Service Manuals, User Guides, Schematic Diagrams or docs for : Keithley 2001 2001_910_01A

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                                          Firmware Upgrade for Model 2001-M
Keithley Instruments, Inc.
28775 Aurora Road                                             Release Notes
Cleveland, Ohio 44139
(440) 248-0400
www.keithley.com




Average responding RMS
                This firmware upgrade includes an average-responding RMS converter to provide
                average-responding RMS readings (RMS-Average). This new AC type uses the averaging
                AC detector, but multiplies the average of the rectified signal by the following correction
                factor:
                                              
                                          --------- = 1.11
                                                  -
                                          2 2

                When used for a sinusoidal signal, the RMS-Average value is the same as the true RMS
                value. RMS-Average readings for non-sinusoidal signals will not be true RMS.
                Sinusoidal signal 

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