Gigahertz Solutions calibration problem...suggestions?

> Hi everyone who may have experience with the Gigahertz Solutions
> series of RF Meters.
>
> We have an HFW 35C (2.4-6 GHz) HF Analyzer. It's brand new and came
> from an authorized dealer. This is the second one of this unit we
> have tried. It has a calibration problem (I assume that's what it
> is). In the "Fine" range selection, and in the "Peak" setting, it's
> display does not read lower than 00.4 uW/m2.
>
> It appears as though it has calibrated itself (or rather, lost it's
> calibration), and is using this as it's "zero point", instead of
> actually displaying 00.0 uW/m2. Occasionally it goes to 00.3 uW/m2,
> but only for a second, then it jumps back up to 00.4.
>
> If I set the audio analysis to "click" (the highest position for the
> switch), it makes it's clicking noise, but just sporadically, and the
> numbers don't change.
>
> It DOES respond to sources of RF (the numbers on the display go up,
> and the audio responds correctly), and then it always goes back to
> 00.4 when the RF source is turned off.
>
> To make sure it's not the ambient RF (this house seems quite good),
> I've tried disconnecting the antenna from the meter, covering the
> antenna with foil and RF shielding fabric, even covering the main unit
> with foil...and it still shows 00.4 uw/m2, and makes that same,
> infrequent "clicking" noise.
>
> In "Average" mode, it behaves exactly the same way as I've described
> above, except it's "zero point" seems to be set at 00.1 uW/m2.
>
> This is most puzzling and a bit frustrating, too. The first time we
> tried this meter, it was loaned to us, and had been through quite a
> lot of use, and it also had a calibration problem, except it seemed
> stuck at 1.4 uW/m2, and this zero point would then get stuck at other
> zero points when exposed to higher frequencies. So strange!
>
> I would expect a meter that costs this much (I know it's not a fully
> "professional" 20, 000 dollar unit, but for us it's a LOT of money) to
> at least be calibrated correctly.
>
> Has anyone ever experienced this, and can you offer any solutions on
> how to fix this(other than sending it all the way back to Germany)?
> Our Canadian supplier is on vacation.
>
> Thanks for any help!
>
> Regards,
>
> R.
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>

> All meters do work within their tolerances.
>
> 00.4 uW/m2 is not bad.
>
> The clicking audio analysis should be avoided, and has no serious use,
> except when you cannot read on the display.
>
> So, you should not bother, and take it for granted.
>
> The point is, that one may measure sources that are between 2.4 and 6 GHz.
> For that, the meter should read values much higher than 1 uW/m2.
>
> Greetings,
> Charles Claessens
> member Verband Baubiologie
> www.milieuziektes.nl
> www.milieuziektes.be
> www.hetbitje.nl
> checked by Bitdefender
>
>
> ----- Original Message -----
> From: "rticleone" <[hidden email] <rticleone%40yahoo.ca>>
> To: <[hidden email] <eSens%40yahoogroups.com>>
> Sent: Thursday, February 21, 2008 17:47
> Subject: [eSens] Gigahertz Solutions calibration problem...suggestions?
>
> > Hi everyone who may have experience with the Gigahertz Solutions
> > series of RF Meters.
> >
> > We have an HFW 35C (2.4-6 GHz) HF Analyzer. It's brand new and came
> > from an authorized dealer. This is the second one of this unit we
> > have tried. It has a calibration problem (I assume that's what it
> > is). In the "Fine" range selection, and in the "Peak" setting, it's
> > display does not read lower than 00.4 uW/m2.
> >
> > It appears as though it has calibrated itself (or rather, lost it's
> > calibration), and is using this as it's "zero point", instead of
> > actually displaying 00.0 uW/m2. Occasionally it goes to 00.3 uW/m2,
> > but only for a second, then it jumps back up to 00.4.
> >
> > If I set the audio analysis to "click" (the highest position for the
> > switch), it makes it's clicking noise, but just sporadically, and the
> > numbers don't change.
> >
> > It DOES respond to sources of RF (the numbers on the display go up,
> > and the audio responds correctly), and then it always goes back to
> > 00.4 when the RF source is turned off.
> >
> > To make sure it's not the ambient RF (this house seems quite good),
> > I've tried disconnecting the antenna from the meter, covering the
> > antenna with foil and RF shielding fabric, even covering the main unit
> > with foil...and it still shows 00.4 uw/m2, and makes that same,
> > infrequent "clicking" noise.
> >
> > In "Average" mode, it behaves exactly the same way as I've described
> > above, except it's "zero point" seems to be set at 00.1 uW/m2.
> >
> > This is most puzzling and a bit frustrating, too. The first time we
> > tried this meter, it was loaned to us, and had been through quite a
> > lot of use, and it also had a calibration problem, except it seemed
> > stuck at 1.4 uW/m2, and this zero point would then get stuck at other
> > zero points when exposed to higher frequencies. So strange!
> >
> > I would expect a meter that costs this much (I know it's not a fully
> > "professional" 20, 000 dollar unit, but for us it's a LOT of money) to
> > at least be calibrated correctly.
> >
> > Has anyone ever experienced this, and can you offer any solutions on
> > how to fix this(other than sending it all the way back to Germany)?
> > Our Canadian supplier is on vacation.
> >
> > Thanks for any help!
> >
> > Regards,
> >
> > R.
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>
>
>

