OK, well it looks like the taps are needed for the proper operation of this device. I will just get a TADD1. Thanks for the input.
--- Bill Janssen <[EMAIL PROTECTED]> wrote: > John Ackermann N8UR wrote: > > jshank said the following on 02/18/2008 03:05 PM: > > > >> Jamie, > >> > >> If you have the Spectracom 8140 you need to use > the line taps. With out > >> using the line taps you sinewave will not be > symmetrically along 0 voltage, > >> that is the sine wave will all be positive > voltage. > >> > > > > I'm not certain about that; while I haven't used > an 8140 amplifier, I > > have an 8164 WWVB disciplined oscillator that has > an option installed to > > allow it to run a string of 8140T taps. I was > able to use those outputs > > directly by using a series cap to isolate the DC > voltage; what's left is > > the 10 MHz sine wave. As I noted in my other > post, it does want to see > > a 50 ohm load (after the isolating cap) or the > fault indicator may go > > on. I suspect the 8140 amp is very similar; > Spectracom did a lot of > > design reuse across their products. > > > > John > Be careful with that termination. If the output has > 12 volts DC you > would need an isolating cap. > The Line Taps were intended for a production line > where the taps could > just be plugged in > and would get their power from the coax. Some were > made that had a power > jack and those > could be powered from a "wall transformer". > > Bill K7NOM > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ____________________________________________________________________________________ Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
