Re: [time-nuts] Austron 1201-D

2007-02-27 Thread Rob Kimberley
Had,

Do you mean 1210D? If so, the answer is yes. About an inch thick with
several fold out drawings. I'm in UK. Will cost approx £18 (~$35US) to air
mail (untracked). International Signed for tracked options would be more
expensive.

Rob Kimberley 

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Had
Sent: 27 February 2007 00:46
To: time-nuts-febo.com
Subject: [time-nuts] Austron 1201-D



Greetings nuts,

Would anyone have a manual for a Austron 1201-D Clock. Any format or I can
scan.

Thanks,
Hadley, K7MLR







A well regulated Militia, being necessary to the security of a free State,
the right of the people to keep and bare Arms, shall not be infringed.



This message (including any attachments) contains confidential information
intended for a specific individual and purpose, and is protected by law. If
you are not the intended recipient, you should delete this message. Any
disclosure, copying, or distribution of this message, or the taking of any
action based on it, is strictly prohibited.



___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts



___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


[time-nuts] Datum name has re-surfaced?

2007-02-27 Thread Rob Kimberley
Interesting item on EBay. Slave clock apparently made by Datum.

Item number: 200058558853

Must be another company using that name, as they never made a Model 241
AFIK.

Rob Kimberley



___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


Re: [time-nuts] Austron 1201-D

2007-02-27 Thread John Ackermann N8UR
Rob, I've been looking for the 1210D manual as well.  Do you have more 
than one copy?  If not, perhaps we can arrange a scanning party...

John


Rob Kimberley wrote:
 Had,
 
 Do you mean 1210D? If so, the answer is yes. About an inch thick with
 several fold out drawings. I'm in UK. Will cost approx £18 (~$35US) to air
 mail (untracked). International Signed for tracked options would be more
 expensive.
 
 Rob Kimberley 
 
 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of Had
 Sent: 27 February 2007 00:46
 To: time-nuts-febo.com
 Subject: [time-nuts] Austron 1201-D
 
 
 
 Greetings nuts,
 
 Would anyone have a manual for a Austron 1201-D Clock. Any format or I can
 scan.
 
 Thanks,
 Hadley, K7MLR
 
 
 
 
 
 
 
 A well regulated Militia, being necessary to the security of a free State,
 the right of the people to keep and bare Arms, shall not be infringed.
 
 
 
 This message (including any attachments) contains confidential information
 intended for a specific individual and purpose, and is protected by law. If
 you are not the intended recipient, you should delete this message. Any
 disclosure, copying, or distribution of this message, or the taking of any
 action based on it, is strictly prohibited.
 
 
 
 ___
 time-nuts mailing list
 time-nuts@febo.com
 https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
 
 
 
 ___
 time-nuts mailing list
 time-nuts@febo.com
 https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
 
 


___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


Re: [time-nuts] Austron 1201-D

2007-02-27 Thread Mike Feher
I can use one also as I have a 1210D. Earlier inquiries for a manual
never received a response. Regards - Mike  

 
Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960
908-902-3831 - cell
 
 

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of John Ackermann N8UR
Sent: Tuesday, February 27, 2007 8:31 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Austron 1201-D

Rob, I've been looking for the 1210D manual as well.  Do you have more 
than one copy?  If not, perhaps we can arrange a scanning party...

John


Rob Kimberley wrote:
 Had,
 
 Do you mean 1210D? If so, the answer is yes. About an inch thick with
 several fold out drawings. I'm in UK. Will cost approx £18 (~$35US) to
air
 mail (untracked). International Signed for tracked options would be
more
 expensive.
 
 Rob Kimberley 
 
 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On
 Behalf Of Had
 Sent: 27 February 2007 00:46
 To: time-nuts-febo.com
 Subject: [time-nuts] Austron 1201-D
 
 
 
 Greetings nuts,
 
 Would anyone have a manual for a Austron 1201-D Clock. Any format or I
can
 scan.
 
 Thanks,
 Hadley, K7MLR
 
 
 
 
 
 
 
 A well regulated Militia, being necessary to the security of a free
State,
 the right of the people to keep and bare Arms, shall not be infringed.
 
 
 
 This message (including any attachments) contains confidential
information
 intended for a specific individual and purpose, and is protected by
law. If
 you are not the intended recipient, you should delete this message.
Any
 disclosure, copying, or distribution of this message, or the taking of
any
 action based on it, is strictly prohibited.
 
