Hi everyone. I usually lurk here more than post, but I thought I'd share a odd behavior of my SVA1015X that's a bit confusing.
I've only recently acquired this unit, and I'm new to spectrum analyzers, so it's very possible this is user error, but I've been looking at reviews of the SSA3021 (as I haven't found too many of the SVA1015X), and those models don't seem to behave this way.
I've noticed that when the tracking generator is ON and NORMALIZE is also on, changing the CT, Start or Stop frequencies seems to cause the SA to rerun the NORMALIZE procedure, effectively cancelling out the current waveform. I am able to consistently reproduce this behavior and I am hoping someone here can clarify where I made a mistake or maybe can confirm the issue.
My setup:
TG Output -> N/BNC converter -> BNC cable -> BNC/N converter -> SA Input
Here's the steps I used to reproduce:
1. I reset the SA by pressing the Preset button. Then I turn on the Tracking Generator by Pressing TG and then ON.
2. I turn on Normalization and set the Normal Ref Level to 20dB. At this point, the trace on the screen is a line at 0dB.
3. I insert a 20dB attenuator inline, on the SA Input side. The screen shows a line at -20dB.
4. I changed to the Frequency menu and change the Center Frequency to 500MHz. The SA redraws the line at 0dB.
5. I try changing the CF to 750MHz (by typing 750Mhz on the keypad). Screen still shows 0dB.
6. I try the Span menu and press the Full Span button. Screen still shows 0dB.
7. I went back to the TG screen to verify that no settings have changed as a result of my testing
I have attached screen captures, but I haven't figured out how to insert them into the body of this post. If I figure it out, I'll update this post.
Does anyone know if this is normal behavior for the SVA1015X?
Thanks
Edit: Added links to photos
Edit1: My firmware version is V2.1.1.1.13