Stanford Research Systems SR785, Operating Manual And Programming Reference

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5-74 User Math Commands
SR785 Dynamic Signal Analyzer
User Math Commands
USRF (?) i {, j, k, l, ...}
USRR (?) i {, j, k, l, ...}
USRO (?) i {, j, k, l, ...}
USRS (?) i {, j, k, l, ...}
USRT (?) i {, j, k, l, ...}
USRH (?) i {, j, k, l, ...}
The USRF, USRR, USRO and USRS, USRT and USRH commands define
(query) the user functions for the FFT, Correlation, Octave, Swept Sine, and
Time/Histogram Measurement Groups.
The parameter i selects a function number from 1 to 5.
The parameters j, k, l, ... are integers which are tokens for the available operands
and operations. The tokens are listed below. The letters ‘F’, 'C', ‘O’ and ‘S’, 'Or',
and 'H' indicate in which measurement groups each token is valid (FFT,
Correlation, Octave, Swept Sine, Order, and Histogram).
For example, to define FFT User Function 3 as FFT(1)+FFT(2), the command
USRF 3, 10, -1, 20 is used. If the function cannot be entered, a command
execution error occurs.
Operand/Operation Token Valid in Groups
Mag( -101
F,C,O,S,Or,H
Conj( -102 F,C,O,S,Or,H
Real( -103 F,C,O,S,Or,H
Imag( -104 F,C,O,S,Or,H
Ln( -105 F,C,O,S,Or,H
Exp( -106 F,C,O,S,Or,H
FFT( -107 F,C,Or
FFTu( -108 F,C,Or
IFFT( -109 F,C,Or
Sqrt( -110 F,C,O,S,Or
jOmega( -113 F,C,S
Phase( -114 F,C,O,S,Or,H
Mag
2
( -115 F,C,O,S,Or,H
AWt( -116 F,C,O,S,Or
BWt( -117 F,C,O,S,Or
CWt( -118 F,C,O,S,Or
d/dx( -119 F,C,O,S,Or
GrpDly( -120 F,C,O,S
[X/(1-X)]( -121 F,C,O,S,Or