Slow the Gate time down.
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Paul
Sent: Monday, 15 July 2013 11:27 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] GPSDO - Does it work?
On Mon, Jul 15,
I have a Z3816A and it periodically jumps into holdover with error message:
Holdover: 1PPS TI exceeds hold threshold
Then for the next 3-4 hours it gradually adjusts the phase alignment.
The error message is Recovery: phase alignment [TI +435.5 us]
(when I noticed it had changed, they figure was
)
K3wry k3...@aol.com wrote:
Take a look at the RIGOL analyzer. You can get this new one for about the
same money
Dr Joe PALSA
804-350-2665
Sent from my iPhone.
On Jul 14, 2013, at 1:18 AM, Mark C. Stephens ma...@non-stop.com.au wrote:
Perry I have a 3585A too, The weight isn't so
offset, I am getting way lower than that,
seems noise floor for me is ~-170 in PN.exe.
But I don't know how accurate it is way down there.
-marki
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Mark C. Stephens
Sent: Monday, 15 July 2013
Perry I have a 3585A too, The weight isn't so bad once you get used to it. :)
Mines on a rack shelf that I can slide it out onto the workbench for
maintenance.
Performance wise, they are fantastic for phase noise measurement using John
Miles's Phase noise software.
Although a little slow, It is
Scotty, need some help figuring out my elevation.
I noticed all the smartclocks are surveying wrong.
The only one correct is the thunderbolt.
Interesting.
Once I figure out the string to enter the correct co-ords into the Z38xx's but
I am still troubled by the elevation variable.
-marki
I have a spare 10811 double oven, is there a homebrew outer oven controller
floating around?
-Marki
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] 10811 outer oven controller.
Is it enough if I have a schematic to send? But first let me find it...
On Fri, Jul 12, 2013 at 5:13 PM, Mark C. Stephens ma...@non-stop.com.au wrote:
I have a spare 10811 double oven, is there a homebrew outer oven controller
floating around?
-Marki
When I try to enter my antenna location as per surveyor:
-33.763698
151.092111
With this scpi command:
:GPS:POS S,+33,+79,3.69800E+001,E,+151,+9,+2.11100E+001,+9.45600E+001
For some reason, the Z3816A displays this:
LAT S 33:59:36.980
LON E 151:09:21.110
Which is correct except the
. In addition, because of the orientation of the SATs orbits,
altitude is the one coordinate which is the least accurately calculated.
Didier
Mark C. Stephens ma...@non-stop.com.au wrote:
Scotty, need some help figuring out my elevation.
I noticed all the smartclocks are surveying wrong.
The only one
I just scored a Leica L1 GPS choke ring antenna.
Of course I am anxious to get it up (pardon the pun) Sorry tom ;)
But its huge, I mean its 14 across the base and 12 high excluding the spike.
It came with a ½ and ¾ adaptor so I can choose mounting pole thread.
Obviously, the top of the roof is
I went to use my 5370B todayt and noticed the LEDS on the display are slowly
sort of pulsing bright one after another.
Also all the push button LEDS are going on and off one by one.
The strangest thing is that it appears to be working o/k via HPIB.
I don't have extender boards but I do have a
be a lot
more than 4.2V unless the overvoltage Zener is able to sink all that current...
-marki
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Mark C. Stephens
Sent: Saturday, 6 July 2013 8:18 PM
To: time-nuts@febo.com
Subject: [time-nuts
as I rely on it tremendously.
-marki
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Mark C. Stephens
Sent: Saturday, 6 July 2013 8:47 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP 5370B Leds
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Mark C. Stephens
Sent: Saturday, 6 July 2013 8:47 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP 5370B Leds pulsing slowly, buttons selecting
normally, PB
and appears to be reading o/k
sounds quite typical for a dried out electrolytic cap.
Look for the unregulated -10V that goes into the regulator circuit.
Most likely C3 on the power supply motherboard is dead.
