Forums › BB Series Discussions › Manual gain and attenuation in zero-span mode
- This topic has 2 replies, 2 voices, and was last updated 7 years, 9 months ago by
andrewclegg.
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andrewcleggParticipantHi,
Is it possible to use manual gain and attenuation in zero-span mode in Spike? I have manual gain/attenuation enabled in the settings menu, but the drop-downs for gain and attenuation in the “Capture Settings” panel in zero-span mode remain grayed out. I’m using a BB60C and Spike 3.1.7.
Thank you.
Andy
AndrewModeratorHi Andy,
Currently, it cannot be controlled in zero-span mode. It was possible at one point, which is why the controls exist. They will likely be removed in a future software update.
The Input Pwr setting will control the sensitivity of the BB60C. 0dBm being lowest sensitivity, -50dBm being the highest sensitivity. (in ~5dB steps) We suggest to set the Input Pwr setting to highest power you expect + 5dB. The displayed reference level is not tied to the Input Pwr as in sweep mode, so you can control the two independently.
It might be in a future update where you can set manual gain/atten globally, so it doesn’t need to be set in each mode. Maybe in a dialog that has controls relevant only to that receiver.
Let me know if you have further questions or comments.
Regards,
Andrew
andrewcleggParticipantAndrew —
Thanks much for the explanation.
Andy
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