Need urgent help with Error -200018

[Mystogan]

hi norbert,

We have here another host PC, but I think it has about the similar specification. I've tried to contact NI per phone, but they are always busy, I dont get any support from telephone. And my supervisor keeps pushing me to call them as much as possible (but I just get the machine).Well, any NI technician is online at the moment in this forum?

regards,

Yan.

[Mystogan]

hi norbert,

I've just read about other buffer underflow error here, and want to ask you about using onboard buffer to output my signal. Any example for this in web?

regards,

yan.

[Mystogan]

hi norbert,

I've tried to call few times already to get support about this problem. And Mr. Spitzer (support techniker of NI Germany) has told me that possibly my PC is not fast enough to make this works. He said he would like to find out about this and confirm to me if its really PC spec problem or no. Can you please confirm this again with him, because my supervisor is starting to lose his patient about this.

regards,

yan.

[Alex_Pi]

As for DAQmx: Continuous buffered generation: https://decibel.ni.com/content/docs/DOC-15893 the Problem occurs durring the Transfer over the DMA oft the PCI.

Unfortunately when you said that everything works aslong as you dont run the Scope VI, that made the guess for the limited Buffer obsolete.

Chasis: NI-PXIe 1082
SLOT 1: Controller: NI-PXIe 8370 verbunden mit MXI-express X4 Kabel (3-meter), verbunden mit PCI slot 4 (mein PC ist DELL Optiplex 990, service tag: 3B7K65J)
SLOT 2: -frei-
SLOT 3: NI -PXIe 6544 (100MHz Digital I/O)
SLOT 4: NI-PXIe 6674T (Timing Module)
SLOT 5: -frei-
SLOT 6: -frei-
SLOT 7: NI-PXI 6733 (16Bit Analog Output)
SLOT 8: NI-PXI 5105 (12Bit 60MS/s Digitizer)

NI 6733: http://sine.ni.com/ds/app/doc/p/id/ds-158/lang/en

Max update rate
Number of Channels	Max Update Rate
	Using Local FIFO (kS/s) 1	Using Host PC Memory (kS/s) 2
1	1,000	1,000
2	1,000	1,000
3	1,000	1,000
4	1,000	1,000
5	1,000	1,000
6	952	1,000
7	833	869
8	740	769

Type of DAC		Double-buffered, multiplying
FIFO buffer size
NI 6731		8,192 samples
NI 6733		16,384 samples
DMA channels		3
Data transfers		DMA, interrupts, programmed I/O
DMA modes		Scatter-gather

Since you ran the test with 8 Chans and 1MS/s sucessfully, i don't suppose that that table is the problem.

Alexander P.

NIG AE

NIE SRQ:1226512

[Mystogan]

Hi Alex,

thanks for clarification. But now, how can I generate and acquire the desired waveform with sample rate 1MHz? hardware exchange?

regards,

Yan.