How to change replication frequency

Server2012R2, how can I change the hyper-v replication frequency after replication has already been enabled? When I set it up I set it to 30secs but I am finding that is too frequent and would like to increase that to 5mins or 15mins.
davidh

Hi its easy, open the settings of the Virtual Server which is being replicated.
Go to the Management Section > Replication
on this page there is a tab to select the replication time,
click apply
regards
Mark

Similar Messages

How to change the frequency of pulse train on the fly using an array of values?

Hi all!
First I want to thank U for the great job you are doing for this forum.
Iam still busy trying to control a stepper motor, by sending pulses from my E-series 6024 to a compumotor s6- stepper Driver. I've managed to get it working. I desperately need to control the motor using the values from an array. I believe we can use two approaches for that:
1st - I can get an array of the "numbers of pulses". Each element must run for 10 milliseconds. Using that we can calculate the array of frequencies to send the number of pulses within 10 milliseconds for each specific element. Could we use the arrays of "number of pulses" and frequencies in a "finite pulse train " and up
date with each element every 10 millisecond?
2nd - Or Could we use of the frequency array in a "continuous pulse train vi" and update it every 10 milliseconds?
Please note that I must use the values as they are.
Can someone please built a good example for me? Your help will be appreciated.
Regards
Chris
Attachments:
number_of_steps.txt ‏17 KB
frequency.txt ‏15 KB

Tiano,
I will try to better explain the paragraph on LabVIEW. The original paragraph reads ...
"While in a loop for continuous pulse train generation, make two calls to Counter Set Attribute.vi to set the values for "pulse spec 1" (constant 14) and "pulse spec 2" (constant 15). Following these calls you would make a call to Counter Control.vi with the control code set to "switch cycle" (constant 7). The attached LabVIEW programs demonstrate this flow."
You can make two calls to Counter Set Attribute or you can make a call to Set Pulse Specs which, if you open this VI, you will see that it is just making two calls to Counter Set Attribute. What you are doing with the Counter Set Attribute VIs is setting two registers called "pulse s
pec 1" and "pulse spec 2". These two registers are used to configure the frequency and duty cycle of your output frequency.
The example program which is attached to this Knowledge Base demonstrates how to change the frequency of a continuous generation on the fly. Why continuous? Because changing the frequency of a finite train would be easy. When the train completes it's finite generation you would just change the frequency and run a finite train again. You would not care about the time delay due to reconfiguration of the counter.
If you would like to change the frequency of the pulse train using a knob, this functionality will have to be added in the while loop. The while loop will be continuously checking for the new value of the knob and using the knob value to set the pulse specs.
LabVIEW is a language, and as with learning all new languages (spoken or programatic) there is a lot of learning to be accomplished. The great thing is that LabVIEW is much easier than mo
st languages and the learning curve should be much smaller. Don't fret, you'll be an expert before you know it. Especially since you're tackling a challenging first project.
Regards,
Justin Britten

How to change the frequency of a finite pulse train?

Hi all? I Know I’ve asked once a similar question, but I need a better answer. I would like some ideas or examples on how to modify the example in LV; "Finite Pulse Train Generation - Intermediate for AM9513-Based Devices",so that the frequency can be changed while the VI is executing.
Will i have any problem with I use this VI in a DAQ-STC-Based Devices(E-series)?

Tiano,
I will try to better explain the paragraph on LabVIEW. The original paragraph reads ...
"While in a loop for continuous pulse train generation, make two calls to Counter Set Attribute.vi to set the values for "pulse spec 1" (constant 14) and "pulse spec 2" (constant 15). Following these calls you would make a call to Counter Control.vi with the control code set to "switch cycle" (constant 7). The attached LabVIEW programs demonstrate this flow."
You can make two calls to Counter Set Attribute or you can make a call to Set Pulse Specs which, if you open this VI, you will see that it is just making two calls to Counter Set Attribute. What you are doing with the Counter Set Attribute VIs is setting two registers called "pulse s
pec 1" and "pulse spec 2". These two registers are used to configure the frequency and duty cycle of your output frequency.
The example program which is attached to this Knowledge Base demonstrates how to change the frequency of a continuous generation on the fly. Why continuous? Because changing the frequency of a finite train would be easy. When the train completes it's finite generation you would just change the frequency and run a finite train again. You would not care about the time delay due to reconfiguration of the counter.
If you would like to change the frequency of the pulse train using a knob, this functionality will have to be added in the while loop. The while loop will be continuously checking for the new value of the knob and using the knob value to set the pulse specs.
LabVIEW is a language, and as with learning all new languages (spoken or programatic) there is a lot of learning to be accomplished. The great thing is that LabVIEW is much easier than mo
st languages and the learning curve should be much smaller. Don't fret, you'll be an expert before you know it. Especially since you're tackling a challenging first project.
Regards,
Justin Britten

