Varying phase singal for time comparison

Hello,
I have a pulsing square wave signal with varying phase and i want to measure the phase difference over time.
The signal needs to be sampled with a specified period and the sampled signal will be used as a reference for varying phase measurement during that period.
can anyone shed some light on this matter?
thanks
Message Edited by limit on 01-06-2007 10:13 PM

Sounds like you want a PLL. See here.
http://zone.ni.com/devzone/cda/epd/p/id/5153
The meter shows you the difference in phase.
Ben
Message Edited by Ben on 01-07-2007 12:41 PM
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction
Attachments:
PLL.PNG ‏45 KB

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-Jason
Sorry the code didn't line up. I used the wrong code insert options.
Message was edited by: UteFanJason

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Seenu

why do u want screen shots
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I think its helpful to u.
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Work Personnel Subarea Groupings Schedules Schedule
Personnel Work Schedules  Personnel Time Management IMG Group
Personnel Subareas for theDaily Work ScheduleSubarea Groupings
 Daily Work Schedules  Work Schedules  Personnel Time Management
IMG Define Daily Work Schedules
Work Personnel Time Management IMG Define Period Work Schedules.
Period Work Schedules Schedules
IMG Define Day Day Types  Work Schedules Personnel Time Management Types.
 Day Types  Work Schedules  Personnel Time Management IMG Define Day Types.
Day Work Schedules  Personnel Time Management IMG Define Special Days.Types
Work Personnel Time Management IMG Define Employee Subgroup Work
Schedule Rules and Work Schedules Schedules Groupings
Work Work Schedules  Personnel Time Management IMG Define Groupings
for the Public HolidaySchedule Rules and Work Schedules Calendar.
Work Work Schedules  Personnel Time Management IMG Set Work
Schedule Rules and WorkSchedule Rules and Work Schedules Schedules.
Work Work Schedules  Personnel Time Management IMG Generate Work
Schedules ManuallySchedule Rules and Work Schedules
IMG Set Planned Working Time  Work Schedules  Personnel Time
Management  Default Value for the Work Schedule.
 Personnel Time Management IMG Set Default Value for Time
Management Planned Working Time Work Schedules Status.
Time Data Recording and Personnel Time Management IMG Define
Personnel Subareas for Substitution Substitutions Administration
Types.
Time Data Recording and Personnel Time Management IMG Set Defaults
for Substitution Types. Substitutions Administration
IMG Absences Time Data Recording and Administration  Personnel Time
Management  Group Personnel Subareas for Attendances and Absence
Catalog  Absences.
Time Data Recording and Personnel Time Management IMG Define Absence
Types. Absence Catalog  Absences Administration
IMG  Absences  Time Data Recording and Administration Personnel
Time Management Define Counting Classes for the Period Work Absence
Counting Absence Catalog Schedule.
Time Data Recording and Personnel Time Management IMG Rules for
Absence Counting  Absence Catalog  Absences Administration Group
Employee Subgroups for Time Quotas.Absence Counting (New)
IMG  Absences  Time Data Recording and Administration Personnel
Time Management Group Rules for Absence Counting (New)  Absence
Counting Absence Catalog Personnel Subareas for Time Quotas
Time Personnel Time Management IMG Absence Absence Catalog 
Absences Data Recording and Administration Define Rules for Rounding
Counted Rules for Absence Counting (New) Counting Absences
Time Data Recording and Personnel Time Management IMG Rules for
Absence Counting  Absence Catalog  Absences Administration Define
Counting RulesAbsence Counting (New)
Personnel TimeIMG Absence Catalog Absences  Time Data Recording and
Administration Management  Define Counting Rules  Rules for Absence
Counting (New)  Absence Counting  Deduction rules for Absence quotas
Time Personnel Time Management IMG Absence Absence Catalog 
Absences Data Recording and Administration Assign Counting Rules to
Absence Types.Counting
Personnel TimeIMG Attendances/Actual Working Time Data Recording and
Administration Management Define Attendance Types.Times
Time Personnel Time Management IMG  Attendances/Actual Working
Times Data Recording and Administration Assign Counting Rules for
Attendance counting (New) Attendance counting Rules to Attendance
Types.
Time Data Personnel Time Management IMG Managing Time Accounts Using
Attendance/AbsenceRecording and Administration Define Absence Quota
Types. Time Quota Types Quotas
PersonnelIMG Managing Time Time Data Recording and Administration
Time Management  Calculating Absence Entitlements Accounts Using
Attendance/Absence Quotas Permit Quota Generation Without
TimeAutomatic Accrual of Absence Quotas Evaluation.
Time Time Evaluation  Personnel Time Management IMG Set Personnel
Subarea Groupings for Time Recording.Evaluation Settings
PersIMG  Time Data Recording and Administration onnel Time
Management Calculating AbsenceManaging Time Accounts Using
Attendance/Absence Quotas  Set Base Entitlements  Rules for
Generating Absence Quotas Entitlements Base Entitlement for Absence
Quota Generation.
Personnel TimeIMG Managing Time Accounts Time Data Recording and
