Getting data from a photodetector using LABVIEW

I have an infra red interferometer and I am using an IR photodiode in my setup. I have a connector box and a DAQ card ( model number NI-PCI-MIO-16E1). How can i use labview to get intensity data versus time ?

Unlike Paul wrote, I would suggest to use RSE instead of Differential, as the photodiode is not grounded. Otherwise you will pick up massive (sometimes above input limits) power line signal.
Felix
www.aescusoft.de
My latest community nugget on producer/consumer design
My current blog: A journey through uml

Similar Messages

How do i get data from a structure using join?

hi,
what is the actual use of a structure.?
my problem is :
KUAGV is an existing STRUCTURE. it has got one fields each which links to MARA, AND VBKD tables. i want to fetch all related information from KUAGV, mara, vbkd . which is the better way : using joins or views or anything else? how do i
get data from a structure using join?

structure temporarily holds any data passed to it dynamically throughout the runtime but doesnot store it permanently. so
a structure cannot be included in a join.so instead of incuding structure KUAGV's field in a join
search the transparent table in which same field are present and use it in join.
A structure if created in DDIC(Data Dictionary) is a global DATA STRUCTURE which is used to group related information, for example you would group all the details of your bank account into a structure BANK_ACCOUNT that contains fields like account_Id, account_holder_name etc.
If you create a structure in your program then it is local to your program. So you use this structure to create data holders of this DATA TYPE to hold data in your program.
Edited by: suja thomas on Feb 11, 2008 6:24 AM
Edited by: suja thomas on Feb 11, 2008 6:31 AM

Best way To get data from another application using NDDE lbrary

My vb.net application gets data from another application using NDDE Library. I got stocks prices (open,high,low,close,volume,change......(about 15 records for each stock)) (about 200 stocks) . I don't know if there is a problem in my code.
This is my code:
l : is the list of stocks.
This Sub connects to server and requests the data :
Public Shared Sub GetQuotes()
Try
client1 = New DdeClient(server, topic)
client1.Connect()
For i As Integer = 0 To l.Count - 1
client1.StartAdvise("QO." & l(i).t & ".TAD$last", 1, True, 60000)
client1.StartAdvise("QO." & l(i).t & ".TAD$open", 1, True, 60000)
client1.StartAdvise("QO." & l(i).t & ".TAD$high", 1, True, 60000)
client1.StartAdvise("QO." & l(i).t & ".TAD$low", 1, True, 60000)
client1.StartAdvise("QO." & l(i).t & ".TAD$pclose", 1, True, 60000)
client1.StartAdvise("QO." & l(i).t & ".TAD$volume", 1, True, 60000)
client1.StartAdvise("QO." & l(i).t & ".TAD$date", 1, True, 60000)
client1.StartAdvise("QO." & l(i).t & ".TAD$time", 1, True, 60000)
Next
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
and then I get the data from Client_advise sub (called each time a value changed )and fill the list. What I know is that client advise gets only one record for single stock each time is called..
Example: for stock AAPL. 1st time enters client_Advise I get open price for AAPL, 2nd time I get high price for AAPL,3rd time I get low price..... and I update the value in the List (l)
This the client_Advise Sub:
Private Shared Sub client1_Advise(ByVal sender As Object, ByVal e As NDde.Client.DdeAdviseEventArgs) Handles client1.Advise
For q As Integer = 0 To l.Count - 1
If l(q).t = w(1) Then
Dim item() As String = e.Item.Split("$")
If l(q).Open = "#" Then
l(q).Open = "0"
End If
If l(q).hi = "#" Then
l(q).hi = "0"
End If
If l(q).lo = "#" Then
l(q).lo = "0"
End If
If l(q).Close = "" Or l(q).Close = "#" Then
l(q).Close = "0"
End If
If l(q).pclose = "#" Then
l(q).pclose = "0"
End If
If item(1) = "open" Then
l(q).Open = Format(Val(e.Text), "0.00")
ElseIf item(1) = "last" Then
l(q).Close = Format(Val(e.Text), "0.00")
ElseIf item(1) = "high" Then
l(q).hi = Format(Val(e.Text), "0.00")
ElseIf item(1) = "volume" Then
l(q).Volume = Val(e.Text)
ElseIf item(1) = "low" Then
l(q).lo = Format(Val(e.Text), "0.00")
ElseIf item(1) = "pclose" Then
l(q).pclose = Format(Val(e.Text), "0.00")
If l(q).pclose <> "" And l(q).pclose <> "#" And l(q).Close <> "" And l(q).Close <> "#" Then
l(q).c = Format(l(q).Close - l(q).pclose, "0.00")
l(q).cp = Format(((l(q).Close - l(q).pclose) / l(q).pclose) * 100, "0.00")
End If
l(q).flag1 = 2
ElseIf item(1) = "date" Then
l(q).Date1 = e.Text
ElseIf item(1) = "time" Then
l(q).Time = e.Text
End If
Exit For
End If
Next
End Sub
Am I doing something wrong which inreases CPU usage to 80 or 90 % ?
Thanks in advance.

