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Gentlemen,
Using oscilloscopes to measure relative phase has been widely
used for a long time. The setup appears in many H-P Op/Srv
manuals in the adjustment procedure section to calibrate the
instrument timebase to a shop
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From: Pete [EMAIL PROTECTED]
Subject: Re: [time-nuts] Setting Rubidium to match GPS source
Date: Fri, 28 Sep 2007 09:07:29 -0600
Message-ID: [EMAIL PROTECTED]
Pete,
Using oscilloscopes to measure relative phase has been
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Another question, has anyone here used an HP 3575A Gain Phase Meter
(1Hz - 13MHz) to set their Rubidium to match the GPS sourced 10 MHz
clock? Would that method be more accurate to line the Rubidium up
than using a 12
and frequency measurement
Subject: Re: [time-nuts] Setting Rubidium to match GPS source
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Chris,
The 3575A does NOT have adequate phase resolution to set an Rb
source to match a GPSDO. A few, now rather old, phase meters were
sold
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CHazlitt wrote:
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Hello again,
Another question, has anyone here used an HP 3575A Gain Phase Meter (1Hz -
13MHz) to set their Rubidium to match the
In a message dated 9/28/2007 02:07:08 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
In this context, how stable is a GPSDO? If I used a Cesium for the sync
input, how much fuzz would I see on a GPSDO output if I watched it wander
back and forth for a day?
Hi HMurray,
depends on
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In a message dated 9/28/2007 02:07:08 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
In this context, how stable is a GPSDO? If I used a Cesium for the sync
input, how much fuzz would I see on a GPSDO output if I
-Original Message-
From: [EMAIL PROTECTED]
To: time-nuts@febo.com
Sent: Fri, 28 Sep 2007 10:48 pm
Subject: Re: [time-nuts] Setting Rubidium to match GPS source
In a message dated 9/28/2007 02:07:08 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
In this context, how stable is a GPSDO
In a message dated 9/28/2007 14:13:34 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
I am interested about this OEM PCB with external OCXO, due to the reason I
have 3 HP OCXO 10811 and the other one, so please put me on the waiting list.
Hi Ernie,
no problem, 10811's are great.
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[EMAIL PROTECTED] wrote:
Hi HMurray,
depends on the GPSDO. On the Fury for example you can expect the unit to
wander less than +-15ns back and forth over a period of 1 Day. That's a
deviation of about 3.5E-013 or so
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Put me on the list. I'm interested in using it with LPRO-101 units.
Scott
[EMAIL PROTECTED] wrote:
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In a message dated 9/28/2007 02:07:08
In a message dated 9/28/2007 16:14:00 Pacific Daylight Time, [EMAIL PROTECTED]
writes:
Put me on the list. I'm interested in using it with LPRO-101 units.
Scott
Got it Scott,
bye,
Said
** See what's new at http://www.aol.com
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In a message dated 9/28/2007 16:02:30 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Surely a height error of 2m leads to a timing error of about 6.6ns for a
particular SV when that SV is directly overhead.
When the SV
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[EMAIL PROTECTED] wrote:
In a message dated 9/28/2007 16:02:30 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Surely a height error of 2m leads to a timing error of about 6.6ns for a
particular SV when that SV is
Our EFC output is 0V to 5V, so you can set the 10811 with the
mechanical adjust to have a nominal voltage of 2.5V, I did that to
one of my 10811's, works perfectly.
If an OCXO needs -5V to 5V (some Wenzels need that for example) then
a simple external Opamp circuit can shift the range from
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In a message dated 9/28/2007 17:28:22 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
symmetric about the actual propagation delay, so in this case quoting
the propagation delay error range perhaps imparts a pessimistic
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Hello again,
Another question, has anyone here used an HP 3575A Gain Phase Meter (1Hz -
13MHz) to set their Rubidium to match the GPS sourced 10 MHz clock? Would
that method be more accurate to line the Rubidium up than
Chris,
The 3575A does NOT have adequate phase resolution to set an Rb
source to match a GPSDO. A few, now rather old, phase meters were
sold for this purpose, but they used a strip chart recorder to average
phase shift over 1 to 24 hour measurement times required great
investments of time to
Pete wrote:
Chris,
The 3575A does NOT have adequate phase resolution to set an Rb
source to match a GPSDO. A few, now rather old, phase meters were
sold for this purpose, but they used a strip chart recorder to average
phase shift over 1 to 24 hour measurement times required great
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Pete wrote:
Chris,
The 3575A does NOT have adequate phase resolution to set an Rb
source to match a GPSDO. A few, now rather old, phase meters were
sold for this purpose, but they used a strip chart recorder to average
Subject: Re: [time-nuts] Setting Rubidium to match GPS source
Chris,
The 3575A does NOT have adequate phase resolution to set an Rb
source to match a GPSDO. A few, now rather old, phase meters were
sold for this purpose, but they used a strip chart recorder to average
phase shift over 1
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