Hi
First of a few more data plots (sorry if any are duplicates):
This is the TDEV of a 3810 against a 5071 and a 3801 run at the same time
against the same cesium standard. At its current filter setting, the 3810 is
doing a bit better than the 3801 long term. The 3801 is beating the 3810 by a
Hi
So here’s the same data on the 15 MHz and 10 MHz output’s on a single box.
The phase plot shows that there is indeed some sort of spur coming and going on
at least one of the inputs. Based on the plot of the 10 MHz output from a
couple weeks back, it’s a good bet that the spur is on 10
Hi
Ok, this one is a little different. It’s the ADEV between the 10 MHz and 15 MHz
outputs on the same box. If both were a perfect multiplication of the 5 MHz
OCXO, the plot would be much lower from 0.1 to 10 seconds. There’s something
getting in the way of perfection.
Bob
adev 15 vs
Hi
Here’s a comparison of the EBSCTM, the 3801 and the 3811 all on one page.
Everything inside 10 seconds is the 5071 that is the comparison standard.
Bob
adev on three.pdf
Description: Adobe PDF document
___
time-nuts mailing list --
HI
This one is one of the more significant ones. It shows two Z3810/11/12’s each
running against the 5071. It also shows the two running against each other. All
are on the 15 MHz output. There are two pretty obvious conclusions:
1) From 0.3 to about 30 seconds the GPSDO’s are better than the
Bob, how is the PN?
Glad that after 100s of emails about the serial port on this unit finally
someone is finally posting some real data.
Still surprised that the ADEV is not as good as the 58503A units I got on eBay.
Sent From iPhone
On Nov 17, 2014, at 8:22, Bob Camp kb...@n1k.org wrote:
Hi
This one is the frequency difference between the 10 MHz and 15 MHz output on
one Z3810/11/12 box. It’s a direct result of the phase changes seen on another
plot earlier in this series. Any time you have phase modulation, you have
frequency modulation ….
Just to be very clear- there is no
Hi
I *think* I posted the phase noise plots earlier. I’ll dig them up and post if
I forgot. To many years and not enough coffee ….
Check the last JPEG image. It takes out the ADEV from the 5071 that is part of
the earlier plots.
Bob
On Nov 17, 2014, at 11:47 AM, Said Jackson via time-nuts
Hi
Ok, so I *forgot* to post the phase noise plots. At least a quick check does
not show them on my copy of posts back from the list.
First one is the phase noise on the 10 MHz output.
To say the least, it’s pretty rotten. There are a bunch of spurs out to at
least 10 KHz. The reference is a
Hi
Here’s the phase noise on the 15 MHz. There are a few spurs, and an very real
hump out at the likely frequency of the Lucent switcher. The 15 MHz is pretty
clean compared to most /all of the other units I’ve seen on the surplus market.
I would not multiply this up to 40 GHz with a
Hi
A few more details to add:
The serial com coming out of the GPS has several standard Motorola headers in
it:
@@Eanormal position message
@@EnTRAIM / sawtooth status timing status message
@@Bb Visible satellites message
@@Bo UTC offset message
The first two make sense for a
A wiring diagram of the Z3809A cable interconnect cable was published
earlier on this list. That information appears to be incorrect. The
cable is actually wired pin 1 to pin 15, pin 2 to pin 14, etc.
Another way to describe it is that for each wire in the cable, the pin
numbers on each end of
stewart.c...@gmail.com said:
Perhaps there is a transmit-only UART coded into the FPGA, or perhaps one of
the UARTs is timeshared with the Lucent message, or perhaps there is another
UART chip hidden somewhere on the board.
There is a UART in the MC68301. Page 51 of the data sheet. (They
Hi
Ok so the correct pairs should be:
A 1 15
B 2 14
C 3 13
D 4 12
E 5 11
F 6 10
G 7 11
ground 8 8
Bob
On Nov 4, 2014, at 4:38 AM, Stewart
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
Hi Stewart:
@@Ea see:
http://www.prc68.com/I/AtAt.htm
VP CMC2003 M12
GT+ UT+
Description PC Cmd Cmd RplyPC Cmd Cmd RplyPC Cmd Cmd
RplyPC Cmd Cmd Rply
bro...@pacific.net said:
UARTs are not mandatory, a simple transistor level shifting circuit is all
that's needed for TTL/RS-232 levels.
