From hglent at frii.com  Thu May 28 11:32:38 2015
From: hglent at frii.com (Paul  K.)
Date: Thu, 28 May 2015 11:32:38 -0400
Subject: [GPS_Standard] ??? pin out info HP10544A TCXO
Message-ID: <55673516.1040201@frii.com>

I am about to put together the VE2ZAS, 10MHz Frequency Standard.  I am 
confused about the connections on the HP TCXO. Am I supposed to have 
connection to Pins 8 & 9, Oven Controller? If so, what and where do they 
connect?

Thanks

-- 
Paul K. WA0BAG

From w0ep at w0ep.us  Thu May 28 12:38:31 2015
From: w0ep at w0ep.us (Chris Howard w0ep)
Date: Thu, 28 May 2015 11:38:31 -0500
Subject: [GPS_Standard] ??? pin out info HP10544A TCXO
In-Reply-To: <55673516.1040201@frii.com>
References: <55673516.1040201@frii.com>
Message-ID: <55674487.9090301@w0ep.us>


according to this:

http://www.leapsecond.com/museum/10544/1972-Oct-hp-10544A.pdf

you can connect pin 9 to ground (pin 2) and pin 8 to pin 3 through an inductor.
(Figure 3, decoupling Filter)



On 5/28/2015 10:32 AM, Paul K. wrote:
> I am about to put together the VE2ZAS, 10MHz Frequency Standard.  I am confused about the connections on the HP TCXO. Am I supposed to have connection to Pins 8 & 9, Oven Controller? If so, what and where do they connect?
> 
> Thanks
> 

From dplatt at radagast.org  Thu May 28 12:39:20 2015
From: dplatt at radagast.org (Dave Platt)
Date: Thu, 28 May 2015 09:39:20 -0700
Subject: [GPS_Standard] ??? pin out info HP10544A TCXO
In-Reply-To: <55673516.1040201@frii.com>
References: <55673516.1040201@frii.com>
Message-ID: <41712DFA-F5F7-4B43-9A8D-B40B97A3573E@radagast.org>



> I am about to put together the VE2ZAS, 10MHz Frequency Standard.  I am confused about the connections on the HP TCXO. Am I supposed to have connection to Pins 8 & 9, Oven Controller? If so, what and where do they connect?

See the info at

http://www.leapsecond.com/museum/10544/1972-Oct-hp-10544A.pdf

Yes, you do need to connect these pins.  The simplest connection would be
pin 9 to ground, pin 8 to the same regulated DC supply voltage that you
feed to pin 3.  The HP document suggests that it's better to have some
noise filtering between pins 3 and 8.