[time-nuts] HP-10811AB-OCXO interface questions

[DM]

Manfred, 
The 05328-20027 part number is the HP part number for the bare PCB used in the A3 assembly 05328-60027 interface board. You can find the schematic for that assembly in the manual for the militarized version of the 5328A (AN/USM-459) at [ https://radionerds.com/images/9/9a/TM_11-6625-2941-14%26P.PDF | https://radionerds.com/images/9/9a/TM_11-6625-2941-14%26P.PDF ] and the associated manual [ https://www.liberatedmanuals.com/TM-11-6625-2941-24P.pdf. | https://www.liberatedmanuals.com/TM-11-6625-2941-24P.pdf. ] . 

Cheers, 
Dave M 


From: "Manfred Bartz" <vk3aes at gmail.com> 
To: "Discussion of precise time and frequency measurement" <time-nuts at lists.febo.com> 
Sent: Wednesday, September 2, 2020 12:24:21 AM 
Subject: [time-nuts] HP-10811AB-OCXO interface questions 

Hi all, 

I bought 2 x 10811 OCXOs for a 10MHz GPSDO project I am working on. 
The OCXOs came with an interface board HP 05328-20027, see attached 
pictures. 

Questions: 
1. Is it worth keeping the interface board? 
a. If yes, does anyone have the schematic and the data on the ICs? 
b. What is that TO220 device? and 
c. why is it mounted on a standoff on the back of the PCB? 
2. Any advice/caution on matching the OCXO output impedance? 
3. Any recommendation for a (>= 4-ch) distribution amplifier? 
4. Any advice on a low jitter comparator for further digital processing, 
e.g. for a 1pps signal? 

Thanks and 73 
-- 
Manfred VK3AES 

_______________________________________________ 
time-nuts mailing list -- time-nuts at lists.febo.com 
To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com 
and follow the instructions there.