Passing filter to LUMIRA

Hi guys,
after building an own xs app, where I´m analyzing SAP HANA Calculation Views, I want to consume those views with LUMIRA 1.19. I´m pre-filtering the View within my app before I open the view within Lumira. So the problem is to pass these filters to Lumira. Otherwise I need to filter it again. Any thoughts?
Regards, Christoph.

Hi Christoph,
This is currently not supported. Please propose it via SAP Idea place (SAP Lumira: Home), which will help us solicit feedback from other users, and prioritize it accordingly.
Regards,
Boris

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How can I stop my lock-in results from oscillating. The low pass filter is creating artificial noise

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The lock in results oscillates in time, the higher the dB roll off the longer it seems to take to stabilize. Also the frequency of the oscillations becomes lower. This I don't find too weird, the problem is that it just won't stop.
If I use a small time constant and there is no real change in my signal I can easily follow the shape of the the oscillations.
If I use a larte time constant it seems there is an average over the oscillation and then it looks as if it was noise.
All the time my signal has not changed one bit.
This is very anoying since it produces about 20-300microV of noise. (peak to peak amplitude of the oscillations)
So far I've gotten the best results with the IIR (5dig) with 40dB roll off and order 1
Does anyone have an idea of what to do?

Hi BlankaFlux,
could you maybe provide us with a more specific example? What kinds of filters have you tried?
For information on advanced digital filter use, please see the following pages:
- Working with LabVIEW Filtering VIs and the LabVIEW Digital Filter Design Toolkit VIs
- Digital Filter
Maybe you could look into trying the NI LabVIEW Digital Filter Design Toolkit
Happy holidays!
Peter
Peter A.
Field Sales Engineer, NI Germany

Looking for a "color pass filter"..Remove all colors but 1

Looking for a "color pass filter"..Remove all colors but 1 or 2.
FCP6 doesn't seem to have one.
Anyone heard of one that works really well & that is fast to use?
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Jim,
You are totally missing the point. I am an Adobe Premiere Pro instructor. I have been for 5 years. I added my 1st FCP system 2 weeks ago & am experiencing typical transitional curiosities as all who switch to other platforms & editing apps do.
PP has a color pass filter. I was curious to see if FCP did. That sounds logical to me:) If posting the question about the possibility of there being a color pass plugin bothers you, well , that has to do with you.
If you take a moment to read the prior correspondence, you might see my point.
I think we can bury the hatchet now:)

Passing filter values from column formula in OBIEE 10g

Hi,
I am trying to pass filter value from the column LY Spend YTD columns where we have a filter option and passing the year filter 2013 as below.
FILTER("Fact - Purchasing - Invoice"."LY Spend YTD" USING (Time."Year" = '2013'))
My goal behind doing this is, we have a filter already present for the whole criteria on the year which is 2012.
But specifically for this column i dont want to pass the year 2012 to it, Instead I want to pass 2013 to it. But I am not succeding the result is blank.
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Hi Srini
Thanks for you reply.
I cannot do that way because some measures are satisfying with year 2012 and displaying the data and other measure are satisfying with 2013.
I am working on LY Spend YTD, LY spend YTD - 1, Spend YTD and Year ago spend.
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How to activate low pass filter of 6115 with daqmx?

Hello,
I am not able to find the property node to activate the low pass filter of the 6115. Could anyone give me a hint?
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Solved!
Go to Solution.

Hello MichaGue_01 and welcome to NI Forum,
This might help:
Which SMIO (S Series) Devices have Antialias Filters?
http://digital.ni.com/public.nsf/allkb/2326CE69C921A90286256F0800638E10?OpenDocument

High pass filter don't work

i used the following setting for the testing;
input signal 1: 2khz sinewave, amplitude 1V
input signal 2: 50Hz sinewave, amplitude 10V
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i tried to view the frequency component of the signal before and after the filter and found out that both signals pass through the filter.
1. why isn't the 50Hz signal being filtered off?
i had the following values:
before filter after filter
50Hz ==> 3Hz
2kHz ==> 120Hz
the filter seem to scaled down the frequency compon
ent instead of filtering off the 50Hz.
2. why is this so, how can i solve this problem?
3. what should i take note when setting the parameters of the filter?
Attachments:
time2freq_domain.vi ‏573 KB

You might try increasing the number of FIR filter taps. Also, would an IIR filter work for you? I recoded your example using the waveform filtering VIs that were developed for LabVIEW 6i. Please look at the number of taps for the FIR filter, and the PassBand and StopBand frequencies. Also, notice the IIR filter's superior suppression of the low frequency sinusoid.
Attachments:
time2freq_domain2.vi ‏107 KB

Decimation( Does decimation.vi have a low pass filter?)

Hello,
I have a question regarding decimation function (decimation(continuous).vi) in labview. Does it have a low pass filter to take care of aliasing, if yes is it a zero phase filter. Basically I am looking for some thing which can decimate 20KHz sampled signals to 5KHz.
Thanks,
kartik
Solved!
Go to Solution.

Depends on your LabVIEW version and installed toolkits.
The Digital Filter Design Toolkit has a decimation VI that includes a LP AA filter. Open the LabVIEW Help and search for 'decimation' and 'filter' to see what tools are available.
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Design a 1st order Butterworth low pass filter

Hey there... Really hope that u guys can guide me to solve these questions.. =)
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specification.
i)Show all calculations steps and assumption made in your circuit design.
(DONE!)
ii)Show the circuit schematic with all the resistor and capacitor values labelled.(attachment)
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Attachments:
Question 2a.zip ‏146 KB

Just an update for the community, in version 11 and 12 of Multisim, there are some circuit wizards available which can make designing some basic circuits easier. To access the filter wizard, go to Tools -> Circuit Wizard -> Filter Wizard. You can put in the parameters and Multisim will automatically generate the filter for you.
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National Instruments.