Adrian
Mark C. Stephens schrieb:
Checked the PSU voltages on the PSU card next to the 10811
... ;)
Adrian
Mark C. Stephens schrieb:
Hi Nigel,
The only screw type electro can find is 29000uf@10V. it's the same dimensions.
Should I risk the strain on the rectifiers (another 10Kuf is rather a lot)?
Without this timer I am dead in the water so I need to do the right thing
here...
That's
July 2013 11:05 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP 5370B Leds pulsing slowly, buttons selecting
normally, PB LEDS scannning and appears to be reading o/k
Mark C. Stephens wrote:
Correct, C3 (17000uf @ 10v) is measuring 39uf :) I have a 29000@10V
to just under 238V with a maximum load of 8A (the current
rating of the secondary).
HTH,
Robert G8RPI.
From: Mark C. Stephens ma...@non-stop.com.au
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Saturday, 6 July 2013, 13:25
scannning and appears to be reading o/k
What's the specified tolerance on the 17,000 uF? You probably have quite a
range to work within. If you are lucky, they specified something like
+80/-20% and the 29,000 uF might be OK (measure it).
On Sat, Jul 6, 2013 at 4:18 AM, Mark C. Stephens ma...@non
and appears to be reading o/k
On 7/6/13 2:46 PM, Mark C. Stephens wrote:
Hopefully HP Voltage Derated the Cap as well so it can handle our
250V here.. We are across the road from the main transformer for the
area so the voltage is highest at our place, I checked the meter box
this morning - it is 255
know what the situation is for you,
but in some places power companies can be forced to repair/replace equipment
that they fry due to faults in their system.
Ed
On 7/6/2013 5:14 PM, Mark C. Stephens wrote:
I just checked the HP manual, most of the linear equipment is specified: 240V
+5/-10
The elephant in the room thing with me is SAFETY :)
I mean, can this be a fire hazard, what about the insulation breakdown on the
secondary winding etc..
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Burt I. Weiner
Sent: Sunday, 7
I am trying to track down a trimmer cap for an efratom FRK.
It's a Johanson Manufacturing pc32t140 1.5-14pf trimmer cap.
This is a critically tuned section of the LAMP board so I need to use the exact
same replacement part.
Does anyone know where I can get one?
-marks
Kind Regards,
Mark
Hi Perry, I have had good dealing with Tommy Chou, if anything is broken he
will replace it.
But, the E1938's are a bit expensive at the moment.
I am going out on a limb here but the E1938 is about the nicest OCXO I have
come across.
Probably some of the more recent stuff would be on par, but
At $38 a piece - ouch!
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Charles P. Steinmetz
Sent: Friday, 5 July 2013 7:08 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] need-a-part pc32t140
Go here My Friend: http://www.prc68.com/I/HPE1938.shtml
There is even the schematic and control/calibration software for the E1938
This is Brooke Clarks most excellent site.
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Graham /
Get a Serial LED breakout box and make sure both TX/RX are lit.
If just one or the other make a pin2/3 X-over cable.
No other pins are needed except for pin 5. (Signal GND)
-marki
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Jim
I have the same model and the trigger settings are great for capturing those
tiny width PPS pulses.
I setup the trigger so I see the pulse in the middle of the screen and its
updated when the pulse occurs.
In a nutshell, as Chris mentioned, The trigger modes are excellent for time
nuts.
The
I just had a discussion about older spectrum analyser versus the new Rigol type
SA.
They are saying the Rigol is -80dBc.
Unfortunately I don't know what the specs of mine are.
Could someone help me out with some noise floor figures for the following?
* HP 8566A
* HP 8568B
*
At the risk of hijacking a thread, shooting of the subject and just generally
bad etiquette for news group posting, I am running all my S1 NTP servers on HP
thin clients!
They only draw ~14 watts of power.
I have managed to fit a 3.5 inch laptop drive in the T150's so they run a
(minimal text
You could also try questi...@lists.ntp.org.
