What is autocorrelation time with respect to Data Acquisation System

what is autocorrelation time with respect to Data Acquisation System. thew hardware i am using is PCi -6034E CARD AND SCXI_1102 and TC-2095 terminal block

Suresh;
Unfortunately,NI doesn't spec that.
For a complete list of specs for that particular DAQ board and SCXI module, refer to their Users Manual.
Regards
Filipe A.
Applications Engineer
National Instruments

Similar Messages

What is a Task with respect to Transport Organiser

Kindly can anyone explain what is a task with respect to Transport Organiser.
With Best Regards
Mamatha.B

Hello Mamatha
A task is nothing else but a container for changes made by one ore more developers.
<b>Tasks are a means to organize your transport request</b>. For example, if you have a team developing on the same subject then you create a single request and for each team member a task. Every team member collect her changes in her own task. Sooner or later the development is finished and one task after another will be released. After finishing the final tests the team leader will release the entire request.
Note that this is just one possible scenario for organizing transports.
Regards
Uwe

Can anyone explain what "multi-tenant" means with respect to OAM and OIF?

Hi,
I noticed that OAM 11gR2 has several additional authentication modules and schemes out-of-the-box for "MT" or multi-tenant. I've actually tried them, but am not clear exactly what their purpose is?
As a test, I configured the FederationMT module and FederationMTScheme to protect a test resource in OAM, and then when I access the resource, I first get a page with one field for username and a "Sign In" button. After I enter a user name, it goes to a form login page and I can log into the OIF IdP, and that's about it. I guess that I don't see what this accomplishes?
If anyone is familiar with this, please advise.
Thanks,
Jim

Hi,
Thanks for the metalink article. I've read that, and I can understand what the article is describing, but I'm not 100% clear how that relates to the configuration parameters in the FederationMTPlugin. The article talks about a mapping file, but I don't see something like that for configuring the TenantDismbiguationPlugin?
The first step in FederationMTScheme plugin is a TenantDisambiguationPlugin, which takes two parameters:
KEY_IDENTITY_STORE_REF
KEY_FEDERATED_TENANTS (a comma-separated list of "some things")
The steps/orchestration for the FederationMTPlugin has:
Initial Step: FedUserAuthenticationPlugin
TenantDisambiguationPlugin OnSuccess: FedAuthenticationPlugin OnFailure: UserIdentificationPlugin
UserIdentificationPlugin OnSuccess: UserAuthenticationPlugin OnFailure: failure
UserAuthenticationPlugin OnSuccess: success OnFailure: failure
FedAuthnRequestPlugin OnSuccess: success OnFailure: FedUserAuthentication
FedUserAuthenticationPlugin OnSuccess: success OnFailure: TenantAmbiguationPlugin
[The OnError results for all steps are failure, so I haven't shown them.]
So, the first step is the FedUserAuthenticationPlugin (AssertionProcessing), and if that fails, the next step is the TenantDisambiguationPlugin.
I guess all of my questions are around what that TenantAmbiguationPlugin does, and how it works?
I'm guessing that what you enter on the 1st webpage, which asks for a Tenant, is matched against the comma-separated list that is in the plugins "KEY_FEDERATED_TENANTS" parameter.
Is that correct?
But:
a) What happens if there is a match of what you entered vs. what's in the "KEY_FEDERATED_TENANTS" list?
b) What happens if there is NOT a match of what you entered vs. what's in the "KEY_FEDERATED_TENANTS" list?
That article you mentioned calls for a mapping file, that maps what is entered (the tenant) to a user identity store, but where is that in the TenantDisambiguationPlugin's parameters? The only other parameter for that plugin is the "KEY_IDENTITY_STORE_REF" parameter.
Having said that, I described the steps and step orchestration in the FederationMTPlugin above. If the TenantDisambiguationPlugin is suppose to somehow map what's entered to a user identity store name, then, with respect to the FederationMTPlugin, is that mapped user identity store used for the UI and UA steps (i.e., as the "KEY_IDENTITY_STORE_REF" for the UI and UA steps)?
Thanks for your help with this. Oracle's documentation certainly merits some improvement :(...
Jim

