measure chain Gain in TDD system

Similar Questions

• At the request of measures chained

  I tried to create a chain of scheduler in Oracle 11.2 to kickoff of the steps based on a calendar.  Here is an example of script I used to try it, what I would like is step 1 to run with the beginning of the string, then Step2 to run on a schedule, then step 3 to run once step 1 and step 2 are completed.  It is a process every night where Step1 perform, at midnight, then Step2 run at 01:00.  The step that I have problems with is defining the beginning of step 2 is at line 134.

  Also, I couldn't find an example of using DBMS_SCHEDULER. DEFINE_CHAIN_EVENT_STEP using the event_schedule_name overload, so if someone has met one please share.

  /* CREATE TABLE */
  Create table chain_table
  (
      chain_ts timestamp default current_timestamp,
      chain_step varchar2(100)
  );
  
  
  /* CREATE PROCEDURE */
  create procedure chain_test_proc
  (
      step_name in varchar2
  ) as
  begin
      execute immediate 'insert into chain_table (chain_step) values (:1)'
      using step_name;
      commit;
  end chain_test_proc;
  /
  
  
  /* CREATE SCHEDULE */
  begin
      dbms_scheduler.create_schedule
      (
          repeat_interval  => 'FREQ=MINUTELY;',    
          start_date => to_timestamp_tz('2014-03-17 12:14:00.000000000 AMERICA/CHICAGO','YYYY-MM-DD HH24:MI:SS.FF TZR'),
          comments => 'Runs minutely for testing',
          schedule_name  => '"STEP2_SCHEDULE"');
  end;
  /
  
  
  
  
  
  
  /* CREATE PROGRAMS */
  begin
      dbms_scheduler.create_program
      (
          program_name => 'STEP1_PROGRAM',
          program_action => 'CHAIN_TEST_PROC',
          program_type => 'STORED_PROCEDURE',
          number_of_arguments => 1,
          comments => null,
          enabled => false
      );
      dbms_scheduler.define_program_argument
      (
          program_name => 'STEP1_PROGRAM',
          argument_position => 1,
          argument_name => 'STEP_NAME',
          argument_type => 'VARCHAR2',
          default_value => 'STEP1',
          out_argument => false
      );
  
  
  
  
      dbms_scheduler.create_program
      (
          program_name => 'STEP2_PROGRAM',
          program_action => 'CHAIN_TEST_PROC',
          program_type => 'STORED_PROCEDURE',
          number_of_arguments => 1,
          comments => null,
          enabled => false
      );
      dbms_scheduler.define_program_argument
      (
          program_name => 'STEP2_PROGRAM',
          argument_position => 1,
          argument_name => 'STEP_NAME',
          argument_type => 'VARCHAR2',
          default_value => 'STEP2',
          out_argument => false
      );
  
  
      dbms_scheduler.create_program
      (
          program_name => 'STEP3_PROGRAM',
          program_action => 'CHAIN_TEST_PROC',
          program_type => 'STORED_PROCEDURE',
          number_of_arguments => 1,
          comments => null,
          enabled => false
      );
      dbms_scheduler.define_program_argument
      (
          program_name => 'STEP3_PROGRAM',
          argument_position => 1,
          argument_name => 'STEP_NAME',
          argument_type => 'VARCHAR2',
          default_value => 'STEP3',
          out_argument => false
      );
  
  
      dbms_scheduler.enable ('STEP1_PROGRAM');
      dbms_scheduler.enable ('STEP2_PROGRAM');
      dbms_scheduler.enable ('STEP3_PROGRAM');
  
  
  end;
  /
  
  
  
  
  
  
  begin
  /* CREATE CHAIN */
      sys.dbms_scheduler.create_chain
      (
          chain_name          => 'MY_CHAIN',
          rule_set_name       => null,
          evaluation_interval => null,
          comments            => null
      );
  
  
  /* CREATE CHAIN STEPS */
      sys.dbms_scheduler.define_chain_step
      (
          chain_name          => 'MY_CHAIN',
          step_name           => 'STEP1_PROG',
          program_name        => 'STEP1_PROGRAM'
      );
  
  
      sys.dbms_scheduler.define_chain_step
      (
          chain_name          => 'MY_CHAIN',
          step_name           => 'STEP2_PROG',
          program_name        => 'STEP2_PROGRAM'
      );
  
  
      sys.dbms_scheduler.define_chain_event_step
      (
          chain_name          => 'MY_CHAIN',
          step_name           => 'STEP2_SCHED',
          event_schedule_name => 'STEP2_START_SCHEDULE'
      );
  
  
      sys.dbms_scheduler.define_chain_step
      (
          chain_name          => 'MY_CHAIN',
          step_name           => 'STEP3_PROG',
          program_name        => 'STEP3_PROGRAM'
      ); 
  