 
 
 ___
 time-nuts mailing list
 time-nuts@febo.com
 https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
 
 
 
 ___
 time-nuts mailing list
 time-nuts@febo.com
 https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
 
 


___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


Re: [time-nuts] Linux code for Prologix GPIB/USB

2007-02-27 Thread Ulrich Bangert
Hal,

no matter whether you use my stuff or not: The very first thing you
should do after opening the serial port is to transmit a ++auto 0 to
hinder the interface from sending something own its own. My own internal
stuff reads as follows:

  if QCCom32.Opened then
  begin;
Debugform.Console.WriteString('Port has been opened'+#13+#10);
Qccom32.Flush;
sendstring:='++auto 0'+#13+#10;
sendflag:=true;
autoenabled:=False;
repeat
  sleep(10);
  application.ProcessMessages;
until sendflag=false;
debugform.Console.WriteString('Send ++auto 0 command'+#13+#10);
sendstring:='++ver'+#13+#10;
sendflag:=true;
repeat
  sleep(10);
  application.ProcessMessages;
until sendflag=false;
debugform.Console.WriteString('Send ++ver command'+#13+#10);
j:=0;
repeat
  inc(j);
  sleep(100);
until dataavailable or (j=10);
if dataavailable then
begin;
  PLfound:=(pos('GPIB-USB',Valuebuffer)0);
  DataAvailable:=False;
end;

Best regards
Ulrich Bangert

 -Ursprüngliche Nachricht-
 Von: [EMAIL PROTECTED] 
 [mailto:[EMAIL PROTECTED] Im Auftrag von Hal Murray
 Gesendet: Dienstag, 27. Februar 2007 04:32
 An: Discussion of precise time and frequency measurement
 Betreff: Re: [time-nuts] Linux code for Prologix GPIB/USB
 
 
 
  At the end of the USB cable there is a FTDI chip that (in 
 conjunction 
  with the appropiate driver) emulates a serial port. This 
 serial port 
  in turn is connected to the serial port of an AVR type of 
  microcontroller. Because this microcontroller expects a certain 
  setting of serial transmission parameters you have to set them 
  correct, otherwise it will not understand your commands.
 
 Thanks.  Makes sense, I guess.  I was assuming they had 
 reprogrammed the FTDI 
 chip rather than adding another CPU.  (I'm not sure why.  The 
 AVR is pretty 
 obvious.)
 
 There is a layer of stuff I haven't sorted out yet.  It's all 
 tangled up in 
 the GPIB device being at the far end of a serial (USB or 
 RS-232) string.  The 
 Prologix defaults to automagiclly reading data when it 
 becomes available and 
 sending it up to the kernel rather than waiting for you to 
 explicitly poll it.
 
 I see two cases where that might get confusing.  One is when 
 you send it a 
 command at about the time it sends you something.  You can't 
 tell if the data 
 you get arrived before or after your command.
 
 My normal command sequence is running in single cycle mode so 
 it's easy to 
 stay in lock step once you get started.  So far, I haven't 
 had any troubles 
 getting through initialization, but I'll bet my code would 
 screwup if it got 
 delayed for long enough in the right places.
 
 The other case is if you are talking to several devices.  
 Again, there is a 
 race as you switch devices.  You can't tell if the string 
 arrived before or 
 after you switched.  I think this case can be avoided by 
 switching to a 
 device that doesn't exist, checking for input, then switching 
 to the new 
 device.  It probably requires some pauses in the right place.
 
 
  I have only very limited Linux experience and even less 
 with Windows 
  emulation under Linux.
 
 You probably know more about Linux than I do about Windows.
 
 I was just looking for a subroutine package rather than a GUI/IDE.
 
 
 
 
 
 
 -- 
 These are my opinions, not necessarily my employer's.  I hate spam.
 
 
 
 
 ___
 time-nuts mailing list
 time-nuts@febo.com 
 https://www.febo.com/cgi- bin/mailman/listinfo/time-nuts
 


___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


Re: [time-nuts] Austron 1201-D

2007-02-27 Thread Rob Kimberley
In view of the responses to the original post, I'll take the bull by the
horns and scan it for the group. Will take me a while, so make yourselves a
coffee and put your feet up.

:-)

Rob 

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of John Ackermann N8UR
Sent: 27 February 2007 13:31
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Austron 1201-D

Rob, I've been looking for the 1210D manual as well.  Do you have more than
one copy?  If not, perhaps we can arrange a scanning party...

John


Rob Kimberley wrote:
 Had,
 
 Do you mean 1210D? If so, the answer is yes. About an inch thick with 
 several fold out drawings. I'm in UK. Will cost approx £18 (~$35US) to 
 air mail (untracked). International Signed for tracked options would 
 be more expensive.
 