How to change the frequency of a finite/continuous pulse train in the program?

Hello!...
I am trying to modify the Finite pulse train vi example to change the frequency with respect of a ratio (1:2) of the data of a spreadsheet file as they are read one by one.
My aim is to get the pulse train to clock a stepper motor controller, in such way that the speed of the motor increases when the data of the spreadsheet increases and vice-versa.
I think that if I want to get the clock to change its speed, I must change the frequency and if I want it to increase/decrease like the data in the spreadsheet, I must tell the frequency that the data is increasing or decreasing in value.
Obviously the program must do it while it is running
Can anyone see wh
ere I have gone wrong and/or give any suggestions?
I have attached my vi and the spreadsheet file.
Thanks
Tiano
Attachments:
My_VI.vi ‏99 KB
wave.txt ‏18 KB

Tiano,
Try to build the pieces of the program separately. Get a VI running that reads the spreadsheet and reports the data in it sequentially in an indicator (forget about the pulse generation at this time). This indicator will be wired to the frequency input of the pulse generator VI.
You have read the data and have a transposed array. Now you must learn to use the Index Array function in a For Loop to extract the data sequentially. You will wire the increment output [i] of the For Loop into Index Array to shift from one data point to the next.
You have a For Loop with no constant wired to [N] to tell it how many times to run. If you use Array Size to extract the number of entries in the spreadsheet data, this can be the constan
t that tells the For Loop how many times to run.
You are using the Tab Control in a way I have never seen before (I don't think it will work this way either. Tab Control is for presenting and hiding controls, indicators, labels, etc. on the front panel, before running the VI. They are not used to control the program functionality itself. Typically you would use a Boolean to choose between 2 options for a Case Structure.
You can also change the path constant which selects the spreadsheet file into a control. This would allow you to browse for any file you want and eleiminate the need for the Case Structure altogether.
Mike

In NI-DAQmx, how to change the frequency of a pulse train?

I was using "GPCTR_Change_Parameter()" to change the frequency of my pulse train in Traditional NI-DAQ and Labwindows/CVI; is there any function can do the same thing in NI-DAQmx without restarting the task?

You can do this in one of two ways, depending on the version of NI-DAQ you are using. If you are using 7.2 or later, you can use the counter write functions (ex: DAQmxWriteCtrFreq()), which are available for each flavor of pulse generation tasks (Freq, Time, Ticks). If you are using NI-DAQ 7.0 or 7.1, you can modify the attributes directly (DAQmx_CO_Pulse_HighTime, DAQmx_CO_Pulse_LowTime, etc). Keep in mind that for each attribute pair, one of the attributes will cause the counter to load the new pair. The attribute that causes the load is LowTime, LowTicks, and Frequency.
I hope this helps!
gus....

How to change replication manager ack policy?

Hello all
I have installed my Berkley_db and I enabled replication using the following command:
-enable-pthread-api
Now, I would like to change my replication manager ack policy and perform some tests.
I know that I have to use this method:
repmngr_set_ack_policy
However, I don't know how to call the above method...
Shall I insert an entry in a specific file?
Shall I give it as a command line?
I must note that I replicate some data in other three servers. The change of the ack policy will automatically work and affect all three servers or will I have to perform the changes manually on every one of them?
Thank you in advance!
Edited by: user546168 on 10 Δεκ 2011 1:13 πμ