  /* CREATE CHAIN RULES */
      -- Start of Chain
      sys.dbms_scheduler.define_chain_rule
      (
          chain_name          => 'MY_CHAIN',
          condition           => 'TRUE',
          action              => 'START STEP1_PROG',
          rule_name           => 'STEP1',
          comments            => null
      );
  
  
      -- Step having issues with
      sys.dbms_scheduler.define_chain_rule
      (
          chain_name          => 'MY_CHAIN',
          condition           => 'STEP2_SCHED COMPLETED',
          action              => 'START STEP2_PROG',
          rule_name           => 'STEP2',
          comments            => 'Runs on a schedule'
      );
  
  
      -- Last step
      sys.dbms_scheduler.define_chain_rule
      (
          chain_name          => 'MY_CHAIN',
          condition           => 'STEP1_PROG COMPLETED AND STEP2_PROG COMPLETED',
          action              => 'START STEP3_PROG',
          rule_name           => 'STEP3',
          comments            => null
      );
  
  
      -- End Chain
      sys.dbms_scheduler.define_chain_rule
      (
          chain_name          => 'MY_CHAIN',
          condition           => 'STEP3_PROG COMPLETED',
          action              => 'END',
          rule_name           => 'END_CHAIN',
          comments            => null
      );
  
  
  /* ENABLE CHAIN */
      dbms_scheduler.enable (name => 'MY_CHAIN');
  
  
  end;
  /
  
  
  /* RUN CHAIN */
  -- exec dbms_scheduler.run_chain (chain_name => 'MY_CHAIN', start_steps => null, job_name => null);
  
  
  
  
  
  
  
  
  /* ROLLBACK
  
  
      -- Drop Chain
      exec dbms_scheduler.drop_chain ('MY_CHAIN');
  
  
      -- Drop Programs
      exec dbms_scheduler.drop_program ('STEP1_PROGRAM, STEP2_PROGRAM, STEP3_PROGRAM');
  
  
      -- Drop Schedule
      exec dbms_scheduler.drop_schedule ('STEP2_SCHEDULE');
     
      -- Drop table
      drop table chain_table;
  
  
      -- Drop procedure
      drop procedure chain_test_proc;
  
  
  */
  
  

  We have the same problem.

  We have created the chain with two or three steps. String starts at 22:00 and an intermediate step in the chain cann't be launched before midnight. So, we created a simple step called wait_till_midnight and put this stage before the stage of cann't be started before midnight.

  This step of wait_till_midnight is very simple. It checks the real-time and if it's after midnight, it end immediately if not then she count how long we have to wait for a call dbms_lock.sleep then.

  the code is

  PROCEDURE wait_till_midnight IS
      v_sysday    NUMBER(6);
      v_sec2sleep NUMBER(5);
      c_job_ident CONSTANT VARCHAR2(30) := 'wait_till_midnight';
      v_id_log supp.pkg_operation_log.type_id_operation_log;
  BEGIN
      v_id_log := supp.pkg_operation_log.f_start(c_job_ident);
      v_sysday := to_number(TO_CHAR(supp.ifc_supp.get_sys_date, 'HH24MISS'));
      -- are we before midnight
      IF (v_sysday < 240000)
         AND (v_sysday > 200000)
      THEN
          v_sec2sleep := ((trunc(supp.ifc_supp.get_sys_date + 1) - supp.ifc_supp.get_sys_date) * 86400) + 60;
          -- wait to one minute after midnight
          dbms_lock.sleep(seconds => v_sec2sleep);
      END IF;
      supp.pkg_operation_log.p_finish(v_id_log, 'FINISHED');
  EXCEPTION
      WHEN OTHERS THEN
          supp.pkg_operation_log.p_output(v_id_log, 'ERROR', c_job_ident || ': ' || substr(SQLERRM, 1, 200));
          supp.pkg_operation_log.p_finish(v_id_log, 'ERROR');
  END;
  

  The rule to start the setp is now very simple = "wait_till_midnight COMPLETED.

