Hioki MR8740-50, Инструкция по эксплуатации

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167
Configuring Waveform Calculation Settings
When an expression includes an operator MOV , SLI , DIF , DIF2 , PLEVEL , or ATAN2 (about second
parameter)
The operators above require a comma and second parameter to follow the first parameter, which is
enclosed in parentheses.
Examples of operators and settings
Operator Setting Setting example
MOV (moving average)
SLI
(parallel move)
Specify the number of moving
points.
Setting range
MOV
(moving average): 1 to 5000
SLI : −5000 to 5000
If you omit the second parameter,
the instrument specifies [1] to make
calculations.
To calculate a 10-point moving
average of the CH1 waveform
MOV(CH1,10)
DIF (differential)
DIF2 (2nd-order differential)
Specify a sampling interval for
differentials Normally specify “1.”
Specify a larger number, however,
to monitor the variation in a slowly
changing waveform.
Setting range for DIF and DIF2 : 1
to 5000
If you omit the second parameter,
the instrument specifies [1] to make
calculations.
To calculate differentials of data
acquired across CH2 at intervals
of 20 sampled points.
MOV(CH2,20)
PLEVEL
(level at time) Specify a time from a trigger point.
If you omit the second parameter,
the instrument specifies [0] to make
calculations.
Obtains the level a signal reaches
1 ms after the trigger point
generated from a signal acquired
across CH1-3.
PLEVEL(CH(1,3),0.001)
ATAN2 (2-argument arc tangent) When you type “ ATAN2(y,x) ,”
the instrument calculates the
expression ATAN(y/x) . (p. 170)
If you omit “x,” the instrument
makes calculations supposing
that x equals 1.0. You can specify
“CH,” “Z,” or a constant only at “x.”
No function or expression can be
specified. Not available
To calculate 2-argument arc
tangent of CH1-1 / CH1-2
ATAN2(CH(1,1),CH(1,2))
If a calculation result is overflowing ( OVER )
• The instrument regards a calculation result that falls within the following range as an overflow.
1. Greater than +9.9999E+29
2. Less than −9.9999E+29
• The instrument a9.9999E+29 to positive overflows, and −9.9999E+29 to negative
overflows.
• Trace cursors (A through H) read +9.9999E+29 at a positively overflowing point, and
−9.9999E+29 at a negatively overflowing point.
8
W
aveform Calculation Function