Do you have a manual?
http://www.marubun.co.jp/product/network/ntp/qgc18e010oqg-att/TS2100_2.pdf
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This is the low-budget version without the front panel display (TS2100L)
On 2/21/2013 11:03 PM, Lizeth Norman wrote:
Use the buttons on the front panel to drill down into the setup menu
and find the dhcp setting.
Have fun
On Thu, Feb 21, 2013 at 10:05 PM, Martin A Flynn mafl...@theflynn.org
Martin,
You're left with telnet and rs-232. The docs available on the net seem
to indicate it's more trouble to build the cable than to do the
programming.
Norm n3ykf
On Fri, Feb 22, 2013 at 7:17 AM, Martin A Flynn mafl...@theflynn.org wrote:
This is the low-budget version without the front
Hi, I have a Picotest U6200A. I´m trying to log the grid frequency
(60Hz) to generate data for my work. I need to get data from every
cycle. I setup their program (it always starts in chinese... very funny)
but seems that it can only log every 100ms. Questions:
1) Is that a limitation of
On 2/21/2013 10:16 PM, Mike S wrote:
On 2/21/2013 10:05 PM, Martin A Flynn wrote:
Hi folks,
I picked up a used TS-2100L for use at a local technology museum. Unit
powers up, locks, and syncs. (all three front panel LED are green)
Using wire shark I can see traffic to the device on
Hi
Don't have a Picotest, but do have similar counters. It's very common for
them to do what looks like a divide of the input frequency before they
measure it. The net result is that you can't measure 60 Hz in 1/60th of a
second. You measure it in 4/60th's of a second instead.
The next problem
Hi Robert,
The only way it would make sense to make the center pin diameter
smaller on a 75 ohm BNC is if the center section of the connector
has dielectric in it. So, I would venture then that if you find a
75 ohm BNC that has dielectric in the mating area, around the pin,
it will be a
Curiosity makes me wonder why you want to measure cycle-by-cycle
variations in the generator frequency.
Are you looking for cycle swing when the load changes?
Or is it a matter of wanting to because you should be able to?
Which, of course, is a great reason for doing all sorts of things!
Hi
Using common WWII coax materials, 75 ohms is roughly the minimum loss per
foot design. 50 ohms is the maximum power handling design. The low loss /
high power duality is what still has us matching transmitters into 50 ohms
and running cable TV at 75 ohms.
Bob
-Original Message-
No, just designing a very wicked PLL and needing statistics of the
frequency derivative... No generator is involved, it´s mains frequency
(but you gave me another idea... thanks!).
Daniel
Em 22/02/2013 11:53, Chuck Harris escreveu:
Curiosity makes me wonder why you want to measure
Actually max power is around 30 ohms. Fifty ohms was a compromise.
Here is a good paper on coax design.
Recommend doing a reset to default and configure as directed there are a lot of
configurable options which can control access to this box
Sent from my iPhone
On Feb 22, 2013, at 7:22 AM, Martin A Flynn mafl...@theflynn.org wrote:
On 2/21/2013 10:16 PM, Mike S wrote:
On 2/21/2013 10:05 PM,
dmend...@gmail.com said:
No, just designing a very wicked PLL and needing statistics of the
frequency derivative... No generator is involved, it´s mains frequency (but
you gave me another idea... thanks!).
There is a lot of noise on the line. I'm not sure if frequency makes sense
on a
People have measured AC mains period (and hence frequency) with very
simple devices. The best is just an AC plug-in power cube and a diode
to square the sine wave then this is connected directly to a DCD input
on a serial port. The Linix PPS driver will time tage each pulse with
a nanosecond
Is wwvb consistent in the testing of there modulation scheme?I find that
My Spectracom 8182 will stay in time sync for several days,and then
loose it for five or six hours. Is any one else experiencing this?
I am thinking of trying my kinemetrics/truetime 60-TF to see if it might
function.
On Fri, Feb 22, 2013 at 10:47 AM, Hal Murray hmur...@megapathdsl.net wrote:
You can also feed the line into a modem control signal on a PC serial port.