 Rob Kimberley
 
 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 
 On Behalf Of Had
 Sent: 27 February 2007 00:46
 To: time-nuts-febo.com
 Subject: [time-nuts] Austron 1201-D
 
 
 
 Greetings nuts,
 
 Would anyone have a manual for a Austron 1201-D Clock. Any format or I 
 can scan.
 
 Thanks,
 Hadley, K7MLR
 
 
 
 
 
 
 
 A well regulated Militia, being necessary to the security of a free 
 State, the right of the people to keep and bare Arms, shall not be
infringed.
 
 
 
 This message (including any attachments) contains confidential 
 information intended for a specific individual and purpose, and is 
 protected by law. If you are not the intended recipient, you should 
 delete this message. Any disclosure, copying, or distribution of this 
 message, or the taking of any action based on it, is strictly prohibited.
 
 
 
 ___
 time-nuts mailing list
 time-nuts@febo.com
 https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
 
 
 
 ___
 time-nuts mailing list
 time-nuts@febo.com
 https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
 
 


___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts



___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


Re: [time-nuts] Austron 1201-D

2007-02-27 Thread Mike Feher
Rob -

Boy, that will be some undertaking. We sure do appreciate your efforts.
Thanks again - Mike

 
Mike B. Feher
EOZ Inc.
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960
908-902-3831 - cell
 
 

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Rob Kimberley
Sent: Tuesday, February 27, 2007 11:22 AM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Austron 1201-D

In view of the responses to the original post, I'll take the bull by the
horns and scan it for the group. Will take me a while, so make
yourselves a
coffee and put your feet up.

:-)

Rob 

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of John Ackermann N8UR
Sent: 27 February 2007 13:31
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Austron 1201-D

Rob, I've been looking for the 1210D manual as well.  Do you have more
than
one copy?  If not, perhaps we can arrange a scanning party...

John


Rob Kimberley wrote:
 Had,
 
 Do you mean 1210D? If so, the answer is yes. About an inch thick with 
 several fold out drawings. I'm in UK. Will cost approx £18 (~$35US) to

 air mail (untracked). International Signed for tracked options would

 be more expensive.
 
 Rob Kimberley
 
 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 
 On Behalf Of Had
 Sent: 27 February 2007 00:46
 To: time-nuts-febo.com
 Subject: [time-nuts] Austron 1201-D
 
 
 
 Greetings nuts,
 
 Would anyone have a manual for a Austron 1201-D Clock. Any format or I

 can scan.
 
 Thanks,
 Hadley, K7MLR
 
 
 
 
 
 
 
 A well regulated Militia, being necessary to the security of a free 
 State, the right of the people to keep and bare Arms, shall not be
infringed.
 
 
 
 This message (including any attachments) contains confidential 
 information intended for a specific individual and purpose, and is 
 protected by law. If you are not the intended recipient, you should 
 delete this message. Any disclosure, copying, or distribution of this 
 message, or the taking of any action based on it, is strictly
prohibited.
 
 
 
 ___
 time-nuts mailing list
 time-nuts@febo.com
 https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
 
 
 
 ___
 time-nuts mailing list
 time-nuts@febo.com
 https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
 
 


___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts



___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


[time-nuts] Important RTFG interface information

2007-02-27 Thread John Ackermann N8UR
I just acquired the mysterious interface cable that goes between the
RTFG-m-XO and RTFG-m-RB units.  I have suspected that it wasn't a simple
crossover cable, because the results I've seen with my homemade
crossover haven't made a lot of sense.

Here's the scoop:  the interface cable is a simple DB-9 to DB-9 ribbon
cable with the ribbon flipped -- the striped side goes to pin 1 on the
RB end, and to pin 5 on the XO end.  We pretty much knew that.

However, the conductor on the other edge of the ribbon (between pin 5 on
the RB end, and pin 1 on the XO end) is BROKEN in the middle.

So, there is NO CONNECTION between XO pin 1 and RB pin 5.  (It goes
without saying, but I'll say it anyway, that this means the cable ends
are not interchangeable -- there is an XO end and an RB end.)

Hope this is helpful.  I got a few more interesting bits and pieces
along with this cable, but I think this is the important news for those
of us trying to interface these units at home.

John

___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


Re: [time-nuts] Austron 1201-D

2007-02-27 Thread Rob Kimberley
Mike,

Have scanned approx half manual tonight - Intro thru to end of Chapter 4.
Hope to get finished tomorrow, and will put a PDF copy on my web site.