Hi MikeHammadi,
According to your description, you'd like to get data from another app using NDDE library.
When using the NDDE library, the CPU usage is high. As the NDDE library is third-party library, it is not supported here. I suggest you checking if the problem is caused by the NDDE library.
If you'd like to get data from another app. I suggest you could save the data in the dataBase, and then read it in another application if necessary.
If you have any other concern regarding this issue, please feel free to let me know.
Best regards,
Youjun Tang
We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
Click
HERE to participate the survey.

How to get data from live site using C# on grid view

hi, how am I able to get data from a website and display it in a grid view ?
Can anyone show me how I would do this? Thanks

Hello,
This post does not fit to this forum, read the
stickies.
Regards, Eyal Shilony

Getting Data From MySQL Database using Dreamweaver CS4 Built In Functions

Hi,
I am really in need of some help if you don't mind.
I basically have a website with user regsitration system etc and so on.
I basically connected to my Data Base in Dreamweaver CS4 and now want to use the tools in Dremweaver CS4 to display Data from database.
Problem is i see the tools but not really sure how i use them. I see on Data bar all the tools to view, update delete records etc.
I basically created a page where i want to display all the records in the DB. I done this using dynamic data selecting what fields to display etc and 15 records per page.
When i view the page in localhost thou it is only showing 1 record althou i have like 5 users in my test db.
So if anyone can really tell me how i go about displaying data from db that be great. When i learn how to do that i probably will understand and learn how to update records etc.
Thanks

To display all records, you need to apply a repeat region to the paragraph, div, or table row that contains the dynamic text objects for the database results. You might also find it helpful to follow the dynamic application tutorial in the Adobe Developer Connection.

GETTING DATA FROM ODS BY USING A FUNCTION MODULE..