>
> All meters do work within their tolerances.
>
> 00.4 uW/m2 is not bad.
>
> The clicking audio analysis should be avoided, and has no serious use,
> except when you cannot read on the display.
>
> So, you should not bother, and take it for granted.
>
> The point is, that one may measure sources that are between 2.4 and

> For that, the meter should read values much higher than 1 uW/m2.
>
> Greetings,
> Charles Claessens
> member Verband Baubiologie
> www.milieuziektes.nl
> www.milieuziektes.be
> www.hetbitje.nl
> checked by Bitdefender
>
>
>
> ----- Original Message -----
> From: "rticleone" <rticleone@...>
> To: <[hidden email]>
> Sent: Thursday, February 21, 2008 17:47
> Subject: [eSens] Gigahertz Solutions calibration problem...suggestions?
>
>
> > Hi everyone who may have experience with the Gigahertz Solutions
> > series of RF Meters.
> >
> > We have an HFW 35C (2.4-6 GHz) HF Analyzer. It's brand new and came
> > from an authorized dealer. This is the second one of this unit we
> > have tried. It has a calibration problem (I assume that's what it
> > is). In the "Fine" range selection, and in the "Peak" setting, it's
> > display does not read lower than 00.4 uW/m2.
> >
> > It appears as though it has calibrated itself (or rather, lost it's
> > calibration), and is using this as it's "zero point", instead of
> > actually displaying 00.0 uW/m2. Occasionally it goes to 00.3 uW/m2,
> > but only for a second, then it jumps back up to 00.4.
> >
> > If I set the audio analysis to "click" (the highest position for the
> > switch), it makes it's clicking noise, but just sporadically, and the
> > numbers don't change.
> >
> > It DOES respond to sources of RF (the numbers on the display go up,
> > and the audio responds correctly), and then it always goes back to
> > 00.4 when the RF source is turned off.
> >
> > To make sure it's not the ambient RF (this house seems quite good),
> > I've tried disconnecting the antenna from the meter, covering the
> > antenna with foil and RF shielding fabric, even covering the main unit
> > with foil...and it still shows 00.4 uw/m2, and makes that same,
> > infrequent "clicking" noise.
> >
> > In "Average" mode, it behaves exactly the same way as I've described
> > above, except it's "zero point" seems to be set at 00.1 uW/m2.
> >
> > This is most puzzling and a bit frustrating, too. The first time we
> > tried this meter, it was loaned to us, and had been through quite a
> > lot of use, and it also had a calibration problem, except it seemed
> > stuck at 1.4 uW/m2, and this zero point would then get stuck at other
> > zero points when exposed to higher frequencies. So strange!
> >
> > I would expect a meter that costs this much (I know it's not a fully
> > "professional" 20, 000 dollar unit, but for us it's a LOT of money) to
> > at least be calibrated correctly.
> >
> > Has anyone ever experienced this, and can you offer any solutions on
> > how to fix this(other than sending it all the way back to Germany)?
> > Our Canadian supplier is on vacation.
> >
> > Thanks for any help!
> >
> > Regards,
> >
> > R.
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>