device number makes a difference in NI SCOPE rise time

[Pablop]

I just moved 3 scope cards (PCI 5102 ) from an old PC station to a new PC station. Using MAX I set the device numbers to match the old configuration.

Everything looks OK except which ever device I designate as device 1, shows excessive rise time. If I use MAX to call the same physcial card something other than device 1, the rise time go aways. See the attached screen shots.

What am I missing here? I can't find any configurations settings to explain this.

[Evan]

The reason you are getting different results is that you are sampling at different rates.  You can see the rate above the green LED.  The rate is a combination of the Time/Div and the record length that you have selected.

So take a look at the configured record length for each configuration by going to Edit>>Device Configuration.  Then choose the one that works best for you.

The reason the behavior follow Dev1 is because the SFP saves the configuration information for each device.  However, it is by the device number not be the specific board itself.  So the configuration file for Dev1 has the record length set lower, and therefore the differnce in data.