I think you are confusing UARTs with level shifters.
In the old days, transistors were expensive enough that a 68000 class CPU was
all that could fit on a
Hi Hal:
Yes for level shifting. Most micro controllers have the UART built-in so
that's all that's needed.
I haven't got my boxes so don't know what chips are in them.
Mail_Attachment --
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
Hello all:
A little more digging provides the system name: it's a FLEXENT.
The reference and a document list are in:
http://www.prtc.net/~dixonvaldes/CDMA%20Lazyan2.htm
If I go to alcatel/lucent, I arrive at the following site for the flexent
system:
Alcatel Lucent. I did go to the site and do have an account. But the
documentation is only available to those with a paid subscription or
hardware under warranty.
Regards
Paul
WB8TSL
On Tue, Nov 4, 2014 at 5:41 PM, Don Latham d...@montana.com wrote:
Hello all:
A little more digging provides
Hi
Well, we got these new in the box. Maybe we are in warranty !!!
Bob
On Nov 4, 2014, at 7:31 PM, paul swed paulsw...@gmail.com wrote:
Alcatel Lucent. I did go to the site and do have an account. But the
documentation is only available to those with a paid subscription or
hardware under
OK I will just go try that right out. Maybe not.
Funny thing warranties do tend to run from the Install date.
Regards
Paul
WB8TSL
On Tue, Nov 4, 2014 at 8:13 PM, Bob Camp kb...@n1k.org wrote:
Hi
Well, we got these new in the box. Maybe we are in warranty !!!
Bob
On Nov 4, 2014, at 7:31
Hi
Yes, I would find it very strange if there is any warranty on these at all
other from the auction seller. I’d bet they got sold off as scrap with lots of
bold print about Lucent not wanting anything to do with them ever again.
——
That said - has anybody contacted the auction seller(s)
-boun...@febo.com] On Behalf Of Anthony Roby
Sent: Thursday, October 30, 2014 9:12 PM
To: Bob Stewart; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
Yes I did, with XP running in VirtualBox
-boun...@febo.com] On Behalf Of Anthony Roby
Sent: Thursday, October 30, 2014 9:12 PM
To: Bob Stewart; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
Yes I did, with XP running in VirtualBox
I have now tested 3 pairs of these units (full Z3810AS system), always
in pairs. One Z3811 box was DOA. It drew power at the appropriate
level, but the lights did not light up and there was no response on
the SatStat port. AECI quickly swapped it for a working unit, and
even paid return
Hi
Here’s a thought:
If you are going to “fit” a unit with a more modern GPS and translate it to
“Lucent speak”, are you better off simply starting with an outboard GPS?
The main GPS talks to the second box over the 15 pin connector. One would guess
that what comes over is a pretty
Hi
On Nov 2, 2014, at 4:42 AM, Stewart Cobb stewart.c...@gmail.com wrote:
I have now tested 3 pairs of these units (full Z3810AS system), always
in pairs. One Z3811 box was DOA. It drew power at the appropriate
level, but the lights did not light up and there was no response on
the
System has been fired up for about 48 hours and seems to have settled down a
bit by watching scope trace movement between Lucent and thunderbolt (has been
on for months).
I hooked up Lucent to input of 3586 (sync with thundebolt) and measured 15625
khz with spectrum lab for 8 hours - sample
Here's another reference on driving 10-ish MHz square wave outputs via
digital chips.
A few years ago I hacked my HP Z3816 to covert its 4 - 19.6608 MHz
square wave outputs to be 4 more 10 MHz outputs. In the process I
reverse engineered some of what was there. I found each of these outputs
-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
Hi
I sort of doubt that a GPS aux supply is quite that low current. I have seen
some RTC’s that won’t last a month on a coin cell. My recollection is that the
Oncore backup is closer to that category than the “many years
Hi Arthur,
Now that you mention it, yes, I do remember your post. Thanks for the reminder!
