YOKOGAWA FG410, User Manual

Page: 53 / 83

5.1 Generation of Standard Waveform and Numerical Expression Waveform
e) Built-in fun
ctions
The functions shown in “Table 5-4 Built-in Functions” can be used in the numerical expression
input section
[Y=] in the ARB Edit .
Table 5-4 Built-in Functions
Function Name Number of
Arguments
Description
sin (expression) 1 Sine, expression = Phase (radian)
cos(expression) 1 Cosine, expression = Phase (radian)
tan(expression) 1 Tangent, expression = Phase (radian)
atn(expression) 1 Arctangent, result = Radian
sqr(expression) 1 √
exp(expression) 1 Index e
x
log(expression) 1 Natural logarithm
log10(expression) 1 Common logarithm
power(expression_1,
expression_2)
2 Absolute value of complex vector, Expression 1 = Real
number part, Expression 2 = Imaginary number part
phase(expression_1,
expression_2)
2 Argument of complex vector, Expression 1 = Real number
part, Expression 2 = Imaginary number part
tri(expression_1,
expression_2)
2 Triangular wave, Expression 1 = Phase (radian), Expression 2
= Slope [0:100]
sqw(expression_1,
expression_2,expression_3)
3 Square wave, Expression 1 = Phase (radian), Expression 2 =
Duty ratio [0:100], Expression 3 = Displacement [0:100]
rnd() 0 Noise waveform
f) Inter-waveform numerical expression examples
Some sample inter-waveform numerical expressions are shown below.
In an example where there is only one page, the range is the whole horizontal axis range and
description is omitted.
• One cycle of sine wave (horizontal axis unit: addresses 0 to 524288, vertical axis unit: data
±32767)
Page 1
[Constant] [s=2*pi;] [Y=] [sin(x*s)]
• One cycle of sine wave (horizontal axis: user unit 0 to 1, vertical axis: user unit − 1 to +1)
Page 1 [Constant] [fs=32767;] [Y=] [fs*sin(x*s)]
[s=2*pi/524288;]
← 524288 addresses are regarded as 2 π .
• One cycle of sine wave (horizontal axis unit: time 0 to 1 ms, vertical axis unit: voltage ±10V)
Page 1 [Constant] [fs=10;] [Y=] [fs*sin(x*s)]
[s=2*pi/1e-3;]
← 1 ms is regarded as 2 π .
• One cycle of sine wave (horizontal axis: user unit 0 to 6.283185, vertical axis: user unit − 1 to +1)
Page 1 [Constant] [None] [Y=] [sin(x)]
IM FG410-61EN
5-8