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8664A Sweep Gen Calibration Error 2.129,310 MW Loop (Must do MW Loop Adj)

Question asked by dkozicki on Nov 6, 2013
Latest reply on Nov 9, 2013 by dkozicki
Hi,

My 8664A Sweep Gen shows Calibration Error 2,129,310: MW Loop (Must do MW Loop Adj).  There are instructions for this procedure in manual 08645-90145 (HP 8664a Performance Signal Generator Assembly Level Repair) on page 3-2 'MW LOOP Self-Cal Adjustment'.  The procedure uses SPECIAL 340, SPECIAL 341, and SPECIAL 342 functions.  The problem is the 8664A claims there are no 340, 341 or 342 Special Functions.  The calibration SPECIAL Functions don't seem to be it the instruments EPROMs.  I've tried the 'MW LOOP Self-Cal Adjustment' procedure using firmware versions 2.13.0, 3.6.0, and 4.2.2.  The Special Functions don't work in any of these firmware versions. 

Does anyone know where to find the calibration Functions or know a way to calibrate the instrument without them?

Thanks,

Don Kozicki  

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