Keysight P9241, Руководство программиста SCPI

Страница: 376 / 1344

376 Keysight P9241/42/43A Oscilloscopes SCPI Programmer's Guide
17
:FUNCtion<m> Commands
This function uses a Hilbert transform to get the real (in-phase, I) and
imaginary (quadrature, Q) parts of the input signal and then performs a
square root of the sum of the real and imaginary parts to get the
demodulated amplitude envelope waveform.
Filters operate on a single analog channel source or on a lower math function.
• Visualizations:
• MAGNify — Operates on a single analog channel source or on a lower math
function.
• MAXimum — This operator is like the MAXHold operator without the hold.
The maximum vertical values found at each horizontal bucket are used to
build a waveform.
• MINimum — This operator is like the MINHold operator without the hold. The
minimum vertical values found at each horizontal bucket are used to build a
waveform.
• PEAK — The PEAK operator is like the MAXimum operator minus the
MINimum operator. At each horizontal bucket, the minimum vertical values
found are subtracted from the maximum vertical values found to build a
waveform.
• MAXHold — Operates on a single analog channel source or on a lower math
function. The Max Hold (or Max Envelope) operator records the maximum
vertical values found at each horizontal bucket across multiple analysis
cycles and uses those values to build a waveform.
• MINHold — Operates on a single analog channel source or on a lower math
function. The Min Hold (or Min Envelope) operator records the minimum
vertical values found at each horizontal bucket across multiple analysis
cycles and uses those values to build a waveform.
• TRENd — Measurement trend — Operates on a single analog channel source.
The TRENd:NMEasurement command selects the measurement whose trend
you want to measure.
Query Syntax
:FUNCtion<m>:OPERation?
The :FUNCtion<m>:OPERation? query returns the current operation for the
selected function.
Return Format
<operation><NL>
<operation> ::= {ADD | SUBT | MULT | DIV | INT | DIFF | FFT | FFTP
| SQRT | MAGN | ABS | SQU | LN | LOG | EXP | TEN | LOWP | HIGH
| AVER | SMO | ENV | LIN | MAX | MIN | PEAK | MAXH | MINH | TREN}
NOTE
If a math function is on (see :FUNCtion<m>:DISPlay), changing the operator will cause an
automatic vertical scaling of the new math function waveform. If you wait for the operation to
complete (with an *OPC? query for example), then query the math functions's scale, you can
see the vertical scaling that was automatically determined.