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National Instruments VXI-USB User Manual

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Appendix B
Default Settings
© National Instruments Corporation
B-3
Default Software Settings
Table B-1.  VXI-USB Hardware Default Settings
Hardware Component
Default Setting
S1—Firmware recovery
N: do not recover firmware
S2—VXIbus CLK10 source
From onboard oscillator
S3—SMB trigger in termination
ON: terminated
S4—SMB CLK10 in termination
ON: terminated
S5—SMB CLK10 direction
IN: receive CLK10 signal
S6—SMB CLK10 out polarity
Noninverted
Table B-2.  MAX USB Tab Default Settings
Editor Field
Default Setting
USB block size
64 KB
Table B-3.  MAX VXI Bus Tab Default Settings
Editor Field
Default Setting
Bus timeout value
500 
µs
VXI retry generation
Enabled
Automatic retries
Disabled
A24/A32 write posting
Disabled
Transfer limit (bytes)
256/2048 for 2eVME protocol
Requester mode
Release on Request
Request level
3
Fair requester
Enabled
Bus arbitration mode
Prioritized
Arbiter timeout
Enabled