[SI-LIST] Re: VNA Calibration

This is true if you are increasing IF bandwidth.  However, if you are 
decreasing IF bandwidth, you might be limited by the IF bandwidth setting 
during calibration.  If you want to measure low-level signals, be sure to 
calibrate at an IF bandwidth that is narrow enough.

--
Daniel

From: "istvan novak" <istvan.novak@xxxxxxxxxxxxxxxx>
> Zhangkun,
> 
> As long as the VNA works properly, there is no need to recalibrate if you
> change only the bandwidth.  You can check for this by measuring a known
> component after calibration, than changing the bandwidth and remeasure.  As
> IF BW goes up, receiver noise may show up at low reading values.  That
> should be all.
> 
> Regards,
> 
> Istvan
> 
> 
> ----- Original Message -----
> From: "Zhangkun" <zhang_kun@xxxxxxxxxx>
> To: "si-list" <si-list@xxxxxxxxxxxxx>
> Sent: Friday, June 20, 2003 7:57 AM
> Subject: [SI-LIST] VNA Calibration
> 
> 
> > Dear all:
> > I have one question about VNA calibration. If I change the IF Bandwidth,
> is it necessary to re-calibrate?
> >
> > When I change the IF Bandwidth, VNA does not give caution.
> >
> > Best Regards
> >
> > Zhangkun
> > 2003.06.20

-- 
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