Applying Currency conversion with respect to Date in WAD result

Hi Gurus,
We have a web report with different currencies.
Now the business requested to create a down drop with the dates as per the data when we load the exchange rates in TCURR table.
So using the date on the web report, business wants to change the report values for different currencies (USD, EUR, CHF..) as per their wish.
Now the technical challenge is ,
We don't have currency types used in the cube, We are not maintaining a Unique currency values in the target (Cube) and if incase we overcome with all the above challenges.
In web report when we select the date , the report should not have any effect or change the result output unless after selecting the dates must click required currency button to convert the result.
The report should only change when we press the convert to different currency button.
So,Gurus please help me how to achieve this
Regards,
chandu

Hi,
I see that the function module is converting the FLOAT value to the internal ABAP date format (YYYYMMDD) - this is the correct format in which the date value is stored internally in ABAP. Even your info object that you used in your DSO if defined with property type 'DATS' would expect the value in this format only.
Unless I did not understand your issue, the function module does the job and you don't need to add any additional patching for the format you are expecting.
Regards,
JK

What new in BPM with respective to PI7.0 and PI7.1

Hi Guys,
Do any one give the difference/enhancements in BPM with respect to PI7.0 and PI7,.1
Thanks,
Rajeev.

hi rajeev
this will give some idea
/people/udo.paltzer/blog/2007/04/26/new-sap-netweaver-process-integration-release-planned-for-2007
bvr

HOWTO: Gnome 2 with up-to-date core system

This manual for clear install system only. Use it at your own risk. There is no guarantee of future without conflicts between the dependencies. If you want global upgrade (pacman -Syu) after Gnome 2 installation, make sure you masked all Gnome 2 packages in /etc/pacman.conf.
Task: Gnome 2 (from Arch Rollbak Machine) with up-to-date system packages
Step 1. Install a core system.
Install new core system with netinstall cd or with core cd. If you use core cd, make sure you update your system with "pacman -Syu" after installation.
Step 2. Xorg, drivers, sound
Usual Xorg, drivers and sound installation with wiki installation guide =]
Step 3. Gnome 2
Replace appropriate lines in /etc/pacman.conf with:
[core]
#Include = /etc/pacman.d/mirrorlist
Server = http://arm.konnichi.com/2011/04/29/core/os/i686
[extra]
#Include = /etc/pacman.d/mirrorlist
Server = http://arm.konnichi.com/2011/04/29/extra/os/i686
[community]
#Include = /etc/pacman.d/mirrorlist
Server = http://arm.konnichi.com/2011/04/29/community/os/i686
Update and install gnome 2:
pacman -Sy gnome
or with gnome-extra meta-package:
pacman -Sy gnome gnome-extra
Step 4. Conflicts and fix for them
Gstreamer0.10-plugins require neon, but newest neon not can be installed (krb5 and heimdal conflict).
Some packages (pidgin, for example) require cyrus-sasl-plugins, but newest cyrus-sasl-plugins not can be installed (krb5 and heimdal conflict).
We can install old neon and old cyrus-sasl-plugins for fix this problem (see 5 step also):
Replace appropriate lines in /etc/pacman.conf with:
[extra]
#Include = /etc/pacman.d/mirrorlist
Server = http://arm.konnichi.com/2011/05/05/extra/os/i686
Update and install neon and cyrus-sasl-plugins:
pacman -Sy neon cyrus-sasl-plugins
Well, now we can install gstreamer0.10-plugins and pidgin from up-to-date repositories. See step 5.
Step 5. Final.
Rollback commented lines in pacman.conf (come back to up-to-date repositories):
[core]
Include = /etc/pacman.d/mirrorlist
#Server = http://arm.konnichi.com/2011/04/29/core/os/i686
[extra]
Include = /etc/pacman.d/mirrorlist
#Server = http://arm.konnichi.com/2011/04/29/extra/os/i686
[community]
Include = /etc/pacman.d/mirrorlist
#Server = http://arm.konnichi.com/2011/05/05/community/os/i686
Update:
pacman -Syy
and install other packages which you need. For me:
pacman -S gstreamer0.10-plugins firefox pidgin
Warning! There is no guarantee of future conflicts between the dependencies. If you want global upgrade (pacman -Syu) after Gnome 2 installation, make sure you masked all Gnome 2 packages in /etc/pacman.conf.
I hope this helps someone.
P.S.: Sorry for my bad english =]

