A software update of my a small monitor for Trimble Thunderbolt, named
tbolt2lcd, is available from:
http://www.romahn.info/tbolt2lcd/
It does handle week rollover sins 30-Jul-2017 correctly (I hope).
Götz
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hello to all,
to put things right into perspective please note that the famous OCXO
hp10811 is "only" specified with harmonics <25 dB (see page 11 of manual
https://www.febo.com/pages/hp10811/HP10811AB-Manual.pdf).
This device is but still often felt to be useful.
Goetz
Am 22.01.2017 um
bo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
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Götz Romahn
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s@febo.com
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and follow the instructions there.
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is that the recording clock may not be accurate, so
if all you know is the start time, your error bars grow as you move down the
file.
Recording IRIG on another channel is the best suggestion I've seen.
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@Juerg,
try swapping the lamp module. This worked with my two PRS10
Goetz
Am 22.02.2015 um 16:44 schrieb Jürg Kögel:
Fellow time nuts. I have two SRS PRS10 Rb’s that I did purchase 10 years
ago. Both have been working for the last nine years. One did fail last year
and I finally got around to
my monitor ( see http://www.romahn.info/tbolt2lcd/ ) also shows leap
sec pending. This info is from Thunderbolt.
Götz
Am 23.01.2015 um 04:38 schrieb Didier Juges:
Re: Note that this is not a GPS problem, nor a Trimble problem. It's just
a problem with user written software.
I agree with
Loïc,
I bought this one
http://www.kessler-electronic.de/Luefter/Sunon_DC-Luefter/40x40x20mm/MB40201V2-A99_i1828_40187_0.htm
(in Germany of course), the quietest I could find. Götz
Am 11.01.2015 um 06:59 schrieb Loïc Moreau:
Hi,
My 53132A cooling fan is becoming extremely noisy so I have to fix
the latest version will do it for the Z3811 and Z3812 as well.
Download here:
http://www.romahn.info/lucent/z3811.exe
Goetz
Am 28.12.2014 um 16:25 schrieb paul swed:
I followed fellow time-nut Gotz method of replacing the z3805 with the
z3811 in Ulrich's Z3811 program and it works very well.
Am 02.12.2014 04:29, :
Hal, (see below)
4 RX+
8 RX-
Looks good.
5 TX+
6 TX-
I think there is a typo in there. That should be pins 5 and 9.
I'm using pins 9, 8, and 7 as per Stewart's message that started this
discussion.
3 and 7 ground
Pins 1, 2, and
Hendrik,
the 10 MHz may not be dirty. The spectrum you show is that of a 10 MHz
rectangular wave and that's what on the output from the 10 MHz
connector, just a (may be clean) TTL-level signal, nothing fancy.
Götz
Am 02.12.2014 07:57, :
Hi List,
here is my example spectrum taken with a
XO00281M-CT-MV89, would it work with that board
also?
73
KJ6UHN
Alex
Original Message
Subject:Re: [time-nuts] Upgrade an HP 5342A microwave frequency
counter to have an oven oscillator.
Date: Sun, 30 Nov 2014 17:08:33 +0100
From: Götz Romahn go...@g-romahn.de
Reply
15 MHz is available from J9 on the board (near J8) continuously and is
switched by U30 ( DG419 analog switch ) from pin 8 to pin 1 if stable
locked and from there is fed to the 15 MHz output (J4 on front panel)
via some amplifiers. Pin 1 is switched to pin 2 ( GND) if unlocked.
Götz.
Am
@ Paul
yes pin 1 of U206 is the input of a schmitt-trigger ( xxACT14 ) where
the rectangular 10 MHz output on the Ref-0 Modul is generated.
@ David
10 MHz is not available on the Ref-1 module, the one with antenna input
(yea, but it is still at pin 1 of U206).
Götz
Am 01.12.2014 04:09, :
on the two transistors
as they are standard SMT devices.
Sure wish someone would shake a schematic out of the woods.
