Fluke A20M-AF ユーザーズマニュアル

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3. OPERATION 
 
Page 33 
© 2007 DH Instruments, a Fluke Company 
The Average DISPLAY has a second screen that allows the instantaneous 
pressure readings to be viewed while an averaging cycle is running.   
The instantaneous Average screen is: 
1.  Instantaneous pressure values at RPM4’s 
normal update rate. 
2. 
Current rate of change of pressure in active 
pressure unit/second. 
3. 
Countdown in seconds until completion of on-
going averaging period. 
    
 
 3001.51 psi a    Hi 
R 0.01         18Avg 
        
                     
 
 
The  [+/-] key toggles between the main run Average screen and the 
instantaneous values Average screen. 
 
  Pressing [ENT] while in the Average DISPLAY aborts the current averaging 
period and causes a new one to begin.  [ENT] can thus be use to trigger a new 
averaging period on demand. 
 
  In the Average DISPLAY the Ready/Not Ready indication applies to the result 
of the previous averaging period (see Section 3.2.1).   Ready indicates that all 
readings during the previous averaging period met the stability criterion.  Not Ready 
indicates that one or more readings were outside of the stability criterion. 
 
  Changing the pressure unit of measure, measurement mode or range while the 
averaging screen is active, starts a new averaging period. 
 
  To go to a DISPLAY other than Average, press [DISPLAY] and make a new 
DISPLAY choice (see Section 3.3.6). 
 
3.3.6.2 
Rate 
  PURPOSE 
To activate the Rate DISPLAY. 
 
  See Section 3.3.6,  Principle. 
 
  The AutoTest function (see Section 3.3.10) to AutoRange RPM4 based on DUT 
characteristics and run an automated test sequence is accessed by pressing [ENT] 
from the Rate run screen.