AnsweredAssumed Answered

vrf HP8563E threshold power bit

Question asked by VRFuser on Feb 2, 2002
Hi Dan,

I can't bring you to the finish line, but almost.
You should make used of the video trigger, video trigger level and single sweep mode.
I dont have the HP856x manual in reach, but I am sure there is a possibility of getting
a interrupt from the SA when sweep is finished.

Kjeld Alexander
Denmark

----- Original Message -----
From: "dan besgrove" <dd_besgrove@hotmail.com>
To: <vrf@lvld.agilent.com>
Sent: Sunday, February 03, 2002 12:18 AM
Subject: vrf HP8563E threshold power bit


> Hi,
> I have an HP8563E spectrum analyser (SA) which I control over a short length
> of GPIB cable with a fast PC running VEE 5. I use it to continuously monitor
> the output from a transmitter. The transmitter's signal strength goes up and
> down over a period of time.
> I wish to set the SA up with typical RBW, sweep time, span, etc. and monitor
> when my transmitter's power goes above a certain amplitude on the SA (say
> -50dBm). I get the impression from the manual that a trigger can be obtained
> when this happens (but only an external one). Is there a way to register
> this through software by using a status bit check on the status register ? I
> don't particularly want to continuously ask the SA for power values from the
> PC and use the PC to compare power readings (this would be wasteful).
> Do I have to wait for a sweep to finish ?
> Can frequency and power values be recorded in the SA at each point the power
> rises above a threshold ?
> I use VEE to read the status register for end of sweep bit. So hopefully
> there's a bit for threshold excursions.
>
> Hope this all makes sense.
> Any feedback would be appreciated.
>
> Dan Besgrove
> dd_besgrove@hotmail.com
>
>
>
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