(USB probably won't work.) The PPS logic from NTP will count cycles and
record a timestamp on the last one.
Yes RS-232 wants a signal that
Donald from what I have been seeing they are consistent. But there is a 1
hour period up around 1 or 2 pm est that they go back to the old modulation
and that allows time clocks to lock. At least thats what the spectracom
8170 does. Then it says its locked for a very long time even though it
There is a lot of noise on the line. I'm not sure if frequency makes sense
on a cycle to cycle basis.
Hal, it might make sense since the OP is designing a PLL and wants to get a
feel for (short-term) frequency excursions. I would guess the whole point of
his experiment is to quantify this;
Bob,
You're right that conventional period, frequency, or universal counters have
great difficulty measuring (timing) separate events that occur as fast as 60
Hz. A fine exception is the Pendulum CNT-90/91 which is a time-stamping
universal counter. With a few simple GPIB commands, you get
Don;
Yes, that seemed to be where I was headed, too. Thanks for responding.
JimT
Sent from *my* galaxy (Nexus).
On Feb 21, 2013 9:26 PM, Don Latham d...@montana.com wrote:
Hi Jim: I had to make up a little 3-pin to 9-pin adapter using loose
pins. It just kinda hangs there...
Don
James
Just for another data point. I have a new LaCrosse digital clock that uses
the 60kHz WWVB signal to keep time. It is the model WT-8005U-B, shown here.
http://www.lacrossetechnology.com/8005b/index.php It has at least three
times in the last two months jumped time. Twice by an hour and once by
Hi
So far my Casio wrist watch is perfectly happy with the new WWVB modulation
scheme.
Bob
On Feb 22, 2013, at 7:08 PM, Tom Miller tmil...@skylinenet.net wrote:
Just for another data point. I have a new LaCrosse digital clock that uses
the 60kHz WWVB signal to keep time. It is the model
On Fri, 22 Feb 2013 15:16:37 -0800, Tom Van Baak
t...@leapsecond.com wrote:
There is a lot of noise on the line. I'm not sure if frequency makes sense
on a cycle to cycle basis.
Hal, it might make sense since the OP is designing a PLL and wants to get a
feel for (short-term) frequency
Hi
A lot depends on what the real objective is. Is the loop supposed to transfer
all of the 60 Hz bumps and wiggles (wide band loop) or is it supposed to ignore
them (narrow band loop) ? Given that the starting point is 60 Hz wide and
narrow will be relative to that.
Bob
On Feb 22, 2013, at
Scott,
Can you point me at the appropriate documentation so I can default the unit?
Martin
On 2/22/2013 1:06 PM, Scott McGrath wrote:
Recommend doing a reset to default and configure as directed there are a lot of
configurable options which can control access to this box
Martin,
I don't think that I've ever seen a procedure in the man to reset it.
Do you have the protocol set properly for the various ports? Did you
try pinging at different speeds on startup? The docs suggest you
should get and ascii ? as a prompt.
Can you:
log into the router and find out what ip
Hello,
I also don't have a Picotest or similar equipment but I've done similar
things by using the line input of a soundcard. Multiply the recorded
signal with a 60 Hz quadrature oscillator, apply a low pass filter then
do some analysis on the resulting phasor. The stability of the sound
card
Friends,
The grid contains a massive amount of inertia in the rotating
synchronous machinery that generates power. The 'springiness'
of the transmission lines allows local noise and even phase
noise that is caused by loads added to or dropped from the
line. Hal Murray (ICBW) had pictures of
I think you have to ask what is the use that is going to be made of that
number. Do you want to know how well an old synchronous clock will keep time or
do you want to know when there's been an (inductive) phase shift that signifies
the loss of a transmission line? Are you interested in how
Ill see if I can dig up my manual for this used these units a few years ago
Sent from my iPhone
On Feb 22, 2013, at 9:10 PM, Martin A Flynn mafl...@theflynn.org wrote:
Scott,
Can you point me at the appropriate documentation so I can default the unit?
Martin
On 2/22/2013 1:06 PM, Scott
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