wonder wrote:i really don't want that to our wiki. it gives the impression we are supporting gnome 2
ngoonee wrote: I concur with wonder
ewaller wrote: Yeah, you guys are correct. I missed that it was Gnome 2
wonder wrote: basically what are you explaining to me is that you don't have any stability issues but instead you prefer old versions. in this case arch is not for you and you prefer a distribution like debian
With all due respect to the Arch big dogs, I respectfully, completely disagree with your stance regarding Gnome 3.
Wouldn't the above quotes be a perfect example of group think? http://en.wikipedia.org/wiki/Groupthink
Why are all the Gnome 2 users expected to just roll over and comply to Gnome's force feeding desktop users to test the Shell that was obviously designed for a system without mouse intergration, ie tablets, etc?
I come to the force feed testing conclusion based on the following facts:
1) Gnome switched libraries and or dependencies that made it nearly if not completely impossible to run Gnome 2 and 3 DE on the same root system.
2) Gnome did not implement the fall back mode features that would have made Gnome 3 a usable replacement for Gnome2.
3) Gnome knowingly released a seriously broken for the desktop with version 3.
4) Gnome must have focused all development resources on Gnome shell designed for the tablet (big new potential market) because of all the missing features in "fallback" aka "desktop" mode.
5) Gnome appears to have turned their back on regular desktop users, at least those who prefer to use a mouse.
If the desktop users debug the Shell, it will be closer to prime time during the next predicted big computer marketing thing, the tablet.
Isn't Linux supposed to be all about community, choice, contribution, etc? Does this include Arch?
If someone has figured out a way to avoid the Gnome 3 train wreck, and retain his version of the best of an Arch/Gnome2 system, more power to him...
If that someone has taken the time to document his accomplishments, has he not contributed by sharing that info?
Out of concern for this thread getting moved, lost or deleted in the future, and to have neocrust's info available to the most people ................
I'd like to suggest an alternative to what has been discussed here so far. How about a link at the bottom of the Gnome wiki page with a title like, Gnome 2 on Arch "UNOFFICIAL"?
If that's agreeable to the Arch big dogs, I'd gladly donate an account on my website http://www.jeffstory.org/wordpress/ if neocrust would be interested in maintaining and updating it.
Oh, and regarding the last quote by wonder, would it have been more appropriate to suggest an alternative DE rather than basically saying, go away from Arch? I really prefer Arch, so I chose to switch to XFCE rather than distros... If I had more Linux smarts, Id have likely taken the same path as neocrust.
Last edited by jeff story (2011-06-08 17:22:16)

Is DASYLab compatible with Yokogawa MW100 Data acquicition system?

Im using a Yokogawa MW100 DAQ and are intrested in using DASYLab for more trouble free signal presentation. Is DASYLab compatible with Yokogawa products? I've tried to search for Yokogawa drivers but failed.

I don't know of a driver for it. But, if you have the Modbus option, DASYLab 12 will support that.
From their web site:
A large data acquisition system of up to 360 channels can be assembled using multiple MW100s and standard MODBUS TCP Ethernet communications. When equipped with the /M1 math option, the MW100 can acquire up to 300 channels of external data from additional MW100 units or other devices such as a PLC using MODBUS TCP communications. This provides a total system capacity of 360 channels (60 built-in measure channels + 300 external).
Serial MODBUS RTU communications (RS- 232 or RS-422A/485) can be ordered as a separate option with the same capability.
- cj
Measurement Computing (MCC) has free technical support. Visit www.mccdaq.com and click on the "Support" tab for all support options, including DASYLab.

