IMAQdx with JAI and a hardware trigger

Hello,
We are working with two 'JAI AD-080' cameras and IMAQdx, and have two problems regarding the triggering and frame grabbing:
1) We are unable to change the trigger source through IMAQdx property node or the Vision Acquisition Express; Vision Acquisition block.
2) When we manually edit the trigger source property using the NI Measurement and Automation Explorer (MAX) to its correct value, we can't get all four of the CCD's to run at a time without resulting in bad packets, e.g. horizontal black lines across the images.
Our goal is to obtain the images from the 4 CCD's at a rate of 5 Hz using our hardware trigger. We can already connect and obtain all four images at full speed, but the 5 Hz trigger is not being used by the cameras in that case.
Details of the setup:
NI 2011, Windows 7
Two (2) JAI AD-080 cameras (with 2 CCD's each), GigE cameras connected over Ethernet
Hardware triggering at 5 Hz, on pin: 'Line 7 - TTL In 1'
Details of the problem:
(1)  Setting the trigger source not possible in Vision Express or IMAQdx property node
In order to use our hardware trigger, we have to set the camera property 'CameraAttributes::AcquisitionControl::TriggerSource' to a specific pin (Line 7 - TTL In 1). This property is available in MAX, but is not usable in the Vision Express Block. The property is present, but the values are invalid. Here is what I think is happening: the list of properties are read from the camera, but LabVIEW does not know what the valid values are for that property and it populates the value drop-down menu with whatever was loaded last. This can be seen in figures 1 and 2 where the values in the drop down menu change.
Similarly, this property of 'Trigger Source' cannot be changed programmatically using the IMAQdx property node shown here: http://digital.ni.com/public.nsf/allkb/E50864BB41B54D1E8625730100535E88
I have tried all numeric values from 0 to 255, and most give me a value out of range error, but the ones that do work result in no change to the camera.
(2)  Lost packets in image during triggering
If I set the 'Trigger Source' property in MAX to the correct pin, save the configuration, and then use the Vision Acquisition Express block to connect to the camera, the triggering works properly (the hardware trigger is used and the images are received by LabVIEW at 5 Hz). However, this only works for one CCD: If i use the same code for all four CCD's at the same time, I get black bars on the images, and at least one of the CCD's result in an error in 'IMAQdx Get Image.vi' (code -1074360308, -1074360316)
I tested this by using the configuration attributes created by the Vision Express Block, (The string used in the 'IMAQdx Read Attributes From String.vi'), in the code we have been developing as well as a very simplified version which I have attached. Those configuration attributes are saved in the text files:  JAI_Config_TrigON.txt and JAI_Config_TrigOFF.txt for using triggering or not respectively.
So my final questions are:
Is there a problem with the IMAQdx because it doesn't recognize the trigger source value?
Do you have any suggestions for why there are bad packets and trouble connecting to the cameras when I load them with the trigger on attributes?
Thank you for your time -
Attachments:
Fig1_VisionAcq.png ‏387 KB
Fig2_VisionAcq.png ‏442 KB
Fig3_BadPackets.png ‏501 KB

