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1. TD-2400MD Function
TD-2400MD is the compact size digital radio developed for supporting safety and convenience in
leisure, restaurant, superstores and public area.
No needed license because the operation is in ISM band.
Furthermore, communication range and audio quality are more improved than analogue radios.
TD-2400MD Radio's main features are as follows;
Scalable Data Rate : 500Kbps and 1Mbps
Audio Sampling Rate : 8Kbps
PLL synthesizer type
Signal Strength Meter
Battery Status Indicator
USB PC Programming
Various Parameters and PC downloading methods
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Summary of Contents for YEONHWA M TECH TD-2400MD
- Page 1 1. TD-2400MD Function TD-2400MD is the compact size digital radio developed for supporting safety and convenience in leisure, restaurant, superstores and public area. No needed license because the operation is in ISM band. Furthermore, communication range and audio quality are more improved than analogue radios.
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Page 2: Circuit Description
Circuit Description TD-2400MD digital radio is consisted of RF module included MG2455, RF AMP to amplify output power, LED Display that shows condition of drive chip and Data modem which supports RS-232C after transforming from Digital signal into serial signal. - Page 3 3) Hardwired MAC • Two 256byte circular FIFIs • FIFO management • AES-128 Engine • CRC-16 Computation and check • 4) I8051-Compatible Microcontroller • Max 12x Performance of standard 8051 • 96KB Embedded Flash Memory • 8KB Data Memory • 128-byte CPU dedicated Memory •...
- Page 4 Figure 2. MG2455(U11) Block Diagram 2. RF Power AMP(U13) SKY65348(U13) is a high performance, Transmit/Receive(T/R) Front-End Module (FEM) ideally suited for use in 2.4 GHz Industrial, Scientific, and Medical (ISM) applications. A Double-Pole, Double-Throw (DPDT) switch allows antenna diversity and is used to select between receive and transmit data paths.
- Page 5 Applications • IEEE 802.15.4 radios • Advanced metering infrastructure • ISM systems Figure 2. SKY65348(U13) Block Diagram 3. RS-232C Transceiver Chip(U15) The SP3232E(U15) is an RS-232 transceiver solution intended for portable or handheld applications such as notebook or palmtop computers. The SP3232E(U15) series has a high-efficiency, charge-pump power supply that requires only 0.1μF capacitors in 3.3V operation.
- Page 6 Regulator(U12) D-Sub connector(CON2). This is also used for input power of U16 which makes DC+3.0V power. Regulator(U13) turns DC+4V power into DC+3.0V to supply power to MG2455 ZigBee Chip(U11), RS-232C Transceiver Chip(U15), EEPROM(U14) and other circuits 5. EEPROM(U14) Saves various channel information and Parameter required in operating to TD-2400MD.
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Page 7: Specification
Specification Frequency Range Frequency Tolerance ±5ppm Occupied B.W 2MHz Output Power 7 dBm VSWR 2.0 : 1 Flatness < 1㏈ Spurious Emissions 1GHz Under <-30 dBm 1GHz~2.4GHz <-30 dBm ~12GHz <-30 dBm Harmonic <-45 dBm Harmonic <-70 dBm Inband Spurious <-45 dBm Adjacent Channel Rejection ±3.5MHz >40 dBc... - Page 8 1. RS-232C 9 Pin Specification Male D-Sub Connector Description Specification GPIO1 TTL (DC+3.3V) RX Data RS-232C TX Data RS-232C GPIO2 TTL (DC+3.3V) Ground Ground GPIO3 TTL (DC+3.3V) RS-232C RS-232C DC+5.0V Input Voltage...
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Page 9: Fcc Information To User
FCC Information to User 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 against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.