Optical Encoder with NI 6052E

Looking for Examples of DAQ interface to a ttl optical encoder connected to motor shaft.
I need to have instantaneous display of speed and position once a home reference is established. using NI 6052E
2 counters and 8 Digital I/O available Im using someting similar to a HS25 Incremental Optical Encoder
If there are any good examples that could be modified in LabVIEW ID be interested in seeing them
I've not done this before at this level of detail with a DAQ card. Ususlly I d just buy an encoder and let it handle the details
but this time I will dive in and try to learn something.
I'll be looking at the LabVIEW examples as I wait for any response
Thanks in advance!

Hmm.. This looks interesting
http://zone.ni.com/devzone/cda/tut/p/id/4623

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Tuning an optical encoder with a linear actuator

Hello everyone!
I am trying to get an optical encoder (5 lead single ended, incorperated into an Ultramotion D2 series linear actuator) to read the position of the linear actuator's position to 4 decimal figures precision (0.0001), and the DAQ I am using is NI cDAQ 9121 with 2 channels. I decided to use the 65 mV configuration. The encoder has ground, channels A and B, index and 5V leads, of which I have omitted using the index and channel B. Channel A is connected to the AI+. The linear actuator has a scaling of 20,000 steps per revolution and a movement of 4mm per revolution (point to point configuration of the stepper motor drive ST5-S, by Applied Motion).
I am not sure if the above configuration is suitable, but I am limited to the current equipment. I have coded the program using LabVIEW 2014 and, while it seems to give a good estimation of the displacement to the nearest 1 mm, it is not recording the fractions and counts anything that is 1mm or less as simply 1.
My question is actually threefolds:
1) How can I tune the encoder to read the exact measurement to the nearest 0.0001 accuracy?
2) Am I using an appropriate configuration for the leads?
3) If the problem is not one of the above, could it be something concerning the DAQ software settings and/or the code itself?
Thanks for your advice in advance!

Hey kmhijazi,
Here I share the most general documentation about using encoders with DAQ devices:
Using Quadrature Encoders with E Series DAQ Boards
http://www.ni.com/tutorial/4623/en/
Then, here’s a second resource where you can find more details that you can adjust to improve the measurement (i.e the Decoding type, which will however depend on your encoder specifically):
Encoder Measurements: How-To Guide
http://www.ni.com/tutorial/7109/en/
And, here you will find how to create a test task in NI MAX to try changing these parameters and test if these improve your accuracy.
Connecting Quadrature Encoders to a DAQ Device
http://www.ni.com/getting-started/set-up-hardware/data-acquisition/quadrature-encoders
I hope this can help.
Regards,
>>Daniel C.

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Can I use my old mac mini (G4 Tiger) as an optical drive with new mac mini, late 2014?

I think so
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<?xml version="1.0"?>
<OpenSearchDescription xmlns="http://....">
</OpenSearchDescription>
BUT the document attribut(?) encoding="UTF-8"?> is missing!
How can i add encoding with value UTF-8 to the document object?? it should look like:
<?xml version="1.0" encoding="UTF-8"?>
*here is my coding.
TYPE-POOLS: ixml.
CLASS cl_ixml DEFINITION LOAD.
DATA: lo_ixml           TYPE REF TO if_ixml,
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*rausrendern in file
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Hi I don't know if this is the correct place for this post. So apologies me if this is the wrong place.
Encoding with Adobe Media Encoder CS4 (4.2.0.006 and 4.0 too)
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(extract)
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Thanks for the interest.
I'll try to explain all details:
MacPro 1.1 (mid 2006) under Mac OS X 10.4.11 (Darwin 8.11.1 kernel)
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I am attempting use an encoder with a non-NI board (Measurement Computing) and I am unsure how to interface the encoder output from the board with LabView. I have the VIs for the board which allow the board to interface with LabView,. I essentially need a VI to decode the quadrature, the ones in the tutorials were not very helpful or insightful.

Hello Mystery,
Take a look at the section “Velocity and Acceleration Calculations” in this devzone. While the article itself applies to CompactRIO, the equations used in the above section can help you determine how to convert the counter output into a velocity measurement.
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Hello!
I'm trying to read quadrature encoder (to be more specific this is an output of the pulse train generator that simulates the encoder).
In the attached picture you can see how the signal that i'm trying to read.
I need an advise about the correct filter settings.
Please also see the attached vi.
Usefull data:
Labview 8.2.1
Capturing device PXI-6602.
The Encoder is 16384 pulses. (If the reading is x4, i should get 2^16 - 65536 ticks).
The Encoder has differential outputs, but i've connected only A,B and Z.
The rotating speed is up to 5000 rpm. You can see in on the picture. (16384*(5000/60)=1,365,333MHz).
There is no problem to read the encoder with another devices, i have a motion analyzer from Control&Robotics solution and it works great.
Thank you.
Elman Izia.
001.jpg (78 kb)
Position capture.vi (171 kb)