Hi Frnzs,
Here is my issue..Plz go thru it..
I have a function module (YFSF_ICR_GET_EXCHG_RATE_ODS).
the function performs the current logic without any changes,
that is reading SPOT rates for actuals (the planning cycle is empty) or S rates
for forecasts based on the planning cycle. Nothing needs to be changed here
concultion : Based on flag I_ICR ni , we have to read new exchange rates ( From ODS)
the fucntion module code is here
FUNCTION yfsf_icr_get_exchg_rate_ods.
""Local interface:
*" IMPORTING
*"     REFERENCE(I_PLANCYC) TYPE /BIC/OIYPLANCYC OPTIONAL
*"     REFERENCE(I_SALESORG) TYPE /BI0/OISALESORG OPTIONAL
*"     REFERENCE(I_IC) TYPE /BIC/OIYINVCURR
*"     REFERENCE(I_RC) TYPE /BIC/OIYREPCURR
*"     REFERENCE(I_FISCPER) TYPE /BI0/OIFISCPER
*" EXPORTING
*"     REFERENCE(E_EXG) TYPE /BI0/OIEXCHG_RATE
*" EXCEPTIONS
*"      NO_RATE_FOUND
DATA: l_s_exg TYPE /bic/ayfsfexg00,
        l_t_exg TYPE /bic/ayfsfexg00 OCCURS 0,
        l_year TYPE /bi0/oifiscyear.
IF i_plancyc IS INITIAL.
Actuals
    FREE l_t_exg.
    SELECT *
      INTO CORRESPONDING FIELDS OF TABLE l_t_exg
      FROM /bic/ayfsfexg00
      WHERE fiscper <= i_fiscper
        AND fiscvarnt = 'JJ'
        AND /bic/yrepcurr = i_rc
        AND /bic/yinvcurr = i_ic
        AND /bic/yplancyc = ''
        AND /bic/yexchtype = 'SPOT'
     ORDER BY fiscper DESCENDING.
    IF sy-subrc <> 0.
      RAISE no_rate_found.
    ELSE.
      READ TABLE l_t_exg INTO l_s_exg INDEX 1.
      e_exg = l_s_exg-exchg_rate.
    ENDIF.
ELSE.
Forecasts
    l_year = i_fiscper+0(4).
    SELECT SINGLE *
      INTO l_s_exg
      FROM /bic/ayfsfexg00
      WHERE fiscvarnt = 'JJ'
        AND fiscyear = l_year
        AND salesorg = i_salesorg
        AND /bic/yrepcurr = i_rc
        AND /bic/yinvcurr = i_ic
       AND /bic/yplancyc = i_plancyc
        AND /bic/yplancyc = ''
        AND /bic/yexchtype = 'S'
        AND exchg_rate GE '0.0000001'.
    IF sy-subrc <> 0.
      RAISE no_rate_found.
    ELSE.
      e_exg = l_s_exg-exchg_rate.
    ENDIF.
ENDIF.
ENDFUNCTION.
ok
now my requirement is that I need to enhance the Function module for reading exchange rates.
for this i got the following information:
- It requires an additional flag I_ICR for instance that can be empty or 'X'
for instance
   - If the flag is empty, the function performs the current logic without any changes,
that is reading SPOT rates for actuals (the planning cycle is empty) or S rates
for forecasts based on the planning cycle. Nothing needs to be changed here
   - If the flag is 'X', the function reads a new exchange rate type, let's call
it "ICR". As stated in the requirements and functional specs, these exchange rates
are the Reuter rates valid for a complete year. These are fixed rates so no planning
cycle. The users will enter records in the format (year, reporting currency, invoicing
currency, exchange rate). If the input flag I_ICR is X, the function determines
the year based on the input period, then, based on the year it selects on the same
table as for the other exchange rates with a restriction on exchange rate type "ICR",
year, from and to currency and return the exchange rate
Update rules. There are two:
   - To the consolidation ODS. No changes are required there; the function has to
read either S or SPOT rates (I_ICR flag is empty)
   - From the consolidation ODS to the cube. As stated in my previous email, the
from currency is the one available in the data package. The to currency is determined by reading the sales organization master data (reporting currency attribute) based on the inter-company sales organization (also available in the incoming record). It then calls the function module above with the parameter I_ICR set to 'X' so it reads the Reuter rates.
I guess i need to create another function module and can be used.
Observation
ODS table fields.
- FISCPER
- FISCVARNT JJ
- FISCYEAR 2006
- /BIC/YREPCURR EUR
- /BIC/YINVCURR JPY
- SALESORG 0010
- /BIC/YMRC 3090
- /BIC/YPLANCYC
- /BIC/YEXCHTYPE S
- - RECORDMODE
Thanx in advance..

Haii
I have given below the basic functionality..u can go throught the api and start working..
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import java.io.File;
import org.w3c.dom.Document;
public class OrderProcessor {
   public static void main (String args[]) {
      File docFile = new File("orders.xml");
      Document doc = null;
      try {
         DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
         DocumentBuilder db = dbf.newDocumentBuilder();
         doc = db.parse(docFile);
       Element root = doc.getDocumentElement();
      System.out.println("The root element is " + root.getNodeName());
     NodeList children = root.getChildNodes();
   System.out.println("There are "+children.getLength()
                                  +" nodes in this document.");
      } catch (Exception e) {
         System.out.print("Problem parsing the file.");
}regards
Shanu