• SISO TDD OFDM Streaming Video on NEITHER RIO or FlexRIO USRP

  Hello!

  How has the Full Duplex was assured in USRP RIO?

  In accordance with the document of this example, the simultaneous transmission of receiver chain is possible at the same frequency. If I take this right has component the interference of the transmitter Tx1 and RX1 was completely canceled for transposition Full Duplex.

  Or the FD is possible for an arrangement of the antenna?

  Thank you

  Understood that here Full Duplex doesn't mean full-duplex, we speak in reception and simultaneous transmission of documents i.e. contemporaries.  Here, it's a TDD system, where two data sources can be listened in conjunction, rising and falling, for example as in the No. loopback condition.  Simultaneous, albeit two multiplexes in time, flow: downlink uplink (base station user) (base station for the user).

• Measure the time difference between a digital output and an analog input that responded to the questionnaire

  Hallo,

  I use the following system:

  • OR PXI-1044 with controller NI PXI-8109
  
  
  • OR PXI-2564 switch module to turn on the monitor of my test device
  
  
  • Data acquisition multifunction NI PXI-6259 to measure the signal that responded to the questionnaire jump

  The two cards are the same - PXI trigger bus. For both, PXI-2564 and PXI-6259 I use DAQmx to set the reading and writing of the channels.

  Now, I want to measure the time between the digital output, my unit turns and the analog input, which measures the response of my system.

  I can't do work by myself, please help me!

  I thank Ludwig.

  Hi Ludwig,.

  If you can't give us any VI we have difficulties with to help you.

  Because I Donat knowledge how your program is mounted it is not easy to know where you should enter signals.

  Here's a question similar to yours:

  http://forums.NI.com/T5/LabVIEW/best-way-to-measure-time/TD-p/178704

  and 2 external links:

  http://www.ehow.com/how_8698983_measure-time-LabVIEW.html

  http://objectmix.com/LabVIEW/385152-how-can-i-use-LabVIEW-measure-time-between-analog-pulses.html

• measure of the latency on an insert in the cache

  I'm looking forward to know best practices on the measurement of latency on an insert in the cache.
  Imagine that we have a fill of storage cache disabled on one side than tags given with such a notion of time before mailing in cluster. On the other side a client connected to the proxy listens to eventInsert or something similar, to recover the stored object and label it once again, then the latency would be the tag2 - tag1.
  
  Whereas we expect this number is of the order of milliseconds (< 5ms), what is the best way to accurately measure (perhaps independent of time system).
  my group is based on Windows. I am aware of the granularity of 15ms on System.currentTimeMillis (), and also the dependence / System.nanoTime processor (), making them practically useless/incorrect in this scenario.
  
  What is the alternative/practice option?
  Coherence provides a timing specific, consistent, high resolution on the cluster that I can use?

  Hi Dadashy,

  Thanks for pointing these stupid mistakes about cMillis vs cMillisTotal, and leaving off some fairly significant zeros, I corrected the original message.

  As for the relevance of the conversion of millis, nanos, I maintain that it is a viable approach to subsidiary millisecond latency measurement. The reason why it 'works' for going of millis, nanos is the same reason that it works from a 16ms near a 1ms clock. Of course "works" here, there is good enough to make an estimate, not "bet your life on it. The precision of the estimate increases with the number of samples taken, in the same way to make higher resolution (nano) estimates that you will need lots of samples. I imagine that there are formulas to determine how many samples is necessary to calculate how much is "lots and lots", in accordance with the resolution of the clock, but these calculations are beyond my skills. I imagine something like tens of millions of samples if you want to try to get one nano second accuracy of a clock of millisecond resolution.

  In regard to the application of this technique to the problem have described it. The important parts is that you can stamp the work to its entry in the system and wear this timestamp to the end of the book. Evaluate the delta between "now" and the starting point, using the system on which the work was produced, and then finally produce a sum of the total 'work time' somewhere to allow you to calculate the average. There should be no problem with the addition of intermediate layers as much as long as you can do the above.

  Thank you

  Mark

  The Oracle coherence

• Smart View decimal

  I created the report in analytics (connected in English) which consists of the fields of a chain and a single measure (which is formatted by using the thousands separator):

  MEASURE CHAIN

  -----------------------------------

  First 1 000 223

  Second 2 002 322

  When I connect Analytics using a different language (Croatian) the same report appears in the form:

  MEASURE CHAIN

  ------------------------------------

  First 1.000.223

  Second 2.002.322

  This is as expected because in Croatia point is used as the thousands separator and the comma as separator decimal (European system).

