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Tek 475A CH1 bandwidth
Hello all,
I have a Tek 475A whose CH1 bandwidth falls off as the input frequency increases. At 200MHz, the vertical amplitude is about half of what it should be. CH2 is working fine. The fault seems to exist no matter what the vertical sensitivity is so I don't think that it's the extenuator, and the 100 and 20MHz bandwidth limiter also appear to be working. Does this fault suggest anything in particular to the experts out there? Thanks! |
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