Fluke PM-3380B, PM-3390B, PM-3370B Standard Available, Mathematical calculations, Optional

3 - 46 USING THE COMBISCOPE INSTRUMENTS

SENSe

TRACe					CALCulate
CH 1	M1_1	M2_1	M3_1	M50_1	CALCulate[1]
CH 2	M1_2	M2_2	M3_2	M50_2
CH 3	M1_3	M2_3	M3_3	M50_3
CH 4	M1_4	M2_4	M3_4	M50_4	CALCulate2
				CALCulate:FEED "M3_2"

CALCulate2:FEED "M2_4" ST7162

Figure 3.18 Post processing feed definition

3.9.1.2Specify the settings of the post processing function.

When desired, specify the settings of the post processing function to be used. The

following settings can be programmed:
- the filter type of the FFT function		RECTanguler HAMMing HANNing
-	the width of the low-pass filter window	3, 5, 7, .., 39, 41 points
-	the width of the differential window	3, 5, 7, .., 127, 129 points

Example:

Send → CALCulate2:TRANsform:FREQuency:WINDow HAMMing

’Defines the Hamming filter for the FFT process.

3.9.1.3Enable the post processing function.

Enable the desired post processing function by using the :STATe command of the calculate function concerned. The following post processing functions are available:

STANDARD AVAILABLE:
- mathematical calculations	:MATH
- frequency filtering	:FILTer:FREQuency
- frequency domain transformations (FFT)	:TRANsform:FREQuency
OPTIONAL:
- histogram transformation	:TRANsform:HISTogram
- integrating traces	:INTegral
- differentiating traces	:DERivative (alias :DIFFerential)
Example:
Send → CALCulate2:TRANsform:FREQuency:STATe ON		’Enables FFT

The post processing is automatically executed when a trace that is fed into the CALCulate function is changed. If a mathematical function is switched on, the other functions are automatically switched off.