Cdaq9172 random disconnect

We have a Cdaq9172 unit connected via USB to the PC running Labview V8.5.  Currently connected via a 5 m USB extension cable to PC.  
Problem.  The daq unit looses the connection to the PC at random intervals.  To fix we need to remove USB cable and plug back into PC.  The problem can be once a week, once a day or several times an hour.
The environment is a sawmill, but the PC and CDaq unit is in a computer room.  We have had this problem both with Windows XP and a new Windows 7 64 bit PC
On the old PC we often had to reboot the PC to reestablish connection so I assumed the USB control on the PC was the problem while with the new PC we just needs to unplug/plug in the USB cable.
Any suggestions? 

I got one.  The USB cable that comes with the cDAQ chassis has magnets on the ends to help with noise.  Once someone grabbed just a normal USB cable instead of the one that came with the chassis.  It would work in a noisy environment most of the time, but it would also disconnect once in a while.
At the time we didn't have much time to debug, so we bought a cDAQ ethernet chassis instead and had no issues with it.
Unofficial Forum Rules and Guidelines - Hooovahh - LabVIEW Overlord
If 10 out of 10 experts in any field say something is bad, you should probably take their opinion seriously.

Similar Messages

  • My phone will randomly disconnect from the wifi and when I retype the password it says it is wrong. It will eventually work but I have to wait for a message to pop up on my screen to allow me to retype the wifi password.

    When I first got my phone it worked perfectly fine with the wifi. Although later on I began to have problems connecting it. It will randomly disconnect from the wifi and when I try to retype the password it tells me it is wrong, although it is right. It will eventually work but in its own time, a message will pop up and allow me to type in the password and it will work. But sometimes it takes an hour or more and sometime it takes 10 minutes. I've seen where other people have had this problem but I don't know how to fix it. I'm not sure if it's an issue with my phone or if it's with my wifi. Does anyone know how to fix this?

    Does this happen with all Wi-Fi hotspots?  A specific one?
    Have you tried forgetting the Wi-Fi connection and then reconnecting to it?
    What about power cycling the Wi-Fi router?