Bob
From: Arthur Dent golgarfrinc...@gmail.com
To: time-nuts@febo.com
Sent: Friday, October 31, 2014 9:20 PM
Subject: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A,
Z3812A
Hi Arthur,
Found your original picture/post. TNX!
http://s906.photobucket.com/user/rjb1998/media/RFTG-uREF1photo1_zps87c505ca.jpg.html
Would you share what you did for a 5 MHz buffer?
Mike
On 10/31/2014 10:20 PM, Arthur Dent wrote:
Bob Stewart bob at evoria.net
“…I have both of my units
Hi
On Oct 31, 2014, at 10:20 PM, Arthur Dent golgarfrinc...@gmail.com wrote:
Bob Stewart bob at evoria.net
“…I have both of my units sitting on the bench. I found that I needed to
connect them together to get the REF1 unit to come out of standby….”
Bob Camp kb8tq at n1k.org
“I suspect
time-nuts@febo.com
Sent: Friday, October 31, 2014 9:22 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
Hi
I sort of doubt that a GPS aux supply is quite that low current. I have seen
some RTC’s that won’t last a month on a coin
] Lucent KS-24361, HP/Symmetricom Z3809A,
Z3810A,Z3811A, Z3812A GPSDO system
Hi
I suspect that somebody will have to figure out what the 15 pin connector /
jumper is doing. On previous RFTG units there was a way to re-wire the
crossover interface to fake out the slave detect process
For those who missed it, Arthur's post is at
https://www.febo.com/pipermail/time-nuts/2010-June/047825.html and the photo is
at
http://i906.photobucket.com/albums/ac262/rjb1998/RFTG-uREF1photo1_zps87c505ca.jpg
Anthony
-Original Message-
From: time-nuts
@febo.com
Sent: Friday, October 31, 2014 12:19 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
I have both of my units sitting on the bench. I found that I needed to connect
them together to get the REF1 unit to come out of standby.
I am
and frequency measurement time-nuts@febo.com
Sent: Friday, October 31, 2014 9:22 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
Hi
I sort of doubt that a GPS aux supply is quite that low current. I have seen
some RTC’s that won’t last
, 2014 12:19 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
I have both of my units sitting on the bench. I found that I needed to
connect them together to get the REF1 unit to come out of standby.
I am using GPSCon to monitor
signal on some pin or other.
Bob From: Anthony Roby ar...@antamy.com
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Thursday, October 30, 2014 2:24 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
measurement time-nuts@febo.com
Sent: Friday, October 31, 2014 11:19 AM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
I have both of my units sitting on the bench. I found that I needed to
connect them together to get the REF1 unit to come out
, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
I have both of my units sitting on the bench. I found that I needed to
connect them together to get the REF1 unit to come out of standby.
I am using GPSCon to monitor and it appears to work fine.
One thing on my units, when I power
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A,
Z3810A, Z3811A, Z3812A GPSDO system
Message-ID: 7c7537c3-d3cb-490f-99f3-d54af04e9...@n1k.org
Content-Type: text/plain; charset=utf-8
Hi
I wonder if anybody has a copy of Ulrich’s source code? If so, there
might
Hi Bob,
I connected 10 MHZ test jack output to a 15 db el-cheepo CATV amp and the
output of that to a 4 way splitter. Splitter outputs went to 3336-3586 and
counter. All seem to like the ref signal. Output of the amp takes makes the
semi-square wave into a sick saw tooth. Amp is only rated
Message: 1
Date: Thu, 30 Oct 2014 21:49:06 -0400
From: Bob Camp To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A,
Z3810A, Z3811A, Z3812A GPSDO system
Message-ID: 7c7537c3-d3cb-490f-99f3-d54af04e9...@n1k.org
Content
Hi
On Oct 31, 2014, at 5:07 PM, Bill Riches bill.ric...@verizon.net wrote:
Hi Bob,
I connected 10 MHZ test jack output to a 15 db el-cheepo CATV amp and the
output of that to a 4 way splitter. Splitter outputs went to 3336-3586 and
counter. All seem to like the ref signal. Output of
Bill:
On cable TV systems, 50 MHz to 500 (or higher) are the forward channel.
