Problems with Highspeed DIO 6534

[OZI]

Hi,
I want to measure Digitalsignals with a DIO 6534. The 6534 is configured to capture 32 Bit on all positive edges of a trigger signal. I use the Pattern generation mode.
The problem is, that I have missing frames on a frequency of 8MHz. But the card can measure up to 20MHz.

Is there are problem with measuring/capturing datas ? Can I improve my configuration ? Which mode is the best to sample datas

The configuration is:
DIG_Grp_Config (1, 1, 4, 0, 0);
group size:                  4 (32Bit)
Port:                            0
Direction:                    Latched input

DIG_Grp_Mode (1, 1, 0, 0, 1, 0, 0);
Protocol:                      Level
Edge mode:                 rising
Request mode:            active low
Acknowledge mode:    active high
Delay Time:                 none

DIG_Block_PG_Config (1, 1, 2, 1, -3, 1, 0);
PG mode:                    single
Clock source:              extern
Timebase:                   10ns
Pattern interval:           1
External gate:              disabled

Thanks
Oliver

[Johann.Wagner]

Hi,

first question is with what language do you program ? LV or CVI or Visual Basic and what version ?

Do you look in the trigger examples for pattern generation in labview - find examples - search for hsdio (see my screenshot in *.doc) ?

Pattern Generation links for HSDIO cards

http://zone.ni.com/devzone/cda/epd/p/id/211

http://zone.ni.com/devzone/cda/epd/p/id/5024

http://zone.ni.com/devzone/cda/epd/p/id/737

general examples for HSDIO

http://zone.ni.com/devzone/cda/epd/p/id/5270

http://zone.ni.com/devzone/cda/epd/p/id/5020

Hope this helps - perhaps when you control the examples structure you find the difference to your application and so the error

Best Regards

AE Munich (germany)