[time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812A GPSDO system

Tom Miller tmiller11147 at verizon.net
Fri Oct 31 22:41:21 EDT 2014

Task 1 complete.

Pin-1  ->  Pin-15
Pin-2  ->  Pin- 14
Pin-3  ->  Pin- 13
Pin-14 ->  Pin- 2
Pin-15  -> Pin-1

Shell -> Shell


----- Original Message ----- 
From: "Bob Camp" <kb8tq at n1k.org>
To: <n1jez at burlingtontelecom.net>; "Discussion of precise time and frequency 
measurement" <time-nuts at febo.com>
Sent: Friday, October 31, 2014 8:27 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, 
Z3810A,Z3811A, Z3812A GPSDO system

> Hi
> I suspect that somebody will have to figure out what the 15 pin connector 
> / jumper is doing. On previous RFTG units there was a way to re-wire the 
> crossover interface to fake out the slave detect process. That would let 
> you run a single GPS equipped box and have it behave correctly. Without 
> the fake wires trick none of them played nice without the slave being 
> present.
> Yes that seems like it violates the spirit of redundancy. No I didn’t 
> design it. Yes the guy who did spec it to work that way probably knew a 
> whole lot more about exactly what they were after in the design.
> I suppose the first task would be to figure out if the jumper cable is a 
> straight through or not….
> Bob

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