Google Throttlestop. I use it to keep my microprocessor from idling
back, but it allows full manipulation of the system reference. The only
caveat is not to go wild overclocking, as this will cause havoc. I know
from experience!! :-)
73... Jon W1MNK
On 3/9/2013 11:45 AM, Al K0VM wrote:
Does anyone know of a utility to adjust the internal time reference on
a PC?
( NOT sync clock time to network time )
----
I recently added a second drive on my PC and installed Windows 8in
a dual boot configuration with Win XP.
On Win8, Windows 8 Clock time looses about 3 minutes and 49 seconds
per day ( 2650 ppm ).
Booted on Windows XP, with the same MB, the Clock time lost is
less than 5 seconds per day.
I remember three years ago when I initially set up XP, I used some
sort of utility to adjust the internal time reference, but can not
find it now.
----
On Windows 8, using digital modes with VAC, I encountered as
significant drift in the latency through VAC.
So I set up a test (using CHUtime ticks ) where I could measure the
latency differential between the FLex5000 RCA Line out and PSDR VAC
output routed through VAC, a VAC audio repeater and a USB sound card
channel. In six measurement runs of six minutes each, the average
change in latency differential was 161 milliseconds per minute ( 2670
ppm ). The Win 8, tests included runs with two different versions of
PSDR, three different versions of VAC and heavily used CPU vs. lightly
loaded CPU.
Repeating the same test, booted on Windows XP, there was no easily
observable VAC latency drift.
----
Both the Windows 8 Clock time and the VAClatency drift have the same
(~2660 ppm error ), which I assume is because they are driven from the
same interruptsource.
----
I can and do use a utility to sync the clock time to network time, but
that does nothing for the VAC latency drift.
Does anyone know of a utility to adjust the internal time reference on
a PC?
AL, K0VM
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This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for
posting topics related to SDR software innovation and other technical SDR
topics.
