Thread: Discussion Another new 2.4GHz system!
View Single Post
Old Aug 10, 2009, 11:08 AM
ReSt is offline
Find More Posts by ReSt
Registered User
Joined Jul 2009
661 Posts
Quote:
Originally Posted by dghutt
My voltmeter suggests a clue: the radio is only delivering 2.1 volts to the IC, although I'm getting 5.2v at the radio's "trainer" outlet, so I think something is backwards or mis-wired. I'll report here if further investigation doesn't get me anywhere.

Dave
Hi Dave,

plug in your circuit at the trainer port.
Don't switch on the TX, leave it powered off.
Setup your voltmeter to measure resistance. Use the lowest range (e.g.200 Ohm).

Measure the resistance

from pin2 at the port to pin 16 of the IC

from the solderpoint at the port, that corresponds to ground or -5Volt (black wire) to pin 15 of the IC

Both readings should be nearly 0 Ohm.

If one measure shows a higher value, that is probably your problem.

Reinhard
ReSt is offline Find More Posts by ReSt
Reply With Quote