Checking on this and anything you get is a very good idea. - Someone could have opened it up and added/deleted parts, in this case +5V on one of the ports that is suppose to be just a 200 ohm load. - Could have been a factory special with knows what configuration. - and so on ....
On Sat, Nov 29, 2014 at 10:13 AM, Bob Stewart <[email protected]> wrote: > Hi, > I suggest that you use a DVM to see which ports are getting power. Better > yet would be to disconnect everything and use an ohm-meter to see which ports > are electrically connected. If you can't satisfy yourself that you know > what's what, then contact GPS Source. They are very good people to deal > with. I've got an MS-14 that had two powered ports plus the powered antenna > port, plus it can be internally powered. I asked them about it, and they > gave me instructions on how to de-power one of the ports. It was just a > matter of removing a 000 shunt resistor and adding a 200 ohm load resistor. > The way I read the product description is that the "pick and choose" likely > means it has the same type of construction that mine does. A 000 resistor > bypasses a blocking cap for power transfer ports, and you have to add a 200 > ohm 1W (ex: CRCW2512200RJNEG) if you depower a port. But, contact them. > They'll fix you right up. > By the way, if your ports are labeled, PDC = powered DC and BDC = blocked DC. > > Bob - AE6RV > From: cfo <[email protected]> > To: [email protected] > Sent: Saturday, November 29, 2014 1:53 AM > Subject: [time-nuts] LTE-Lite and - S14WI 1x4 GPS splitter > > Gents > > I have a S14WI GPS antenna splitter w. Opt : > Amplified + DC Bias Select + Ant Current monitor > > It's connected to a Maxrad 40dB "ice cone timing antenna" > > DS for the spliter here > http://www.amtechs.co.jp/2_gps/pdf/S14WI_spec.pdf > http://tinyurl.com/nfmpyqm > > > Currently i have this connected : > Port1 : Tbolt > Port2 : Z3810A > Port3 : Reserved KS Lucent (Waiting for TNC->BNC adapter) > Port4 : Reserved for LTE-Lite (hope to connect today) > > Port3/4 have a 50ohm (BNC ethernet terminator) on right now > > As i read the DS , the splitter currently used the antenna power from > Port1, to power the antenna, and Port2 is terminated w. 200ohm. > > I'm a bit unsure about the DS , but as i read it it will isolate Port4 > from the antenna DC , as it draws power from Port1 (Tbolt) > > The LTE-Lite is 3v3 , and wouldn't like to get 5v on it's antenna. > > > If anyone could have a quick glance , and verify my assumptions i'd be > gratefull. > > TIA > CFO -Denmark > > > > -- > E-mail:[email protected] > > _______________________________________________ > 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. > > > > _______________________________________________ > 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. _______________________________________________ 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.