Without NI DAQ device- how to get data from MSP into labVIEW and process it

Hi,
I do not have an NI DAQ device. I have an MSP430 and my sensor is an ADXL335 Accelerometer. How do I get data from my MSP into labVIEW and process it?
Just looking for a nudge in the right direction. I'm having a hard time finding resources on labVIEW that don't involve NI specific DAQs.
Thanks in advance,
Aziz

There are many ways to get data into LabVIEW that do not involve NI-DAQ devices.
I think your easiest option would be to stream it via serial port if the data rate isn't too fast.
Troy
CLDEach snowflake in an avalanche pleads not guilty. - Stanislaw J. Lec
I haven't failed, I've found 10,000 ways that don't work - Thomas Edison
Beware of the man who won't be bothered with details. - William Feather
The greatest of faults is to be conscious of none. - Thomas Carlyle

JSON - get data from Oracle table

Hi all,
I hope it is correct thread...
My need is to get data from oracle table using JSON and show output at html table. I'm very new to JSON (got some experience in PL/SQL and basic html knowledge). Could someone direct me to manual or give me simple example?

JSON is a way to format data, not a way to fetch data. Call it an alternative to XML.
Are you perhaps talking about doing an ajax request to fetch data?

How to get data from a USB-UIRT device using Labview?

How to get data from a USB-UIRT device using Labview?
I'm trying to get data from a USB-UIRT device, is it posible with Labview?
I really appreciate your help,
thanks

You may want to contact the developer of the device for the API and DLL.
http://65.36.202.170/phpBB2/viewforum.php?f=3

Not able to extract performance data from .ETL file using xperf commands. getting error "Events were lost in this trace. Data may be unreliable ..."

Not able to extract performance data from .ETL file using xperf commands.
Xperf Commands:
xperf –i C:\TempFolder\Test.etl -o C:\TempFolder\BootData.csv –a process
Getting following error after executing above command:
"33288636 Events were lost
in this trace.
Data may be unreliable
This is usually caused
by insufficient disk bandwidth for ETW lo
gging.
Please try increasing the minimum
and maximum number of buffers
and/or
the buffer size.
Doubling these values would be a good first at
tempt.
Please note, though, that
this action increases the amount of me
mory
reserved
for ETW buffers, increasing memory pressure on your sce
nario.
See "xperf -help start"
for the associated command line options."
I changed page size file but its does not work for me.
Any one have idea, how to solve this problem and extract ETL file data.

I want to mention one point here. I have total 4 machines out of these 3 machines above
commands working properly. Only one machine has this problem.<o:p></o:p>
Hi,
I consider that you can try to use xperf to collect the trace etl file and see if it can be extracted on this computer:
Refer to following articles:
start
http://msdn.microsoft.com/en-us/library/windows/hardware/hh162977.aspx
Using Xperf to take a Trace (updated)
http://blogs.msdn.com/b/pigscanfly/archive/2008/02/16/using-xperf-to-take-a-trace.aspx
Kate Li
TechNet Community Support

Help needed with variable - trying to get data from Oracle using linked svr

Sorry if I posted this in the wrong forum - I just didn't know where to post it.
I'm trying to write a simple stored procedure to get data from an oracle database via a linked server in SQL Enterprise manager. I have no idea how to pass a variable to oracle.
Here's how I would get the variable in SQL:
declare @maxkey INTEGER
select @maxkey= MAX(keyfield) from [server].Data_Warehouse.dbo.mytable
select * from [server].Data_Warehouse.dbo.mydetailtable where keyfield=@maxkey
the select statement I need to do in oracle would use that variable like this:
select * from OPENQUERY(OracleLinkedServer,'select
* from ORACLEDB.TABLE where keyfield > @maxkey')
and I get this message: OLE DB provider "OraOLEDB.Oracle" for linked server "OracleLinkedServer" returned message "ORA-00936: missing expression".
I realize that I can't pass the @maxkey variable to oracle - so how do I accomplish this?