Location of log directory with respect to data guard

I am working with Oracle 10g in Linux platform
I was during a switchover from primary to standby which failed due to the incorrect settings of log_file_name_covert parameter . To debug this case I was going through Oracle Documentation material for Data Guard ....http://download-uk.oracle.com/docs/cd/B19306_01/server.102/b14239/troubleshooting.htm
There I came across this para
When the switchover to change the role from primary to physical standby was
initiated, a trace file was written in the log directory. This trace file contains the
SQL statements required to re-create the original primary control file. Locate the
trace file and extract the SQL statements into a temporary file. Execute the
temporary file from SQL*Plus. This will revert the new standby database back to
the primary role.
I was not able to understand what the trace file and log directory means ? Which is the location of log directory ?
Can anyone please explain ?

It was talking about a trace will be placed under your background dump destination. As you would have using
alter database backup controlfile to trace;Check your background dump destination where your alert log is.

Problem with apply changes on master-detail with respect to date handling

dear sir,
i have one tabler where in i have created from_Date and to_date as varchar2(30) each. I stored the from date as 'dd-mon-yyyy hh24:mi' I had written before header process for calculating no of days between from_Date and to_Date using the said format. If to_Date is null then first i store the value as
to_char(sysdate,'dd-mon-yyyy hh24:mi') and then convert it as to_Date(substr(to_Date,1,17),'dd-mon-yyyy hh24:mi'). this calculation of days procedures works fine in sql command mode.
when i am handling through master-detail page i works fine when there is null value inf to_Date vc2 column. if i store using date picker dd-mon-yyyy hh24:mi, the data is getting stored but subsequent edit through master detail give error as ora-01722 unable to fetch row. Manually if i set the to_Date as null pages works fine. I spent lots of time and unable to understand the mistake i do.
if anybody could help me, i will be much obliged.
thanking you,
yours
dr.s.raghunatha

I think the best would be if you create an example on apex.oracle.com and I will debug it.
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.opal-consulting.de/training
http://apex.oracle.com/pls/otn/f?p=31517:1
------------------------------------------------------------------------------

Getting the Latest status with respect to DATE entered

Hi guyz, kindly help me in this scenario:
I have a DSO and a CUBE....
DSO:
cust
status code
status date
RAW DATA
cust               status code               status date
payer1                    1                      12/31/2013
payer1                    3                       1/3/2014
payer2                    4                       12/15/2013
payer2                    2                        1/10/2014
CUBE:
cust
0calday
qty (KF)
RAW DATA
cust                    0calday                    qty
payer1                1/1/2014                    10
payer1                1/2/2014                    20
payer1                1/3/2014                    30
payer1                1/4/2014                    40
payer1                1/5/2014                    50
payer2                1/1/2014                    60
payer2                1/2/2014                    70
payer2                1/3/2014                    80
payer2                1/4/2014                    90
payer2                1/5/2014                    100
I need to have this report: (for example I entered 1/1/2014 - 1/5/2014)
cust               status code               0calday              qty
payer1                   1                       1/1/2014              10
payer1                   1                       1/2/2014              20
payer1                   3                       1/3/2014              30
payer1                   3                       1/4/2014              40
payer1                   3                       1/5/2014              50
payer2                   4                       1/1/2014              60
payer2                   4                       1/2/2014              70
payer2                   4                       1/3/2014              80
payer2                   4                       1/4/2014              90
payer2                   4                       1/5/2014              100
Is this possible in query? Or do I need to do this in start routine?
By the way, I can already show the QTY figures, I used CONSTANT SELECTION..My problem now is how to the STATUS CODE..How will I do this?
Thank you!
Loed

Loed,If you are flexible with modeling level changes then i would suggest to stamp the values of status and status date against payer in cube.
Add the two objects ion cube.Do a lookup on the DSO from cube in End routine and based on payer fetch the value of status and status date against each payer.
Now once you have the complete data in the cube then at reporting level to get the correct status based on the validity dates you can refer my blog.
Status of Tickets based on their Dates
PS:If you need assistance in the coding part then let me know.
Regards,
AL

What do I do with out of date Acrobat Pro? Keep using it or uninstall it?