  • Undocumented 'random disconnection' from manually connected wireless

    I have got a USB-N13 wireless-N300 dongle.
    According to 'lspci -k' I have the drivers, and I have a wireless interface. So I know that my dongle has drivers but I don't know if they work 100% well.
    I will show the output of various normal commands:
    $ iw dev wlp5s0u1 link
    Connected to <mac address> (on wlp5s0u1)
    SSID: <ssid>
    freq: 2437
    RX: 19939057 bytes (111695 packets)
    TX: 319269 bytes (2813 packets)
    signal: -50 dBm
    tx bitrate: 7.2 MBit/s MCS 0 short GI
    bss flags: short-slot-time
    dtim period: 0
    beacon int: 100
    $ ip link show wlp5s0u1
    3: wlp5s0u1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DORMANT group default qlen 1000
    link/ether d8:50:e6:f4:33:24 brd ff:ff:ff:ff:ff:ff
    $ dmesg -w
    [ 6.634808] r8169 0000:04:00.0 enp4s0: link down
    [ 6.634847] IPv6: ADDRCONF(NETDEV_UP): enp4s0: link is not ready
    [ 6.636405] rtl8192cu: MAC auto ON okay!
    [ 6.648784] rtl8192cu: Tx queue select: 0x05
    [ 7.006529] IPv6: ADDRCONF(NETDEV_UP): wlp5s0u1: link is not ready
    [ 8.751113] wlp5s0u1: authenticate with <mac address>
    [ 8.774294] wlp5s0u1: send auth to <mac address> (try 1/3)
    [ 8.792882] wlp5s0u1: authenticated
    [ 8.794125] wlp5s0u1: associate with <mac address> (try 1/3)
    [ 8.815636] wlp5s0u1: RX AssocResp from <mac address> (capab=0x411 status=0 aid=4)
    [ 8.815672] wlp5s0u1: associated
    [ 8.815712] IPv6: ADDRCONF(NETDEV_CHANGE): wlp5s0u1: link becomes ready
    [ 265.580381] type=1006 audit(1394469140.822:2): pid=253 uid=0 old auid=4294967295 new auid=1000 old ses=4294967295 new ses=1 res=1
    [ 265.639231] type=1006 audit(1394469140.882:3): pid=495 uid=0 old auid=4294967295 new auid=1000 old ses=4294967295 new ses=2 res=1
    [ 272.723778] fuse init (API version 7.22)
    [ 291.938590] ISO 9660 Extensions: Microsoft Joliet Level 3
    [ 291.981059] ISOFS: changing to secondary root
    [ 385.885587] hda-intel 0000:00:1b.0: Unstable LPIB (130824 >= 8192); disabling LPIB delay counting
    [ 423.970540] r8169 0000:04:00.0 enp4s0: link up
    [ 423.970548] IPv6: ADDRCONF(NETDEV_CHANGE): enp4s0: link becomes ready
    This is all the information from when I fist see an wireless interface.
    All, I can tell is that my wlp5s0u1 doesn't go down, but a few seconds before I plug in my wireless bridge, or enp4s0, my 'Internet stops...' Or I can't search google, and my youtube stops streaming, conky says that about 30bytes get transfered from that point on, and there is no errors?!
    I'm not on a laptop, and my device's power saver is set to off. And as I'm not getting the second error I don't know how to fix this.
    $ iw dev wlp5s0u1 get power_save
    Power save: off
    (Sorry if this is blatantly obvious, I've only had arch for under a month, with no prior Linux experience, and my dad can't help me with it too!)
    EDIT:
    Please can someone please tell me something that I can try or look into to resolve this, I have a useless dongle now, and an Internet connection that drops at least 50% of the packets.
    Last edited by Peilonrayz (2014-03-12 17:18:43)

    Unfortunately, join the crowd ....
    Wifi connection bad since upgrade to 10.4.10 (SAME PROBLEM IS IN 10.5)
    http://discussions.apple.com/thread.jspa?threadID=1008143&tstart=0&start=0
    Intermittent WIFI with Leopard on Macbook
    http://discussions.apple.com/thread.jspa?threadID=1231631&tstart=0
    New MacBook Pro & Leopard - Airport Connection problems
    http://discussions.apple.com/thread.jspa?threadID=1200966&tstart=0&start=0
    Airport random disconnect
    http://discussions.apple.com/thread.jspa?threadID=970070&tstart=15&start=0
    ... that's a couple of the major threads about this issue, that has been going on since June.

  • Random Disconnection From My Wireless Access Point

    I got my MacBook a few weeks ago, wand I'm loving it... for the most part.
    Info: I've been using my Linksys WRT54G router for years. I've never had a problem. I currently have a desktop Mac connected to it along with my MacBook, and the connection on the Mac is fine.
    *The problem:* My MacBook doesn't hold a steady connection to my router, even when I'm just mere feet away.
    *What happens:* I have a very strong connection on my WiFi with the built-in AirPort. Then, a few seconds later, all of the 4 bars drop to 0 for a few seconds, jump back to 4, go back down to 0... you get the picture. I find this frustrating, as the internet may shut down for a minute at a time, regain connection for a few seconds, and then lose connection after about 10 seconds. I am unable to use iChat (it shuts down whenever I lose connection), or easily browse the internet.
    *I know it's not the router. My desktop Mac connects with ease. Should I take my MacBook to a Genius Bar?*
    Message was edited by: Pickleman

    Unfortunately, join the crowd ....
    Wifi connection bad since upgrade to 10.4.10 (SAME PROBLEM IS IN 10.5)
    http://discussions.apple.com/thread.jspa?threadID=1008143&tstart=0&start=0
    Intermittent WIFI with Leopard on Macbook
    http://discussions.apple.com/thread.jspa?threadID=1231631&tstart=0
    New MacBook Pro & Leopard - Airport Connection problems
    http://discussions.apple.com/thread.jspa?threadID=1200966&tstart=0&start=0
    Airport random disconnect
    http://discussions.apple.com/thread.jspa?threadID=970070&tstart=15&start=0
    ... that's a couple of the major threads about this issue, that has been going on since June.

