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.
Pin Clock Time base
1 5v lighting n/c
2 5v lighting n/c
3 +16to32v -----------> +16to32v
4 -16to32v -----------> -16to32v
5 Case gnd ------------> Case gnd
6 Ph 1 drive sig in ---> Ph 1 drive sig out- capt clock
7 Ph 2 drive sig in ---> Ph 2 drive sig out- capt clock
8 Ph 1 drive sig out-
F/O clock
9 Ph 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 +0000 (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."
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