Hello,
Thank you for your response; especially the speed in which you responded and the level of detail.
I have not solved the problem fully in LabVIEW yet, but I was able remove the black lines and apparitions from the images using different camera parameters.
Since this was a significant victory I wanted to update:
1) Version of IMAQdx?
I have IMAQdx 4.0, but the problem persists.
2) Setting configuration files
Your suggestion to pay attention to the order in which the properties are set as well as using the MAX settings is very helpful. I have not explored this feature fully, but I was able to successfully use MAX to set the default settings and then open the cameras programmatically without loading a new configuration file.
3) Bandwidth limitations
I modified the CCD's to only use 250 Mbits/second, but the lost packets (or missing lines/ apparitions) were still present.
4) JAI AD-080GE Specifics
I am using the JAI AD-080GE; and there are two settings for this camera that I want to mention:
JAI Acquisition Control>> Exposure Mode (JAI)>>Edge pre-select
JAI Acquisition Control>> Exposure Mode (JAI)>>Delayed readout EPS trigger
The "Edge pre-select" mode uses an external trigger to initiate the capture, and then the video signal is read out when the image is done being exposed.
The "Delayed readout EPS trigger" can delay the transmission of a captured image in relation to the frame start. It is recommended by JAI to prevent network congestion if there are several cameras triggered simultaneously on the same GigE interface. The frame starts when the 'trigger 0' is pulsed, then stored on the camera, then is transmitted on 'trigger 1'.
The default selection is the "Delayed readout EPS trigger", however, I do not know how to set the 'trigger 1' properly yet and I only have one connection available on my embedded board that is handling the triggering right now (I don't know if 'trigger 1' needs to be on a separate line or not). Incidentally, the system does not work on this setting and gives me the black lines (aka lost packets/ apparitions).
I was able remove the black lines and apparitions using the "Edge pre-select" option on all 4 images with a 5 Hz simultaneous trigger. I confirmed this using the "JAI Control Tool" that ships with the cameras. I am unable to make this happen in MAX though, as the trigger mode is automatically switched to 'off' if I use the mode: JAI Acquisition Control>> Exposure Mode (JAI)>>Edge pre-select
i.e. when manually switching the trigger mode to 'on' in MAX, "JAI Acquisition Control>> Exposure Mode (JAI)>>Delayed readout EPS trigger" option is forced by MAX. The vise-versa is also forced so that if EPS mode is chosen, "Trigger Mode Off" is forced.
Additionally, there is a setting called:
Image Format Control>>Sync Mode>>Sync & Image Format Control>>Sync Mode>>Async
When the "Sync" option is chosen the NIR CCD uses the trigger of the VIS CCD. In addition to using the "Edge pre-select" option, the "Sync" option improves the triggering results significantly.
5) Future troubleshooting
Since I cannot set the camera parameters manually in MAX (due to MAX forcing different combinations of parameters in 4), I am going to explore manually editing the configuration file and loading those parameters at startup. This can be tricky since a bad combination will stall the camera, but I can verify the settings in JAI Control Tool first. There is also an SDK that is shipped with the cameras, so I may be able to use those commands. I haven't learned C/C++ yet, but I have teammates who have.

