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HP 8558B Analyser Problem - Help Needed
Hi All,
My HP8558B has developed a fault. Could anyone advise? Up to about 4MHz the sweep consists of a distorted 0MHz peak then a sloping, noise-free, baseline. Above 4MHz the analyser works fine At a Reference Level switch setting of -30dB there is about one division of noise nad signal appear as expected The distortion of the 0MHz peak and the slope of the 0 to 4MHz section of the sweep varies with the setting of the Reference Level Switch but the actual gain settings seem to be correct, once you are above 4MHz. Also odd single spikes appear in this region at different Ref Level settings Anything else you need to know? TIA John |
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