[SI-LIST] Re: 4-Port VNA calibration question
- From: "Gary Otonari" <garyo@xxxxxxxxxxxx>
- To: "'Virendra'" <adsurevv@xxxxxxxxx>, <si-list@xxxxxxxxxxxxx>, <istvan.novak@xxxxxxx>
- Date: Mon, 17 Apr 2006 11:06:28 -0700
Hi Virendra,
Yes, OR (Agilent hat ?on?) you can upgrade your analyzer to a 4-port PNA,
which allows this flexibility with software resident on the analyzer :-)
NOTE: I agree with Steve Weir?s comments that the dissimilar probes are not
an ideal situation, and can limit the bandwidth of the calibration. You may
want to look for a cal substrate that can accommodate both probe pitches.
Example, if you?re using Ground-Signal style, the CS-11 can be used for SOLT
cal from 150u to 1250u?.
-- Gary
----------------------------------------------------------------------------
--------
Attend the <http://www.gigatest.com/Training/CourseEventList.jsp> GTL
Signal Integrity University in Sunnyvale, CA - May 18 - May 26
GTL 122 - Fundamental Principles of Signal Integrity
GTL 250 - High Speed Board Design
GigaTest Labs
134 South Wolfe Road * Sunnyvale, CA * 94086
408.524.2700
www.gigatest.com <http://www.gigatest.com/>
-----Original Message-----
From: Virendra [mailto:adsurevv@xxxxxxxxx]
Sent: Monday, April 17, 2006 10:48 AM
To: garyo@xxxxxxxxxxxx; si-list@xxxxxxxxxxxxx; istvan.novak@xxxxxxx
Subject: RE: [SI-LIST] 4-Port VNA calibration question
Gary,
we are using PLTS and it seems from you email that i need to use the BMS,
correct?
thanks again,
Virendra
Gary Otonari <garyo@xxxxxxxxxxxx> wrote:
Hi Virendra,
What are you using to control the VNA?
If it's an 87xx, it must be either the Balanced Measurement System (BMS) or
Physical Layer Test System (PLTS). Some 4-port VNAs can use either of these
software packages. They are quite different in terms of calibration
requirements and flexibility, and you need to check which version.
Our understanding is that PLTS (the more recent software) will not allow
dissimilar calibration kits to be used on individual ports in a calibration.
So you will be better off using BMS if you can. Otherwise, we would
recommend using the same probe pitch and cal substrate, with corresponding
cal kit, on each port, if possible....
-- Gary
----------------------------------------------------------------------------
--------
Attend the GTL Signal Integrity University in Sunnyvale, CA - May 18 - May
26
GTL 122 - Fundamental Principles of Signal Integrity
GTL 250 - High Speed Board Design
GigaTest Labs
134 South Wolfe Road * Sunnyvale, CA * 94086
408.524.2700
www.gigatest.com
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Virendra
Sent: Monday, April 17, 2006 10:02 AM
To: si-list@xxxxxxxxxxxxx; istvan.novak@xxxxxxx
Subject: [SI-LIST] 4-Port VNA calibration question
Hi All,
I have a question about calibrating a VNA for 4-port measurements. We are
using standard pico probes and Agilent 87xxX VNA. The problems we are
having is that one pair of probes now have different pitch than the other
pair and it is not possible to use the same calibration substrate for both
the pairs. Does anyone know a way to calibrate this kind of setup with two
different calibration substrates?
thanks in advance,
Virendra
---------------------------------
Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone calls. Great rates
starting at 1¢/min.
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List FAQ wiki page is located at:
http://si-list.org/wiki/wiki.pl?Si-List_FAQ
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
_____
Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone calls. Great
<http://us.rd.yahoo.com/mail_us/taglines/postman7/*http:/us.rd.yahoo.com/evt
=39666/*http:/beta.messenger.yahoo.com> rates starting at 1¢/min.
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List FAQ wiki page is located at:
http://si-list.org/wiki/wiki.pl?Si-List_FAQ
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