The developers etc hang out on that list.
There are a lot of helpful experts on NTP there.
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Hal Murray
Sent: Thursday, 4 July 2013 8:34 AM
To:
Thanks Mate, I needed cheering up :)
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of gandal...@aol.com
Sent: Monday, 1 July 2013 6:45 PM
To: time-nuts@febo.com
Subject: [time-nuts] Language -- The eternal barrier
Having recently
Question: would this antenna work with the Austron 2200 series?
Symmetricom TrueTime GPS Antenna 140-615 Downconverter Datum 140-6150 Outdoor
Ebay item number 281109470283
-marki
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Hi Graham,
Unfortunately, when you get the 'disease' 8 antenna probably will be the
minimum,
I think myself have 7 bullets, A symetricom 12V puckish thing (very good btw) 2
trimble pucks. a hp 58534 integrated RX antenna that weighs about a kilo but
has super accurate PPS and a trimble
I noticed my Z3815A was show 0ns (zero) for predicted uncertainty tonight.
Is there something wrong or is its predicted holdover uncertainty below
measureable (displayable) value?
Is there a pForth command that would give me an accurate figure for PHU?
My 5 other Z3805A smartclocks are all in
Hi Charles,
My Z3805A are usually in the 1-4us range.
I was pleasantly surprised to see the nanoseconds!
I must ask, do you have the later Z3805A with the MTI oscillator?
Alll mine have the older 10811 Double oven.
-marki
-Original Message-
From: time-nuts-boun...@febo.com
Charles, rather silly typo on my behalf, without doing the proper research, of
course I meant the Symetricom version.
These 5 Z3805A have been running just over 6 weeks. I must have been extremely
lucky to strike a batch of good 10811's then.
The Z3815A has gone back up to 100ns PHU now shrug
I err happened to see it on bit torrent, quite accidently of course, don't
quite know how I managed to end up there but it did catch my eye.
http://torrent.zoink.it/BBC.Precision.The.Measure.of.All.Things.1of3.Time.and.Distance.PDTV.x264.AAC.[MVGroup.org].torrent
-Original Message-
From:
.
cheers, Graham ve3gtc
On 13-06-26 11:04 PM, Mike M wrote:
Mark C. Stephens
Wed Jun 26 10:12:53 EDT 2013
RDR have some fantastic stuff.
But they won't ship outside of USA.
I have tried everything but according to Mark Cole the manager,
The loss of time
I have a GPSR2 with unusual; GPS behaviour.
E-113:syst:stat?
[ Active ] GPSR 2 Status
SYNCHRONIZATION ... [ Outputs Valid/Reduced Accuracy ]
SmartClock Mode _Reference OutPuts ___
RDR have some fantastic stuff.
But they won't ship outside of USA.
I have tried everything but according to Mark Cole the manager,
The loss of time and the additional risk of international shipping doesn't fit
with our business profile
-Original Message-
From: time-nuts-boun...@febo.com
to put the elevation mask to 10degrees, not 25 :GPS:SAT:TRAC:EMAN 10
On Tue, Jun 25, 2013 at 8:41 AM, Mark C. Stephens ma...@non-stop.com.au wrote:
I have a GPSR2 with unusual; GPS behaviour.
E-113:syst:stat?
[ Active ] GPSR 2 Status
always 0. Have you already given the :SYST:PRES command to
preset the receiver to the factory settings?
On Wed, Jun 26, 2013 at 6:13 PM, Mark C. Stephens ma...@non-stop.com.au wrote:
Hi Azelio, err...
E-113:syst:stat?
[ Unlocked ] -- GPSR 2 Status
I do believe the UT+ will try to charge the battery while on, so some sort of
rechargeable lithium cell is in order.
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Bob Stewart
Sent: Thursday, 27 June 2013 2:11 PM
To: Time Nuts
Having a couple of p[problems with a Z3816A.
