Appendix C
Common Questions
©
National Instruments Corporation
C-3
In LabVIEW, can I use different input limits for the same
SCXI-1521/B physical channel?
Yes. Since the SCXI-1521/B has only one gain, the same value is
programmed each time.
Some SCXI modules permit flexible scanning. Does the SCXI-1521/B
module permit flexible scanning?
Yes. Flexible scanning is described in Chapter 4,
Are there any cabling restrictions when using an SCXI-1521/B module
with a plug-in E/M Series DAQ device?
Yes. If a chassis contains an SCXI-1521/B, SCXI-1520, SCXI-1530/1531,
or SCXI-1140 module, at least one of these modules must be the cabled
module. A cabled module is the module connected directly to the
E/M Series DAQ device.
Can I use the SCXI-1521/B with a version of NI-DAQ that works under
the Macintosh Operating System (Mac OS)?
No, as of NI-DAQ 6.6.1. Check the release notes of later versions of
NI-DAQ at
ni.com
for updates.
Is a register-level programming manual available for the
SCXI-1521/B?
NI does not support register-level programming for the SCXI-1521/B.
PFI 7/
START SCAN
PFI 7/
AI SAMP CLK,
AI SAMP
46
38
Input
EXTROBE*
EXTROBE*
37
45
Input
1
With respect to the E/M Series DAQ device.
Table C-1.
Digital Signals on the SCXI-1521/B (Continued)
E/M Series
DAQ Device
Signal Name
NI-DAQmx
SCXI Signal Name
50-Pin
Connector
68-Pin
Connector
Direction
1