Please refer the example in this link which deals with Oracle date format.
You can finnd a command DECODE which is used for date formats. If you have a look at whole theory then you will get an idea.
Link:[Bulk insert SQL command to transfer data from SAP to Oracle|http://sap.ittoolbox.com/groups/technical-functional/sap-dev/bulk-insert-sql-command-to-transfer-data-from-sap-to-oracle-cl_sql_connection-3780804]

How can I get Data from the Sound cart in Labview? Does a VI exist?

How can I get Data from the Sound cart in Labview? Does a VI exist?

Yes, there are VIs for acquiring data from Sound cards. And examples too. If you don't have LabVIEW yet, do a search on NI's site for example VIs.
Khalid

How can i get data from another database SQL Server use database link from

I have a database link from Oracle connect to SQL Server database with user cdit connect default database NorthWind.How can I get data from another database(this database in this SQL Server use this database link)?

hi,
u should see following documentation:
Oracle9i Heterogeneous Connectivity Administrator's Guide
Release 1 (9.0.1)
Part Number A88789_01
in it u just go to chapter no. 4 (using the gateway),,u'll find ur answer there.
regards
umar

How to get data from Oracle using Native SQL in SAP.. Problem with date

Hi Masters.
I'm trying to get data from an Oracle DB. I was able to connect to Oracle using tcode DBCO. The connetion works fine
I wrote this code and it works fine without the statement of where date > '01-09-2010'
But i need that statement on the select. I read a lot about this issue, but no answer.
My code is (this code is in SAP ECC 6.0)
DATA: BEGIN OF datos OCCURS 0,
      id_numeric(10),
      component_name(40),
      comuna(10),
      record_id(10),
      status,
      sampled_date(10),
      END OF datos.
DATA: c TYPE cursor.
EXEC SQL.
connect to 'LIM' as 'MYDB'
ENDEXEC.
EXEC SQL.
SET CONNECTION 'MYDB'
ENDEXEC.
EXEC SQL PERFORMING loop_output.
SELECT ID_NUMERIC, COMPONENT_NAME, COMUNA, RECORD_ID, STATUS, SAMPLED_DATE
into :datos from lims.SAMP_TEST_RESULT
where     date > '01-09-2010'
ENDEXEC.
EXEC SQL.
disconnect 'MYDB'
ENDEXEC.
How can i get the data from that date?? If i delete the where statemet, the program works well, it takes 30 mins and show all the data, I just need the data from that date.
Any help
Regards

Please refer the example in this link which deals with Oracle date format.
You can finnd a command DECODE which is used for date formats. If you have a look at whole theory then you will get an idea.
Link:[Bulk insert SQL command to transfer data from SAP to Oracle|http://sap.ittoolbox.com/groups/technical-functional/sap-dev/bulk-insert-sql-command-to-transfer-data-from-sap-to-oracle-cl_sql_connection-3780804]

Trying to use FTP to get data from a different server

Hi Friends,
    I have to use FTP to get data from a different server and upload it on SAP server. Now my problem is when I m trying to do ftp through command line it brings the file but with no data.
   Through ABAP program nothing is happening.
Here's my code--
V_PASSWORD = 'test@123'.
V_PWD_LEN = STRLEN( V_PASSWORD ).
CALL FUNCTION 'HTTP_SCRAMBLE'
    EXPORTING
      SOURCE      = V_PASSWORD
      SOURCELEN   = V_PWD_LEN
      KEY         = CS_KEY_500098
    IMPORTING
      DESTINATION = V_PASSWORD.
CALL FUNCTION 'FTP_CONNECT'
    EXPORTING
      USER            = 'test'
      PASSWORD        = V_PASSWORD
      HOST            = '176.0.1.6'
      RFC_DESTINATION = 'SAPFTPA'
    IMPORTING
      HANDLE          = MI_HANDLE
    EXCEPTIONS
      NOT_CONNECTED   = 1
      OTHERS          = 2.
CHECK SY-SUBRC = 0.
cmd = 'lcd d:\ftp'. .
PERFORM FTP_COMMAND USING CMD.
CMD = 'asc'.
PERFORM FTP_COMMAND USING CMD.
CONCATENATE 'dir' 'ftpt*' INTO CMD SEPARATED BY SPACE.
PERFORM FTP_COMMAND USING CMD.
cmd = 'ls'.
concatenate 'ls' INTO CMD SEPARATED BY SPACE.
PERFORM FTP_COMMAND USING CMD.
cmd = 'mget trial.txt'.
CONCATENATE 'mget' 'trial.txt' INTO CMD SEPARATED BY SPACE.
CALL FUNCTION 'FTP_COMMAND'
    EXPORTING
      HANDLE        = MI_HANDLE
      COMMAND       = CMD
    TABLES
      DATA          = MTAB_DATA1
    EXCEPTIONS
      TCPIP_ERROR   = 1
      COMMAND_ERROR = 2
      DATA_ERROR    = 3
      OTHERS        = 4.
IF SY-SUBRC = 0.
    LOOP AT MTAB_DATA1.
      WRITE: / MTAB_DATA1.
    ENDLOOP.
ELSE.
    CONCATENATE 'Error in FTP Command while executing' CMD INTO ERROR SEPARATED BY SPACE.
    WRITE: / ERROR.
ENDIF.

