5 - 48

FUNCTION REFERENCE

The following measurements are available:

volt:

dc, rms, min peak, max peak, pk-pk, low level, high level, overshoot

 

(positive and negative), preshoot (positive and negative)

time:

frequency, period, pulse width, rise time, fall time, duty cycle

delay:

channel to channel on leading or trailing edges

Refer to the functions TIME MEASUREMENT, VOLT MEASUREMENT, and DELAY MEASUREMENT for more information.

Execution of these measurements can also be controlled by pressing the command switch on the measuring probe in the TOUCH, HOLD & MEASUREmode. (Refer to the appropriate function for more information.)

Appendix E gives the complete menu structure of the MEASURE menu.

All calculated measurements are made using the HISTOGRAM method. The HISTOGRAM method is used to assure that measurements on signals with distortion, overshoot, ringing, or noise, establish the most probable signal levels as references for the 0 % and 100 % amplitude levels.

The next figure shows all parameters used in this method.

 

 

MAX

 

 

HIGH

1st DISTAL

2nd DISTAL

90%

3rd DISTAL

1st MESIAL

2nd MESIAL

50%

3rd MESIAL

1st PROXIMAL

2nd PROXIMAL

3rd PROXIMAL

 

 

10%

 

 

LOW

 

 

MIN

 

 

ST6743

All calculated measurements are made following a fixed sequence:

1.Using the HISTOGRAM algorithm, determine the HIGH-LOW levels and the MIN-MAX levels. These parameters are used to define the 0% and 100% voltage levels of the signal.

2.Calculate the MESIAL, DISTAL, and PROXIMAL levels. These voltage levels are derived from the HIGH and LOW.

Page 168
Image 168
Fluke PM3370B user manual Following measurements are available, Volt, Positive and negative, preshoot positive and negative