I need to update my Acrobat Pro 9.5.3 for use with my CS5 Creative Suite. Are you saying it is no longer possible? Then how do I stop that darn Acrobat Update Installer from popping up all the time? Should I be worried about not upgrading (spending more money) when I am running Yosemite 10.10.2 on my iMac?

Hi Deboah,
You can download and install the updates for Acrobat 9 from: ftp://ftp.adobe.com/pub/adobe/acrobat/win/9.x/
Acrobat 9 has not been tested on Mac Yosemite and you might face compatibility issues with it.
Regards,
Rave

My computer is having a real hard time with the up date

My e mail stopped opening things. so I'm trying to find out what is wrong. I see an update is needed and I try but I get that error code. I have windows 8. (and hate it) what do I do?

vnlgaitan wrote:
My e mail stopped opening things.
I have no idea what this means.
You also write about an error code, but fail to provide it.

What is the Policy with Respect to Government Searches

How will Adobe respond to requests by governments to search Creative Cloud accounts/storage spaces?

Peter please see our current Privacy Policy available at http://www.adobe.com/privacy/policy.html.

[SOLVED] Long time with excessive disk access before system reboot.

I feel I would be grateful for some help here. It's my first go at Arch Linux having used Xubuntu for several years. It may be I'm missing something obvious but then I would be happy if someone could point me in the right direction.
Problem: When I do a system restart by issuing
$ systemctl reboot
I get the following output
Sending SIGTERM to remaining processes...
Sending SIGKILL to remaining processes...
Unmounting file systems.
Unmounted /sys/kernel/debug.
Unmounted /dev/hugepages.
Unmounted /dev/mqueue.
Not all file systems unmounted, 1 left.
Disabling swaps.
Detaching loop devices.
Detaching DM devices.
Unmounting file systems.
Not all file systems unmounted, 1 left.
Cannot finalize remaining filesystems and devices, giving up.
Successfully changed into root pivot.
Unmounting all devices.
Detaching loop devices.
Diassembling stacked devices.
mdadm: stopped /dev/md126
[ 1654.867177] Restarting system.
However, after the last line is printed, the system does not reboot immediately but hangs for about 2 minutes with heavy disk activity. I can't say if it is read or write or both, but the led of my HDD is lit constantly. When this activity stops, the machine reboots.
$ systemctl poweroff
works as expected, i.e. shuts down immediately without excessive disk access.
I see this behaviour both with the installed Arch system and when I run the live installation/recovery CD. It is also the same if I boot into the busybox rescue shell and then restarts the machine from there. It also does not seem to matter if any partition on the disk is is mounted or not, the behaviour is always the same with 2 min. heavy activity before reboot.
System setup:
Sony Vaio VPZ13. Intel Core i5 M460, 4GB ram, 2x64GB SSD in RAID0 configuration via bios setting (a.k.a. fake raid), partitioned like:
windows boot
windows system
linux swap
linux "/"
linux "/home"
So it's a dual boot setup with Windows 7.
The raid array is assembled by mdadm, and I have mdadm_udev among my mkinitcpio.conf hooks (after blocks but before filesystems).
Snip from journalctl log showing actions when reboot has been issued:
jan 18 12:24:23 wione systemd[1]: Stopping Sound Card.
jan 18 12:24:23 wione systemd[1]: Stopped target Sound Card.
jan 18 12:24:23 wione systemd[1]: Stopping Bluetooth.
jan 18 12:24:23 wione systemd[1]: Stopped target Bluetooth.
jan 18 12:24:23 wione systemd[1]: Stopping Graphical Interface.
jan 18 12:24:23 wione systemd[1]: Stopped target Graphical Interface.
jan 18 12:24:23 wione systemd[1]: Stopping Multi-User.
jan 18 12:24:23 wione systemd[1]: Stopped target Multi-User.
jan 18 12:24:23 wione systemd[1]: Stopping Login Prompts.