Best regards,
Tom Miller,
Forest Hill, Maryland
WA3PZI
- Original Message - From: Götz Romahn go...@g-romahn.de
To: tmiller11...@verizon.net
Sent: Friday, November 28
Adrian,
if you do not insist on a hp10811A, have a look at Gerrys site
http://gerrysweeney.com/update-diy-hpagilent-53131a-010-high-stability-timebase-option-pcbs-available/
You can buy an assembled option 10 compatible OCXO modul for less than
100 GBP.
I built DIY one with a PCB from Gerry
else. Run around the “good” unit with a scope and then do
the same on the bad one.
If the box is still inside the 30 day warranty - send it back. Even if it
isn’t, contact the seller.
Bob
On Nov 30, 2014, at 10:50 AM, Götz Romahn go...@g-romahn.de wrote:
hello Tom,
thank you for your kind
Jim,
thre is some info at:
http://www.box73.de/product_info.php?products_id=1869
it's all in German. If you can read that, goto Zusaztinformationen
(additional informations) where you will find a comprehensive articel
(pdf-document) also in German language (no I have not played with it).
enjoy
read this on:
http://www.realhamradio.com/gps-satstat-software.htm
When you first turn on the Z3816A GPS receiver, it is always
continuously sending time. There are two commands you need to use: one
to put it into the SCPI command mode, the other to switch it back to
sending time. The two
why don't you just look at the D_Sub connectors. Pins and sockets are
consistently numbered. I do see these numbers even on the J5 interface
connector of my RFTG-1. If needed take a magnifying glass.
Götz
Am 08.11.2014 16:56, :
Even though Bob says it I also screwed up the 15 pin mini.
To be
if you want to go the easy way to talk to REF-1 of REF-0 via the
J8-Diagnostic port try Ulrich Bangerts Z38XX software.
Here:
http://www.romahn.info/lucent/z3811.exe
you will find for download a patched and renamed version that directly
recognizes our nice new toys. After setting the right
J5 (interconnect) pins are routed to the kathode of smd-ics labeled
Z2upperindex3. These look like z-diodes to protect further circuitry
from transients.
The following pins are routed this way: 1,2,3,4,9,10,11,12,14,15
cheers Götz
Am 04.11.2014 13:43, :
Hi
Ok so the correct pairs should
Am 29.10.2014 04:41, :
Until you have the two units tied together and GPS ok and the Fault
light out, you won't see the 15 MHz signal. You should see a 5 volt pp
square wave of sorts coming out of the 10 MHz port.
I found a clean 10 MHz signal on the collector of Q208 and several other
The Alarm connector J3 is connected as follows:
pin 1 goes to pin 6 of U208
pin 2 goes to pin 5 of U208
pin 3 goes to pin 6 of U207
pin 3 goes to pin 5 of U207
U208 (and eventually U207) are labeled 207a. This leads to IL207 from
Siemens which is an optocoupler. Pin6 of this is collector and
So that's it folks, after all this it would now seem that all that's
needed to enable a Ref-1 unit stand alone is to link together J5 pins 2, 10, 12,
and 15, and to ground pin 3 to pin 8, and then just hang around for hours
and hours on end with yer fingers crossed:-)
I don't know if it's
Am 02.11.2014 15:08, :
Ooh err, whoops, and oh dear !!
Arthur, I've only just had a chance to look at your latest photos, and
unless I've really got my wires crossed, if you'll pardon the expression:-),
your links on J5 are not shown on pins 2, 10, 12, and 15, but on pins 4, 6,
11, and 13.
here you are:
COPYRIGHT 1991-1997 MOTOROLA INC.,SFTW P/N # 98-P36848P
,SOFTWARE VER # 2 ,SOFTWARE REV # 2 ,SOFTWARE
DATE APR 24 1998,MODEL #R5122U1152 ,HWDR P/N # 5
,SERIAL # R08FG1 ,MANUFACTUR DATE 0E05 ,
Götz
Am 02.11.2014 14:55, :
I am
Just a hint: I tried successfully Ulrichs Z38XX software
(http://www.ulrich-bangert.de/html/downloads.html)
in Windows7-32. At least the Manual Command Entry and the Debug
Window should work.
regards Götz
Am 29.10.2014 23:55, :
Hi
One thing that might help others who are having issues with
and here comes another trick:
Ulrich's Z38XX can be persuaded to accept the Z3811 instead of an Z3805.
