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27

 

Transmission section characteristics

Item

Rating

Conditions

Transmitter type

PLL synthesizer

  

RF output power

9.0mW

1.0mW

10mW

Frequency stability

4ppm

-10 to +55

C

<-60dBm

<1GHz

Spurious emission

<-50dBm

>1GHz

Deviation

1.9 to 2.1KHz

*1

S/N ratio

>25dB

*1

Adjacent channel power

>40dB

Spectrum analyzer act, *1

Carrier sense level

-107dBm

Fixed

Transmitter start-up time

<30msec

PLL data setting

<15msec

25KHz

Channel switching time

<30msec

100KHz

*1: 9,600bps, 511bit (Pseudo Noise)

 

Receiving section characteristics

Item

Rating

Conditions

Receiver mode

Double super heterodyne

Sensitivity

<-117dBm

25

C, *2

Spurious response

>45dB

*3

Selectivity

>45dB

*3

Local frequency stability

4ppm

-10 to +55

C

<-65dBm

<1GHz

Radiation from local oscillator

<-60dBm

>1GHz

Output level

350mVp-p

100kohms terminate *4

Carrier sense level

-113dBm

Fixed

Carrier sense response time

<30msec

PLL data setting

<15msec

25KHz

Channel switching time

<25msec

100KHz

1 x 10

-2

Less than -110dBm

Bit error rate

1 x 10-4

Less than –107dBm

*2: AF=1kHz, fmod=2kHz, CCITT filter ON
*3: Jamming waves AF=400Hz, fmod=40%
*4: Dev:=2kHz,AF=1kHz
*5: 2556bit / 4800bps

Содержание STD-402TR

Страница 1: ...uto Mode Operation Guide Version1 1 February 1999 CIRCUIT DESIGN INC International Business Division 7557 1 Hotaka Hotaka machi Minamiazumi Nagano 399 8303 JAPAN Tel 0263 82 1010 Fax 0263 82 1016 web...

Страница 2: ...serve this may result in the outbreak of fire overheating and damage to the equipment Remove the batteries when the equipment is not to be used for a long period of time Failure to observe this may re...

Страница 3: ...l processes 2 automatic link 8 Explanation for internal processes 3 ID number registration 9 Explanation for internal processes 4 encoder 10 Explanation for internal processes 5 decoder 11 Explanation...

Страница 4: ...i directional transmissions transmitter receiver but support for simplex communications bi directional is planned for the future Features The automatic link function automatically connects to channels...

Страница 5: ...a new type of module 1 Automatic link The automatic frequency selection function consists of the Automatic Channel Search and the Automatic Link functions 1 The Automatic Channel Search is a system th...

Страница 6: ...Programmable Encoder FSK DATA CLK LOAD Automatic Link Controller CPU DATA OUT Receiver FSK DATA CLK LATCH CPU STD 402 RX MODE 1 Automatic Link 2 Programmable Encoder Decoder 433 200 434 775MHz 25kHz...

Страница 7: ...g mode 2 Set at channel 0 433 200MHz 3 The carrier level is detected and compared with the standard level 4 If the channel is occupied the frequency is increased by two channels 50kHz 5 If the channel...

Страница 8: ...r is set at channel 0 433 200MHz 3 The carrier level is detected and compared with the reference level The reference level is different for the transmitter and receiver 4 If it is below the standard l...

Страница 9: ...erent ID number the receiver will continue to search the channels until it finds an ID number that matches its own 0001 Serial NO 0001 ID Register 0001 Transmitter Receiver Serial NO 0002 ID Register...

Страница 10: ...ication protocols to convert the automatic link ID numbers the various control data and the transmitted data into FSK data The entire data is called as a frame and the transmission data is inserted on...

Страница 11: ...1 7 Timing chart The timing for the STD 402 RX mode is shown below The micro computer built into the STD 402 is equipped with a decoding function and communication protocols to convert the received F...

Страница 12: ...ansmitting data between Transmitter and receiver The communication data is transmitted continually during transmission However the transmission data will not actually travel continuously at 4 800bps o...

Страница 13: ...eral for RS232C communication LD CLK D IN D OUT LD CLK D IN LD CLK D IN Switch input Analog input Digital input AD converter module Parallel input module 74HC165 LE CLK D IN LE CLK LE CLK D OUT Relay...

Страница 14: ...STD 402 is not equipped with these switches and LEDs If space or cost restrictions prevent the installation of the above mentioned hardware it is necessary to make circuit or equivalent board Ensure t...

Страница 15: ...ting switch input and status output The LD port is the status output port Refer to Ports for further details on each port LE CH5 STD 402 10 12 Mode switch Setting switch LD 9 LED Oscilloscope CPU port...

Страница 16: ...g switch 3 Release the setting switch 4 Commence the built in micro computer settings 5 Receive the setting data from the transmitter DATA rate is automatically set by the setting data 6 The LD port w...

Страница 17: ...is run 6 The LD port will blink L and H in 0 3 second cycles if a disconnection is detected Recheck the connections and perform the settings again 7 The LD port will blink L and H in one second cycle...

Страница 18: ...following procedure 1 Set the CH5 port to OPEN manual mode 2 Switch on the power supply while pressing the setting switch 3 Release the setting switch 4 Make the settings in the direct mode 5 The LED...

Страница 19: ...llustration below and as the port is pulled up with resister the switch must be connected to the GND The setting switch can only be pressed when the power supply is switched on A communications error...

Страница 20: ...D 402 auto mode Local ID numbers must be set for each of the receivers for identification purposes The ID numbers are set with the CH0 to CH5 ports The LD L reset signal is output and the data is clea...

Страница 21: ...ports and performing the task manually or performing control by connecting into the micro computer port Use the method that best suits the application Refer to the table for the CH0 to CH5 port settin...

Страница 22: ...D GND OPEN GND GND 27 28 OPEN GND GND GND OPEN OPEN 28 29 OPEN GND GND GND OPEN GND 29 30 OPEN GND GND GND GND OPEN 30 31 OPEN GND GND GND GND GND 31 32 GND OPEN OPEN OPEN OPEN OPEN 32 33 GND OPEN OPE...

Страница 23: ...st MIX RX VCO TX VCO LPF TX POWER AMP PLL IC 1st IF BPF TX RX ANT SW 2nd MIX 2nd IF DET LPF 21 25MHz AF RSS 2nd OSC T R LE CH0 CH2 CH3 CH1 CH5 CH4 CPU DI VCC GND LPF REGULATOR LD RDY CLK 2 7V CAR STAT...

Страница 24: ...ltage 3 AF O The AF output of the receiving section 4 DO O The data output from decoder section The port uses FET buffer output the H level is Vcc 5 T R I TX transmit mode RX receive mode setting The...

Страница 25: ...0 LE I O The LATCH ENABLE signal output for external serial parallel register Setting mode switch input 11 RDY CLK O Serial data shift CLK signal output The data is shifted when the clock rises 12 13...

Страница 26: ...range 433 200 434 775MHz Channel step 25KHz Number of RF channel 64 channels Baud rate 4800 9600bps FSK Modulation polarity Positive Demodulation polarity Positive Antenna impedance 50 1st IF 21 7MHz...

Страница 27: ...600bps 511bit Pseudo Noise Receiving section characteristics Item Rating Conditions Receiver mode Double super heterodyne Sensitivity 117dBm 25 C 2 Spurious response 45dB 3 Selectivity 45dB 3 Local fr...

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