Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

about PLL acquisition range and tracking range...

Status
Not open for further replies.

super

Full Member level 2
Joined
Aug 18, 2002
Messages
125
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,296
Activity points
904
acquisition range

Dear all:
In satellite PLL,
what is difference between acquisition Frequency range and
tracking Frequency range?

Thanks.
 

biff44

Advanced Member level 5
Joined
Dec 24, 2004
Messages
4,831
Helped
1,354
Reputation
2,704
Reaction score
1,031
Trophy points
1,393
Location
New England, USA
Activity points
36,482
pll tracking range and acquisition range

tracking range is wider than acquisition range, usually.
 

    super

    points: 2
    Helpful Answer Positive Rating

LvW

Advanced Member level 5
Joined
May 7, 2008
Messages
5,817
Helped
1,738
Reputation
3,478
Reaction score
1,337
Trophy points
1,393
Location
Germany
Activity points
39,035
site:www.edaboard.com pll

super said:
Dear all:
In satellite PLL,
what is difference between acquisition Frequency range and
tracking Frequency range?
Thanks.
As indicated by the words:
- tracking range is the frequency range which can be "tracked" by the locked PLL without loosing lock;
- acqu. range is the range in which the PLL can acquire lock (if it is out of lock),

(as BIF44 said: the first is much larger)
 

    super

    points: 2
    Helpful Answer Positive Rating

super

Full Member level 2
Joined
Aug 18, 2002
Messages
125
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,296
Activity points
904
tracking and lock range of the pll

1. It means tracking range is a lock-in range and
acquisition range is a Hold-in(capture) range ?

2. if I set frequency from lowest frequency
to highest frequency it will lock , is it a lock-in
range ?

3 How to set and measure capture range?

4. Why tracking range is large than acquisition range ?

5. What factor effect these two terms?
 

LvW

Advanced Member level 5
Joined
May 7, 2008
Messages
5,817
Helped
1,738
Reputation
3,478
Reaction score
1,337
Trophy points
1,393
Location
Germany
Activity points
39,035
tracking frequency of pll

super said:
1. It means tracking range is a lock-in range and
acquisition range is a Hold-in(capture) range ?

2. if I set frequency from lowest frequency
to highest frequency it will lock , is it a lock-in
range ?

3 How to set and measure capture range?

4. Why tracking range is large than acquisition range ?

5. What factor effect these two terms?
One should be careful with wording as different names are used frequently.
For my opinion the following is true:
1.) Tracking range identical to hold range (loop is and remains in-lock) and
acquisition range is identical to pull-in range (loop is unlocked, lock-in possible within pull-in time)
2.) This is the pull-in range. (Lock-in range means: Quick Lock-in within one beat cycle)

Answers to 3)...5) require much more detailed explanations/formulas. Try to find and read a good book.
 

    super

    points: 2
    Helpful Answer Positive Rating

super

Full Member level 2
Joined
Aug 18, 2002
Messages
125
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,296
Activity points
904
acquire pll track

LvW, could you kindly recommand some PLL textbook ?
i have one roland E. Best "Phase-Locked Loops",
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top