Administration Management Rules for Calculating Absence Entitlements
Using Attendance/Absence Quotas Determine Validity and Deduction
Periods.Generating Absence Quotas
IMG Managing Time Data Recording and Administration  Personnel Time
Management  Calculating Absence EntitlementsTime Accounts Using
Attendance/Absence Quotas Define Set Base Entitlements  Rules for
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Define Public Holiday Work Schedules  Personnel Time Management IMG Classes
Personnel Work Schedules  Personnel Time Management IMG Group
Personnel Subareas for the Work ScheduleSubarea Groupings
IMG Group Personnel Subarea Groupings  Work Schedules Personnel
Time Management Personnel Subareas for theDaily Work Schedule
 Daily Work Schedules  Work Schedules  Personnel Time Management
IMG Define Daily Work Schedules
Work Personnel Time Management IMG Define Period Work Schedules.
Period Work Schedules Schedules
IMG Define Day Day Types  Work Schedules Personnel Time Management Types.
 Day Types  Work Schedules  Personnel Time Management IMG Define Day Types.
Day Work Schedules  Personnel Time Management IMG Define Special Days.Types
Work Personnel Time Management IMG Define Employee Subgroup Work
Schedule Rules and Work Schedules Schedules Groupings
Work Work Schedules  Personnel Time Management IMG Define Groupings
for the Public HolidaySchedule Rules and Work Schedules Calendar.
Work Work Schedules  Personnel Time Management IMG Set Work
Schedule Rules and WorkSchedule Rules and Work Schedules Schedules.
Work Work Schedules  Personnel Time Management IMG Generate Work
Schedules ManuallySchedule Rules and Work Schedules
IMG Set Planned Working Time  Work Schedules  Personnel Time
Management  Default Value for the Work Schedule.
 Personnel Time Management IMG Set Default Value for Time
Management Planned Working Time Work Schedules Status.
Time Data Recording and Personnel Time Management IMG Define
Personnel Subareas for Substitution Substitutions Administration
Types.
Time Data Recording and Personnel Time Management IMG Set Defaults
for Substitution Types. Substitutions Administration
IMG Absences Time Data Recording and Administration  Personnel Time
Management  Group Personnel Subareas for Attendances and Absence
Catalog  Absences.
Time Data Recording and Personnel Time Management IMG Define Absence
Types. Absence Catalog  Absences Administration
IMG  Absences  Time Data Recording and Administration Personnel
Time Management Define Counting Classes for the Period Work Absence
Counting Absence Catalog Schedule.
Time Data Recording and Personnel Time Management IMG Rules for
Absence Counting  Absence Catalog  Absences Administration Group
Employee Subgroups for Time Quotas.Absence Counting (New)
IMG  Absences  Time Data Recording and Administration Personnel
Time Management Group Rules for Absence Counting (New)  Absence
Counting Absence Catalog Personnel Subareas for Time Quotas
Time Personnel Time Management IMG Absence Absence Catalog 
Absences Data Recording and Administration Define Rules for Rounding
Counted Rules for Absence Counting (New) Counting Absences
Time Data Recording and Personnel Time Management IMG Rules for
Absence Counting  Absence Catalog  Absences Administration Define
Counting RulesAbsence Counting (New)
Personnel TimeIMG Absence Catalog Absences  Time Data Recording and
Administration Management  Define Counting Rules  Rules for Absence
Counting (New)  Absence Counting  Deduction rules for Absence quotas
Time Personnel Time Management IMG Absence Absence Catalog 
Absences Data Recording and Administration Assign Counting Rules to
Absence Types.Counting
Personnel TimeIMG Attendances/Actual Working Time Data Recording and
Administration Management Define Attendance Types.Times
Time Personnel Time Management IMG  Attendances/Actual Working
Times Data Recording and Administration Assign Counting Rules for
Attendance counting (New) Attendance counting Rules to Attendance
Types.
Time Data Personnel Time Management IMG Managing Time Accounts Using
Attendance/AbsenceRecording and Administration Define Absence Quota
Types. Time Quota Types Quotas
PersonnelIMG Managing Time Time Data Recording and Administration
Time Management  Calculating Absence Entitlements Accounts Using
Attendance/Absence Quotas Permit Quota Generation Without
TimeAutomatic Accrual of Absence Quotas Evaluation.
Time Time Evaluation  Personnel Time Management IMG Set Personnel
Subarea Groupings for Time Recording.Evaluation Settings
 Time Data Recording and Administration  Personnel Time Management
IMG Managing Calculating AbsenceTime Accounts Using
Attendance/Absence Quotas  Set Base Entitlements  Rules for
Generating Absence Quotas Entitlements Base Entitlement for Absence
Quota Generation.
Personnel TimeIMG Managing Time Accounts Time Data Recording and
Administration Management Rules for Calculating Absence Entitlements
Using Attendance/Absence Quotas Determine Validity and Deduction
Periods.Generating Absence Quotas
IMG Managing Time Data Recording and Administration  Personnel Time
Management  Calculating Absence EntitlementsTime Accounts Using
Attendance/Absence Quotas Define Set Base Entitlements  Rules for
Generating Absence Quotas  Generation Rules for Quota Selection.
Still have doubts defnately i willl do the need ful

