SATURDAY EVENING
Gang,
More update and good news... I removed the Caritronics switcher
supply module and connected the Cisco ADP-30RB supply in its
place. I'm pleased to announce that my DATUM 9390 is happy. The
power supply noise is less than 5 mV on all three rails under
load. I'm letti
That is exactly what mine does when it has marginal power on the 48v input. You
may find that 50-52vdc works.
On Jan 13, 2013, at 0:14, Joseph Gray wrote:
> After many years of faithful service, my Z3801A has stopped working.
> It seems to be going through a loop at powerup. All of the LEDs bl
Suspicious of a power supply issue.
Good luck.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Joseph Gray
Sent: Saturday, January 12, 2013 11:14 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Z380
After many years of faithful service, my Z3801A has stopped working.
It seems to be going through a loop at powerup. All of the LEDs blink
at once, then they blink in order, left to right. After several
seconds, this is repeated. I'll have to clear the bench of the project
I was working on so I can
On 1/12/2013 7:40 AM, Magnus Danielson wrote:
>
> At 250 ps you use interpolators. The typical coarse counter would be 100 MHz
> and that means 10 ns in raw resolution, but you would then use an
> interpolator to get higher resolution. By getting a start and stop measure,
> roughly tau time in
In Bell Systems Technical Journal, v9:i1 January 1930, p78:
Time Service
Arrangements have been made in many parts of the country to
furnish subscribers who desire it, accurate information as to the
time of day. A subscriber wishing the information asks for or di
Hi
There can be many interesting variations in air quality. I've worked several
places where they found that the stock room wasn't the right place to keep
silver plated stuff. Being down wind of this or that can be all it takes.
Bob
On Jan 12, 2013, at 2:56 AM, Attila Kinali wrote:
> On Fri,
On 01/12/2013 01:37 PM, Azelio Boriani wrote:
OK, but I wasn't able to find a single shot resolution specification in its
datasheet. Looking at the formulas to determine the accuracy, it looks like
the minimum resolution is 250pS... anyway, by reading the user and service
manual I found out that
OK, but I wasn't able to find a single shot resolution specification in its
datasheet. Looking at the formulas to determine the accuracy, it looks like
the minimum resolution is 250pS... anyway, by reading the user and service
manual I found out that the PM6685 has an EEPROM memory and no battery i
My impression is that old software that make their own timings
and devices depend on those timings may have issues due to the
fact that there is a delay from write to LPT to bits really appearing on
the DB25, albeit small but not that much predictable as it has
Windows plus USB in between. That be
rich...@karlquist.com said:
> I have an HP laptop with docking station and the docking station provides
> serial and parallel ports. The question is: are these "real" ports (just
> like built ins) or do they behave as USB dongle versions? One could easily
> imagine that the docking station did
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