Hi
try this.....in one of my reqt, i done this successfully....
FORM FTPCON.
FTP-------------------------------------------------------*
CLEAR DSTLEN.
SET EXTENDED CHECK OFF.
DSTLEN = STRLEN( S_PWD ).     -
> (S_PWD (password) is a selection screen field )
CALL FUNCTION 'HTTP_SCRAMBLE'
    EXPORTING
      SOURCE      = S_PWD
      SOURCELEN   = DSTLEN
      KEY         = KEY
    IMPORTING
      DESTINATION = S_PWD.
CALL FUNCTION 'FTP_CONNECT'
    EXPORTING
      USER            = P_USER                   -
> Username
      PASSWORD        = S_PWD             -
> password
      HOST            = P_HOST                  -
> Host
      RFC_DESTINATION = P_DEST         -
> Destination
    IMPORTING
      HANDLE          = HDL
    EXCEPTIONS
      NOT_CONNECTED   = 1
      OTHERS          = 2.
IF SY-SUBRC <> 0.
    MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
            WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
CALL FUNCTION 'FTP_COMMAND'
    EXPORTING
      HANDLE        = HDL
      COMMAND       = 'set passive on'
    TABLES
      DATA          = RESULT
    EXCEPTIONS
      TCPIP_ERROR   = 1
      COMMAND_ERROR = 2
      DATA_ERROR    = 3.
CALL FUNCTION 'FTP_R3_TO_SERVER'
    EXPORTING
      HANDLE         = HDL
      FNAME          = G_FCNAME
      CHARACTER_MODE = 'X'
    TABLES
      TEXT           = T_FILE1
    EXCEPTIONS
      TCPIP_ERROR    = 1
      COMMAND_ERROR = 2
      DATA_ERROR     = 3
      OTHERS         = 4.
IF SY-SUBRC <> 0.
    MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
CALL FUNCTION 'FTP_R3_TO_SERVER'
    EXPORTING
      HANDLE         = HDL
      FNAME          = G_FCNAME1
      CHARACTER_MODE = 'X'
    TABLES
      TEXT           = T_FILE2
    EXCEPTIONS
      TCPIP_ERROR    = 1
      COMMAND_ERROR = 2
      DATA_ERROR     = 3
      OTHERS         = 4.
IF SY-SUBRC <> 0.
    MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
CALL FUNCTION 'FTP_DISCONNECT'
    EXPORTING
      HANDLE = HDL.
CALL FUNCTION 'RFC_CONNECTION_CLOSE'
      EXPORTING
        DESTINATION          = P_DEST
      EXCEPTIONS
        DESTINATION_NOT_OPEN = 1
        OTHERS               = 2.
    IF SY-SUBRC <> 0.
      MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
    ENDIF.
ENDFORM.                    " FTPCON
Hope it helps.....

Getting data from a photodetector using LABVIEW

Similar Messages

Maybe you are looking for