[SI-LIST] Re: AW: Re: calibration of VNA
- From: Jim Nadolny <jim.nadolny@xxxxxxxxxx>
- To: "Gert.Havermann@xxxxxxxxxxx" <Gert.Havermann@xxxxxxxxxxx>, "dmarc-noreply@xxxxxxxxxxxxx" <dmarc-noreply@xxxxxxxxxxxxx>, "oj_danzy@xxxxxxxxxxxx" <oj_danzy@xxxxxxxxxxxx>, "si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>
- Date: Wed, 10 Dec 2014 16:03:19 +0000
Gert -
I'm glad you brought this up - we were just debating this internally. Do you
know if SmartCal supports an unknown thru cal for mixed connector type
calibrations?
On a separate note - I trust that you will be at mEEt and gEEk this year at
DesignCon. I thought you deserved a prize for the trivia contest but I was
overruled by our marketing guys. Something about you not buying enough
connectors ;). We will be sending out the announcement in a few days or so.
jn
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Havermann, Gert
Sent: Wednesday, December 10, 2014 3:25 AM
To: dmarc-noreply@xxxxxxxxxxxxx; oj_danzy@xxxxxxxxxxxx; si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] AW: Re: calibration of VNA
make sure that the selected thru connections are physically possible (i.e. do
not select a thru connection from Probe to coax).
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-----Ursprüngliche Nachricht-----
Von: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] Im
Auftrag von heyfitch
Gesendet: Mittwoch, 10. Dezember 2014 03:46
An: oj_danzy@xxxxxxxxxxxx; si-list@xxxxxxxxxxxxx
Betreff: [SI-LIST] Re: calibration of VNA
Thanks, O.J. Indeed, it appears I can assign different cal kits individually to
different ports, which includes various pitch probes and connector cal kits.
Best Regards,Vadim
On Tuesday, December 9, 2014 12:27 PM, "oj_danzy@xxxxxxxxxxxx"
<oj_danzy@xxxxxxxxxxxx> wrote:
Vadim,
When you start the calibration wizard, you would want to use the SmartCal
(Guided Calibration) process instead of the Unguided Calibration process. It
will allow you to select a specific connector type and corresponding cal kit
per port. This will allow you to have different pitch probes or a coax port
and probe port. You'll just need to have the cal kits loaded for the probe
pitches or mechanical cal kits being used, ecal modules will show up if they
have that connector type.
Sincerely,
O.J. Danzy
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of heyfitch
Sent: Tuesday, December 09, 2014 3:05 PM
To: SI-LIST
Subject: [SI-LIST] calibration of VNA
When calibrating PNA 5225A, I usually select eCal - if the DUT is connectorized
all around - or select ".ckt" file - if probing with micro probes. Only one
ckt file can be selected, matching either 300um, or 500um, or some other probe
pitch. (These files came from the probe vendor.) There are situations when one
needs to have probe of different pitch at different ports. Or, the DUT has
connectors one some ports and others are to be micro probed. It appears that
my PNA does not allow for either of these two types of calibrations:1) with
uProbes of disparate pitch on different ports,2) with connectors and uProbes on
different ports.
Has anyone figured out how to deal with this? Are there papers on the subject?
Thanks in advance for sharing your experience...
Vadim HeyfitchAvago Technologies, FOPD
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