Use a High Pass Filter for multiple connections

Hello, you can check this site: http://www.cableboxfilters.com
You can find the best filter and these are newly designed and is a super mini size high pass filters. They have excellent specifications, dimensions of only 13mm x 40.5mm and a weight of only 18g. These filters are best suitable for use in many communications applications, such as CATV, Cable Internet and other RF systems. Hope that this info can help your problem.
With too many connections as you mentioned, you must install a High Pass Filter. These are newly designed and is a super mini size high pass filters. They have excellent specifications, dimensions of only 13mm x 40.5mm and a weight of only 18g. These filters are best suitable for use in many communications applications, such as CATV, Cable Internet and other RF systems.

Hi, Graham,
You wrote: "...There is a Lowpass filter writen within LabVIEW (IMAQ LowPass) this has been optimized for multicore prosessing and runs pretty efficiently..."
Sorry, but I can't recognize any advantages of IMAQ LowPass on the DualCore system. See attachment. When this VI running, then I have approx. 50% CPU load, and no any effect when I set 2 cores with IMAQ Multi-Core Options. This take always approx. 60 - 70 ms for 5x5 low pass on 1024x1024 8 bit image.
I'm missing something?
Upd:
Sorry, forgot technical data:
LabVIEW 8.6f1; Vision 8.6.1; WinXP Prof SP3; Intel Core2 6700 CPU
Andrey.
Message Edited by Andrey Dmitriev on 11-19-2008 02:21 PM
Attachments:
Benchmark.vi ‏16 KB

Bessel low pass filter and sampling frequency

I have a 20 kHz sine wave signal, use the Bessel LowPass filter.
The input parameters for the filter are as followings: sampling freq: 204800, Order: 8, low cutoff freq: 30000.
The filtered X has a much lower amplitudue compared to to the input signal.
If I change the sampling frequency to 80000, it seems the filtered X is better.
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Thank you for the reply!
I attached a test vi, which generates a sine wave and calculate its RMS (basic DC/RMS). The sine wave is then passed to a low pass filter, a new RMS is calculated from the filtered signal.
Test case 1:
Frequency = 10 kHz, Amplitude = 4, Sampling Info: Fs = 80 k, #s = 1000; Low pass cutoff frequency = 30 k; Filter sampling frequency = 80k.
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Test case 2:
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Test case 3:
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Thanks.
Attachments:
LowPass Test-1.vi ‏34 KB

What does the Low-Pass filter do (for dummies)

Dear colleagues,
I'm about to encode a lot of content for DVD using Apple Compressor Vers 3.5.2. This project calls for 2.0 Stereo as well as 5.1 surround. I am wondering if I should check or un-check the Low-Pass Filter for the Full Bandwidth Channels for the 2.0 stereo track.
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In case it's important to note, the LFE track of the 5.1 mix has low frequency effects only and nothing else.
The explanation in the manual seems confusing to me. Would someone be kind enough to help me determine the correct setting?
Thanks in advance!
Xavier

Hi David,
Thanks for your reply. I think I'll just turn OFF this filter for both my 2.0 Stereo and 5.1 Surround tracks.
In the name of proper communication however something still doesn't make sense. The compressor manual states the following:
Full Bandwidth Channels
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Question 2: Why would anyone want to apply a Low-Pass filter to a FULL bandwidth channel? I would think that since these are FULL bandwidth channels you would want to maintain the full range of frequencies. No?

Sample Frequency of Low Pass filter VI is ambiguous

I am having trouble understanding how the Sampling Frequency of the Low Pass Filter actually impacts the function buried within. The information passed in is an array with no relavance to time. How does the function actually sample this array of data at a frequency?

I doubt that they actually build a waveform. Here is my guess: By defining a sample frequency they can get the sampling interval dt as you indicated. By defining a sampling frequency the cutoff frequencies can be scaled to frequency units (Hz), making the VI easier to use.
Lynn

Low pass filter of DAQ USB 6255

Hi there
I am using USB 6255 data acquisition board. The cutoff frequency of the internal low pass filter is 1.7 MHz, therefore, the background noise with frequencies below 1.7 MHz cannot be eliminated. The multiple channel signals I am measuring have 10 KHz frequency and the amplitude from 2 mV to 20 mV, but the accurate measurement cannot be achieved even I set the AI measurement range is 100 mV. Could you please guide me to add a extra analogue or digital low pass filter and keep the fast response time if possible? Thank you.
Regards
Jiabin

Hi Jiabin,
Are you using LabVIEW to record your acquisition? If so you can use our 'Filter express vi' to achieve this. The configuration window is shown below:
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John McLaughlin
Insides Sales Engineer Team Leader
National Instruments UK & Ireland

Low pass filter (PXI 4472)

Hi,
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Hello,
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Low Pass Filter Counter Input Compact DAQ

Hello,
I need to put a 10kHz Low pass filter on a counter input.
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Your filter might work, however it is build to filter power lines, with current rating 6A and powerline voltage. You pay a lot for a box with screw terminals and a lot of copper and high rated capacitors.
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Output impedance of your source?
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Greetings from Germany
Henrik
LV since v3.1
“ground” is a convenient fantasy
'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'

Passing filter to LUMIRA

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