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| Siglent SDG2042x high amplitude issue |
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| W4PJB:
Hi All, I'm hoping someone can point me in the right direction troubleshooting a high amplitude issue on my new, unmodified SDG2042x. I've set the generator to 1khz sine wave, 0.0 dBm. On my oscilloscope, I'm reading roughly 1.26Vpp, which translates to 6 dBm @ 50 ohms. That number is backed up by my Keithley 2000, which is reading right around 6 dBm @ 50 ohms reference. If I go to the "HighLevel" menu, there is a value of 316.3 mV, and if I zero that, my meter goes to 0.0 dBm, but switching back to "Amplitude" shows the generator also entered a value of -6.021 dBm into the "Amplitude", with an "Offset" of -158.1 mV. What am I missing here? Why is there always a 6.0 dBm offset being added to my output at all times? Am I missing a parameter somewhere? |
| W4PJB:
Photo #3, hit the attachment limit on my first post. |
| Grandchuck:
Output based on 50 ohm load? |
| W4PJB:
--- Quote from: Grandchuck on May 08, 2024, 02:29:07 pm ---Output based on 50 ohm load? --- End quote --- Yes, the SDG2042X will not allow you to set output by dBm until an output impedance is specified. |
| Grandchuck:
Is the scope giving a 50 ohm load? |
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