National Instruments Module SCXI-1125 User Manual page 81

Appendix B Using SCXI Channel Strings with Traditional NI-DAQ (Legacy) 7.0 or Later
Notes Using parenthesis surrounding multiple channels in a channel string is important
for correct scanning operation of the SCXI channels.
In a single-chassis system, the
module and E/M Series DAQ device to be automatically set to fit the input limits
parameter. When this specifier is omitted, the default gain on the E/M Series DAQ device,
usually the lowest gain, is used, but the SCXI-1125 gain is adjusted to fit the input limits.
NI recommends using the
Repeating channels or having channels out of sequence in a scan list is not supported on
all SCXI modules. Refer to the manual of each module for information on this feature,
which is referred to as flexible scanning or random scanning.
SCXI-1125 User Manual
is the list of channels that are scanned for module
channels
several formats:
•
ob x ! sc y ! md z ! nx
•
ob x ! sc y ! md z ! ( n0 , n2 )
channel that are not necessarily sequential.
•
ob x ! sc y ! md z ! n0 : n3
sequential list of input channels, inclusive.
•
ob x ! sc y ! md z ! ( n0 , n2 , n3 : n4 , n1 , n5 , n2 )
, , and represent single channels, not necessarily sequential,
n0 n2 n5
and and represent the endpoints of an ascending sequential list
n3 n4
of channels, inclusive. In this case, channels
repeated in the channel list.
ob x !
specifier.
ob x !
For more information about using SCXI channel string, refer to the
LabVIEW Measurements Manual and SCXI-1125 shipping examples.
, where is a single input channel.
nx
, where
, where
n0
specifier is optional and causes the gains on the
B-2
. It can have
z
are individual input
n0 , n2
and represent an ascending
n3
, where
and are explicitly
n1 n2
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