:syst:diag:log:read:all? Reports:
Log 028:20130624.10:00:00: Power on
Log 029:20130624.10:00:12: -12B is out of tolerance, value: -12.53
Log 030:20130624.10:00:12: -12C is out of tolerance, value: -12.65
Log 031:20130624.10:00:12: -12D is out of
=original
MSE reports the two .exe files as unsafe and contains a virus. Does
anyone else see the same thing?
Regards
- Original Message -
From: Mark C. Stephens ma...@non-stop.com.au
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Saturday, June
-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Magnus Danielson
Sent: Sunday, 23 June 2013 11:02 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts] FE-5860A - R232 working but S type commands don't work.
Hi Mark,
On 06/23/2013 12:15 PM, Mark C. Stephens wrote:
The Program
has made the software to do it and do it, it does well.
-marki
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Mark C. Stephens
Sent: Friday, 21 June 2013 11:39 AM
To: time-nuts@febo.com
Subject: [time-nuts] FE-5860A - R232 working but S
-5860A - R232 working but S type commands don'twork.
MSE reports the two .exe files as unsafe and contains a virus. Does anyone else
see the same thing?
Regards
- Original Message -
From: Mark C. Stephens ma...@non-stop.com.au
To: Discussion of precise time and frequency measurement
and a tweak 1.0-/+E5 either side of current
setting possibly will further improve specs.
-marki
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Mark C. Stephens
Sent: Sunday, 23 June 2013 12:00 AM
To: Discussion of precise time and frequency
I finally got around to testing a couple of FE5860 I bought on eBay 19 months
ago for $30.00 a piece including shipping.
I have PPS, !0Mhz, lock indication all connected and working.
Rs232 appears to be working as this command appears to have had a chat with the
rubidium:
C:\Documents and
Also Murray,
Warning! don't attempt to run cal with an empty stack, it will go into a
negative loop forever and you will have to reboot the clock to get control
again.
I haven't found cal in the words on a Z3815A but is present on the Z380x series.
-marki
-Original Message-
From:
You might find there are either hard links on the board or different firmware?
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Murray Greenman
Sent: Tuesday, 18 June 2013 12:10 PM
To: time-nuts@febo.com
Subject: [time-nuts] Z38XX
Hi Perry, I was browsing a 1988 HP catalogue tonight..
The 8566B came in at a cool 62 thousand dollars new.
Wow!
-marki
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Perry Sandeen
Sent: Friday, 14 June 2013 2:48 PM
To:
Oh that is so sad, Trying to track down parts to find that some scrap metal
merchant has melted it down.
And to think a surplus dealer would knowingly scrap HP test equipment is just
plain sacrilege.
All those custom IC's and PROMS m e l t e d . .
God help us down under if any of the scrappers
Talking of Cooling HP 5370's, I have a 12V fan Gorilla taped to mine fed from a
wallwart.
Not elegant, but it has reduced the heat sink temperature dramatically.
Is anyone else concerned about the heat sink temperature on the 5370?
Has anyone done a fan modification they would care to share?
Anybody have service, schematics or experience for one of these OCXO?
They are commonly seen in early HP 8566A spectrum analysers.
It is out of adjustable range.
Fortunately I had a spare OSC 49-61C floating about and replaced this off
frequency reference with it.
However the replacement tends
Cushman required at the time the 5510 was
built.
Good luck with yours.
Fred
On 6/12/2013 7:48 AM, Mark C. Stephens wrote:
Anybody have service, schematics or experience for one of these OCXO?
They are commonly seen in early HP 8566A spectrum analysers.
It is out of adjustable range
Hi All,
I couldn't wait for the new RTC and zero-power nvram to arrive so I took the
Dremel to the 2 chips and successfully replaced the batteries myself.
http://www.vk2hmc.net/blog/?p=245
However, The Austron seems to have a problem with dates after 1999.
