Thread: Time gating material measurement


Permlink Replies: 1 - Pages: 1 - Last Post: Apr 24, 2012 12:45 PM Last Post By: Dr_joel
brianbidwell

Posts: 26
Registered: 04/07/07
Time gating material measurement
Posted: Feb 16, 2012 4:07 PM
Click to report abuse...   Click to reply to this thread Reply
I have always felt that time gating to improve a calibration in coaxial or waveguide should not be used but I am not clear on what Agilent teaches on this subject when it comes to materials measurements.

When I read application note http://cp.literature.agilent.com/litweb/pdf/5954-1535.pdf on Page 7 under "Further Enhancements Using Gating" The load and source match are improved to produce less ripple in the measurement of PTFE .

Does Agilent still promote or suggest this technique for material measurements after a full 2 port cal is completed?

I own the latest Agilent 85071E with options but haven't explored this. Could someone from Agilent tell us if they promote time gating for a coax/waveguide calibration with their 85071 software these days?
Dr_joel


Posts: 2,369
Registered: 12/01/05
Re: Time gating material measurement
Posted: Feb 18, 2012 7:50 AM   in response to: brianbidwell in response to: brianbidwell
Click to report abuse...   Click to reply to this thread Reply
If you do a perfect calibration, time gating will give no advantage (nothing to gate out). If you do NOT do a perfect calibration, time gating can be useful to remove residual effects. Of course, you must take care that your gating does not remove responses from the DUT and only removes responses from the system.

Point your RSS reader here for a feed of the latest messages in all forums