Home
JAQForum Ver 24.01
Log In or Join  
Active Topics
Local Time 08:26 28 Nov 2024 Privacy Policy
Jump to

Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.

Forum Index : Microcontroller and PC projects : Preamble length when using RF modules....

Author Message
Grogster

Admin Group

Joined: 31/12/2012
Location: New Zealand
Posts: 9308
Posted: 02:36pm 27 Aug 2013
Copy link to clipboard 
Print this post

Hi folks.


Is there any kind of rule as to how many bytes of preamble you send when using "Dumb" RF transmitter/receiver sets?

In my current experiment, I am using 10x "U" characters, to sync the data-slicer in the receiver, and that is working just fine.

So my questions are should I be using more then ten bytes? Would more then ten sync bytes increase reliability etc? One would think that more preamble bytes will give the receiver more time to sync the data-slicer, and so in theory, should be more reliable.

...or is that false logic?

How many sync bytes do others here use?

TX/RX pair are Radiometrix NTX2/NRX2, the 10kbps version.
Baud-rate is 2400.

As I say: everything is working 100%, I am just curious as to if I perhaps should be using more preamble bytes or not.
Smoke makes things work. When the smoke gets out, it stops!
 
Print this page


To reply to this topic, you need to log in.

© JAQ Software 2024