Hi All,
I encountered some alarming behavior tonight, I am working with an 2-port E8362C, running firmware version, A.09.42.22. Alarming because I'm using a booster amp and it was on at the time. I'm monitoring power with an independent N1913A power meter.
From a user preset with test port power OFF, default power -25 dBm, with power offset of +25 dBm, which puts the source level at -50 dBm, using COM, I created a measurement and then I dabbled with changing the TraceTitle property of the measurement, as soon as I set the title to, "asdfasd," the PNA suddenly turned on the port power, IGNORING my offset. My aforementioned independent power meter was reading ~24 dBm and holding quite steady. Once I triggered a sweep, the power level returned to where I expected it to be. My power offset averages ~25 dBm . Very strange. Glad I didn't blow anything up. Fortunately port 1 was only connected to a U2000A power sensor and not my N4691B ecal module. Yikes.
Everything works as expected, and needed, until I set the trace title property. I wonder if anyone can reproduce this behavior. It seems like a bug. One thing for sure, I won't "dabble" anymore with the booster amp powered up, duh. But the question remains why the power turned on and the power offset was ignored?
Thanks for any help,
Andy
I encountered some alarming behavior tonight, I am working with an 2-port E8362C, running firmware version, A.09.42.22. Alarming because I'm using a booster amp and it was on at the time. I'm monitoring power with an independent N1913A power meter.
From a user preset with test port power OFF, default power -25 dBm, with power offset of +25 dBm, which puts the source level at -50 dBm, using COM, I created a measurement and then I dabbled with changing the TraceTitle property of the measurement, as soon as I set the title to, "asdfasd," the PNA suddenly turned on the port power, IGNORING my offset. My aforementioned independent power meter was reading ~24 dBm and holding quite steady. Once I triggered a sweep, the power level returned to where I expected it to be. My power offset averages ~25 dBm . Very strange. Glad I didn't blow anything up. Fortunately port 1 was only connected to a U2000A power sensor and not my N4691B ecal module. Yikes.
Everything works as expected, and needed, until I set the trace title property. I wonder if anyone can reproduce this behavior. It seems like a bug. One thing for sure, I won't "dabble" anymore with the booster amp powered up, duh. But the question remains why the power turned on and the power offset was ignored?
Thanks for any help,
Andy
I will look into it immediately and post my findings here.
Can you recall your Preset state, then save it as a .csa file and post that here.
Also helpful might be a .csa file after you enter the title.
And does it do the same if you manually type in the title?
I have tried a few things but can't seem to duplicate it yet...so the .csa files would help.