As soon as I set the date to greater
:16 AM, Mark C. Stephens ma...@non-stop.com.auwrote:
Hi All,
I couldn't wait for the new RTC and zero-power nvram to arrive so I
took the Dremel to the 2 chips and successfully replaced the batteries myself.
http://www.vk2hmc.net/blog/?p=245
However, The Austron seems to have a problem
at 2:16 PM, Mark C. Stephens ma...@non-stop.com.auwrote:
Hi All,
I couldn't wait for the new RTC and zero-power nvram to arrive so I
took the Dremel to the 2 chips and successfully replaced the batteries myself.
http://www.vk2hmc.net/blog/?p=245
However, The Austron seems to have a problem
. Not pretty but does work and frankly the method could be used with any
gps rcvr that allows a 10 Mhz drive and has a 35.42 Mhz IF. So there is an
answer.
Regards
Paul
WB8TSL
On Mon, Jun 10, 2013 at 8:16 AM, Mark C. Stephens ma...@non-stop.com.auwrote:
Hi All,
I couldn't wait for the new
I have been looking through the manuals I received for my 2200.
In fact, Marked on the front of both binders is Operation and service for My
serial number!
Serial number 11602Y
One section contains the complete schematic, board layout, service notes,
description and parts list for the Antenna
Hi all,
Anyone have a redundant Austron 2200 Antenna/1st IF assembly?
(part number=~12812282)
If so, I'd appreciate it if you drop me a line with your price.
Many thanks,
-marki
Kind Regards,
Mark Stephens
Mark Clemens Stephens | Customer service engineer | Non-Stop Computer Ltd
* +61 2
Hi All,
According to the configuration sheet for my Austron 2200 I am supposed to have
option p/n 12811903 in slot A5.
However, the slot is empty and there is no blank installed.
Someone has removed the option card but I am unable to figure out what it is.
I have searched the web to no avail.
Dear all,
My 2200 was stuck in a POST reboot loop.
It would check, RAM, ROM RTC then say waiting for signal processor the reboots
again.
During troubleshooting I replaced both Zero Power NVRAM and RTC chips.
I only had old ones, but they must have enough juice left and this has
appeared to
Hi Tammy,
The lock indicator on my rather ancient 9390 is one of the decimal points on
the LED display.
is directly connected to the Rubidium and illuminates when the Rubi is in lock.
On my unit it has no direct correlation with GPS lock.
Please let us know the postfix on your 9390
are a long long way from that concern.
Can't comment on the replaced parts. I am however sure it will bight me one
day. Far sooner then later.
Good luck
Paul
WB8TSL
On Sun, Jun 9, 2013 at 6:06 AM, Mark C. Stephens ma...@non-stop.com.auwrote:
Dear all,
My 2200 was stuck in a POST reboot loop
, 2013, at 1:07 AM, Mark C. Stephens ma...@non-stop.com.au wrote:
Bob, I am shocked! Are you Trolling?!
To Quote Stuart Cobb, posted to this very list on 29th May, 2013:
The Z3815A I got from China was in a different case, just two bent
pieces of sheet aluminum. The case _looks_ official
Magnus, Just plug 18-60V into P10 (next to the GPS), Supposedly the input power
is steered by diodes so it is polarity insensitive.
Anyway, It's a standard connector, I am sure you have tons of them, On mine,
Pin 1 is wired to negative, Pin 2 to positive.
Pin2 is closest to the left edge looking
:52 AM, Mark C. Stephens wrote:
These are 9.8304Mhz, is possible to move them to 10Mhz?
http://www.ebay.com/itm/Symmetricom-SA-22c-9-8304MHz-Precision-Rubidiu
m-Oscillator-5V-and-15V-NICE-/261223397404
-marki
Kind Regards,
Mark Stephens
Mark Clemens Stephens | Customer service engineer
that
plug directly into everything.
