CNI-800D Developer’s Guide Table of Contents Modem Descriptions 1. Overview 2. Specifications and Features 2.1Environmental Properties 2.2 Electrical Properties 3. Physical Dimensions 4. Serial Interface between Application DTE 5. Power Supply and Current Usage n Design Consideration 1. Product Applications 1.1 Use for Portable Terminal...
Modem Descriptions 1. Overview CNI-800D enables digital data communication via DataTAC Network. This unit supports Motorola’s RD-LAP 3.1& 3.2. And frequency band of 806-825 MHz for in-bounding, 851-870 MHz for out-bounding are available. This unit is two way wireless communication module that enables various Data communications between Hosts and Terminals.
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CNI-800D Developer’s Guide c. Intermodulation : more than 50dB d. Spurious Rejection : more than 60dB e. Image Rejection : more than 50dB f. Hum & Noise Ratio : less than 30dB...
CNI-800D Developer’s Guide 4. Serial Interface Between Application DTE This unit can be easily integrated into anywhere of the wireless modem adopted device. PIN ASSIGNMENTS 1. RESET : External Reset 2. TXD : Transmit Data 3. PWRON : RPM Power On/Off 4.
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I N TER F A C E C I R C U I T O F C N I -800D R X D D C D - C P U TX D D S R - C P U D T R - R I - R T S - C TS-...
CNI-800D Developer’s Guide Power Supply Current Usage 5.1 Example of Power Supply from out-source : input Voltage 4V±10%, more than 1.1 A CASE 1 LM317 44V to 7V RPM POWER INPUT 100uF 100uF Determine Ratio of R1 & R2 by Input Voltage...
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 device will control these conditions. 1.2 Fixed Mount Usage Fixed-mount usage eliminates most of the mechanical constraints of handheld designs.
CNI-800D Developer’s Guide 1.2 Grounding For CNI-800D modem, the pin number 19 of connector on the modem is ground pin. So if user properly place the modem, ground is automatically done. n Warning Label Following warning label shall be attached on the devices using CNI-800D modem.
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