Sent from my T-Mobile 4G LTE Device

From: [email protected] <[email protected]> On Behalf Of Radu Bogdan Dicher via groups.io
Sent: Saturday, March 12, 2022 9:16 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP detector

Thank you, Lothar, thank you, n8zmTWH. Particularly the excerpt from the cut sheet;?what I was able to find out before was always catalog data (not a specific?datasheet), and the Vp-p was not mentioned there. I've never seen both in relation to this unit.?

This is cut from an HP doc I found online, maybe the same one you have. Note that it says 3 V RMS, and (4.2 V pk). Other items in that line were rated in mW, so ignore that here.

?

From: HP-Agilent-Keysiht-equipment@group <[email protected]> On Behalf Of Radu Bogdan Dicher
Sent: Saturday, March 12, 2022 9:19 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP detector

?

Back to this topic, as I've finally acquired an HP 8471A and want to make sure I'm not frying it during my first use.

The maximum levels allowed are specified at "3Vrms" "peak or average" - particularly the latter confuses me. How can this number, while being presented as "RMS," be both average and peak? Leaving aside for a moment different waveforms than sine. To me, those numbers are never the "same." For instance, I am outputting signal from this Wavetek 1002 at +13dBm which, for better or worse, shows at the high impedance input of my HP54522A (@ 250MHz) as about 1.65Vrms/4.70Vp-p. Is this too much for the HP8471A?

I am intentionally not loading the signal with 50 ohm to artificially keep it as high as possible for a worst case scenario calculation. I assume the detector would "see" less volts as it's a 50ohm input device.?

I guess how this number would make sense to me would be something like - Vp-p should never exceed this many volts, regardless of the waveform input. But I am also not sure what is the exact burnout mechanism of failure for these.?

Thank you,
Radu.?