Don't be afraid and open up your MV89. I have done this with many MV201 without problems.
On Thu, Feb 9, 2012 at 8:25 AM, Sam <li...@digitalelectric.com.au> wrote: > I just powered up one of my MV89A's and measured ~7 dBm into my HP 8920B, > but as Tom has mentioned some MV89A's develop > a dry joint around the output bypass capacitor > http://www.hellocq.net/forum/showthread.php?t=283551 > > What is the date and revision number on yours? I have 2 here 07/34 and > 07/31 both Rev 3 bought from fluke.l > > > Sam > > > > Got my replacement FE-5680 and a MV89 in from Nichegeek. I figured > > I'd better power up and check the MV89 before I let 'em know > > everything was ok. The MV89 is warming up nicely, the current is > > down to 290 mA (and still dropping), but the output seems low; about > > 40 mV RMS as measured on a scope with a 10Meg 10x probe. (Datasheet > > spec is +7 +/- 2 dBm.) The output is too weak to reliably trigger my > > 5345A counter. > > > > The reference voltage measures 4.90 VDC. > > > > If anyone can make a quick measurement on their MV89, I'd appreciate it. > > > > > > thanks! > > newell N5TNL > > > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.