2463.523 17 2425.5 62 3E 2464.524 18 2426.5 63 3F 2465.525 19 2427.5 64 40 2466.526 1A 2428.5 65 41 2467.527 1B 2429.5 66 42 2468.528 1C 2430.5 67 43 2469.529 1D 2431.5 68 44 2470.530 1E 2432.5 69 45 2471.531 1F 2433.5 70 46 2472.532 20 2434.5 71 47 2473.533 21 2435.5 72 48 2474.534 22 2436.5 73 49 2475.535 23 2437.5 74 4A 2476.536 24 2438.5 75 4B 2477.537 25 2439.5 76 4C 2478.538 26 2440.5
OPERATION GUIDE.OG_STD-502-R_v09e Circuit Design, Inc.96. External dimensions
OPERATION GUIDEOG_STD-502-R_v09e Circuit Design, Inc.10Regulatory compliance informationRegulatory Statement for FCCThis device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:(1) This device may not cause harmful interference, and (2) this device must accept any interferencereceived, including interference that may cause undesired operation.Caution: Any changes or modifications not expressly approved by the party responsible for productcompliance could void the user's authority to operate the equipment.Note: This equipment has been tested and found to comply with the limits for a Class B digital device,pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection againstharmful interference in a residential installation. This equipment generates, uses and can radiate radiofrequency energy and, if not installed and used in accordance with the instructions, may cause harmfulinterference to radio communications. However, there is no guarantee that interference will not occur in aparticular installation. If this equipment does cause harmful interference to radio or television reception,which can be determined by turning the equipment off and on, the user is encouraged to try to correct theinterference by one or more of the following measures:—Reorient or relocate the receiving antenna.—Increase the separation between the equipment and receiver.—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.—Consult the dealer or an experienced radio/TV technician for help.Labeling:FCC ID: V9X-STD502RThe proposed FCC ID label format is to be placed on the module. If FCC ID is not visible when themodule is installed into the system, “Contains FCC ID: V9X-STD502R shall be placed on the outside offinal host system.Caution: Exposure to radio frequency radiationTo comply with FCC RF exposure compliance requirements, a separation distance of at least 20 cm mustbe maintained between the antenna of this device and all persons. This device must not be co-located oroperating in conjunction with any other antenna or transmitter, except in accordance with FCC multi-transmitter product procedures.AntennaOnly those antennas with same type and lesser gain filed under this FCC ID number can be used withthis device.The antenna used this module is as follows;Antenna Type & Antenna Gain;Sleeve Antenna, 2dBiLoop PCB Antenna, 1.89dBiCoaxial Antenna, 1.67dBiInstructions to OEM IntegratorsThe final system integrator must ensure there is no instruction provided in the user manual or customerdocumentation indicating how to install or remove the transmitter module.To comply with FCC RF exposure compliance requirements, a separation distance of at least 20 cm mustbe maintained between the antenna of this device and all persons. This device must not be co-located oroperating in conjunction with any other antenna or transmitter, except in accordance with FCC multi-transmitter product procedures.
OPERATION GUIDEOG_STD-502-R_v09e Circuit Design, Inc.11DoC and restrictions for CEHereby, Circuit Design, Inc., declares that this STD-502-R is in compliance with the essentialrequirements and other relevant provisions of Directive 1999/5/EC.This equipment is marked with the symbol and can be used throughout the European community.This indicates compliance with the R&TTE Directive 1999/5/EC and meets the relevant parts of followingtechnical specifications:EN 300 440-2, Electromagnetic compatibility and Radio spectrum Matters (ERM);Short range devices;Radio equipment to be used in the 1 GHz to 40 GHz frequency range; Part 2: Harmonized ENcovering the essential requirements of article 3.2 of the R&TTE DirectiveEN 301 489-17, Electromagnetic Compatibility and Radio spectrum Matters (ERM); ElectromagneticCompatibility (EMC) standard for radio equipment and services; Part 17: Specific Conditions forWideband Data and HYPERLAN Equipment.EN 60950-1, Safety of Information Technology Equipment.EN 62311, Assessment of electronic and electrical equipment related to human exposure restrictions forelectromagnetic fields (0 Hz-300 GHz).Remark:This module is for a portable application. The OEM integrator will need to conduct full EMC testing inaccordance with EN301 489-17 in the final use configuration.Caution: Exposure to radio frequency radiationThis device must not be co-located or operating in conjuction with any other antenna or transmitter.
OPERATION GUIDEOG_STD-502-R_v09e Circuit Design, Inc.12Important noticeCustomers are advised to consult with Circuit Design sales representatives before ordering.Circuit Design believes the provided information is accurate and reliable. However, Circuit Designreserves the right to make changes to this product without notice.Circuit Design products are neither designed nor intended for use in life support applications wheremalfunction can reasonably be expected to result in significant personal injury to the user. Any use ofCircuit Design products in such safety-critical applications is understood to be fully at the risk of thecustomer and the customer must fully indemnify Circuit Design, Inc for any damages resulting fromany improper use.As the radio module communicates using electronic radio waves, there are cases where transmissionwill be temporarily cut off due to the surrounding environment and method of usage. The manufactureris exempt from all responsibility relating to resulting harm to personnel or equipment and othersecondary damage.The manufacturer is exempt from all responsibility relating to secondary damage resulting from theoperation, performance and reliability of equipment connected to the radio module.CopyrightAll rights in this operation guide are owned by Circuit Design, Inc. No part of this document may becopied or distributed in part or in whole without the prior written consent of Circuit Design, Inc.CautionsDo not use the equipment within the vicinity of devices that may malfunction as a result of electronicradio waves from the radio module.Communication performance will be affected by the surrounding environment, so communication testsshould be carried out before actual use.Ensure that the power supply for the radio module is within the specified rating. Short circuits andreverse connections may result in overheating and damage and must be avoided at all costs.Ensure that the power supply has been switched off before attempting any wiring work.The case is connected to the GND terminal of the internal circuit, so do not make contact between the'+' side of the power supply terminal and the case.When batteries are used as the power source, avoid short circuits, recharging, dismantling, andpressure. Failure to observe this caution may result in the outbreak of fire, overheating and damage tothe equipment. Remove the batteries when the equipment is not to be used for a long period of time.Failure to observe this caution may result in battery leaks and damage to the equipment.Do not use this equipment in vehicles with the windows closed, in locations where it is subject to directsunlight, or in locations with extremely high humidity.The radio module is neither waterproof nor splash proof. Ensure that it is not splashed with soot orwater. Do not use the equipment if water or other foreign matter has entered the case.Do not drop the radio module or otherwise subject it to strong shocks.Do not subject the equipment to condensation (including moving it from cold locations to locations witha significant increase in temperature.)Do not use the equipment in locations where it is likely to be affected by acid, alkalis, organic agents orcorrosive gas.Do not bend or break the antenna. Metallic objects placed in the vicinity of the antenna will have agreat effect on communication performance. As far as possible, ensure that the equipment is placedwell away from metallic objects.The GND for the radio module will also affect communication performance. If possible, ensure that thecase GND and the circuit GND are connected to a large GND pattern.WarningsDo not take apart or modify the equipment.Do not remove the product label (the label attached to the upper surface of the module.) Using amodule from which the label has been removed is prohibited.

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