  • IPod Classic Randomly Disconnects from Car Stereo

    I have a 160GB iPod Classic that is hooked up to my car stereo. Previously it was connected to a 2012 Kia Sorento SX and it would just randomly disconnect from the stereo and freeze. The only way to get it back was to do a hard reset (menu/select button held down), then start playing a song, and then connecting to the stereo. It didn't happen frequently, but maybe once or twice a month.  Annoying.  But I thought it had to do with the way Kia implemented the connection to the iPpd.
    I just recently acquired a 2014 Acura MDX and I've already had that same annoying problem twice in 2 days. So now I'm starting to think maybe it's the iPod.
    In the past, I've done a full restore, repaired the drive, etc. Nothing seemed to help.
    Any ideas?  Thanks!!

    Sometimes this works. Otherwise you will have to wait for an updte to the car system or the iOS on the iPod
    - Reset the iOS device. Nothing will be lost
    Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
    least ten seconds, until the Apple logo appears.
    - Reset the car system
    - Reset all settings      
    Go to Settings > General > Reset and tap Reset All Settings.
    All your preferences and settings are reset. Information (such as contacts and calendars) and media (such as songs and videos) aren’t affected.
    - Restore from backup. See:                                 
    iOS: How to back up                                                                
      - Restore to factory settings/new iOS device.

  • Network drives randomly disconnecting, unable to reconnect

    I have been having an issue with network drives randomly disconnecting. When I try and reconnect using the Connect to Server dialog, the share is greyed out. My current workaround has been to open up terminal and run umount /Volume/Share_Name, and I am able to connect again afterwards. This is happening multiple times a day, and across multiple servers. I have poked around the forums and seen some people with similar issues, but the solution of connecting with cifs:// instead of smb:// has not made any difference.

    which ultimately means apple didn't do enough testing before releasing the last patch
    This is not always, and may not be, the case. What many don't realise is that many 3rd party developers stray from the 802.11 series specifications in an attampt to boost speed and get one up on their competitors. For instance D-Link, amongst others, use a short preamble setting by default in some of their routers to improve performance. However, this is non-standard and when it comes across wireless network adapters that don't support this then you have problems. They assume that their network adapters are being used for "maximum speed and compatibility". Whether Apple should or should not support a short preamble is another subject altogether.
    However, I do agree with you in that Apple should put more work into their Airport software.

  • Wifi randomly disconnects from my macbook pro running 10.9.2.

    Wifi randomly disconnects from my macbook pro running 10.9.2.  Rebooting is necessary to regain the wifi connection.  The wifi power indicator indicates a full connection, but the card sees no wifi networks. I have renamed the location, deleted and reinstalled the wifi interface, moved the wifi inerface to the top, and reset the DNS.  This problem is continual and occurs with all wifi spots.   Please help.

    It seems that the wifi on the computer shuts off and will not turn on until the computer has been rebooted.  Can someone poease help?

