Communication Network Interface CNI-800D User Manual CNI800D Instruction

Communication Network Interface Inc. CNI800D Instruction

Contents

Installation instruction

CNI-800D Installation GuideFor OEM IntegratorVer. 1.1CNI-800DRadio Packet Modem1999.3.26.Communication Network Interface, Inc
CNI-800D Developer’s Guide1Table of Contentsn Modem Descriptions1. Overview2. Specifications and Features2.1Environmental Properties2.2 Electrical Properties3. Physical Dimensions4. Serial Interface between Application DTE5. Power Supply and Current Usagen Design Consideration1. Product Applications1.1 Use for Portable Terminal1.2 Use for fixed mountn Installation1. Mounting1.1 Fastening1.2 Groundingn Warning Label
2n Modem Descriptions1. OverviewCNI-800D enables digital data communication via DataTAC Network. This unitsupports Motorola’s RD-LAP 3.1& 3.2. And frequency band of 806-825 MHz forin-bounding, 851-870 MHz for out-bounding are available.This unit is two way wireless communication module that enables various Datacommunications between Hosts and Terminals. Support for automatic Roamingmakes it possible to communicate while moving around.By using Interface connector, this unit permits integration to various applicationswithout redesign and supports monitoring function.2. Specifications and Features2.1 Environmental properties2.1.1. Operation Temperature : -20°C ~ +50°C2.1.2. Storage Temperature : -35°C ~ +80°C2.1.3. Humidity : working properly 8 hours after storing at 95% relativehumidity, non-condensing circumstance2.2 Electric Properties2.2.1. General Specsa. Modulation : 4-level FSKb. Communication Mode : Half Duplexc. Transmission speed : 19,200bps2.2.2 RF Interfacea. Transmit Frequency : 806-825 MHzb. Receive Frequency : 851-870 MHzc. Channel Spacing : 25KHz2.2.3 Transmittera. RF output power : 1.0Wb. Frequency Stability : +- 1.0ppmc. Modulation Stability : +- 5% (-20°C ~ +50°C, 806 ~ 825 MHz)d. FM Deviation : 5.0 KHz +- 10%e. Spurious : less than 60dB f. Adjacent Channel leak : less than 60dB 2.2.4 Receivera. Sensitivity : -113 +- 3dBm (1% BER over all kind of data)b. Channel Selectivity : more than 55dB
CNI-800D Developer’s Guide3c. Intermodulation : more than 50dBd. Spurious Rejection : more than 60dBe. Image Rejection : more than 50dBf. Hum & Noise Ratio : less than 30dB
43. Physical Dimensions4-%4-%C2.4 (HOLE)19110.745.544.62208-R2.08.9 434.418 (2 X 9)2030.9TOP VIEW31.7+0.223.834.4(45.62)44030.9 (CONNECTOR)26.734.2 26.728.625.234 28.9215.51 1.8 34.22.3BOTTOM VIEW
CNI-800D Developer’s Guide54. Serial Interface Between Application DTEThis unit can be easily integrated into anywhere of the wireless modem adopteddevice.PIN ASSIGNMENTS1. RESET : External Reset2. TXD : Transmit Data3. PWRON : RPM Power On/Off4. RXD : Receive Data5. SENSE1 : Status Input 16. RTS : Request to Send7. SENSE2 : Status Input 28. CTS : Clear to Send9. SENSE3 : Status Input 310. DTR : Data Transmit Ready11. SENSE4 : Status Input 412. DSR : Data Set Ready13. MAGWAIT : Message Wait14. DCD : Data Carrier Datect15. INRANE : In Range Indicator16. RI : Ring Indicator17. LOWBATT : Low Battery18. 4.0V PWR : 4.0V Power Supply19. GND : Ground to Host20. 4.0V PWR : 4.0V Power Supply1192 20
63V3V3V3V3V3V3V3V3V3V3V3VCPU CPUCPU CPUCMOSCMOSCMOSCMOSRXDDCD-DSR-RI-CTS-TXDDTR-RTS-MSGWAIT-INRANGE-LOWBATT-SENSE1-4TxDA RxDAINDICATE SENSEPWRON CPURESET-INTERFACE CIRCUIT OF CNI-800D27 2710K10K330K10K10K27HOST HOSTHOSTHOSTHOST
CNI-800D Developer’s Guide75. Power Supply and Current Usage5.1 Example of Power Supply from out-source : input Voltage 4V±10%,more than 1.1 A5.2 Current UsageTX : 1.1ARX : 70mASt-By : 30mAAverage Current Usage in Standby Mode is about 30.6mAn Design ConsiderationsTo integrate a wireless modem, there are several issues that need to be addressed and considered. Internalconnections and placement are critical to a successful implementation. A successful design requiresattention to several support mechanisms as following:- DC Power- Serial interface and control- Mechanical mounting- Software- Antenna- RF control44V to 7V 4V5V 4VDetermine Ratio of R1 & R2by Input VoltageRPM POWER INPUTRPM POWER INPUTCASE 1CASE 2LM317I3O2A1R1R2100uF+104+100uF+104+D?DIODE100uF+104+
81. Production ApplicationsThe OEM wireless modem is well suited for mobile and fixed applications. The wireless modem enablesuser to send/receive data anytime anywhere, and can provide communications for a wide variety ofproducts. 1.1 Portable Terminal UsePortable designs produce good environment for an integrated modem. The portable terminal istypically battery powered, subject to temperature extremes, and designed to be physicallystrong. When designing portable device, user needs to pay attention to the following issue:- DC power noise levels on the host interface- Minimum operating voltage levels- Device internal ambient temperature- Antenna gain and proximity to user- Mechanical design for drop, vibration, dust, salt and liquid spill.Note : Regarding this last point, CNI-800D modem is designed on the assumption that the host devicewill control these conditions.1.2 Fixed Mount UsageFixed-mount usage eliminates most of the mechanical constraints of handheld designs. Thecore requirement applies, but fixed usage does not present any special conditions to address.n InstallationInstalling CNI-800D modem is very simple as follows:1. Place the modem to connector on product housing, and apply a little force to push it down to beconnected.Caution : Care not to bend or damage the connector pins.2. Use four #2-56 UNC 2A machine screws to tie up the modem as the figure shown below.3. Connect modem connection cable to a small hole provided at the rear of the modem.4. Connect the modem connection cable to Antenna1. MountingProper mounting of the modem requires a combination of securely fastening it within the product housingas well as adequately grounding the modem case to the housing.1.1 FasteningMount the modem to the rigid OEM product housing by using four #2-56 UNC 2Amachine screws as the figure shown below:
CNI-800D Developer’s Guide91.2 GroundingFor CNI-800D modem, the pin number 19 of connector on the modem isground pin. So if user properly place the modem, ground is automaticallydone.n Warning LabelFollowing warning label shall be attached on the devices using CNI-800D modem.While this device is in operation, a separation distance ofat least 20 centimeters (7.87 inches) is maintained betweenradiating antenna and the body of the user or nearby personsin order to meet the FCC RF exposure guidelines.

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