National Instruments SCXI -1125 用户手册
Appendix D Common Questions
© National Instruments Corporation
D-3
In LabVIEW, can I use different input limits for the same SCXI-1125
channel if I repeat the channel in the SCXI channel string array?
channel if I repeat the channel in the SCXI channel string array?
No, the SCXI-1125 cannot dynamically change the gain settings during
scanning. Therefore, channels with similar input ranges should be grouped
together in the channel string array. Make sure that repeated channels in
different indices of the channel string array have the same input limits in
the corresponding input limits array.
scanning. Therefore, channels with similar input ranges should be grouped
together in the channel string array. Make sure that repeated channels in
different indices of the channel string array have the same input limits in
the corresponding input limits array.
In LabVIEW, can I use virtual channels with parallel mode channels
on the SCXI-1125?
on the SCXI-1125?
Yes, virtual channels work with parallel mode operation on the SCXI-1125.
The E/M Series DAQ device must be directly connected to the module in
parallel mode operation. Also, virtual channels that use built-in CJC are
disabled and cannot be used in parallel mode.
The E/M Series DAQ device must be directly connected to the module in
parallel mode operation. Also, virtual channels that use built-in CJC are
disabled and cannot be used in parallel mode.
In LabVIEW, can I use the calgnd channel string when the SCXI-1125
is in parallel mode?
is in parallel mode?
Yes, you can autozero the SCXI-1125 in LabVIEW when using the module
in parallel mode.
in parallel mode.
Table D-2. Digital Signals on the SCXI-1125
Traditional
DAQ Signal
Name
DAQmx
Signal Name
SCXI Signal
Name
50-Pin
Connector
68-Pin
Connector
Direction
DIO0
P0.0
SER DAT IN
25
52
Output
DIO4
P0.4
SER DAT OUT
26
19
Input
DIO1
P0.1
DAQ D*/A
27
17
Output
DIO2
P0.2
SLOT 0 SEL*
29
49
Output
SCANCLK
AI HOLD
COMP,
COMP,
AI HOLD
SCAN CLK
36
46
Output
EXTSROBE*
EXTSROBE
SER CLK
37
45
Output
STARTSCAN
AI SAMP
CLK,
CLK,
AI SAMP
SYNC*
46
38
Output