Thanks Mark, ya I did all that but did just see this so I will try next.
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Instrument firmware expects the cal output signal to be 300 MHz ± 2 MHz.Sometimestheinstrument default data is not able to tune the cal signal within this range and a “cal signal not found” message may appear on screen. Perform a cal output bypass check by pressing Frequency,-37, Hz, Cal, Cal Freq. This will bypass the cal check and start by calibrating the sweep ramp.
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Andrew
KB2LMN