  But when I export the report using Smart view to Excel, the data is exported in the first way (having first formatting)

  Since my excel is set to recognize the comma as decimal separator and a period as separator of thousands, the data I export Analytics is unusable. (Keep in mind, that I have even other data excel already formatted in "European way")

  Is there a solution for this problem?

  Do I have to make some corrections in analytics in Excel or in the parameters of SmartView?

  Thanks in advance for the help.

  I solved it by installing the new version of SmartVIew 11.1.2.5.

  It was an older version of the SV.

• Issue of video output P6240Y

  I have a HP P6230Y with Radeon HD 4200 integrated video card. It is limited to VGA and DVI as outputs. The question is: is this component of support for the Radeon HD 4200 function via the DVI port?

  I'm looking to convert the RGB output (Y, Pb, Pr) for a stream to my TV through my home theatre video high definition DVI.

  I hope that the DVI / conversion cable component RCI 3 of monoprice.com will do this for me but I want to make sure before I buy!

  Thanks in advance!

  Starootoo, welcome to the forum.

  The HD 4200 is integrated into the motherboard; not a dedicated video card.  It shares system memory.  I doubt it will do what you describe.  However, I can't say with certainty.  Embedded video is not the best to make more power of a monitor, in my opinion.

  I suggest that you add a dedicated video (PCIE x 16) card to the system with HDMI capability.  This would make the upgrade of power supply (PSU) necessary.  It would give you a good amount of performance share gain is not system memory.

  Please let us know if this solved your problem or not.

• XW4200: Processor Max for xw4200?

  I'm running a 3.4 GHz Pentium IV (551) in my xw4200 and I know a Pentium to 3.8 GHz (571) is a quick replacement... but I'm greedy...
  
  Will be a Pentium 670 or 672 work? The 670 is also 3.8 GHz but has 2 MB of cache instead of the 1 on the 551 and 571, and 672 a 2 MB cache and improved visualization. I don't really need a 672, and they are expensive and difficult to find, so the 670 is my real question. Will be the xw4200 freak to irritate more additional cache and refuse to work, or do I have the green light?

  @mbaysdell, welcome to the forum.

  I checked the specifications of the 551 and 670.  The only difference that concerns me is the TDP.  The 551 84W and the 670 is 115W.  I don't know the maximum TDP for the HP motherboard.  I couldn't find it in the specifications.

  Personally, I am not sure you will see much performance gain of the system with 670 on the 551.

• DAQ in Veristand readings do not match the MAX readings

  I have three accelerometers attached to a block of SCB-68 connection that is connected to an NI PXI-6221 data acquisition on a RT system. I have created a task for each accelerometer in MAX and have tested each one to see that it works and gives appropriate readings. Veristand, I created a workspace file to test the accelerometers and I the acquisition of data created in the system Explorer. After the deployment of the system definition and running workspace, I created three simple graphics and connected ways appropriate to each curve. I reduced tensions in the same way exactly, I put on the scale the to the MAX, but for some reason, one of the accelerometers gives tensions that are far away from where they should be. The other two accelerometers work perfectly and one that does not works perfectly in MAX. So I don't think that there is a problem with the accelerometer, it just would not work in Veristand for some reason any. I wonder if there is someone who can at least have an idea of why something like this could happen. I have all three accelerometers that are related to the same connector block and I wonder if put too much in a block would do something like that.

  Any help would be appreciated.

  Thank you

  For all those who can do I understand what the problem is. The default setting in Veristand read channels of differential measures, so anything connected to channels 8 or below is mapped to both channels, (e) and has (n + 8), where n is the number of the channel. For me to use the accelerometers in the way I set up the I just need to go to unique benchmark measures ended (CSR) in the system Explorer.

  Once again thanks for your help.

• PID regulator takes advantage of the transfer function of the model sys

  Hello

  I need to find a controller for my system...

  I have my system as transfer function model and I want to find the pid of the gains of this system by using its transfer function!

  All block in labview 8.5 to do this step?