(Head-end to client.)
Below 30 MHz is the reverse channel, for data going from the client to the
cable company.
The band 30 to 50 is a cross over zone for the band splitting filters.
It is designed to not amplify the
b...@evoria.net said:
I've noticed the same. In looking at the Satstat program, it appears that
when you enter a location, that's only treated as a hint. There is also a
value you can set to zero that supposedly tells it to come up with the last
hold value. It didn't seem to work for me.
Hi
A $0.15 each dual / quad / hex / octal buffer IC’s will get you 15 dbm per
pair of gates. For under $10 in active parts you can have 30 or 40 outputs. I
suspect that if you look inside the 3812 that’s exactly how they are generating
the 10 MHz you are looking at.
Bob
On Oct 31, 2014,
, October 31, 2014 12:19 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
I have both of my units sitting on the bench. I found that I needed to
connect them together to get the REF1 unit to come out of standby.
I am using GPSCon
time and frequency measurement
time-nuts@febo.com
Sent: Thursday, October 30, 2014 2:24 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
I'm still having no luck with mine. When I power on, the LEDs cycle, the
Fault light
On 10/31/2014 6:14 PM, Bob Camp wrote:
check a DB-9-M and DB-9-F
ITYM DE-9-P and DE-9-S.
Sorry, it's a pet peeve. 'taint no such thing as a DB-9, and the
gender is Pin or Socket because male and female are ambiguous given the
physical construction.
Hi
One other possibility:
The GPS does a fast survey to get going. Then it starts a long / precision
survey. It only stores the result if it finishes the precision survey. A good
survey might be 10, 24, 48 or 72 hours….
Sure would be nice to have some basic info on these beasts ….
Bob
On
time and frequency measurement time-nuts@febo.com
Sent: Friday, October 31, 2014 12:19 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
I have both of my units sitting on the bench. I found that I needed to connect
them together to get
...@burlingtontelecom.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Friday, October 31, 2014 12:19 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
I have both of my units sitting on the bench. I
-nuts@febo.com
Sent: Friday, October 31, 2014 8:27 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A,
Z3810A,Z3811A, Z3812A GPSDO system
Hi
I suspect that somebody will have to figure out what the 15 pin connector
/ jumper is doing. On previous RFTG units there was a way to re
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
...@febo.com] On Behalf Of Bill Riches
Sent: Wednesday, October 29, 2014 4:10 PM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
My system arrived today in original unopened boxes. Hooked up 24
-nuts@febo.com
Sent: Thursday, October 30, 2014 2:24 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
I'm still having no luck with mine. When I power on, the LEDs cycle, the Fault
light is on and the No GPS and Standby lights flash
measurement
time-nuts@febo.com
Sent: Thursday, October 30, 2014 3:24 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A,
Z3810A,Z3811A, Z3812A GPSDO system
I'm still having no luck with mine. When I power on, the LEDs cycle, the
Fault light is on and the No GPS and Standby
, 2014 2:24 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
I'm still having no luck with mine. When I power on, the LEDs cycle, the
Fault light is on and the No GPS and Standby lights flash. When I connect my
GPS antenna
:52 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
I played around today with these interfaces and couldn't get anything out of
them. I still don't have my GPS connected, but I would have thought I'd see
something out of one
of precise time and frequency measurement
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
Hi Anthony,
Did you power cycle both units as part of connecting them together at J5 to J5?
And can you remind me whether you are using the supplied
Hi
I wonder if anybody has a copy of Ulrich’s source code? If so, there might be
somebody on the list willing to rework it for the 3810 series and the more
modern operating systems.
Bob
On Oct 30, 2014, at 1:25 PM, Götz Romahn go...@g-romahn.de wrote:
and here comes another trick:
: Anthony Roby ar...@antamy.com
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Thursday, October 30, 2014 8:17 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
I was finally able to get my units to lock
.