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# This is an example of a DHCP range with a network-id, so that
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#dhcp-range=red,192.168.0.50,192.168.0.150
# Supply parameters for specified hosts using DHCP. There are lots
# of valid alternatives, so we will give examples of each. Note that
# IP addresses DO NOT have to be in the range given above, they just
# need to be on the same network. The order of the parameters in these
# do not matter, it's permissble to give name,adddress and MAC in any order
# Always allocate the host with ethernet address 11:22:33:44:55:66
# The IP address 192.168.0.60
dhcp-host=00:E0:B8:9C:B7:2C,192.168.20.1
# Always set the name of the host with hardware address
# 11:22:33:44:55:66 to be "fred"
#dhcp-host=11:22:33:44:55:66,fred
# Always give the host with ethernet address 11:22:33:44:55:66
# the name fred and IP address 192.168.0.60 and lease time 45 minutes
#dhcp-host=11:22:33:44:55:66,fred,192.168.0.60,45m
# Give a host with ethernet address 11:22:33:44:55:66 or
# 12:34:56:78:90:12 the IP address 192.168.0.60. Dnsmasq will assume
# that these two ethernet interfaces will never be in use at the same
# time, and give the IP address to the second, even if it is already
# in use by the first. Useful for laptops with wired and wireless
# addresses.
#dhcp-host=11:22:33:44:55:66,12:34:56:78:90:12,192.168.0.60
# Give the machine which says its name is "bert" IP address
# 192.168.0.70 and an infinite lease
#dhcp-host=bert,192.168.0.70,infinite
# Always give the host with client identifier 01:02:02:04
# the IP address 192.168.0.60
#dhcp-host=id:01:02:02:04,192.168.0.60
# Always give the host with client identifier "marjorie"
# the IP address 192.168.0.60
#dhcp-host=id:marjorie,192.168.0.60
# Enable the address given for "judge" in /etc/hosts
# to be given to a machine presenting the name "judge" when
# it asks for a DHCP lease.
#dhcp-host=judge
# Never offer DHCP service to a machine whose ethernet
# address is 11:22:33:44:55:66
#dhcp-host=11:22:33:44:55:66,ignore
# Ignore any client-id presented by the machine with ethernet
# address 11:22:33:44:55:66. This is useful to prevent a machine
# being treated differently when running under different OS's or
# between PXE boot and OS boot.
#dhcp-host=11:22:33:44:55:66,id:*
# Send extra options which are tagged as "red" to
# the machine with ethernet address 11:22:33:44:55:66
#dhcp-host=11:22:33:44:55:66,net:red
# Send extra options which are tagged as "red" to
# any machine with ethernet address starting 11:22:33:
#dhcp-host=11:22:33:*:*:*,net:red
# Ignore any clients which are specified in dhcp-host lines
# or /etc/ethers. Equivalent to ISC "deny unkown-clients".
# This relies on the special "known" tag which is set when
# a host is matched.
#dhcp-ignore=#known
# Send extra options which are tagged as "red" to any machine whose
# DHCP vendorclass string includes the substring "Linux"
#dhcp-vendorclass=red,Linux
# Send extra options which are tagged as "red" to any machine one
# of whose DHCP userclass strings includes the substring "accounts"
#dhcp-userclass=red,accounts
# Send extra options which are tagged as "red" to any machine whose
# MAC address matches the pattern.
#dhcp-mac=red,00:60:8C:*:*:*
# If this line is uncommented, dnsmasq will read /etc/ethers and act
# on the ethernet-address/IP pairs found there just as if they had
# been given as --dhcp-host options. Useful if you keep
# MAC-address/host mappings there for other purposes.
#read-ethers
# Send options to hosts which ask for a DHCP lease.
# See RFC 2132 for details of available options.
# Common options can be given to dnsmasq by name:
# run "dnsmasq --help dhcp" to get a list.
# Note that all the common settings, such as netmask and
# broadcast address, DNS server and default route, are given
# sane defaults by dnsmasq. You very likely will not need
# any dhcp-options. If you use Windows clients and Samba, there
# are some options which are recommended, they are detailed at the
# end of this section.
# Override the default route supplied by dnsmasq, which assumes the
# router is the same machine as the one running dnsmasq.
#dhcp-option=3,1.2.3.4
# Do the same thing, but using the option name
#dhcp-option=option:router,1.2.3.4
# Override the default route supplied by dnsmasq and send no default
# route at all. Note that this only works for the options sent by
# default (1, 3, 6, 12, 28) the same line will send a zero-length option
# for all other option numbers.
#dhcp-option=3
# Set the NTP time server addresses to 192.168.0.4 and 10.10.0.5
#dhcp-option=option:ntp-server,192.168.0.4,10.10.0.5
# Set the NTP time server address to be the same machine as
# is running dnsmasq
#dhcp-option=42,0.0.0.0
# Set the NIS domain name to "welly"
#dhcp-option=40,welly
# Set the default time-to-live to 50
#dhcp-option=23,50
# Set the "all subnets are local" flag
#dhcp-option=27,1
# Send the etherboot magic flag and then etherboot options (a string).
#dhcp-option=128,e4:45:74:68:00:00
#dhcp-option=129,NIC=eepro100
# Specify an option which will only be sent to the "red" network
# (see dhcp-range for the declaration of the "red" network)
# Note that the net: part must precede the option: part.
#dhcp-option = net:red, option:ntp-server, 192.168.1.1
