657009

Raymarine RAY 106 Manual

23
Zoom out
Zoom in
Previous page
1/47
Next page
SECTION 4
TECHNICAL DESCRIPTION
4.1 GENERAL
The RAY106 can be considered as consisting of two major sections.
• The Control Section (consisting of the front panel controls, LCD display, and CPU).
• The Transmitter/Receiver / PLL Section.
4.2 THE CONTROL SECTION
The heart of the control section is the CPU, which is IC101 located on the CPU PCB. The
CPU controls all of the following items :
• Controls the Squelch circuit by detecting a busy signal from the 2nd IF circuit IC101 on the
Main PCB.
• Generates a beep tone when a key is activated on the keyboard.
• Mutes the transmitter modulation circuit when receiving.
• Controls the output power of the transmitter High/Low.
• Controls the dividing ratio N of the PLL circuit.
• Switches ON/Off the transmitter power.
• Mutes AF audio.
• Detects a weather alert signal (when in Monitor Mode).
• Controls the LCD display.
4.3 THE TRANSMITTER/RECEIVER/PLL SECTIONS
In reading through the following circuit descriptions, it may be helpful to refer to Figure 4-1
Block Diagram of the TX/RX/PLL circuits.
4.3.1 PLL (Phase Lock Loop) Circuit
The PLL circuit is oscillating the standard frequency with the PLL IC ( IC3 ) and 12.8MHz
crystal filter XTL1. This is divided into 1/512 in the IC3 to make 25KHz reference frequency.
RF output from VCO unit ( VCO1 ) will be input to PLL IC ( IC3 ) pin8 via buffer amplifier Q10.
The dividing ratio data stored in the CPU IC101 will be output to pin10 and clock signal will be
output to pin9 of the PLL IC ( IC3 ). And when the chip enable signal is input to pin11 of PLL
IC ( IC3 ) the dividing ratio data will be latched to the PLL IC ( IC3 ). The phase of the
frequency which is a input frequency to the PLL IC ( IC3 ) divided by the CPU stored dividing
radio and the 25KHz reference frequency is compared correlated to control voltage by charge
pump transistors Q11, Q12. That is input to the pin of VCO unit ( VCO1 ).
… 23 …


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Raymarine RAY 106 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Raymarine RAY 106 in the language / languages: English as an attachment in your email.

The manual is 0,69 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info