  • CUCM Random disconnect errors

    I have a client who is getting random disconnect errors from his cucm servers.  They seem to encompass other network errors at times as well, but not always.  I'm having a hard time telling if its cucm or if it is a network issue in general.
    I pulled his core logs and at the time of disconnect messages from RTMT I'm seeing this:
    |StationInit:   TCPPid = [1.100.9.58957]Socket Broken. DeviceName=SEP002584189723,IPAddr=10.100.7.49, Port=0xc702, Device Controller=[1,51,5397]|1,100,50,1.20646898^10.100.7.49^SEP002584189723
    11:35:48.006 |StationInit:   TCPPid = [1.100.9.58948]Socket Broken. DeviceName=,IPAddr=10.101.1.42, Port=0xcbf2, Device Controller=[0,0,0]|1,100,55,3.1^*^*
    11:35:48.050 |StationInit:   TCPPid = [1.100.9.58250]Socket Broken. DeviceName=,IPAddr=10.101.1.112, Port=0xc436, Device Controller=[0,0,0]|1,100,55,3.1^*^*
    11:35:48.067 |StationInit:   TCPPid = [1.100.9.59376]Socket Broken. DeviceName=,IPAddr=10.101.1.16, Port=0xc55e, Device Controller=[0,0,0]|1,100,55,3.1^*^*
    11:35:48.099 |StationInit:   TCPPid = [1.100.9.58840]Socket Broken. DeviceName=,IPAddr=10.101.1.8, Port=0xc577, Device Controller=[0,0,0]|1,100,55,3.1^*^*
    The Cisco UP Presence Engine service on the peer node of a subcluster has failed AppID : Cisco Syslog Agent ClusterID :
    |StationInit:   TCPPid = [1.100.9.58957]Socket Broken. DeviceName=SEP002584189723,IPAddr=10.100.7.49, Port=0xc702, Device Controller=[1,51,5397]|1,100,50,1.20646898^10.100.7.49^SEP002584189723
    11:35:48.006 |StationInit:   TCPPid = [1.100.9.58948]Socket Broken. DeviceName=,IPAddr=10.101.1.42, Port=0xcbf2, Device Controller=[0,0,0]|1,100,55,3.1^*^*
    11:35:48.050 |StationInit:   TCPPid = [1.100.9.58250]Socket Broken. DeviceName=,IPAddr=10.101.1.112, Port=0xc436, Device Controller=[0,0,0]|1,100,55,3.1^*^*
    11:35:48.067 |StationInit:   TCPPid = [1.100.9.59376]Socket Broken. DeviceName=,IPAddr=10.101.1.16, Port=0xc55e, Device Controller=[0,0,0]|1,100,55,3.1^*^*
    11:35:48.099 |StationInit:   TCPPid = [1.100.9.58840]Socket Broken. DeviceName=,IPAddr=10.101.1.8, Port=0xc577, Device Controller=[0,0,0]|1,100,55,3.1^*^*
    and lots of them, for a few minutes and then it stops.  When I search around for solutions for this I see "contact TAC" repeatedly.  Can anyone help me determine if I have a cm problem or a network problem.  He did reboot the cluster 12 days ago and it didn't stop the problems.  The disconnect errors related to all components of the phone system (cucm, cuc, uccx, cups) and have been anything from "SDL link to remote application is out of service", "OUT-OF-SERVICE AppID : Cisco UP Presence Engine ClusterID", "
    The Cisco UP Presence Engine service on the peer node of a subcluster has failed AppID : Cisco Syslog Agent ClusterID", "user 2 ntpRunningStatus.sh: Primary node NTP server, SVUCCX01, is currently inaccessible or down"
    So its just like all communication breaks and then comes back again.  I'd like to do as much leanring as possilble with this and not just run to TAC.  Any suggestions?