Hello,
You can read about:
DB_ENV->repmgr_set_ack_policy() at:
http://docs.oracle.com/cd/E17076_02/html/api_reference/C/repmgrset_ack_policy.html
A few points to note are:
0. You can set the ack policy programmatcially or via an environment
DB_CONFIG file. If using a DB_CONFIG enter "repmgr_set_ack_policy"
a blank space and the ack_policy parameter required. For example:
repmgr_set_ack_policy DB_REPMGR_ACKS_ALL
A DB_CONFIG file is read when the database environment is opened,
so it will overrule any configuration done before that time.
1. All sites in a replication group need to be configured with the
same acknowledgement policy.
2. The DB_ENV->repmgr_set_ack_policy() method configures the database
environment, not only the operations performed using the specified
DB_ENV handle.
3. You can invoke DB_ENV->repmgr_set_ack_policy() method at any time
during the life of the application.
Thank you,
Sandra

For PCI-4451,How to change the frequency of an output signal without any undefined state

I would like to generate a signal using output channels of PCI-4451 and at the same time capture data using the input channels. Is there any method that I can generate a continuous signal without any undefined state when the signal frequency is being changed?
Attachments:
Input_Signal.bmp ‏729 KB

Wee,
DSA boards such as the PCI-4451 have a number of very desirable properties including high precision and a high sampling rate. The trade-off for the combination of these two properties is that the DSA boards cannot adjust their sampling rate on-the-fly. Instead they have to be stopped and reconfigured. During this reconfiguration time, the value of the board's output becomes flat and level.
If you are looking to adjust the board's output without seeing these flat spots, you have to take a different approach to programming a DSA board. Instead of reconfiguring the board, what you need to do is allow the board to continue to run (at the same output frequency), and then overwrite the output buffer that the board reads to output values. This will
allow you to output new data without the flat spots. Below you will find an example that displays this behavior.
If you determine that this is not an acceptable workaround due to the limitations on output rates, you may want to look at using a Multifunction DAQ board (60xx or 62xx) or an arbitrary waveform generator (54xx) device instead.
Best of luck with your application.
Regards,
Jed R.
Applications Engineer
National Instruments
Attachments:
Cont_Gen_Voltage_Wfm-Int_Clk-With_Updates_for_DSA.llb ‏161 KB

How to change sampling frequency

Hi,
what is the simple way to change sampling freqiency for more AIChannels (some differential and some RSE and diff. min/max values) trough cont. data acquisition?
Thanx
Vedran

The only way I have found to do this is to use a counter as your clock source for you analog input lines. You can vary the frequency of this while the program is running. Take a look at the attached program. I have an E-series card, so that is what this is based on.
Hopefully it will be useful.
Randall Pursley
Attachments:
Counter Clock Acq.vi ‏180 KB

How to change Bandmode / Frequency

If I go into the "Mobile Network Engineering Screens" menu and then into "Cell Information..." the bandmode is set to "GSM850" which is causing me to get SOS. How do I change the bandmode to GSM900? I've tried clicking on GSM800 and selecting "All" but when I back to the menu and then back into Cell Information it changes back to GSM850.

I do believe that my phone support this because I've checked the specifications on the Blackberry website and It says It does support GSM900 so I think it's just a case of changing the settings. I dont see why a shop would sell a phone that cant support the UK Band Freqeuncy?

How to change the frequency of time machine back ups

Time machine backs up every hour. And it takes several minutes. I don't need to back up that often. Once a day is fine. But I don't see any way to set the frequency of back ups.

There are a number of applications that can be installed to set different time schedules for TM. I have not provided links as I know nothing about them.
If you do a web search on the title of your post you should find them.

How to avoid delay during analog output generation by changing its frequency?

