MARO_RF_BD1 (CHARISMA BOARD)
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1 CONTENTS MARO BD (CHARISMA BOARD) What is a module? What is the MARO BD (CHARISMA BOARD)? BiM-UHF TX, RX CHARISMA USER MANUAL. POWER SUPPLY. Antenna Connection. Module Attachment. Mode setting (BiM module only). TX. RX 7. Others PARTS LIST SCHEMATIC What is a module? A (Radio Frequency) module is a compact component used for wireless radio communication. In this case, radio frequency refers to a general electric wave and not only a radio broadcasting frequency. modules can be classified by frequency, modulation method, data, output strength, etc. modules are frequently used when precise wireless applications are necessary. What is the MARO BD(CHARISMA BOARD)? The Charisma board converts RS serial data to data and vice versa. The Charisma board can easily be connected to equipment with a RS port. The Charisma board is designed to accept Radiometrix( BiM, TX, or RX modules. PC to PC communication is possible if both PCs have Charisma boards connected. BiM-UHF The BiM-8-F and BiM--F are miniature UHF radio modules capable of half duplex data transmissions at speeds up to 0 Kbit/s over distances of 0 meters in-building and 0 meters over open ground. Single.V to.v power supply is required.
2 Frequency Speed Distnace Radiated Power Receive Sensitivity Power Whip Antenna BiM-8-F 8.00 MHz 0K bps 0~0 m - dbm -07 dbm.~. V. cm BiM--F.9 MHz 0K bps 0~0 m - dbm -07 dbm.~. V. cm Table BiM two-way module Warning: Do not adjust the trimmer on the module. It controls the receive frequency and can only be correctly adjusted using an accurate signal generator. Figure BiM module TX, RX The TX and RX data link modules are a miniature PCB mounting UHF radio transmitter and receiver pair which enable the simple implementation of a data link at up to 0 Kbit/s at distances up to 7 meters in-building and 00 meters open ground..v and V version are available.
3 TX RX Frequency Speed Distance Radiated Power 8.00 MHz.9 MHz 0K bps 7~00 m - dbm 9 dbm Receive Sensitivity Power Whip Antenna.0~.0 V. cm. cm 8.00 MHz.9 MHz 0K bps 7~00 m -00 dbm.0~.0 V. cm. cm Table TX, RX one-way module Warning: This table is for the V version. If V or greater is supplied, the radiated power increases, however, government regulatory permission is required. RX has two speed versions: -A(low speed, Kbit/s), -F(high speed, 0Kbit/s). This table refers to the -F version. Figure TX
4 Figure RX CHARISMA USER MANUAL. POWER SUPPLY The Charisma board uses a single DC V power source. Power can be supplied via three methods: DC V to the JP7 port. 9V battery to the JP port. DC ~V adapter to the J port. You must use only one of the above. If a DC adapter is used, and the LED D does not light, change the polarity of the plug. The Charisma board has a power cut-off diode, which prevents damage due to incorrect polarity. Refer to Figure for the polarity of other power ports.
5 Figure Silkscreen Power Port V JP7 ~V adapter J 9V battery Table Power supply JP Warning : Use only one method.. Antenna Connection Refer to the module data sheets for proper antenna connection. If a whip antenna is desired,
6 connect it to the right side of the JP terminal block. Refer to previous tables for proper antenna length.. Module Attachment Only one BiM, TX, or RX can be used at a time. BiM module uses the M socket. TX module uses the M socket. RX module uses the M socket. Warning: All modules have polarity.. Mode setting(bim module only) BiM modules are two-way communication modules. To select transmission or reception mode, a software or hardware method can be used. The software method uses the RTS (No. pin of the JP) pin of the RS port. The hardware method uses a jumper block. Refer to Table. Jumper Setting Mode, Reception, Software Method Empty Transmission Table JP Jumper setting. Note: JP has no relation to the TX or RX modules. If the software method is used, use a -wire serial cable with the JP instead of the JP. Figure Serial Cable. TX Insert the TX module into the M socket. Ignore the JP.
7 . RX Insert the RX module into the M socket. Solder the JP(SMD jumper) to make a connection. Ignore the JP. 7. Others 8 MHz and MHz are UHF(Ultra High Frequency). BiM and TX use SAW controlled FM transmission. BiM and RX are double conversion FM superhet receivers. BiM and TX or RX can communicate each other, when they use the same frequency. Basic constraints that any serial code must satisfy for reliable transfer. T(Pulse width time): us < T < ms Preamble(for RX settling): The AFC and data slicer in the receiver require at least ms of '0000' preamble to be transmitted before the data at the RXD output may be considered reliable. Increasing this time to ms will give increased immunity to interference. Mark/Space ratio: The data slicer in the receiver is optimized for data waveforms with 0:0 Mark:Space averaged over any ms period. The slicer will tolerate sustained asymmetry up to 0/70 (either way), however, this will result in increased pulse width distortion and decreased noise tolerance. Packet will be used for communication. A packet is a wrapping data with rule. This is a recommended packet format. preamble more than ms FFh (FFh) Start byte (0h) data bytes CRC or Check Sum Table Packet example Note: Preamble can be made using series of h or AAh data. cf) h = 0000B, AAh = 0000B => 0:0 Mark:Space ratio. FFh : To find start bit. (FFh) : Optional. Start byte : Your own start byte. (0h) : Optional. data bytes : Series of FFh or 00h might cause a problem. Because their Mark:Space ratio is not proper. 7h, Bh, Dh, Eh,...Eh, h,...87h,8bh... values will be fine. Refer to the data sheet for more information. CRC or Check Sum : Optional. There are several Charisma board communication program at or
8 PARTS LIST Item Quantity Reference Part C 0uF C 0 C,C,C,C,C9 uf C7,C8 0 D N00 D,D LED 7 JP 7-8 JP 0-9 JP 0-0 JP P PIN HEADER JP SMD JUMPER(NO REAL PART) JP BR00(TERMINAL BLOCK) JP7 0- J JACK M 9 x PIN HEADER SOCKET M P SIP P SIP 7 M P SIP P SIP 8 Q N90 9 R,R.K Ohm 0 R 00K Ohm R 0K Ohm R 7K Ohm T,T,T TEST PIN U 78L0 U 7HC U 7HC00 7 U MAX(or replacement) 8 JUMPER BLOCK 9 ANTENNA 0 RUBBER SUPPORTER SERIAL CABLE(OPTIONAL) PCB
9 8 7 UE UD T TEST T TEST T TEST ITXD TXDC D JP HEADER JP HEADER RXD TXD C uf C uf IRXD RXD T_IN T_OUT 0 RTS T_IN T_OUT 7 RXD ITXD TXD TXD IRTS R_OUT R_IN 9 8 RTS R_OUT R_IN U C C C- C- MAX V V- C C uf uf ANTENNA JP HEADER 7HC UC 7HC R 0K IRTS JP JUMPER_ TXDC RXDC <JP> NO : TRANSMIT - : RECEIVE D 7HC - : RTS CONTROL C 9 M BIM RX TX TXD AF RXD CD TXDC RXDC R 00K RXDC UB 7HC UA 7HC00 C 7HC 0 R.K UA IRXD C M TX D LED TXD B JP7 HEADER C9 uf C7 0 C8 0 TXDC B J JACK D U 78L0 IN OUT M RX CD AF RXD N00 C 0uF D LED R.K 7 RXDC A JP HEADER Q N90 R 7K UF 7HC UB 7HC00 JP SMD JUMPER A Title MICROROBOT CO., LTD CHARISMA Size Document Number Rev E n 8 7 Date: Sheet of 0
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