    Hi Dustin,
    Please see the explaination for the error you are getting:-
    CCM_CALLMANAGER-CALLMANAGER-1-SDLLinkOOS : SDL link to remote application is out of service  Remote Application IP Address [String] Unique Link ID [String] Local Node ID [UInt] Local Application ID [Enum]Remote Node ID [UInt] Remote Application ID [Enum]
    Explanation   This alarm indicates that the local Unified CM has lost communication with the remote Unified CM. This alarm usually indicates that a node has gone out of service (whether intentionally for maintenance or to install a new load for example; or unintentionally due to a service failure or connectivity failure).
    Recommended Action   In the Cisco Unified Reporting tool, run a CM Cluster Overview report and check to see if all servers can communicate with the Publisher. Also check for any alarms that might have indicated a CallManager failure and take appropriate action for the indicated failure. If the node was taken out of service intentionally, bring the node back into service.
    Reason Code - Enum Definitions
    Enum Definitions - LocalApplicationID
    Value
    Definition
    100
    CallManager
    Enum Definitions - RemoteApplicationID
    Value
    Definition
    100
    CallManager
    The most common Lost communication for CallManagers could be Callmanager server hang, network problems or high CPU
    You can use RTMT to monitor this.
    CM servers keep a TCP connection to other servers in the cluster. When that TCP connection is broken due to network connectivity or lack of server resources, the above error is generated.
    Also the sdi traces you have provided won't be useful to analyze the problem but rather please take detailed sdl traces.
    If possible then take SDL detailed traces with sniffer filtering TCP port 8002 in order to find out if this is a Network problem or not.
    Sometimes due to highly fragmented disk can cause heavy disk I/O utilizing all the CPU.
    Was there any upgradation or migration activity was carried out in network?
    Please check the server NIC and switch NIC or other NIC have the same speed/duplex settings.
    Regards,
    Nishant Savalia

  • Wrt600n / wpc600n random disconnect issues

    hi,
    i've been running the new AP / cards for a few weeks now, and am seeing some weird behavior on them.
    when connected to the AP using either vista (using windows to manage wireless setting), or in xp (using the linksys utility), i'm getting random disconnects. the wireless connection will just drop from 1-10 seconds, then reconnect on it's own.
    for these connections, i am forcing the AP and cards to use the n band.
    the AP is set to N mode only, and all other settings on the AP are set to Auto. the clients are using all default settings as well, and this issues occurs during web surfing, email, etc. and is repeatable.
    any suggestions?
    Message Edited by d-rick on 01-20-2008 09:50 AM

    r u using the linksys adaptor on vista or on xp
    if ur using it on vista
    please download the drivers for vista from
    www.linksys.com/vista
    live life king size

  • ESATA HDD Random Disconnect SOLVED!!!

    Fellow ThinkPad owners:
    I've spent the greater part of the past two days trying to resolve the issue of my eSATA connected ThinkPad 500GB SHDD's tendency to randomly disconnect itself. I had just gotten my new W520 with Windows 7 64bit preinstalled, and was happily working away (I'm a banking applications developer) when out of the blue I would get a ThinkVantage message asking me to recover my current files to the C:\ drive. To my surprise and dismay, I noticed that this was occurring immediately after my HDD had "dropped" off MyComputer's list of available drives! I spent all day on the phone with Lenovo tech support to no avail. I did notice, however, that opening the ThinkVantage ToolBox (PC Doctor application) was a surefire way to cause the HDD to "drop" off immediately.
    SOLUTION:
    Uninstall ThinkVantage Toolbox! 
    The problem has now ceased, and I've also noticed that the fan in the W520 is not nearly as overactive as it had been while the ToolBox was running in the background. 
    Come on Lenovo, don't saddle us with additional bloat that actually impedes proper function of the **bleep** hardware!
    And to PC Doctor, I suggest heeding the Hippocratic Oath: "FIRST, DO NO HARM"!!!! 
    Danny

    Thanks for posting your fix...
    I agree, ThinkVantage Toolbox has gotten pretty invasive as of late. It has also become less useful, although you can install custom add-on modules to make it better.  Anyway, it is possible to keep the program installed w/o having all the background tasks.  This leaves the Blue ThinkVantage button active.
    Install TVT
    Launch TVT, Settings, then untick "Enable Quick Hardware Check", Save
    right click on task bar and uncheck TVT
    run taskmgr.exe
    Disable PCDEventLauncher, PCDoctorBackgroundMonitorTask, and SystemToolsDailyTest
    PCDEventLauncher will most likely be recreated if/when you next run TVT- but it is of little conequence.
    Also, are you are using AHCI?  It is required for eSATA hot plug (+ some other features).  We have had systems that refuse to keep a eSATA drive connected when running in compatible mode.

