At 12:10 16/08/02 +0100, you wrote:
Dear LF Group,
A while ago, I got a 10MHz OCXO reference - one of CARC's surplus goodies.
It is a Piezo Systems model 2810007-1, and appears to be a clone of the
HP10811 references. I have the pin-out for the HP unit, but I remember
G3JKV mentioning that these units had a slightly different pin out from
the HP original - does anybody know what the difference is?
Hi Jim,
Pin 1 is next to the little hole in the tagboard.
1 = Osc out.
2 = Osc ground
3 = +24v
4 = 24v grd
14 = Oven +24v
15 = Oven grd.
They are fast warmup so take 600 mA at 24v for the first 15 mins or so then
drop to 80-100 mA.
The changeover is very sudden so I suspect it has a dual high/low power heater
Walter G3JKV.
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.381 / Virus Database: 214 - Release Date: 02/08/02
|