  Concerning

  Hello

  Maybe this link will come close to the feature you're looking for:

  Analytical design of PID VI

  http://zone.NI.com/reference/en-XX/help/371894E-01/lvctrldsgn/cd_pid_design_pal/

  This function was introduced in LabVIEW 8.5 in the Control Design and Simulation Module. There is a limitation, because this process analysis based on one or more transfer SISO (single Input Single Output) functions. The help article above comes from aid in 2010. Below, I've included the 8.5 reference:

• filterinmg RF analog signals

  I am writing the control software for a system that uses RF (clocked at 72 MHz) as a major component. None of our signals have harwdare filters and software I am sampling 100 samples at 1 k Hz. I have on average these samples and update every 250ms.

  Using a language I can understand, can someone help me understand how RF may influence our signals and what options I have to filter this noise (harwdare and software). Or at least point me to a good resource.

  Doug,

  Here's the ME version of RF interference.  The combination of transmitter/antenna radio creates electromagnetic waves in the space around the antenna.  Think of dropping a stone in a pool of water.  The wave analogy is reasonable for the basic understanding. A leaf floating on the pond goes up and down with the wave.  If you put a float on the water and connect to the Mainland by a gearbox, you can extract energy from the waves.

  In your DAQ system two things are necessary to produce interference. 1. the RF wave must be coupled to the system. 2. the RF energy must reach a point where a non-linear device converts the sine waves of very high frequency in a form which allows to measure the low frequency DAQ system. (2.a. There are a more complicated way interference can occur without a nonlinearity - subsampling).

  How the coupling can occur? The wavelength of an electromagnetic signal in free space is the speed of light, divided by the frequency.  For 72 MHz the wavelength is 4.17 m.  A wavelength of antenna 1/4 long can couple to electromagnetic waves very effectively.  Y at - it wire in your system about 1 meter long?  USB cable? It is likely that you have some very nice antennas.  If the voltage from one of these antennas reached about 0.5 V, it will be sufficient to cause the internal diode junctions in any device of semiconductor (such as amplifiers, analog/digital converters and multiplexers) of lead.  This conduction is non-linear and produce a DC voltage out to the RF input.  This tension Gets the sum (with unknown polarity) with the signals you want to measure, prodcuing errors.

  What can you do about it?  Disable the transmitter will not solve the problem, but because it is needed for other purposes, is not an option.  The signals of interest being very low frequencies, it should be fairly easy to eliminate parasites.  Three general principles apply.  First is to eliminate the source, which has already been ruled out.  However, check if the transmitter power can be reduced without compromising the performance of the RF System. Second is to reduce the coupling.  If possible, keep the transmitting antenna as much as possible to the source of your slow signals and threads of connection to your data acquisition system. The orientation of the antenna and son can help too.  There are too many combinations to try even give general guidelines on this without more information on the physical configuration of your system.  Armor is a big part of the principle of coupling reduction and works well at 72 MHz.  All the sons of your signal sources for the acquisition of data and data acquisition to the computer must be shielded. Should be based on the shields.  Just make sure that you don't create ground loops in the process that can lead to other problems.  Connect everything to a pattern with a 'star' grounded to System.  The third principle is to reduce the signals interfere by filtering. I would try to put a ceramic capacitor of 100 nF for each signal line to the mass input on the DAQ hardware, keeping the capacitor leads as short as possible.  If your sources of signals have a very high impedance or inductive, you might have an EE assess suitable filtering.  The benefits of the capacitors are: cheap!, simple to install, will reduce RF interference over a wide bandwidth, require no development and are generally quite effective.

  The problems are depending on the severity, it can be quite simple eliminate your interference or it might require a major overhaul of the entire system.

  Lynn

  ADDRA Consulting, LLC

• GPIB write error code 6, how to make good waiting in comm GPIB

  Hello!

  I use a MUX Keithley and a digital Voltmeter to measure different values in my system, including the resistance of the wire 4. My project runs for several hours without any problem, but last night I got an error after about 8 hours DURATION. My mistake in the main vi shows the following error:

  GPIB Write in A_4Wire_resMUX_2!1,2!3,2!5_new.vi Error code 6.
  

  I have attached this Subvi, as you can see, I put a while loop in the Subvi to give enough time to measure 4 son to do. But of course maybe another function GPIB write hangs in the Subvi, not that after the while loop.

  I have 2 questions:

  1. What is the best way to make the error handling in comm GPIB, so I could see on my final mistake on what caused the problem in this certain sub - VI?

  2. can someone show me what I could do better in this sub - VI, in order to avoid possible errors of GPIB?