How large should a disk for time machine be vs the hard disk

Can anyone tell me how large a disk for time machine be vs the size of the hard disk?

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Mixed Costing on two different Costing Variants at the same time.

Dear All,
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Regards
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I have done it ...hehehhehehe.

Is it possible to use Zero phase filter for continuous filtering?

I have to filter a large amount of data without any phase shift from original signal. The Zero phase filter does it but it has to be used in single shot mode. It doesn't have any "Init/Cont" input terminal which other filters have. Is there any way to implement zero phase filtering to filter data continuously?

AJ_CS wrote:
The zero phase filtering method seen in your thread will work, if the filtering happens as a single shot operation. It will remove the edge effects of zero phase filtering.
But for an application wherein data arrives as small blocks, it has to filter each block of the data and also it has to maintain the continuity of filtering.
For example in every 1 sec, I'm getting 500 samples of data. I have to use this zero phase filtering for each block of 500 samples, in each second. But what seems to happen is, between the end of one data block and beginning of next data block( between 500th sample and 501th sample or between the end of 1st sec data and beginning of 2nd sec data), there is a discontinuity, or distortion.
Normal IIR (butterworth)filter maintains this continuity between data blocks, but with phase shift.
Zero phase filtering doesn't introduce any phase shift but it is unable to maintain the continuity, it seems.
Is it possible to have a filter meeting both these requirements?
In a nut-shell yes.
It will require you apply the technique I illustrated in that thread repeatedly each time you get an update. The "reflection about the end points" cleans up the disconinuities. I suspect there may be some theory that what you end up with can not be proven using any formal math approach, but it closely mimics what the human mind does when we ask ourselves "If it continues like that that, what do I expect?".
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Database time comparisons from RAT

I am using Real Application Testing to test moving to a new server and I am a little confused on the “database time” comparisons. I ran the capture for 5 minutes and 54 seconds, the database time for the CAPTURE shows 33 minutes and 29 seconds, when I replayed it the REPLAY shows database time for 6:09 but the actual duration was only 5:57.
So this tells me that it took about the same amount of time to play back the workload but I don’t understand the database time. Can somebody help me out with this? Thanks.

