Measurement Computing DASYLab - Manual (Page 18)

2-6 Configuring DASYLab for Personal Daq/54, 55, 56 896992 DASYLab - Standard Driver
Use the following guidelines when selecting a physical channel number.
Make sure that the physical channel that you are assigning exists in your hardware
configuration. For instance, it would be a mistake to assign channel 6 for a Personal
Daq/55, as that product has no channel 6. If a nonexistent channel is assigned DASYLab
will display an error message when you try running the worksheet.
During the assignment process, both differential and single-ended channels can be used.
You may skip physical channels during the assignment process. However, you must
assign physical channels to virtual ones in monotonic ascending order. If you fail to do
this the driver will rearrange them, resulting in virtual channels with different information
than that which is expected. Examples of good and bad assignments follow.
Examples of Good and Bad Channel Assignments
Good
Virtual Channels 0 1 2 3 4 5
Physical Channels 1 2L 3 4 11 12L
Bad
Virtual Channels 0 1 2 3 4 5
Physical Channels 1 2L 5H 13H 4L 5L
In this case the driver will rearrange the physical channels as follows:
Virtual Channels 0 1 2 3 4 5
Physical Channels 1 2L 4L 5L 5H 13H