Bob
On Jun 5, 2013, at 6:15 PM, Mark C. Stephens ma...@non-stop.com.au wrote:
Magnus, Just plug 18-60V into P10 (next to the GPS), Supposedly the input
power is steered by diodes so it is polarity insensitive.
Anyway, It's a standard connector, I am sure you
for
nav
On 6/3/13 2:17 PM, Magnus Danielson wrote:
On 06/03/2013 06:25 AM, Mark C. Stephens wrote:
I see they have retired USA-84. http://en.wikipedia.org/wiki/USA-84
It is still up there transmitting though. Perhaps it won't turn off
:)
Just because you receive PRN 27 does not mean that SVN 27
These are 9.8304Mhz, is possible to move them to 10Mhz?
http://www.ebay.com/itm/Symmetricom-SA-22c-9-8304MHz-Precision-Rubidium-Oscillator-5V-and-15V-NICE-/261223397404
-marki
Kind Regards,
Mark Stephens
Mark Clemens Stephens | Customer service engineer | Non-Stop Computer Ltd
* +61 2 9011
I see they have retired USA-84. http://en.wikipedia.org/wiki/USA-84
It is still up there transmitting though. Perhaps it won't turn off :)
-marki
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Subject: Re: [time-nuts] 9390 GPS RX
On 5/31/2013 5:24 AM, Mark C. Stephens wrote:
Hi Ed,
Well, since you've apparently given up on time-wasters like sleep, there are
a few things that you can do while you wait.
My daytime job is level 2 remote support so I seem to get by on about 6
-nuts-boun...@febo.com] On Behalf
Of Ed Palmer
Sent: Sunday, 2 June 2013 3:36 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] 9390 GPS RX
On 6/1/2013 9:47 AM, Mark C. Stephens wrote:
Yep, Phase plot is like a Saw tooth.
So, despite the 'lock' LED, it isn't locked. Well, maybe something's
A Man has got to have his toys and I have a HP 59503A GPIB clock...
Has anyone seen software to maybe sync the clock with an NTP server or
something :)
Windows, Linux, it's all good!
-marki
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To
That's the One, a 53509A.
It is a quarter width 2RU unit (a bit higher with its feet on)
Has GPIB on rear.
Set via buttons behind a small hinged flap on the front.
My 59503A drifts a lot and I seem to remember it wasn't y2K compliant.
I want to have some software send out a request for time over
Typo - HP 59309A.
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Mark C. Stephens
Sent: Sunday, 2 June 2013 6:25 AM
To: j...@quikus.com; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] 59503A GPIB clock
:25 PM, Mark C. Stephens ma...@non-stop.com.auwrote:
That's the One, a 53509A.
It is a quarter width 2RU unit (a bit higher with its feet on) Has
GPIB on rear.
Set via buttons behind a small hinged flap on the front.
My 59503A drifts a lot and I seem to remember it wasn't y2K compliant.
I
-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Ed Palmer
Sent: Friday, 31 May 2013 3:58 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts] 9390 GPS RX
On 5/30/2013 9:44 PM, Mark C. Stephens wrote:
Oh No, it stayed locked, I sat there until 4:30am watching
...@febo.com] On Behalf
Of Arthur Dent
Sent: Friday, 31 May 2013 10:26 PM
To: time-nuts@febo.com
Subject: [time-nuts] 9390 GPS RX
On May 24th Mark C. Stephens asked:
Does the 9390-5588A have the 16.618 Mhz Vectron oscillator externaly located
on one of the wire wrap boards?
Well I had to dig
-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]
On Behalf Of Mark C. Stephens
Sent: Wednesday, May 29, 2013 12:02 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Z3815A
Hmm, Something is awry with this particular Z3815A:
e.g.
p4th D
-nuts@febo.com
Subject: Re: [time-nuts] 9390 GPS RX
On 5/29/2013 10:14 PM, Mark C. Stephens wrote:
Ah, The old Section 2 part (in Don Adams voice)
Okay, I have been watching the timer out of the corner of my eye, and there
is a trend.