For this to happen search with an Hex-editor in Z38XX twice for the
string z3805 and replace this z3805 with z3811, save the changes and
enjoy the various Views Ulrich provided.
Götz
Am
I also tried Steward Cobbs RS422 - Rs232 hack but with no joy in the
beginning. First I had used the standard RS232 com1 port of my computer
with no success. Later I tried my Prolific USB-to Serial adapter and
things got better. After some measurments and looking at the pinout of
the
when comparing bottom sides of ref0 and ref1 boards IC U207 near antenna
input of ref1 seems to be missing.
Goetz
Original-Nachricht
Betreff: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812...
Datum: Sun, 26 Oct 2014 22:24:29 +
Von:
helloMichael,
since I own 2 Jupiter TU60 I am interested in your PCP/Schematics and
ofcourse the software packet. Please tell me the appropriate conditions.
tnx Götz DL7AOT
Am 20.05.2014 20:16, :
Hi Bret
I did a design some years ago with the TU30/TU60/TU120 used as GPSDO for the
OZ7IGY
hi,
I am living in Berlin, Germany. http://www.box73.de/ do provide a really
reliable service. Give me a note if you need help.
Götz
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pdf Thunderbolt-Manuals identified as:
-V3 from 2000
-V3 from 2003 and
-V1 from 2012
zu zuschicken
mit besten Dank im Voraus
73
KJ6UHN
Alex
On 3/26/2014 9:13 AM, Götz Romahn wrote:
hi all,
as is my commentent to /tvb's question.
Hope it helps, Götz
Tom,
i've found 3 pdf Thunderbolt-Manuals
Am 25.03.2014 22:43, :
Today I spent good part of my time to figure out that my version of
Thunderbolt has some issue with the TSIP protocol definition. I am using
following document: ThunderBolt GPS Disciplined Clock User Guide,
Version 5.0, Part Number: 35326-30, November 2003
but
hi all,
as is my commentent to /tvb's question.
Hope it helps, Götz
Tom,
i've found 3 pdf Thunderbolt-Manuals identified as:
-V3 from 2000
-V3 from 2003 and
-V1 from 2012
Differences are in the Report Packet 0x8F-AC Data Format pp A62,A62 and 81.
If you compare, there are differences among
Byte
hallo all,
if you are a notorious DIYer, have some soldering skills and know how to
program an ATmega8515 microprocessor, have a look at:
http://www.g-romahn.de/tbolt2lcd/index.htm
for a simple small Thunderbolt monitor
cheers Götz
Am 17.08.2013 17:53, :
This is a repost with a new thread.
answer - it's a bit of a guess as to what you have once you get past
the generic stuff. When a big OEM says build it to this spec that's what
everybody does.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Götz Romahn
Sent: Tuesday
hi Bob,
I had the same problems which I solved (partly) the following way:
transformer tc1-1t is offered here: http://www.minikits.com.au/TC1-1T
for mixers I took TUF-1 which is rather similar to TUF-R3SM and got it
here (you have to bend pins properly):
Bob, how can I find out what the differences among various MV89 are ?
thanks Goetz
Am 28.05.2013 18:52, :
Hi
The MV89A is a 5 MHz resonator doubled to 10 MHz, it will have sub harmonics
that the original OCXO (using a 10 MHz resonator) does not have.
The MV89A has 10 to 20 db worse phase
Thanks for all your comments so far. I did sniffing with a cable loop
located in the lamp cell (thank you Bob for this advice), and surprise
(!) RF power does not degrade with time but does stay rock solid after
ignition. So, sorry Bob, you did not win the bet this time. Next step
should be to
other possibilities, but
I'd check those two first.
Bob
On Mar 17, 2013, at 5:22 AM, Dr. Götz Romahn go...@g-romahn.de wrote:
dear all,
beeing a silent reader of this list for a while, I now ask my first
question.
I have obtained a PRS10 that was declared faulty and it is. The problem
I
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