[time-nuts] HP Z3801A on eBay -- And check this out as well

[Dr Bruce Griffiths]

Magnus Danielson wrote:
> From: Dr Bruce Griffiths <bruce.griffiths at xtra.co.nz>
> Subject: Re: [time-nuts] HP Z3801A on eBay -- And check this out as well
> Date: Sun, 21 Jan 2007 11:17:14 +1300
> Message-ID: <45B294EA.7060802 at xtra.co.nz>
>
> Dick and Bruce,
>
>   
>> Richard W. Solomon wrote:
>>     
>>>> If you have more than one GPS engine connected, how does it disable
>>>> the +5 vdc on the other receivers ? Or do you need to disable the
>>>> Preamp DC feed ?
>>>>
>>>> Thanks, Dick, W1KSZ
>>>>
>>>> ---
>>>>         
>> Dick
>>
>> 58517A accepts dc power from port 1 only or from the dc input connector.
>> See Symmetricom data sheet
>>
>> http://ngn.symmetricom.com/pdf/datasheets/ds-gps-active-splitters.pdf
>>     
>
> Well, I failed to have my Z3801A drive my 58517A over port 1. Appling 5V on the
> SMC connector on the 58517A solved the problem. The same Z3801A was feeding the
> active antenna with no problem just a few minutes before, so it is not an issue
> on the Z3801A.
>
> So, I recommend you to feed it on the SMC. That works very well for my GPSes.
>
> Cheers,
> Magnus
>
>   
Magnus

The dc input connector is optional, so maybe if you have a dc power 
connector then you cannot feed power via port 1.
The datasheet is not very clear on this.

Bruce