I have not done RAT but my guess is the CAPTURE time is the cumulative time consumed by sessions on database for the given workload.

Stored Procedure using Date/Time Comparison

I’m running SQL Server 2012. I need to write a procedure that will send out emails based on a date/time comparison.
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Check the below sample and hope this will help you:
DECLARE @Tickets TABLE (TicketID INT, TicketDate SMALLDATETIME, Responded BIT)
INSERT INTO @Tickets
SELECT 1, '01/10/2015 10:00AM', 0 UNION ALL
SELECT 2, '01/13/2015 12:00PM', 1 UNION ALL
SELECT 3, '01/12/2015 05:30PM', 0 UNION ALL
SELECT 4, '01/09/2015 08:00AM', 1
SELECT *, '24 Hour' AS TicketCase
FROM
@Tickets
WHERE
Responded = 0
AND DATEDIFF(HOUR, TicketDate, CURRENT_TIMESTAMP) <= (CASE DATEPART(WEEKDAY, TicketDate) WHEN 7 THEN 48 WHEN 1 THEN 24 ELSE 0 END) + 24
UNION ALL
SELECT *, '48 Hour' AS TicketCase
FROM
@Tickets
WHERE
Responded = 0
AND DATEDIFF(HOUR, TicketDate, CURRENT_TIMESTAMP) >= 24
AND DATEDIFF(HOUR, TicketDate, CURRENT_TIMESTAMP) <= (CASE DATEPART(WEEKDAY, TicketDate) WHEN 7 THEN 48 WHEN 1 THEN 24 ELSE 0 END) + 48
Output
TicketID | TicketDate | Responded | TicketCase
3 | 2015-01-12 17:30:00 | 0 | 24 Hour
1 | 2015-01-10 10:00:00 | 0 | 48 Hour
You can make the separate SQL statements and email to proper people based on 24 hour or 48 hour case.
Best Wishes, Arbi; Please vote if you find this posting was helpful or Mark it as answered.

TS1338 I have 4 Trojan Horse viruses on my external drive I use for Time Machine. My MacBook Pro hard drive is clean. I have eased the external drive 3 times using Disk Utility and it still has the 4 Trojan Horse viruses. How do I get rid of them. Wayne

I have 4 Trojan Horse viruses on my external drive I use for Time Machine. My MacBook Pro hard drive is clean. I have eased the external drive 3 times using Disk Utility and it still has the 4 Trojan Horse viruses. How do I get rid of them. I am using 10.8.3 Wayne

ksu62 wrote:
The infection names are: classload.jar-719ef6a5.zip
                                          classload.jar-5db452le31.zip
                                          ar3.jar-6ce3b2f-45l483f.zip
                                          classload.jar-lef99412-63bsd3fl.zip
Those look alot like file names and not infection names. I don't find any reference to anything like that on Norton or VirusTotal. Since you said these were Trojans, I would expect to see "Trojan" as part of the infection name.
".jar" files are executable Java applets. The random alpha-numerics would seem to indicate a cache file, likely from a browser with Java enabled. And we all know what ".zip" means.
Worst case is that you had Java enabled in a browser and were infected by one of the late variants of the Flashback Trojan over a year ago or one of a couple of other attacks using the same vulnerability but targetted against a small number of political sympathizers. Much more probable is that thes were Windows only Trojans. Hopefully you have a fully up-to-date OS X, including Java, and have disabled Java in all your browsers by now.

Getdate() and time comparison

Hi all, I've SBO and I'm trying to create a query, based on OQUT table, showing DocNum WHEN time of creation of the offer is less then 15 minutes than System time. I'm trying to compare DocTime and the time extracted with getdate() but I'm not able to do it. I think it's a problem of data type.
Is there anybody who can help me?
Thanks in advance

Hi Federico,
You're correct, it's not possible to directly use DocTime for date comparisons because it's held as an integer value and not a DateTime value. You can do a little conversion though. Have a look here:
Re: GetDate() in query generator doesn' return the time!
Kind Regards,
Owen

Varying phase singal for time comparison

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