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Does the NI 9151 Affect the Performance of my C Series Modules?

Hardware: CompactRIO>>Chassis (Backplanes)>>cRIO-9151

Problem:
I am using the NI 9151 R Series Expansion Chassis with my PXI R Series card. Does using the expansion chassis affect the performance of my C Series modules compared to using them in a normal CompactRIO Chassis?

Solution:
The expansion chassis does inflict different speed limitations on several modules. Additionally, the NI 9151 does not support sharing timebases between modules that have Delta-Sigma ADC. Below is a list of modules affected (either speed or ability to share clocks) when used with the NI 9151 R Series Expansion Chassis. Module specifications will list any speed differences between active and passive backplanes.

• Analog Input Modules
  NI 9201, NI 9203, NI 9205, NI 9206, NI 9221
• Analog Output Modules
  NI 9263, NI 9264, NI 9265
• Digital Modules
  NI 9403, NI 9425
• Delta-Sigma ADC Modules
  NI 9225, NI 9229, NI 9233, NI 9234, NI 9235, NI 9236, NI 9237, NI 9239
• File IO Modules
  NI 9802

Related Links:
KnowledgeBase 3R0KOB6K: What Type of Cable Should I Use to Connect to My NI 9151 Expansion Chassis?
KnowledgeBase 42FFNLCW: Can I Use More Than 40 Digital I/O Lines on the NI 9151 R-Series Expansion Chassis?
Product Page: NI 9151

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Report Date: 02/21/2008
Last Updated: 08/14/2009
Document ID: 4IKH40N0

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