Hi Elman,
The filter clock is used to make sure that your signal has
integrity and eliminates glitches. In
order for signal to be counted, it must remain high for two consecutive periods
of your filter clock. There are five
time bases (5us, 1us, 500ns, 100ns and programmed) that can be used as your
filter clock. The programmed clock can
be created by another counter and this setting will let a signal be counted if
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introduced by noise, crosstalk or transmission line effects.
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of the filter clock. This property is
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settings. If your signal stays high for
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acceptable for your application. Since
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a signal to be recognized if it remains high for two consecutive pulses.
For further explanation, refer to the PCI/PXI–6602 User
Manual page 3-20.
http://www.ni.com/pdf/manuals/322137a.pdf
Respectfully,
Rob F
Test Engineer
Condition Measurements
National Instruments

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Hello everybody,
I have an application which receives and plays alaw formated wav files using JMF(with the help of some additional libraries) . I want to use lower bandwidth for my application. A quick google search indicated that i can do this by using gsm format.
I have 2 questions:
1-) what are the differences between .gsm files and .wav files which are encoded with gsm codecs? Which one's quality is better? which one's compression ratio is better?
2-) which payload type should i use for wav files which are encoded with gsm codecs?
In [Rtp Payload list|http://www.iana.org/assignments/rtp-parameters] page, there is a gsm entry whose payload is 3. I suppose that is for files with gsm extension. I tried it but it didn't work with my wav sample (as u can guess it was encoded with gsm 6.10 codec)
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Thanks in advance
btw i also tried this [gsm sample|http://www.nch.com.au/acm/sample.gsm] with payload 3.At first it worked but then strangely it played just static. In Sun's page it says gsm format is supported. I played both ulaw and alaw succesfully so i wonder what i am doing wrong. Do we need to tell the player that it is going to receive data in gsm format? I didnt do such a thing for u-law and a-law formats...
Edited by: Bugra.Hasbek on Nov 10, 2008 1:18 AM

Bugra.Hasbek wrote:
Hello everybody,
I have an application which receives and plays alaw formated wav files using JMF(with the help of some additional libraries) . I want to use lower bandwidth for my application. A quick google search indicated that i can do this by using gsm format.
I have 2 questions:
1-) what are the differences between .gsm files and .wav files which are encoded with gsm codecs? Which one's quality is better? which one's compression ratio is better?I would imagine they are the same...
2-) which payload type should i use for wav files which are encoded with gsm codecs?I would imagine 3...
In [Rtp Payload list|http://www.iana.org/assignments/rtp-parameters] page, there is a gsm entry whose payload is 3. I suppose that is for files with gsm extension. I tried it but it didn't work with my wav sample (as u can guess it was encoded with gsm 6.10 codec)
Any suggestion is appreciated. If you have a comment about the main problem (which is using lower bandwidth for sending audio data) i would also like to hear itMy suggestion would be not to worry about so much stuff. JMF does all of this for you automaticlly.
On the sender side, make your processor take in whatever kind of supported file you want. Set the processor to output your GSM mono, and then you can just use a Player to play it on the other side. It's really not very different than the examples...
[http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/AVTransmit.html]
When you're programming the tracks, and you're calling "setFormat" on them, just set their format to be gsm.
[http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/AVReceive.html] should be able to play this out of the box...

Using an optical mouse with my s10e

Hi
I am not able to use any optical mouse with my s10e. Ayn driver available?
Thank you

Hi, but that didnt solve your problem...
I have a little quest for you, to near the fences around the wild mice ...
Did you use the factory installed XP ?
in that case...yes..
in case of no jump to END
Did other usb devices recognized , like flashdrive/external hdd/keyboard ?
have you try it on both ports ?
if not ...
have you activate /installed Quickstart ?,
if yes .
. then plug in the usb mouse and
start QS for testing...external mice/keyboard should be recognized...
if the answer is yes...
i think its better to set the XP system to fresh factory recover ,
if you answer all upper quest with no your S10e mainboard could be broken , so you have to call for service..
END
Did you install the system self... ?
yes
Did you have complete XP with SP3 install ?
yes
Did you have shrink windows with nlite ?
yes
Did you install all drivers chipset and so on ..
Did you have yellow signs in the system device manager ?
hope that you find the solution...
sincerely KalvinKlein
Message Edited by KalvinKlein on 06-06-2009 01:21 AM
Thinkies 2x X200s/X301 8GB 256GB SSD @ Win 7 64
Ideas Centre A520 ,Yoga 2 256GB SSD,Yoga 2 tablet @ Win 8.1

Optical Encoder with NI 6052E

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