Excellent Paul! Many thanks for taking the time to prepare this data for
me. I've no idea which variation mine is, but I guess I can assume (for
now) that it doesn't require an external timebase because there's only one
connector on the back.
I'll hook up power and see what happens. As soon as the smoke clears I'll
let you know the outcome. Heh.
Again many thanks.
Chuck
WA5MUV
-Original Message-
From: Paul Nelson [mailto:drhy...@qwest.net]
Sent: Thursday, May 21, 2009 11:29 PM
To: time-nuts@febo.com; Robert Atkinson; Charles Rushing; Bill Hawkins
Subject: Re: time-nuts Digest, Vol 58, Issue 51
Well, I found some stuff on this clock... from a few handwritten notes I
made several years ago, there exist both types; those that have an
internal timebase, and those that require an external timebase. The
clock that I can put my hands on right now is an A15586; I have a couple
more. The timebase is an E13832-P1, and it consists of a TCXO with an
output frequency of 983.040 Hz and a couple of chips (CD4013 and CD4020)
which output a two-phase square wave signal at 60 Hz to drive the
stepper motor inside the clock. Basic wiring is as follows- there are
usually two connectors on the clock, one of which matches the connector
on the timebase- a 12-pin circular connector, MS27034H12B12PN. The
other, larger, connector is for the ARINC bus stuff.
I've had all of mine working with that timebase.
If your clock has an internal timebase, it should work simply by
powering it with 24v on pins 3 and 4. I don't know which ones do and
which ones don't- there's a whole bunch of variations.
PinClockTime base
15v lightingn/c
25v lightingn/c
3+16to32v --- +16to32v
4 -16to32v ----16to32v
5Case gnd Case gnd
6Ph 1 drive sig in ---Ph 1 drive sig out- capt clock
7Ph 2 drive sig in ---Ph 2 drive sig out- capt clock
8Ph 1 drive sig out-
F/O clock
9Ph 2 drive sig out-
F/O clock
10 Ph 1 drive sig out-
F/E clock
11 Ph 2 drive sig out-
F/E clock
12 spare
time-nuts-requ...@febo.com wrote:
Message: 2
Date: Thu, 21 May 2009 17:50:33 + (GMT)
From: Robert Atkinson robert8...@yahoo.co.uk
Subject: Re: [time-nuts] 747 Chronometer
To: crus...@ieee.org, Discussion of precise time and frequency
measurement time-nuts@febo.com
Message-ID: 240600.56920...@web27104.mail.ukl.yahoo.com
Content-Type: text/plain; charset=iso-8859-1
Hi Charles,
I had a dig, but could only find info on the current clocks that receive
time info on an ARINC 429 serial bus, and an earlier hybrid LCD / mechanical
model that needs an external 1PPS (I'd like one of those).
I've never seen an aircraft clock that needed an external 60Hz signal.
Unfortunatly Hayden have been bought up and no longer list instruments. Keep
Googling!
Robert G8RPI
--- On Thu, 21/5/09, Charles Rushing crushin2...@austin.rr.com wrote:
From: Charles Rushing crushin2...@austin.rr.com
Subject: [time-nuts] 747 Chronometer
To: time-nuts@febo.com
Date: Thursday, 21 May, 2009, 7:45 AM
Greetings To All,
Please accept my apologies in advance if this is
off-topic.? I have just
acquired an aircraft clock, which I've tentatively
identified as coming from
a Boeing 747.? It's way cool looking and would make a
perfect dust collector
in my ham shack if I could only power it up.
There is a multi-pin military-style twist-lock connector on
the back, but no
indication of what the pinout may be.? The unit is
identified as:
CLOCK, 3 24 HOUR GMT ELECTRONIC
MFD BY A.W. HAYDON CO. PRODUCTS
NO. AMER. PHILIPS CONTROLS CORP.
Cheshire, Conn.
MFR'S. PT. NO. A15551-P1
I've searched the Net for technical documentation, but
could only find the
reference to the 747.? Does anyone have any
information about these clocks,
or can someone point me in the right direction?
Many thanks in advance.
Chuck
WA5MUV
--
Paul Nelson W5GNF When I go, I want to go quietly, in my
Ames, Iowa sleep, like my grandfather- not
Senior Engineer (Retired) screaming, like his passengers.
Sauer-Danfoss Company
(drhy...@qwest.net)
More hay, Trigger?
ex-Cessna 140 N77149 (sigh) No thanks, Roy, I'm stuffed.
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