jan 18 12:24:23 wione systemd[1]: Stopped target Login Prompts.
jan 18 12:24:23 wione systemd[1]: Stopping Getty on tty1...
jan 18 12:24:23 wione systemd[1]: Stopping Login Service...
jan 18 12:24:23 wione login[333]: pam_unix(login:session): session closed for user root
jan 18 12:24:23 wione login[333]: pam_systemd(login:session): Failed to connect to system bus: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
jan 18 12:24:23 wione systemd[1]: Stopped D-Bus System Message Bus.
jan 18 12:24:23 wione systemd[1]: Stopped Getty on tty1.
jan 18 12:24:23 wione systemd[1]: Stopping Permit User Sessions...
jan 18 12:24:23 wione systemd[1]: Stopped Permit User Sessions.
jan 18 12:24:23 wione systemd[1]: Stopped Login Service.
jan 18 12:24:23 wione systemd[1]: Stopping Basic System.
jan 18 12:24:23 wione systemd[1]: Stopped target Basic System.
jan 18 12:24:23 wione systemd[1]: Stopping Dispatch Password Requests to Console Directory Watch.
jan 18 12:24:23 wione systemd[1]: Stopped Dispatch Password Requests to Console Directory Watch.
jan 18 12:24:23 wione systemd[1]: Stopping Daily Cleanup of Temporary Directories.
jan 18 12:24:23 wione systemd[1]: Stopped Daily Cleanup of Temporary Directories.
jan 18 12:24:23 wione systemd[1]: Stopping Sockets.
jan 18 12:24:23 wione systemd[1]: Stopped target Sockets.
jan 18 12:24:23 wione systemd[1]: Stopping D-Bus System Message Bus Socket.
jan 18 12:24:23 wione systemd[1]: Closed D-Bus System Message Bus Socket.
jan 18 12:24:23 wione systemd[1]: Stopping System Initialization.
jan 18 12:24:23 wione systemd[1]: Stopped Setup Virtual Console.
jan 18 12:24:23 wione systemd[1]: Unmounting Temporary Directory...
jan 18 12:24:23 wione systemd[1]: Unmounted Temporary Directory.
jan 18 12:24:23 wione systemd[1]: Unmounted /home.
jan 18 12:24:23 wione systemd[1]: Starting Unmount All Filesystems.
jan 18 12:24:23 wione systemd[1]: Reached target Unmount All Filesystems.
jan 18 12:24:23 wione systemd[1]: Stopping Local File Systems (Pre).
jan 18 12:24:23 wione systemd[1]: Stopped target Local File Systems (Pre).
jan 18 12:24:23 wione systemd[1]: Stopping Remount Root and Kernel File Systems...
jan 18 12:24:23 wione systemd[1]: Stopped Remount Root and Kernel File Systems.
jan 18 12:24:23 wione systemd[1]: Starting Shutdown.
jan 18 12:24:23 wione systemd[1]: Reached target Shutdown.
jan 18 12:24:23 wione systemd[1]: Starting Save Random Seed...
jan 18 12:24:23 wione systemd[1]: Starting Update UTMP about System Shutdown...
jan 18 12:24:23 wione systemd[1]: Started Save Random Seed.
jan 18 12:24:23 wione systemd[1]: Started Update UTMP about System Shutdown.
jan 18 12:24:23 wione systemd[1]: Starting Final Step.
jan 18 12:24:23 wione systemd[1]: Reached target Final Step.
jan 18 12:24:23 wione systemd[1]: Starting Reboot...
jan 18 12:24:23 wione systemd[1]: Shutting down.
jan 18 12:24:23 wione systemd-journal[189]: Journal stopped
-- Reboot --
Since I have used Xubuntu without hassle for several years, I first thought the problem may be related to systemd reboot and something in my system setup. But I have tried the Fedora 17 live CD and rebooting there works as expected. So, since it works in one systemd distro, it should work with Arch as well.
Then I thought that it maybe had something to do with the raid-array, something along the lines of
https://bugzilla.redhat.com/show_bug.cgi?id=752593
https://bugzilla.redhat.com/show_bug.cgi?id=879327
But then I found the shutdown hook for mkinitcpio and now I see that the array is stopped and dissassembled. So thats not the problem either. (Or thats what I guess at least.)
Unfortunately I'm out of ideas. Any help would be grateful.
Last edited by wingbrant (2013-02-02 22:20:20)

It turned out that the magic word for me was "reboot=pci" on the kernel command line. With that option set it works lika a charm The machine reboots nice and clean.

