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

Tom Miller tmiller11147 at verizon.net
Fri Oct 31 12:42:59 EDT 2014


I thought so too. There is an ultracap in each unit.


Tom

----- Original Message ----- 
From: "Mike Seguin" <n1jez at burlingtontelecom.net>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Friday, October 31, 2014 12:19 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, 
Z3811A, Z3812A GPSDO system


>I have both of my units sitting on the bench. I found that I needed to 
>connect them together to get the REF1 unit to come out of standby.
>
> I am using GPSCon to monitor and it appears to work fine.
>
> One thing on my units, when I power cycled them, it started a 'survey' 
> over! I didn't expect that. Are others seeing this. There must be a way to 
> store the surveyed position....
>
> Tnx,
> Mike
>
> On 10/30/2014 3:59 PM, Bob Stewart wrote:
>> Hi Anthony,
>> Did you power cycle both units as part of connecting them together at J5 
>> to J5?  And can you remind me whether you are using the supplied 
>> interface cable, or are you using something else?  After warmup, the ON 
>> light is on for the REF-0 unit and the STBY light is on for the REF-1 
>> unit.  While running, there is no output from J8 on the unit marked STBY. 
>> J8 works on the unit marked ON.  There is a timestamp coming from J6, and 
>> I think a 1PPS signal on some pin or other.
>>
>> Bob     From: Anthony Roby <aroby at antamy.com>
>>   To: Discussion of precise time and frequency measurement 
>> <time-nuts at febo.com>
>>   Sent: Thursday, October 30, 2014 2:24 PM
>>   Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, 
>> Z3810A, Z3811A, Z3812A GPSDO system
>>
>> I'm still having no luck with mine.  When I power on, the LEDs cycle, the 
>> Fault light is on and the No GPS and Standby lights flash.  When I 
>> connect my GPS antenna, the No GPS light stops flashing and stays on. 
>> After several minutes only the Standby light is on.
>>
>> When I connect both the Ref1 and Ref0 together with the interface cable, 
>> the Fault lights on both units are illuminated.
>>
>> Do you see the same?  I don't know what to infer from the Fault light 
>> since there is no supplemental data to work from.
>>
>> Anthony
>>
>>
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>
> -- 
>
> 73,
> Mike, N1JEZ
> "A closed mouth gathers no feet"
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