Hello everyone,
I recently received a liberated SSA3021X+, now I'm using it to get into the world of RF.
I seem to have stumbled over a bug though: I connected my SDG6000X to the SVA. It is set to 120 MHz sine @ -20 dBm. This works great.
![Siglent SVA1015X and SVA1032X 1.5, 3.2GHz Spectrum & Vector Network Analyzers 2011895-0](https://www.eevblog.com/forum/index.php?action=dlattach;topic=105612.0;attach=2011898;image)
Then I want to measure harmonics. The automated measurement works great, but only with RBWs >= 30 Hz. If I set it to 10 Hz or lower, the fundamental and all harmonics will be displayed with an amplitude that is above the reference level. If I set the reference level to +30 dBm, the fundamental will be measured at +36 dBm, with harmonics up to 6 dB above that. Changing VBW has no influence.
Now the funny thing is that I tried to reproduce it after playing around with a different bug, and then I got an error message "Invalid RBW" when trying to get below 30 Hz. After a reboot, I could go below 30 Hz again and reproduce the issue.
![Siglent SVA1015X and SVA1032X 1.5, 3.2GHz Spectrum & Vector Network Analyzers 2011901-1](https://www.eevblog.com/forum/index.php?action=dlattach;topic=105612.0;attach=2011904;image)
The other bug is: While Harmonics measurement is active, changing the detector from "Pos Peak" to anything else either
* freezes the measurement. The yellow star will appear is it seems to look for the fundamental again, but after it's finished, the graph is not updated anymore. Or:
* will also create "measurements" with extremely high fundamental and harmonic amplitudes. The amplitude even increases with every change between "Neg Pos", "Sample" etc., saturating at almost 200 dBm.
![Siglent SVA1015X and SVA1032X 1.5, 3.2GHz Spectrum & Vector Network Analyzers 2011907-2](https://www.eevblog.com/forum/index.php?action=dlattach;topic=105612.0;attach=2011910;image)
Can anyone reproduce those issues? I'm on firmware 3.2.2.6.0R7.
Does anyone with an SVA1015X have input N-type connectors that become quite hot to the touch after about 30-45 minutes?
Yes, I have that too. But a lot of measurement devices seem to get warm in order to maintain a stable temperature, so I wouldn't worry about it. Just a weird spot to get warm.