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Raymarine Limited. Registered in England. Company no. 1177969

Page 10

Registered Office: Anchorage Park, Portsmouth P03 5TD

RAY 240 RF PCB Block Diagram

PLL

Reference

Oscillator

Clock

155.000 MHz -
165.000 MHz

133.600 MHz -
141.875 MHz

APC Circuit

High/Low
Power

155.000 MHz -
163.275 MHz

LNA

Filter

Tuning

21.4 MHz

16.9 MHz

16.445 MHz

139.625 MHz

20.945 MHz

Transmitter

Receivers

Channel

Selectable

Receiver

CH70

Receiver

litter

Noise

Switch

Tx/Rx

Data

Lock

VCO Tx/Rx

Adjust 1
Adjust 2
Adjust 3

VCO C. Tune

Filter

Tuning

Filter

Tuning

Filter

Tuning

D/L

Ref

Tune

CH70 2nd

LO Tune

AC 2nd LO

Tune

CH70 1st LO

Tune

Analogue signal from on

board D/A converter

Analogue signal from

Processor board

Digital signal

FM Detector

Attenuator

Содержание Ray240

Страница 1: ...aymarine Limited Registered in England Company no 1177969 Registered Office Anchorage Park Portsmouth P03 5TD Raymarine Limited RAY 240 VHF Radio Technical Description FCC ID PJ5RAY240 IC 4069B RAY240...

Страница 2: ...RAY 240 Transceiver Unit Interconnection Diagram 4 Processor and Interconnect PCBs Block Diagram 5 Processor and Interconnect PCBs Circuit Description 6 RF PCB Block Diagram 10 RF PCB Circuit Descript...

Страница 3: ...V Power 4 PTT 7 Audio to Handset 6 Audio from Handset 5 0V Power Type DC PS DD DD PS AA AA 6 5 4 3 2 1 7 8 Handset 1 5552 003 1 Comms 8 Screen Circular Connector 8 way Female 3 Mute Pin Function 2 12V...

Страница 4: ...2V PS 4 0V PS 5 12V PS 6 0V PS 7 12V PS 8 0V PS 9 12V PS 10 0V PS 11 12V PS 12 0V PS 13 HAILER PA 14 HAILER PA 15 HAILER PA 16 HAILER PA 17 NMEA OUT DC 18 NMEA OUT DC 19 0V PS 20 0V PS 21 NMEA IN DC 2...

Страница 5: ...im_3 trim_4 trim_5 trim_6 trim_7 Radio Trim Filters all_ch_trim_0 all_ch_trim_1 all_ch_trim_2 all_ch_trim_3 ch70_trim_0 ch70_trim_1 ch70_trim_2 ch70_trim_3 Seatalk 2 CAN Seatalk 1 NMEA0183 UART Interf...

Страница 6: ...the interconnect board The battery supply is protected with a 10A automotive style fuse in the positive line located on the interconnect board and accessible without removing the transceiver cover In...

Страница 7: ...switching block routes audio signals between the talkers and listeners in the system the talkers are the audio sources i e handset microphones radio receivers hailer microphone amplifier FSK modulator...

Страница 8: ...icroncontroller s UARTs Discrete PTT signal that directly indicates when the PTT switch on the handset is pressed Discrete mute signal to the active speaker mutes the speaker in transmit mode In addit...

Страница 9: ...ted by the microcontroller is routed to the power amplifier The standard tone is a square wave whistle but provision is also made to generate a bell sounding tone Telephone Interface The telephone int...

Страница 10: ...MHz LNA LNA Filter Tuning 21 4 MHz 16 9 MHz 16 445 MHz 139 625 MHz 20 945 MHz AF Transmitter Receivers Channel Selectable Receiver AF CH70 Receiver Splitter Noise Noise Switch Switch Tx Rx Tx Rx Data...

Страница 11: ...ransmitter Transmitter Frequency Range 155 00 to 165 00 MHz with 25 kHz channel spacing Transmitter Output Power 25 Watts switchable to 1 Watt Modulation Frequency modulated at 16F3 4 5 kHz at 1kHz Re...

Страница 12: ...e the receiver is not damaged when the radio is transmitting at 25 Watts the switch has a high degree of isolation between the transmitter and the receiver The antenna terminal of this switch is conne...

Страница 13: ...receiver These filters are designed to attenuate two different frequencies The 2nd image frequency of the receiver is attenuated by this filter which is defined as Nominal frequency of the receiver 2x...

Страница 14: ...lock Diagram M IC R O PH O N E M IC R O PH O N E PR EAM PLIFIE R ALC AM PLIFIER 3 3V 1 2V N O M IN AL M IC R O PH O N E SPEAKER AU D IO AM PLIFIER AU D IO IN C O M M U N IC ATIO N S IN TER FAC E cont...

Страница 15: ...l result if the LED s are lit Micro controller The micro controller is a Texas Instruments MSP430F135 This is a very low power 16 bit micro controller with 16kBytes of Flash memory and 512 Bytes of RA...

Страница 16: ...ficient for the second stage The first stage also applies pre emphasis to the signal as required for transmission of audio signals over an FM radio link The second stage comprises an automatic level c...

Страница 17: ...e handset is attached to the cradle Distress Button The distress button is used to send DSC distress messages It is monitored directly by a separate processor pin so that s its operation cannot be mas...

Страница 18: ...1177969 Page 18 Registered Office Anchorage Park Portsmouth P03 5TD RAY 240 Active Speaker Block Diagram PO TEN TIO M ETER SW ITC H M O D E SW ITC H IN G C IR C U ITS M U TE ALAR M ALAR M O VER R ID E...

Страница 19: ...d or fully charged nominal 12V lead acid battery up to inadvertently connecting the unit to a 24V system The amplifier used in the Active Speaker is thermally protected from overload and output short...

Страница 20: ...e placed into STANDBY mode when the switch is in its off position irrespective of the level on the mute pin In standby mode there is no output from the amplifier The mute mode is also overridden by th...

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