Hi Peter,
I went through a similar problem (not exactly the same, but the error was the same) and was able to fix it by an internal source auto-calibration.
Please, check my WEB at for more information about what I did and the results. If you have any doubt, just ask :-)
I hope it helps!
Regards,
JOSE
At 09:54 31/08/2011, you wrote:
hi group I have a HP8753C analyzer option 6 (6Ghz) that has a HP85047 testset. I get the following error when power on. No IF found check R input levelPhase lock lost when I se my display I have not strait line under 90Mhz. There is like noise on the line there. I did some tests in CW mode and se I loose my phase lock going under 87Mhz. Looking on the Cw signal with a spectrumanalyzer I se a very unstable signal. So when going below 87Mhz the display say Phase-lock lost. Going above make a stable frequency signal. Measurering the power out of the source (level set to 0dBm out say around -11dBm but that is after a loss of 6dB in a powersplitter (hp11667). so output od source is around -5dBm measured at 1Ghz. Level is flat over the range. What can be the root course for that problem. Best regards Peter Hansen OZ1LPR
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73 EB5AGV - JOSE V. GAVILA - IM99sm La Canyada - Valencia(SPAIN)
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