[time-nuts] Lucent RFTFm-II-XO

Chris Waldrup kd4pbj at gmail.com
Tue Sep 13 23:44:24 EDT 2016


Hi,

Regarding the Lucent box- I wanted to let everyone know that once it locked to satellites, I have a 10 MHz out. 
The output was a square wave with some ringing, but I built a three element low pass filter and now I have a really nice 10 MHz sine wave. 
Thanks to all!

Last question.... I see it has a RS-422 output on one of the connectors. If I build or buy a 422 to 232 converter can I expect to be able to view the unit's data output with something like Lady Heather or Tboltmon? Or at least see an output with Hyperterminal?

Thank you. 

Chris
KD4PBJ

> On Sep 6, 2016, at 16:42, Bob Camp <kb8tq at n1k.org> wrote:
> 
> Hi
> 
> One might *think* a redundant system would work fine with the plug yanked. 
> In this case …. nope. It needs to have a dummy connector on it to get the device
> running. I agree that this is an “interesting” way to do it. Regardless of that, they
> did the units need the signals from the other box (or fake signals)  before they 
> will do useful stuff.
> 
> Bob
> 
> 
>> On Sep 5, 2016, at 10:22 PM, Bill Hawkins <bill.iaxs at pobox.com> wrote:
>> 
>> Fake connections? Isn't a redundant system supposed to allow one box to
>> be disconnected?
>> 
>> Bill Hawkins 
>> 
>> -----Original Message-----
>> From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Bob
>> Camp
>> Sent: Monday, September 05, 2016 8:20 PM
>> To: Discussion of precise time and frequency measurement
>> Subject: Re: [time-nuts] Lucent RFTFm-II-XO
>> 
>> Hi
>> 
>> If you only have one box, you need to be sure the "fake" connections on
>> the interconnect are correct. If they are not, you will not get it to
>> operate correctly. 
>> 
>> There also is a survey process if you have not had it running in your
>> location before. That could take a few hours to a few days depending on
>> your antenna.
>> 
>> Bob
>> 
>> 
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