Agilent Technologies InfiniiVision 4000 X-Series Programmer's Manual page 364

17
:FUNCtion<m> Commands
:FUNCtion<m>:SOURce1
Command Syntax
:FUNCtion<m>:SOURce1 <value>
<m> ::= 1-4 in NR1 format
<value> ::= {CHANnel<n> | FUNCtion<c> | MATH<c> | BUS<b>}
<n> ::= 1 to (# analog channels) in NR1 format
<c> ::= {1 | 2 | 3}, must be lower than <m>
<b> ::= {1 | 2}
The :FUNCtion<m>:SOURce1 command is used for any
:FUNCtion<m>:OPERation selection. This command selects the first source
for the operator math functions or the single source for the transform
functions, filter functions, or visualization functions.
The FUNCtion<c> or MATH<c> parameters are available for the transform
functions, filter functions, and the magnify visualization function (see
"Introduction to :FUNCtion<m> Commands"
lower than <m>.
In other words, higher math functions can operate on lower math
functions when using operators other than the simple arithmetic
operations (+, - , *, /). For example, if :FUNCtion1:OPERation is a
SUBTract of CHANnel1 and CHANnel2, the :FUNCtion2:OPERation could
be set up as a FFT operation on the FUNCtion1 source. These are called
cascaded math functions.
To cascade math functions, select the lower math function using the
:FUNCtion<m>:SOURce1 command.
When cascading math functions, to get the most accurate results, be sure
to vertically scale lower math functions so that their waveforms take up
the full screen without being clipped.
The BUS<m> parameter is available for the bus charting visualization
functions.
Another shorthand notation for SOURce1 in this command/query (besides SOUR1) is
N O T E
SOUR.
Query Syntax
:FUNCtion<m>:SOURce1?
The :FUNCtion<m>:SOURce1? query returns the current source1 for
function operations.
Return Format
<value><NL>
364
(see page 1208)
Agilent InfiniiVision 4000 X-Series Oscilloscopes Programmer's Guide
on page 340) when <c> is