Cheers

Rob 

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Mike Feher
Sent: 27 February 2007 17:06
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Austron 1201-D

Rob -

Boy, that will be some undertaking. We sure do appreciate your efforts.
Thanks again - Mike

 
Mike B. Feher
EOZ Inc.
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960
908-902-3831 - cell
 
 

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Rob Kimberley
Sent: Tuesday, February 27, 2007 11:22 AM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Austron 1201-D

In view of the responses to the original post, I'll take the bull by the
horns and scan it for the group. Will take me a while, so make yourselves a
coffee and put your feet up.

:-)

Rob 

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of John Ackermann N8UR
Sent: 27 February 2007 13:31
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Austron 1201-D

Rob, I've been looking for the 1210D manual as well.  Do you have more than
one copy?  If not, perhaps we can arrange a scanning party...

John


Rob Kimberley wrote:
 Had,
 
 Do you mean 1210D? If so, the answer is yes. About an inch thick with 
 several fold out drawings. I'm in UK. Will cost approx £18 (~$35US) to

 air mail (untracked). International Signed for tracked options would

 be more expensive.
 
 Rob Kimberley
 
 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
 On Behalf Of Had
 Sent: 27 February 2007 00:46
 To: time-nuts-febo.com
 Subject: [time-nuts] Austron 1201-D
 
 
 
 Greetings nuts,
 
 Would anyone have a manual for a Austron 1201-D Clock. Any format or I

 can scan.
 
 Thanks,
 Hadley, K7MLR
 
 
 
 
 
 
 
 A well regulated Militia, being necessary to the security of a free 
 State, the right of the people to keep and bare Arms, shall not be
infringed.
 
 
 
 This message (including any attachments) contains confidential 
 information intended for a specific individual and purpose, and is 
 protected by law. If you are not the intended recipient, you should 
 delete this message. Any disclosure, copying, or distribution of this 
 message, or the taking of any action based on it, is strictly
prohibited.
 
 
 
 ___
 time-nuts mailing list
 time-nuts@febo.com
 https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
 
 
 
 ___
 time-nuts mailing list
 time-nuts@febo.com
 https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
 
 


___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts



___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts



___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


Re: [time-nuts] Thunderbolt versus Home made

2007-02-27 Thread Angus
On Sun, 25 Feb 2007 09:52:55 -0600, you wrote:

Angus wrote:
 Although that's not what I was talking about doing above, I think that
 it's pretty much what some of the hardware GPSDO's actually do using
 various types of oscillators (and to good effect too). As in these:

 http://www.jrmiller.demon.co.uk/projects/ministd/frqstd.htm 
 http://www.frars.org.uk/cgi-bin/render.pl?parameter=pageid=1285

 the loop filter is basically just an RC circuit. It's not quite raw
 GPS, but is quite different to using a digital filter as used in a
 Thunderbolt, Shera, etc., which can run to hours.

 When the N1JEZ board was mentioned, I assumed that it was this type of
 controller that was meant - and I think it does need 10KHz unless it
 gets much more of a mod than a couple of counters.

 Angus.
   
Angus,

Don't get me wrong, the James Miller design does a great job, 
considering it's simple and elegant implementation and the fact that for 
so little money you can have a frequency standard that beats anything a 
ham could make in his or her shop.

This will do a great job for most applications where you want to be 
within a few Hz or so around 10 GHz, and as long as the GPS signals are 
good. For the intended market, if the GPS signals are not good, you 
simply wait or move the antenna.

A lot of the money spent on commercial GPSDO's is spent on improving 
hold-over performance, because many commercial applications simply 
cannot postpone using the system until the GPS signal is good.

I just wanted to point out that the 10 kHz output can be misleading. The 
GPS timing is such that if you have a quality OCXO, a loop faster than 
at least 20 minutes will actually do a disservice to the OCXO, 
regardless of the PLL reference frequency. If you use an inexpensive, 
not temperature stabilized VCXO, you can probably speed up the loop 
quite a bit, simply because the VCXO itself in free running mode will 
not be doing that great.

If your frequency and time needs are modest (and that probably covers 
99% of applications, including anything I could dream of personally), 
this design will be perfectly satisfactory.

But, and this is a significant caveat, this is TIME-NUTS where most 
people are looking at that like the holly grail 1% :-)

Didier

Hi Didier,

Sorry, my original post was not very clear - I had only wondered if
faster PPS signals might ever help with the measurement each second; I
didn't mean to suggest that they might affect the required overall
loop time much. ( Thinking back to all the posts a couple of months
ago, I should probably resist any urge to comment on the effect of
sawteeth on stability for the moment...  )
Anyway, I was just curious. It's one of the many things I don't have
much time to mess with, so wondered if anyone else had - but
apparently not.

Angus.