# The following DHCP options set up dnsmasq in the same way as is specified
# for the ISC dhcpcd in
# http://www.samba.org/samba/ftp/docs/textdocs/DHCP-Server-Configuration.txt
# adapted for a typical dnsmasq installation where the host running
# dnsmasq is also the host running samba.
# you may want to uncomment some or all of them if you use
# Windows clients and Samba.
#dhcp-option=19,0 # option ip-forwarding off
#dhcp-option=44,0.0.0.0 # set netbios-over-TCP/IP nameserver(s) aka WINS server(s)
#dhcp-option=45,0.0.0.0 # netbios datagram distribution server
#dhcp-option=46,8 # netbios node type
# Send RFC-3397 DNS domain search DHCP option. WARNING: Your DHCP client
# probably doesn't support this......
#dhcp-option=option:domain-search,eng.apple.com,marketing.apple.com
# Send RFC-3442 classless static routes (note the netmask encoding)
#dhcp-option=121,192.168.1.0/24,1.2.3.4,10.0.0.0/8,5.6.7.8
# Send vendor-class specific options encapsulated in DHCP option 43.
# The meaning of the options is defined by the vendor-class so
# options are sent only when the client supplied vendor class
# matches the class given here. (A substring match is OK, so "MSFT"
# matches "MSFT" and "MSFT 5.0"). This example sets the
# mtftp address to 0.0.0.0 for PXEClients.
#dhcp-option=vendor:PXEClient,1,0.0.0.0
# Send microsoft-specific option to tell windows to release the DHCP lease
# when it shuts down. Note the "i" flag, to tell dnsmasq to send the
# value as a four-byte integer - that's what microsoft wants. See
# http://technet2.microsoft.com/WindowsServer/en/library/a70f1bb7-d2d4-49f0-96d6-4b7414ecfaae1033.mspx?mfr=true
#dhcp-option=vendor:MSFT,2,1i
# Send the Encapsulated-vendor-class ID needed by some configurations of
# Etherboot to allow is to recognise the DHCP server.
#dhcp-option=vendor:Etherboot,60,"Etherboot"
# Send options to PXELinux. Note that we need to send the options even
# though they don't appear in the parameter request list, so we need
# to use dhcp-option-force here.
# See http://syslinux.zytor.com/pxe.php#special for details.
# Magic number - needed before anything else is recognised
#dhcp-option-force=208,f1:00:74:7e
# Configuration file name
#dhcp-option-force=209,configs/common
# Path prefix
#dhcp-option-force=210,/tftpboot/pxelinux/files/
# Reboot time. (Note 'i' to send 32-bit value)
#dhcp-option-force=211,30i
# Set the boot filename for netboot/PXE. You will only need
# this is you want to boot machines over the network and you will need
# a TFTP server; either dnsmasq's built in TFTP server or an
# external one. (See below for how to enable the TFTP server.)
#dhcp-boot=pxelinux.0
# Boot for Etherboot gPXE. The idea is to send two different
# filenames, the first loads gPXE, and the second tells gPXE what to
# load. The dhcp-match sets the gpxe tag for requests from gPXE.
#dhcp-match=gpxe,175 # gPXE sends a 175 option.
#dhcp-boot=net:#gpxe,undionly.kpxe
#dhcp-boot=mybootimage
# Encapsulated options for Etherboot gPXE. All the options are
# encapsulated within option 175
#dhcp-option=encap:175, 1, 5b # priority code
#dhcp-option=encap:175, 176, 1b # no-proxydhcp
#dhcp-option=encap:175, 177, string # bus-id
#dhcp-option=encap:175, 189, 1b # BIOS drive code
#dhcp-option=encap:175, 190, user # iSCSI username
#dhcp-option=encap:175, 191, pass # iSCSI password
# Test for the architecture of a netboot client. PXE clients are
# supposed to send their architecture as option 93. (See RFC 4578)
#dhcp-match=peecees, option:client-arch, 0 #x86-32
#dhcp-match=itanics, option:client-arch, 2 #IA64
#dhcp-match=hammers, option:client-arch, 6 #x86-64
#dhcp-match=mactels, option:client-arch, 7 #EFI x86-64
# Do real PXE, rather than just booting a single file, this is an
# alternative to dhcp-boot.
#pxe-prompt="What system shall I netboot?"
# or with timeout before first available action is taken:
#pxe-prompt="Press F8 for menu.", 60
# Available boot services. for PXE.
#pxe-service=x86PC, "Boot from local disk", 0
# Loads <tftp-root>/pxelinux.0 from dnsmasq TFTP server.
#pxe-service=x86PC, "Install Linux", pxelinux
# Loads <tftp-root>/pxelinux.0 from TFTP server at 1.2.3.4.
# Beware this fails on old PXE ROMS.
#pxe-service=x86PC, "Install Linux", pxelinux, 1.2.3.4
# Use bootserver on network, found my multicast or broadcast.
#pxe-service=x86PC, "Install windows from RIS server", 1
# Use bootserver at a known IP address.
#pxe-service=x86PC, "Install windows from RIS server", 1, 1.2.3.4
# If you have multicast-FTP available,
# information for that can be passed in a similar way using options 1
# to 5. See page 19 of
# http://download.intel.com/design/archives/wfm/downloads/pxespec.pdf
# Enable dnsmasq's built-in TFTP server
#enable-tftp
# Set the root directory for files availble via FTP.
#tftp-root=/var/ftpd
# Make the TFTP server more secure: with this set, only files owned by
# the user dnsmasq is running as will be send over the net.
#tftp-secure
# Set the boot file name only when the "red" tag is set.
#dhcp-boot=net:red,pxelinux.red-net
# An example of dhcp-boot with an external TFTP server: the name and IP
# address of the server are given after the filename.
# Can fail with old PXE ROMS. Overridden by --pxe-service.
#dhcp-boot=/var/ftpd/pxelinux.0,boothost,192.168.0.3