The TI difference gradually falls down to about 3ns (good
Just remember a lot of the Ytterbium comes from Australia, Jay ;)
According to Wikipedia, The optical clock based on it is exact to 17 digits
after the decimal point!
I hope that doesn't mean it is time to trade my HP 5370B in shortly...
How do they measure down to these resolutions?
Of Mark C. Stephens
Sent: Thursday, 30 May 2013 4:14 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Z3815A
I ran efc_comp and the efc table is slowly filling!
p4th D efc_rep
1.115185 672147.2 1 6.721472e+05 0.00e+00 0.00e+00
2.115185 672145.6 1
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Ed Palmer
Sent: Friday, 31 May 2013 2:11 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] 9390 GPS RX
On 5/30/2013 1:24 AM, Mark C. Stephens wrote:
Ed, et al,
I was just cleaning up
Oh No, it stayed locked, I sat there until 4:30am watching it..
But it's still drifting +/- 2 Hz 8 hours later which annoys me so much!
I will take a page from Ed's book and exercise patience, I guess.
Not much else I can do without disturbing its natural course.
-marki
-Original
-boun...@febo.com] On Behalf
Of Mark C. Stephens
Sent: Wednesday, 29 May 2013 12:36 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Z3815A
I believe these were all rescued from the Tip (Dump, Trash) judging by the
water damage and bent cases.
Mine had been
On 5/28/2013 11:37 AM, Mark C. Stephens wrote:
Ed and Bob,
The FRK has settled down to 0.03Hz out after 2 days undisturbed (back in its
black box).
Allan deviation @ 800 seconds is 4.88E-12 which I am not terribly happy about.
-mark
___
time-nuts
I have recently obtained the holy grail for me - an 8566B.
They are rare as hens teeth in Australia!
I have a 8568B as well and my phase noise floor is somewhere way down there on
that machine ;)
However it appears the internal 10Mhz reference had died on the new (old) 8566B.
I haven't room on
, 2013, at 2:14 AM, Mark C. Stephens ma...@non-stop.com.au wrote:
Wow the 2 black heatsinks on the puck are really hot - too hot to touch.
I don't think that would be normal deign.
They are probably the excessive current sink culprits.
Anyone got a manual for the e1398a OCXO?
-marki
you had the 3815? If not so long, I'd contact the seller. You
have indeed convinced me to quickly fire up the next one I have coming in.
Bob
On May 29, 2013, at 2:14 AM, Mark C. Stephens ma...@non-stop.com.au wrote:
Wow the 2 black heatsinks on the puck are really hot - too hot to touch.
I
Good Day Ed,
Yes, I installed the missing little BNC jumper and set the switch to internal
reference.
As I mentioned before I am not too keen on disturbing the innards of these due
to cal reasons. I mean 22GHz is way up there..
So, nope, I left that sucker in there until I get room on my bench
want it in my rack :)
-marki
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Ed Palmer
Sent: Thursday, 30 May 2013 1:47 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] 9390 GPS RX
On 5/29/2013 4:27 AM, Mark C. Stephens wrote
(~1
second later). Two hours later you should have a position hold mode
started and I think that the uncertainty must be available at that
point. It will look high but should be available.
On Wed, May 29, 2013 at 3:33 PM, Mark C. Stephens ma...@non-stop.com.au
wrote:
Thanks Azelio, That's
-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Ed Palmer
Sent: Thursday, 30 May 2013 3:31 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] 9390 GPS RX
On 5/29/2013 9:58 AM, Mark C. Stephens wrote:
Uh, well. No one told me about the heatsink thing
I was sucked in and got this reply:
_ _ _ _ _ _ _
Dear Mark,
Thank you for your interest on Symmetricom Time Display.
Only those listed below are available . The rest are out of stock and no longer
available.
Enclose, please find the special promotional unit price (exclude GST) for your
101 - 200 of 254 matches
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