___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


Re: [time-nuts] Password recovery on Symmetricom TS3000/3100

2007-02-27 Thread German
 Hi,
 
 Is there anybody who can assist with PW recovery on
 a TimeSource 3100 GPS based PRS. One of our students
 changed the default password and now we are
 locked-out... I take it it is a jumper on the
 board somewhere, but the manual gives no info on this.

Christophe,

Remove the card from the shelf, in front right hand side there is a
jumper named DB Init move the the jumper from A to B or vice versa.

When the unit starts will detect the change in the jumper and go to
factory defaults. Then you can use the default user name and password
(is in the manual)

NOTE: All settings will reset to default. If you can not tolerate
downtime then you need to get the back-door password call Symmetricom
technical support for help.
http://www.symmetricom.com/Contact/Customer_Assistance_Centers/

PS: I work for Symmetricom but this is not an official Symmetricom
response, I'm wearing my hobbyist hat in this mail list.

--ga



___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


Re: [time-nuts] Important RTFG interface information

2007-02-27 Thread TheInfamousFlavio
Pins 1 and 5 on each unit control the failover functionallity.  If you 
disconnect them entirely on both the XO and RB units, both units will be in 
ON mode.  But it will be interesting to see what happens when it goes only 
one way.


- Original Message - 
From: John Ackermann N8UR [EMAIL PROTECTED]
To: Discussion of precise time and frequency measurement 
time-nuts@febo.com
Sent: Tuesday, February 27, 2007 17:27
Subject: [time-nuts] Important RTFG interface information


I just acquired the mysterious interface cable that goes between the
 RTFG-m-XO and RTFG-m-RB units.  I have suspected that it wasn't a simple
 crossover cable, because the results I've seen with my homemade
 crossover haven't made a lot of sense.

 Here's the scoop:  the interface cable is a simple DB-9 to DB-9 ribbon
 cable with the ribbon flipped -- the striped side goes to pin 1 on the
 RB end, and to pin 5 on the XO end.  We pretty much knew that.

 However, the conductor on the other edge of the ribbon (between pin 5 on
 the RB end, and pin 1 on the XO end) is BROKEN in the middle.

 So, there is NO CONNECTION between XO pin 1 and RB pin 5.  (It goes
 without saying, but I'll say it anyway, that this means the cable ends
 are not interchangeable -- there is an XO end and an RB end.)

 Hope this is helpful.  I got a few more interesting bits and pieces
 along with this cable, but I think this is the important news for those
 of us trying to interface these units at home.

 John

 ___
 time-nuts mailing list
 time-nuts@febo.com
 https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
 


___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts


Re: [time-nuts] Important RTFG interface information

2007-02-27 Thread John Ackermann N8UR
I've seen situations where it seems that the units aren't being
disciplined as they should be.  I hope that getting this cable right
will solve that problem.

John


[EMAIL PROTECTED] said the following on 02/27/2007 06:57 PM:
 Pins 1 and 5 on each unit control the failover functionallity.  If you 
 disconnect them entirely on both the XO and RB units, both units will be in 
 ON mode.  But it will be interesting to see what happens when it goes only 
 one way.
 
 
 - Original Message - 
 From: John Ackermann N8UR [EMAIL PROTECTED]
 To: Discussion of precise time and frequency measurement 
 time-nuts@febo.com
 Sent: Tuesday, February 27, 2007 17:27
 Subject: [time-nuts] Important RTFG interface information
 
 
 I just acquired the mysterious interface cable that goes between the
 RTFG-m-XO and RTFG-m-RB units.  I have suspected that it wasn't a simple
 crossover cable, because the results I've seen with my homemade
 crossover haven't made a lot of sense.

 Here's the scoop:  the interface cable is a simple DB-9 to DB-9 ribbon
 cable with the ribbon flipped -- the striped side goes to pin 1 on the
 RB end, and to pin 5 on the XO end.  We pretty much knew that.

 However, the conductor on the other edge of the ribbon (between pin 5 on
 the RB end, and pin 1 on the XO end) is BROKEN in the middle.

 So, there is NO CONNECTION between XO pin 1 and RB pin 5.  (It goes
 without saying, but I'll say it anyway, that this means the cable ends
 are not interchangeable -- there is an XO end and an RB end.)

 Hope this is helpful.  I got a few more interesting bits and pieces
 along with this cable, but I think this is the important news for those
 of us trying to interface these units at home.

 John

 ___
 time-nuts mailing list
 time-nuts@febo.com
 https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

 
 
 ___
 time-nuts mailing list
 time-nuts@febo.com
 https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
 
 


___
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts