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2445a wide trace until warmup


 

Hi All my 2445A has developed a fault with the horizontal trace on all channels,
There are no error codes,
On switch on from cold the horizontal trace appears wider than normal, the readouts on the graticule are are ok
After about ten minutes warm up it then appears correct ,
Just wondering if any one else has had this fault and hopefully rectified it?
Thanks.......Peter

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