# Set the limit on DHCP leases, the default is 150
#dhcp-lease-max=150
# The DHCP server needs somewhere on disk to keep its lease database.
# This defaults to a sane location, but if you want to change it, use
# the line below.
#dhcp-leasefile=/var/lib/misc/dnsmasq.leases
# Set the DHCP server to authoritative mode. In this mode it will barge in
# and take over the lease for any client which broadcasts on the network,
# whether it has a record of the lease or not. This avoids long timeouts
# when a machine wakes up on a new network. DO NOT enable this if there's
# the slighest chance that you might end up accidentally configuring a DHCP
# server for your campus/company accidentally. The ISC server uses
# the same option, and this URL provides more information:
# http://www.isc.org/index.pl?/sw/dhcp/authoritative.php
#dhcp-authoritative
# Run an executable when a DHCP lease is created or destroyed.
# The arguments sent to the script are "add" or "del",
# then the MAC address, the IP address and finally the hostname
# if there is one.
#dhcp-script=/bin/echo
# Set the cachesize here.
#cache-size=150
# If you want to disable negative caching, uncomment this.
#no-negcache
# Normally responses which come form /etc/hosts and the DHCP lease
# file have Time-To-Live set as zero, which conventionally means
# do not cache further. If you are happy to trade lower load on the
# server for potentially stale date, you can set a time-to-live (in
# seconds) here.
#local-ttl=
# If you want dnsmasq to detect attempts by Verisign to send queries
# to unregistered .com and .net hosts to its sitefinder service and
# have dnsmasq instead return the correct NXDOMAIN response, uncomment
# this line. You can add similar lines to do the same for other
# registries which have implemented wildcard A records.
#bogus-nxdomain=64.94.110.11
# If you want to fix up DNS results from upstream servers, use the
# alias option. This only works for IPv4.
# This alias makes a result of 1.2.3.4 appear as 5.6.7.8
#alias=1.2.3.4,5.6.7.8
# and this maps 1.2.3.x to 5.6.7.x
#alias=1.2.3.0,5.6.7.0,255.255.255.0
# and this maps 192.168.0.10->192.168.0.40 to 10.0.0.10->10.0.0.40
#alias=192.168.0.10-192.168.0.40,10.0.0.0,255.255.255.0
# Change these lines if you want dnsmasq to serve MX records.
# Return an MX record named "maildomain.com" with target
# servermachine.com and preference 50
#mx-host=maildomain.com,servermachine.com,50
# Set the default target for MX records created using the localmx option.
#mx-target=servermachine.com
# Return an MX record pointing to the mx-target for all local
# machines.
#localmx
# Return an MX record pointing to itself for all local machines.
#selfmx
# Change the following lines if you want dnsmasq to serve SRV
# records. These are useful if you want to serve ldap requests for
# Active Directory and other windows-originated DNS requests.
# See RFC 2782.
# You may add multiple srv-host lines.
# The fields are <name>,<target>,<port>,<priority>,<weight>
# If the domain part if missing from the name (so that is just has the
# service and protocol sections) then the domain given by the domain=
# config option is used. (Note that expand-hosts does not need to be
# set for this to work.)
# A SRV record sending LDAP for the example.com domain to
# ldapserver.example.com port 289
#srv-host=_ldap._tcp.example.com,ldapserver.example.com,389
# A SRV record sending LDAP for the example.com domain to
# ldapserver.example.com port 289 (using domain=)
#domain=example.com
#srv-host=_ldap._tcp,ldapserver.example.com,389
# Two SRV records for LDAP, each with different priorities
#srv-host=_ldap._tcp.example.com,ldapserver.example.com,389,1
#srv-host=_ldap._tcp.example.com,ldapserver.example.com,389,2
# A SRV record indicating that there is no LDAP server for the domain
# example.com
#srv-host=_ldap._tcp.example.com
# The following line shows how to make dnsmasq serve an arbitrary PTR
# record. This is useful for DNS-SD. (Note that the
# domain-name expansion done for SRV records _does_not
# occur for PTR records.)
#ptr-record=_http._tcp.dns-sd-services,"New Employee Page._http._tcp.dns-sd-services"
# Change the following lines to enable dnsmasq to serve TXT records.
# These are used for things like SPF and zeroconf. (Note that the
# domain-name expansion done for SRV records _does_not
# occur for TXT records.)
#Example SPF.
#txt-record=example.com,"v=spf1 a -all"
#Example zeroconf
#txt-record=_http._tcp.example.com,name=value,paper=A4
# Provide an alias for a "local" DNS name. Note that this _only_ works
# for targets which are names from DHCP or /etc/hosts. Give host
# "bert" another name, bertrand
#cname=bertand,bert
# For debugging purposes, log each DNS query as it passes through
# dnsmasq.
#log-queries
# Log lots of extra information about DHCP transactions.
#log-dhcp
# Include a another lot of configuration options.
#conf-file=/etc/dnsmasq.more.conf
#conf-dir=/etc/dnsmasq.d
eth0 is set up for 192.168.20.1, netmask 255.255.255.0. I can get an IP from my client machine and ping 192.168.20.1, but cannot access the internet. resolv.conf on the client machine has a nameserver of 192.168.20.1. Also, Firefox time sout trying to access Google via it's static IP.
What should I do to grant the internet to my client machine?

