Recommended Guidelines Multichannel Analog out DAQmX

[gowthameie]

I wish to perform Multichannel Analog out DAQmx using PXIe-4322.

I wish to know recommended guidelines for Multichannel Analog Out DAQmx.

I attached simulated  DAQ code 

-for 1 channel 1 sample based   2 Analog out channel as well as

-for N channel 1 sample based   2 Analog out channel.

kindly explore pros and cons for the both codes.

The objective of this question is : 

if I am using N Channel-1 Sample  configuration, when I am writing AO0 channel with new data, why should I write AO1 channel same value  also.

Example:

Initially AO 0=1.2V, AO 1=0.7V, array is  writing to their corresponding channel.

later i wish to change AO 0 alone with new value of 1.69V. at that time, Both AO 0= 1.69V and AO1=0.7V are writing.

is that correct/recommended one?

any Task creation will cause any issue?

[Kevin_Price]

Here's some brief notes that come to mind about the tradeoffs:

2 tasks, 1 channel each

Pros:

• write to either channel any time without needing to also write to the other

Cons:

• can only use software timing for updates
• cannot update both channels in sync with one another

1 task, 2 channels

Pros:

• can generate waveforms with hardware-precise timing
• both channels can be updated in sync with one another

Cons:

• must write data for both channels, even if only 1 is changing

-Kevin P