PIXe-5122 Questions

I'm thinking of getting a PXI system for an ATE I need to build I've poked around and found the 5122 is a good scope, but I have two questions;
Can the 5122 do any kind of frequency analysis, I need to measure THD?
Are the two channels differential?

Hi DanHHunter,
The 5122 itself will not perform the frequency analysis; it is just the digitizer to convert analog signals to the digital domain. The frequency analysis can be done using NI software such as SignalExpress or LabVIEW. LabVIEW will provide the most options and functionality as far as signal processing and analysis. I have included some Help documentation on certain functions in LabVIEW and SignalExpress that will allow you to measure the THD of a signal acquired by the 5122.
http://zone.ni.com/reference/en-XX/help/371361H-01/lvwave/harmonic_distort_analyzer/
http://zone.ni.com/reference/en-XX/help/371268M-01/expresswb/distortion/
To answer your second question, the channels on the 5122 are single-ended. If you would like to take differential measurements, the recommended option for this is to use the 5122 in conjunction with the Tegam 4040A PXI Instrumentation Amplifier. I have included the website for this product. Please refer to the data sheet on that website for the 4040A and the NI 5122.
http://www.tegam.com/product.asp?modelNumber=4040A
Regards,
James D.
Applications Engineer
National Instruments

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Hi,
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http://help.adobe.com/en_US/Photoshop/11.0/WSCCBCA4AB-7821-4986-BC03-4D1045EF2A57a.html
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Thank you for your time,
Austin McElroy

*I have posted the answer on all 3 of the forums that you queried, but please continue the thread here, in the appropriate section:*
Good morning Austin,
Thanks for contacting National Instruments with your issue, we'll try our best to solve it for you as quickly and efficiently as possible.
I'm going to have to contact R&D about this specification. There are some that might get us close, such as the fact that the PLL Reference Frequency has to be accurate to +/-50 ppm (page 14 of (http://digital.ni.com/manuals.nsf/websearch/5D8BAB258130779686256FA800691AAA)) and that the sample clock delay range is 1 sample clock period (Page 13), that I could postulate on, but I'd rather get the definitive answer.
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>>Personal information removed to comply with the Verizon Wireless Terms of Service<<
Edited by: Verizon Moderator

Cisco pix 501 VPN question

Hi,
We have a customer with a Pix 501(v6.3.4)(PDM v3.02) Firewall.
We can succesfully setup a VPN connection, but the client loses the Internet connection when the VPN connection is up. I found some articles on the Internet about split tunneling, but I cant figure out how to do this.
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I suppose 501 is Easy VPN server
Split tunnel says what traffic goes to VPN tunnel if you dont have split tunnel enabled all traffic iis encrypted you need specify with ACL what traffic should be encrypted
check following example whe is ACL 80 used for split tunnel
http://www.cisco.com/en/US/products/sw/secursw/ps2120/products_configuration_guide_chapter09186a0080172787.html#wp1062497
M.
Hope that helps rate if it does

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