http://wiki.archlinux.org/index.php/DNS_with_bind -> Did you try it too ?

Sync output timing to hardware trigger (PFI?)

I'd like to sync the output of my cards (2 PCI-6733 connected with an RTSI cable, and using BNC-2110's) to the AC power line of the lab I work in. That is, when told to output, they will always wait and output at the same point in the 60Hz cycle.
To that end, I've built a circuit that gives a TTL signal that is synced to the building's AC line. I now need to find a way to take this TTL signal and use it as the starter for my experimental sequence. If there is a delay that's ok, however it needs to be a consistant delay (to within a few microseconds preferably). This is so that everytime I run my experimental sequence, I'm starting at the same point in the AC power cycle.
Is it correct to use the PFI port to try and do this? Other suggestions?
The sequence would be:
Step 1: Cards are ready to write
Step 2: Cards write once, started by hardware trigger of the TTL from the circuit I built.
Step 3: Other Labview code runs, and then returns to step 1.
Solved!
Go to Solution.

Ok. Knowing about DAQmx export signal is definitely helpful. I don't think I've got everything set up quite right though, as it's giving me an error with what I tried.
Error -89136 occurred at DAQmx Start Task.vi:1
Possible reason(s):
Specified route cannot be satisfied, because the hardware does not support it.
Property: StartTrig.OutputTerm
Destination Device: Dev1
Destination Terminal: PFI0
Task Name: _unnamedTask<1E>
I'm not sure on the correct order of the DAQmx functions. I currently have: Create Channel -> Timing -> Write -> Export Signal (?) -> Start Task. This doesn't seem to be the correct way to do this though. The sample you linked to had the Write after the Start Task... which doesn't quite make sense to me... In addition, I'm not sure where to put the DAQmx Trigger.vi in this sequence.
Any pointers to set me in the right direction? I've attached a screenshot and vi of my current code to show you what I do now.
Attachments:
Write2PCI6733 (SubVI).vi ‏54 KB
WriteToPCIscheme_Mar9_2012.PNG ‏59 KB

Is there any plan to for usb 9234 to support hardware trigger?

We expect to provide our low cost modal testing solution based on NI usb-9234 and ModalVIEW software. Hardware trigger is needed when using usb 9234 to perform impact testing.
Message Edited by Troglodyte on 07-11-2008 10:44 PM

Thank you for your post.
In order to keep the power of the board to a minimum, and to keep our prices very competitive, our customers use software triggering for applications such as impact hammer test. We are happy to coach your development team in the implementation of software analog triggering in LabVIEW, Our Sound and Vibration Assistant, or with our "C" Api. I have asked our Product Support Engineer to post a note regarding the "C" api function calls. Stay tuned.
Also, please feel free to contact us directly as the need arises.
Sincerely,
Preston Johnson
Principal Sales Engineer
Condition Monitoring Systems
Vibration Analyst III - www.vibinst.org, www.mobiusinstitute.com
National Instruments
[email protected]
www.ni.com/mcm
www.ni.com/soundandvibration
www.ni.com/biganalogdata
512-683-5444

IMAQdx with JAI and a hardware trigger

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