Anthony
Original message
From: Bob Stewart b...@evoria.net
Date: 2014/10/30 21:04 (GMT-06:00)
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
Hi Anthony
tmiller11...@verizon.net said:
I am trying to find out how they triple the 5 MHz to get 15 MHz. Maybe it
can be changed to just double to 10 MHz. There are a few inductors on the
board and that may make for a filter.
The Fourier expansion of a square wave is odd harmonics. To get 15 from 5,
: Tuesday, October 28, 2014 10:42 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
Until you have the two units tied together and GPS ok and the Fault light out,
you won't see the 15 MHz
My system arrived today in original unopened boxes. Hooked up 24 volts and
a gps antenna and it locked in about an hour and 10 MHZ output as compared
with thunderbolt GPS seems to be working just great. No trace movement on
scope using thunderbolt as trigger and looking at Lucent 10 MHZ output.
Hi
I think it’s safe to guess that the full 3810 (3811 + 3812) cost in the
vicinity of $2K when new in 2001.
Bob
On Oct 29, 2014, at 5:09 PM, Bill Riches bill.ric...@verizon.net wrote:
My system arrived today in original unopened boxes. Hooked up 24 volts and
a gps antenna and it locked
Hi
One thing that might help others who are having issues with these units:
Which pins did power go to?
Which pins do you see RX (and maybe TX) data on?
Which cables went where (and their pinout) to interconnect this or that?
What software are you using?
Yes, One could make some pretty
: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A,
Z3810A,Z3811A, Z3812A GPSDO system
Hi
One thing that might help others who are having issues with these units:
Which pins did power go to?
Which pins do you see RX (and maybe TX) data on?
Which cables went where (and their pinout
Message - From: Bob Camp kb...@n1k.org
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Wednesday, October 29, 2014 6:55 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A,
Z3810A,Z3811A, Z3812A GPSDO system
Hi
One thing that might
I played around today with these interfaces and couldn't get anything out of
them. I still don't have my GPS connected, but I would have thought I'd see
something out of one of the ports. I tested the serial port on my PC and that
is working, but I don't see anything of note coming off the
More on the 10 MHz output.
The duty cycle is 60/40%, ground referenced waveform (bottom of waveform at
0 volts). It wants to see 50 ohms for termination. Syncronis with the 15 MHz
sine output and seems to come from a divide by 1.5 divider.
I have more digging to do but it's late.
Regards,
program run under
windows?
Regards,
Tom
- Original Message -
From: Anthony Roby ar...@antamy.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, October 28, 2014 10:52 PM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A
Stu,
Many thanks for the heads-up on htese units. Great deals.
Can you advise the size of these units? Are they full-size 19 rack mount
or the half-size units like the Z3801A?
Can the REF-1 unit (the one with the GPS receiver) be operated separately
from the REF-0 unit?
There is a mod on
Dave,
The seller is offering the REF-0 and REF-1 units at $75 each plus
shipping. When I searched for Lucent KS-24361, I found the
original item with both, as well as the individual units.
--Glen Hoag
h...@hiwaay.net
At 10:22 AM 10/20/2014, you wrote:
Stu,
Many thanks for the heads-up on
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
Stu,
Many thanks for the heads-up on htese units. Great deals.
Can you advise the size of these units? Are they full-size 19 rack mount or
the half-size units like the Z3801A?
Can the REF-1 unit
these are?
Bob - AE6RV
From: Glen Hoag h...@hiwaay.net
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Monday, October 20, 2014 11:04 AM
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A,
Z3811A, Z3812A GPSDO system
Hi Glen,
I'm looking at this unit, but I have to say that I can't make any sense from
the listing. I don't know what the REF-0 and REF-1 units do, and I don't know
whether they need
Stu said:
Power is applied to the connector labeled +24VDC and P1, in exactly the
same way as the earlier RFTG units. Apply +24V to pin 1 and the other side of
the power supply (GND or RTN) to pin 2. In these units, that power supply goes
directly to an isolated Lucent DC/DC converter brick
-boun...@febo.com] On Behalf Of Dave
M
Sent: Monday, October 20, 2014 10:22 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A,
Z3810A, Z3811A, Z3812A GPSDO system
Stu,
Many thanks for the heads-up on htese units. Great deals
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