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

Need help in detemining the signal stength Coaxial Cable

Status
Not open for further replies.

viterbi

Member level 1
Joined
Jul 21, 2002
Messages
33
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
157
I want to develop a system which can measure the power level of each carrier ( Scale is 0- -150 db ) used for Tv Transmission.If there is any resources please let me know.And any working idea for the same is most welcome..
Thanks in advance
Vitebi
 

FANT

Advanced Member level 1
Joined
Feb 27, 2002
Messages
415
Helped
52
Reputation
104
Reaction score
37
Trophy points
1,308
Location
Italy
Activity points
3,646
POWER LEVEL MEASUREMENT

I think that any engineer would like to have a spectrum analyzer with 150 dB dynamic.
This is not possible due to the saturation of the active devices on one side and the noise on the other side.
If you need only to measure THE LEVEL of a signal not taking care about harmonics, other carriers, etc ( i.e. acting like a microwattmeter ) you can use analog devices AD8309; it is not expansive ( some free samples available from A.D. ) and very accurate with about 100 dB dynamic.
I have used it in the Matiaz Vidmar spectrum analyzer with very good results for my personal hobby and to measure the direct/reflected power from the coupled branchs on a directional coupler at work, with very good results.
You can have the data sheet on internet ; use the schematics from the data sheet, but take a lot of care on grounding ( it can self oscillate with nothing !!!! )
Hope to be helpful.
Bye
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top