NI 5112 and Error with Example 5112 Synchronization.vi

[Saraba]

I have two NI 5112, and I am trying a triggered acquistions. Instead of getting the display from all four channels, I am getting display only from two Master channels for a moment while the program is runing, and than this display disappers.

Some times and the following error appears in Master Scope output block of the front panel: Error occured at ni Scope MultiFetch Cluster, Vi .
Maximum time exceeded before the operation completed.
Buffer 0, Points done:0.00000

This error is not happening in every run time of this function.

But the output from the Slave channels never displayed on the wave from, and the following error
appears in Salve output block of the front panel:
Error occured at ni Scope MultiFetc
h Cluster, Vi .
Maximum time exccded before the operation completed.
Buffer 0, Points done:0.0000

I am using one NI PXI chassis ,two NI 5112, and one NI PXI 8176.

I have tried by switching the device numbers of master and slave in the front panel, but I still received the same errors.

I have LabView 6.1, NI-DAQ 6.9.2, Windows 2000, and Scope 2.1.2 installed on my computer.

[Jack_A.]

By default, the example you are using implements a PCI synchronization scheme. Make sure that you select PXI as the Bus Type on the front panel.

Does the Configured Acquisition example work for both of your boards? If so, this is just a synchronization issue.

Which PXI chassis are you using? And what slots are the boards in?

Finally, make sure that the trigger channel and level that you have selcted is appropriate to trigger to acquisition. If you don't trigger the acquisition, you'll get timeout errors like the ones you are seeing now.

Jack Arnold
Application Engineer
National Instruments

[Saraba]

I am using NI PXI 1042 that has eight slots. NI 5112 are in third and fouth slots. This configuration was also verified using Measurement & Atuomation Explorer.
Also, I am using PXI as my bus type in the front panel.

The example does work although I interchanged the device numbers on the front panel.

I have checked the trigger levela and the channel number of the master device, but I am still getting the reported error message on each case.

My additional question is that if the trigger level that is set on the triggering channel of the master device has any effect on passing the trigger to the slave device. In may case, the signal levels on mater and slave devices are not the same.