What is causing Time Machine to momentary freeze my system?

Every 60 minutes when time machine starts its backup routine my entire system momentarily freezes. Audio stops, cursor freezes, then a few moments later the system is running as usual. I have disabled drive sleep, display sleep. The backup drive is an internal drive. Memory is usually between 45% and 65% capacity - not maxed out. CPU usage is minimal. Most of the time I am programming, so this is happening during basic text editing, not during cpu/memory intensive audio/video/3d processing. I'm on a late 2008 mac pro with 10gigs of ram, and a new radeon 5770 video card. It was also happening with the stock video card that died on the reboot after I updated to 10.8.3 :-{.
3/27/13 8:10:42.488 PM com.apple.backupd[25861]: Starting automatic backup
3/27/13 8:10:43.076 PM com.apple.backupd[25861]: Backing up to: /Volumes/Spruce/Backups.backupdb
3/27/13 8:11:00.900 PM com.apple.backupd[25861]: Using file event preflight for Pine
3/27/13 8:11:01.090 PM com.apple.backupd[25861]: Will copy (4.1 MB) from Pine
3/27/13 8:11:01.092 PM com.apple.backupd[25861]: Found 117 files (4.1 MB) needing backup
3/27/13 8:11:01.113 PM com.apple.backupd[25861]: 1.04 GB required (including padding), 1.3 TB available
3/27/13 8:11:40.093 PM com.apple.backupd[25861]: Copied 4413 files (48.9 MB) from volume Pine.
3/27/13 8:11:40.119 PM com.apple.backupd[25861]: Using file event preflight for Pine
3/27/13 8:11:40.123 PM com.apple.backupd[25861]: Will copy (341 KB) from Pine
3/27/13 8:11:40.124 PM com.apple.backupd[25861]: Found 14 files (341 KB) needing backup
3/27/13 8:11:40.125 PM com.apple.backupd[25861]: 1.03 GB required (including padding), 1.3 TB available
3/27/13 8:11:42.876 PM mdworker[25875]: Unable to talk to lsboxd
3/27/13 8:11:43.000 PM kernel[0]: Sandbox: sandboxd(25876) deny mach-lookup com.apple.coresymbolicationd
3/27/13 8:11:44.725 PM sandboxd[25876]: ([25875]) mdworker(25875) deny mach-lookup com.apple.ls.boxd
3/27/13 8:11:46.272 PM com.apple.backupd[25861]: Copied 709 files (3.1 MB) from volume Pine.
3/27/13 8:11:46.886 PM com.apple.backupd[25861]: Created new backup: 2013-03-27-201146
3/27/13 8:11:48.315 PM com.apple.backupd[25861]: Starting post-backup thinning
3/27/13 8:11:55.958 PM com.apple.backupd[25861]: Deleted /Volumes/Spruce/Backups.backupdb/Pine/2013-03-26-191143 (17.8 MB)
3/27/13 8:11:55.958 PM com.apple.backupd[25861]: Post-back up thinning complete: 1 expired backups removed
3/27/13 8:11:56.095 PM com.apple.backupd[25861]: Backup completed successfully.
I beleive this has started since the 10.8.1 update. It is happening every hour on the hour so to speak - exactly when time machine is starting. It has become very intrusive - just in the middle of some important coding and then I'm frozen. I'd prefer to set a timer to take a break instead of being forced to do so!

The log shows nothing unusual.
Some "eco" or "green" drives may spin down when idle regardless of the Energy Saver setting. The application "KeepDriveSpinning" from developer Jon Stovell may help in that case, or there may be a way to change the behavior in the drive's firmware settings.

What is autocorrelation time with respect to Data Acquisation System

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