  • CUPC random disconnect

    Hi,
    I have a few people who have been saying that their CUPC client randomly disconnects and they can't reconnect for a long time, even through reboots.  I have a feeling that it's somehow an LDAP timeout, but I don't know.  Regular ethernet and phone connectivity remains normal.  I have attached the problem report from one of the people.  Can anyone decipher what might be happening?

    Do you happen to have a timestamp when you saw this issue?  There are quite a few log files in here.
    --Matt

  • After updating 8.1 , wifi still randomly disconnect sometimes. It never happened to me when i had iphone 4. That's really hard to accept.

    After updating 8.1 , wifi still randomly disconnect sometimes. It never happened to me when i had iphone 4. That's really hard to accept.
    Is it worth 900 dollars for a smartphone that has so many issues ? After 3 updates? After 1 month? I wasted 2 gb of mobile internet cause of ios 8.
    And battery is terrible.

    same here, iphone 6 plus 64 gb.
    additionally in 5 ghz networks the wifi connection is very slow or  there is no data transfer possible ( the wifi icon is already there and in a good status) other devices hasn't any problems in that network

  • The Wi-Fi randomly disconnects, and now it is not even available as an option in the "Network Preferences" area.

    After having the MacBook Pro for about 1.5 years, the Wi-Fi randomly disconnected. Ethernet works fine, however, whenever I tried clicking "Turn Wi-Fi On", nothing happens. I have tried a SMC reset, resetting the PRAM (resetting the PRAM worked for a bit and then suddenly it didn't), and shutting down/restarting the laptop multiple times. Often times does the Wi-Fi turn back on, however it immediately disconnects after about a minute. Now I have come to a point where, in the Network Preferences area, the Wi-Fi option is not available on the list that is on the left side of the preferences. A PRAM reset solved this case, but for some reason it doesn't work anymore. I took it into a local Mac store, where they said that they would need to check if it was the Wi-Fi card that was causing the problem and would need to charge me $50 for the tech service to check it out (which is obviously what I would not do...at least if there is some way to go around this). Help.
    ~TheIvyX

    I am also suspicious that your WiFi card may have a probelm.
    Do an SMC Reset before you do anything else.
    Intel-based Macs: Resetting the System Management Controller (SMC)
    An appointment at the genius Bar at an Apple store is FREE, in warranty or out.
    Apple only charges for services when parts are needed, and then it is a flat rate for the repair, no diagnosis fees and no surprises.

  • Network Adapter randomly disconnects

    I have a Thinkpad T60p with a 3945abg network adapter. The adapter works fine when I'm connected to a non-secured router, but randomly disconnects when connected to a WPA-2 protected router. Is there an updated driver to prevent this from happening. Thanks in advance for any suggestions. rjoeng1

    Yes, it is normal. A lot of times, routers security is not compatible with wireless card. You have to keep changing setttings in router firmware until you find the best settings. Good luck.
    Rafiq
    Microsoft and Apple certified professional.

  • Mountain lion randomly disconnect wireless

    I have 2011 iMac bought in Nov 2011 and upgraded to Mountain Lion. Now wirless is randomly disconnected all the time. What should I do and how to fix it?

    Hi, this has worked for a few...
    Make a New Location, Using network locations in Mac OS X ...
    http://support.apple.com/kb/HT2712
    old... http://docs.info.apple.com/article.html?artnum=106653
    Hi, this has worked for a few...
    Make a New Location, Using network locations in Mac OS X ...
    http://support.apple.com/kb/HT2712
    10.7…
    System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.
    10.5.x/10.6.x/10.7.x instructions...
    System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.
    The interface that connects to the Internet should be dragged to the top of the list.
    Instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.
    For 10.5/10.6, System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...
    208.67.222.222
    208.67.220.220
    Click OK.
    Also, turn off IPv6:
    System Preferences » Network » AirPort » TCP/IP tab » Configure IPv6
    Or whatever Interface you use.

Maybe you are looking for