ds8000-1 dec 02 ? 2002 reg no 277 4001, england. page 1 s y nthesised radio modules tx8000/RX8000 features ? no operating licence required. ? 32 selectable rf channels. ? range 10-20km line of sight 1-3km in buildings ? rf frequency range: 400.00 mhz to 490.00 mhz 860.00 mhz to 930.00 mhz in 1.3mhz bands ? rf power output 5mw to 500mw ? data rates: up to 10kpbs ? tx8000 transmitter power 7.5 at 270ma ? RX8000 receiver power 5v at 35ma ? approvals: etsi 300-220, mpt1329 ? size 36mm by 51mm by 14.5mm description the synthesised tx8000 transmitter and RX8000 receiv er can be set to one of 32 switch selectable rf frequencies. the modules can transmit data at 10kbps fo r a distance of up to 20km line of sight and 1-3km in buildings. the radios are ideal for general telemetry applications . the tx8000 will transmit analogue data such as fsk, ffsk, gmsk and pwm from its analogue input or accept dire ct ttl digital data from its digital input. the RX8000 will receive analogue and digital data and present it to its analogue and digi tal outputs in the same format as it was transmitted. the units conform to etsi 300-220 and etsi 300-683. typical operation
ds8000-1 dec 02 ? 2002 reg no 277 4001, england. page 2 s y nthesised radio modules tx8000/RX8000 specification absolute maximum ratings storage temperatur e............................................... -30 to +85 celsius operating temper ature ........................................... -25 to +55 celsius dimensions length = 36mm width = 51mm height = 14.5mm electrical characteristics min typical max dimension note frequency range 458.500 485.950 mhz uk 400.000 490.000 mhz world 860.000 930.000 mhz world channels 1 channel separation 12.5 25.0 25.0 khz factory start up time 3.0 5.0 7.0 msecs modulation f3d transmitter rf output power 5.0 500.0 mw analogue input 0.5 vp-p mod. digital input 3.5 4.7 5.0 v ttl power supply 7.2 8 10.0 v 270.0 290.0 390.0 mamps receiver sensitivity -112 dbm 10dbsin ad analogue output 2.0 vp-p +/-5khz digital output 5.0 v ttl power supply 5.0 5.5v 12 v 12.0 15.0 18.0 mamps note: switch mode power supplies can produce rf frequencie s that will interfere with the receiver signal. part no. description tx8000.xxx transmitter x xx = rf frequency band RX8000.xxx receiver xxx = rf frequency band radio propagation with any radio system there are a number of factors which affect the system performance. these are: transmitter power output. height of transmitter and receiver antenna. length and type of coaxial feeder cable to the antenna. type and efficiency of the antenna. topography between transmitter and receiver. the weather. antenna x603 quarter wave antenna low cost, mobile, omni-directional, short range approximately 2km x604 mast mounted dipole antenna omni-directional, base station, range approximately 10km x605 high gain yagi antenna directional beam of 40, range approximately 10-20km, usually used on receivers only.
ds8000-1 dec 02 ? 2002 reg no 277 4001, england. page 3 s y nthesised radio modules tx8000/RX8000 transmitter connections: pins on underside of module pin description direction 1 ground input 2 3 4 digital data input (ttl) input 5 switched +5v output 6 7 regulated +5v output 8 transmitter on (connected to ground to start the transmitter) input 9 supply voltage to module (7.2 - 10v) input 10 receiver rf output (for use in transceiver) output 11 ground input 12 antenna output receiver connections: pins on underside of module pin description direction 1 ground input 2 receiver signal strength indicator (rssi) output 3 demodulated output output 4 5 power supply input 6 digital data output output 7 power supply (5 to 12v) input 8 antenna output mechanical details tx8000 2.54 2.54 2.54 2.54 2.54 2.54 2.54 2.54 2.54 2.54 3.81 36 42 52 2 2 2 2 9 RX8000 13.97 2.54 2.54 2.54 2.54 2.54 2.54 36 42 52 2 2 2 2 9 all dimensions in mm
ds8000-1 dec 02 ? 2002 reg no 277 4001, england. page 4 s y nthesised radio modules tx8000/RX8000 circuit connections note: on the standard RX8000, pins 4 & 5 are not present. therefore the pins are numbered 1 to 7 rf frequency an example of how the rf frequency is set using t he programming pins is shown below. the frequency band can be factory set in the range 400.00mhz to 490.00mhz and 860.00mhz to 930.00mhz at 12.5khz or 25khz spacing in bands of 1.3mhz. note: each country has different rules a nd regulations on the use of rf spectrum. r r . . f f . . s s o o l l u u t t i i o o n n s s l l t t d d . . , , u u n n i i t t 2 2 1 1 , , c c l l i i f f f f e e i i n n d d u u s s t t r r i i a a l l e e s s t t a a t t e e , , l l e e w w e e s s , , e e s s u u s s s s e e x x , , b b n n 8 8 6 6 j j l l , , e e n n g g l l a a n n d d t t e e l l + + 4 4 4 4 ( ( 0 0 ) ) 1 1 2 2 7 7 3 3 8 8 9 9 8 8 0 0 0 0 0 0 f f a a x x + + 4 4 4 4 ( ( 0 0 ) ) 1 1 2 2 7 7 3 3 4 4 8 8 0 0 6 6 6 6 1 1 h h t t t t p p : : / / / / w w w w w w . . r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k e e m m a a i i l l s s a a l l e e s s @ @ r r f f s s o o l l u u t t i i o o n n s s . . c c o o . . u u k k r r f f s s o o l l u u t t i i o o n n s s i i s s a a m m e e m m b b e e r r o o f f t t h h e e l l o o w w p p o o w w e e r r r r a a d d i i o o a a s s s s o o c c i i a a t t i i o o n n . . information contained in this document is believed to be accurate, however no representation or warranty is given and rf soluti ons ltd. assumes no liability with respect to the accuracy of such information. use of rf solutions? products as critical comp onents in life support systems is not authorised except with ex press written approval from rf solutions ltd. hex rf freq ch mhz pin 1 pin 2 pin 3 pin 4 pin 5 00h 458.500 low low low low low 02h 458.525 high low low low low 04h 458.550 low high low low low 06h 458.575 high high low low low 08h 458.600 low low high low low 0ah 458.625 high low high low low 0ch 458.650 low high high low low 0eh 458.675 high high high low low 10h 458.700 low low low high low 12h 458.725 high low low high low 14h 458.750 low high low high low 16h 458.775 high high low high low 18h 458.800 low low high high low 1ah 458.825 high low high high low 1ch 458.850 low high high high low 1eh 458.875 high high high high low hex rf freq ch mhz pin 1 pin 2 pin 3 pin 4 pin 5 20h 458.900 low low low low high 22h 458.925 high low low low high 24h 458.950 low high low low high 26h 458.975 high high low low high 28h 459.000 low low high low high 2ah 459.025 high low high low high 2ch 458.050 low high high low high 2eh 458.075 high high high low high 30h 458.100 low low low high high 32h 458.125 high low low high high 34h 458.150 low high low high high 36h 458.175 high high low high high 38h 458.200 low low high high high 3ah 458.225 high low high high high 3ch 458.250 low high high high high 3eh 458.275 high high high high high
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