Windows XP
LabVIEW 7.1
PCI-6036E + BNC-2120
Hi,
I am going to create a vi to generate an engine speed sensor signal (a simple square wave with specific missed pulses, in my case 58 pulses “teeth” and 2 missed pulses “missed teeth”) as an analog output but in addition give me the opportunity to control parameters for example frequency online to simulate the engine speed changes during running that vi. For this purpose I have started with “Continuous Generation.vi” which is available in NI Example Finder under the following path:
Hardware Input and Output > Traditional DAQ > Analog Output > Continuous Generation.vi
Then I modified it towards above mentioned goal, all related vi s are attached. The main vi is: "Motor Signal Generator_1.12.vi"
At the first try it looks that it works properly but when have a look on that more accurately with Oscilloscope (fortunately I have a good one: Agilent 54621A – 60 MHz, 200 Ms/s) obviously there is a gap (delay or Jitter) whenever I change the engine speed. It is also attached in Signal generation_problem report.doc file.
Note: Small gaps are OK and related to predefined missed teeth but the big one is happened during changing engine speed.
As far as I understand it is related to the time which case structure in AO C-GEN sub-vi needs for AO reconfiguration each time after changing the engine speed (update rate). How can I get rid of this delay or gap during signal generation and generating completely continuous signal?
I have to mention that obviously I changed the frequency by changing the update rate. The other possibility is to change the number of updates in one period (refer to "generate arb frequency.vi" in NI site: http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3E48F56A4E034080020E74861) which resulted in no delay however then I can not change the frequency continuously but step by step (for example jump from 5Khz to 2.5KHz immediately) and this can not pass to my application.
Any hint is appreciated.
regards
Attachments:
Signal_generation_NIsupport.zip ‏81 KB

Hi Roozbeh,
The following example will allow you to vary the pulse train frequency during run time.
Thanks,
Lesley Y.
Attachments:
GenDigPulseTrain-ChangingSpecs.vi ‏75 KB

How you change the download frequency for a single Podcast?

I have iTunes 11.1.5 for Mac, and I can't find how to change the down load frequence , aka "check for new episodes" setting for individual podcasts. I've tried using the settings menu in the "My Podcasts" and the "List" podcast view. When I do this, I see these setting:
Keep
Download
Sort Order
Play Order
If I click on the "Defaults..." button, the top setting is "check for new episodes"
I have no problem with being able to change the default download frequency setting, but I am at wit's end with locating where I can change that setting for individual podcasts.

Bump.

How to change DT-LTE, SCDMA to UNICOM,WCDMA ? I bought this from China but 3g and 4G frequency....

How to change DT-LTE, SCDMA to UNICOM,WCDMA ? I bought k30-t from China but there are 1800/2100 MHZ frequency bands in my country. This phone doesnt support 3G,4G in my country. How I can change frequency bands to 1800,2100 MHz l?

I learned from Apple store staff here in Amsterdam and a little internet search it is a 'hard coded' feature in iPhones and iPads sold in China. Can only be rectified by jailbreaking your iPhone. This problem ONLY exists when buying a i-product in China.
What my problem is, is that I fail to see why Apple should settle with the Chinese government about that government's wishes to control their citizens, and extend those same restrictions to faithful buyers from other nations. Apple should be able to provide me (and all the others that bought their stuff in China) a solution to this problem. If my iPhone had not been stolen in China, I would not have had the need to buy a new one there, it didn't make any difference financially and it was not made clear to me by Apple in China at the time of purchase that I was buying a less versatile product then that advertised superduper new iPhone 5 64Gb. I feel I have been cheated by Apple. Given my dedication to their products that doesn't feel right.
A civilized solution from Apple will be greatly appreciated.

HT1689 How do I change the frequency in which I enter my password when purchasing/downloading from iTunes?

I changed the settings and now I cannot figure out how to change them to the default setting. How do you change the frequency in which you enter your password in iTunes?

I don't use restrictions but check ..... Settings>General>Restrictions>Allowed Content>Require Password.

How to control keithley 6221 just to change the frequency of a wave at intervals .

Hello,
I'm very new to LabVIEW. I'm trying to control keithley 6221 using RS-232.
What I want to do is just to change the frequency of a sine wave at every 30 seconds, and the series of the required frequencies could be input at the beginning.
Does anybody know how can I do it?
I'll be glad to get any help.
Thanks!

NI does not have a LabVIEW driver for that instrument but you might want to check with Keithley.
On the main Instrument Driver Network page are links on developing an instrument driver. There is a wizard (Tools>Instrumentation>Create Instrument Driver Project) as well as the Instrument I/O Assistant. You will need the instrument manual to look up the programming commands. There are example VIs for serial communication.

How to change replication frequency

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