I just acquired an N2796A from the used market, in like new condition. It passes calibration (DSOX 3000T) and 1-2GHz response looks good on another scope (54846A). The attached image however (magenta) shows a significant compensation problem (other scope shows the same). The signal in this case is a 65kHz square wave. The yellow trace is a different probe on same waveform.
Is there any hope for adjustment of this response? Do these later model probes have any response / correction data stored in them so that only a re-programming might fix it?
The 54846A identifies the probe but gets the attenuation wrong so I had to set that manually. The probe then behaved well (except for this compensation problem) at dc and high frequency.
After discussion with Keysight support, it looks like the probe is shot. After further testing, I also discovered that response is fully of hills and valleys and falls off long before it should. There are no repairs available, so the only option is a unit swap ... fair enough but still painfully expensive.