[time-nuts] GPSDO vs Rb standard

[Bob Stewart]

Understood.  If I do anything, it will probably be to cut pins 8 and 9 at the board side of the connector and route the serial connections there.  I dislike opening this thing up any more often than I have to.  Thanks for all the info.

Bob





>________________________________
> From: Bob Camp <lists at rtty.us>
>To: Discussion of precise time and frequency measurement <time-nuts at febo.com> 
>Sent: Friday, September 20, 2013 5:34 PM
>Subject: Re: [time-nuts] GPSDO vs Rb standard
> 
>
>Hi
>
>All of my FE Rb's have serial out of a 9 pin D connector. They bring power (+15 and +5) in on that connector, and put 1 pps and 10 MHz out on the same 9 pin D.
>
>There are (apparently) dozens of variations of the FE 5680. There is no single standard for what is hooked up where. I'd be *very* careful about playing with wires I had not either traced out or had data from the seller on. It's *very* easy to blow one of these beasts up. 
>
>On mine serial is normal RS-232 levels on pins 8(rx) and 9(tx). 15 V power is on pin 1, ground on pins  2 and 5, +5 power is on pin 4. 
>
>Outputs are on 6 (pps), 7 (10 Mhz), 3 (lock). 
>
>Again - I'd be *very* careful with information that may or may not apply to your specific Rb.
>
>Bob
>
>
>On Sep 20, 2013, at 5:25 PM, Bob Stewart <bob at evoria.net> wrote:
>
>> Bob, 
>> 
>> 
>> Does your Rb send the serial out on the DB-9, or did you solder in a connection?  I'm looking at mine and it looks like pin 8 is connected to something and pin 9 seems to come in to an empty SMT slot for a cap or resistor.  I was thinking of bringing a ribbon cable out between the covers above the DB-9, but maybe I should just take over 2 pins on the DB-9?  Any ideas what the pins 8 and 9 would have been hooked up to if they don't go to the serial input?
>> 
>> 
>> Bob
>> 
>> 
>> 
>> 
>>> ________________________________
>>> From: Bob Camp <lists at rtty.us>
>>> To: Discussion of precise time and frequency measurement <time-nuts at febo.com> 
>>> Sent: Wednesday, September 18, 2013 7:25 PM
>>> Subject: Re: [time-nuts] GPSDO vs Rb standard
>>> 
>>> 
>>> Hi
>>> 
>>> When I want to tune an Rb, I just hook up to it with a terminal program and hack away at it. There's not a lot to the protocol.
>>> 
>>> Bob
>>> 
>>> 
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