  Its just guessing, but I think the error comes from that I can't give enough time to the GPIB device to perform an action, then the next writing of GPIB breaks down?

  more information: Windows XP, LabView 2010 full version

  Thanks much for the advice and help!

  2001 pilot

  7001 driver

  Now that you have a modern version of LabVIEW why are you not taking advantage of the instrument driver network?  VISA is beautiful and 488,2 gross primitives should consider as "obsolete".

  Since you did not use the specific instrument driver vi we cannot say that write on this device generates the error that you are experiencing.

  So to specifically answer to Q1.  Use the driver found on the instrument driver network - they are tested and structured in a way to help debug your application and to take advantage of the powerful features of VISA...

  And (2) (see #1) and change the sequence stacked in a state machine

• driver hp871xb

  Hi all

  I do measure using LabVIEW 7.1 Automation to control the measure on the HP8714C Network Analyzer. I use hp871xb driver. I tried to do a vi that I joined and it runs without error. I could see the wave form and save it as .txt file. But I still have a problem on how to configure the settings of the measured channel (mag, newspaper, etc.) using this driver. In HP8714C, there are the 'format' button that allows to choose the parameters of the measurement chain.

  I think I should find that the vi for those 'format' button and I could put in my vi that I have attached, can be between configure Scale.vi and read Wafeform.vi.

  I need an idea to solve this problem. Thank you

  I didn't try the command (we do not 8714C VNA) but the code you posted, I see some errors. The first is a syntax error, there should not be a ': ' between the SHAPE and MLOG, simply put a space. The second is for the selection of channels, the CALC1 command is used for channel 1 and you use Calc2 of channel 2. Also, in the case of false to substitute the value of phase MLOG (you will find this value in the programming manual). Another, do not use the value of the format function in the structure of the case, it adds the channel at the end of the string number (1 or 2 must be after CALC without spaces, for example CALC1 or CALC2)

  Ben

• device is simulated

  Hiya,

  I'm learning to build vi without physical connection. I have created peripheral pc16220 simulated able and Explorer. I tested the signal is a white noise. I went back to labview and code examples to locate the acq & chart - int.vi and voltage parameters inserted in the control of the physical channel and ran the vi. I got the sine wave.

  I want to check if the device is simulated and cannot locate the deviceissimulated palette and do not know how to perform this action. A tutorial in zone.ni.com give following information but I have not found the route function > measure or...

  
  ( zone.ni.com to discover during the execution of a program if a device is simulated, use the DeviceIsSimulated property on the property OR DAQmx Device node. Open the functions > NOR measures > DAQmx > DAQmx advanced > DAQmx System Setup subpalette find this property node. The property returns true if the device is simulated.

  You can rephrase your message more clear to understand what are your questions?  You posted an image that does not exist.  It presents itself as a red X image.

  I found the property node DeviceIsSimulated by following the path down the palettes you have posted.

  I think you have to say you faked a PCI-6220.  I don't know how you "test signal is white noise.

  You can expect a different waveform when you change the channel of the simulated device?  When you simulate a device, you will always get a sinusoid signal.

  If you can specify clearly what you're trying to do, how it does not work, and where you have a problem and ask a question, then it will be possible to help you.

• PIC of noise between two materials DAQ

  I have two data acquisition systems a number of measuring channels. The idling system is using two chassis SCXI and digitisation about 128 channels at 200 Hz. The low speed of computer uses a PCI - 6259 MIO.

  8 eight channels are te would be on their way to a data acquisition hardware high speed at 8000 Hz. On the high speed computer, there's a spike of discerete to 5ms (corresponding to 200 Hz). High speed computer is a card PCI-6133 S-series (measurement of the differential mode).

  When I change the low speed at 100 Hz scanning speed, the tip on broadband computer is 10 MS (corresponding to 100 Hz).

  My question is if all digital lines controlling the SCXI chassis produce this spike that is being picked up by the high speed Board.

  Both DAQ cards are installed on two different computers and are not connected in anyway except for the analog voltage signals 8 eight Tee would have turned off and connected.

  Any ideas to solve this problem would be appreciated.

  Thank you

  Kind regards

  Sudarshan.

  561-714-1641.

  This would have many things, but my first guess would be the ground loop. Are the computer connected to two different cards? If so, this can cause a ground loop. After that, it could be many other things.

  Shielding

  losing connections

  interference

  etc...