HP 8590 E & L Series Spectrum Analyzers and HP 8591C Cable TV ...

80 OUTPUT 718;"AMPCOR?;"
90 ENTER 718;A$
100 PRINT A$
110' END
Description
AMPCOR Amplitude Correction
Because AMPCOR is ofi “0,O” is displayed.
Use AMPCOR to compensate for frequency-dependent amplitude variations at the spectrum
analyzer input. Up to 79 pairs of frequency-amplitude correction points can be entered. The
frequency values entered must either be equal or in increasing order, or an error condition
results. Whenever AMPCOR is on, the correction values are added to all measurement
results. Executing “AMPCOR ON;” or entering frequency and amplitude corrections, turns
on the amplitude correction factors. Performing an instrument preset (IP) or turning off
the spectrum analyzer sets AMPCOR to OFF. (Setting AMPCOR to OFF does not change the
frequency-amplitude correction factors that have been entered.)
The values of the correction points are applied across the active measurement range. Between
points, the correction values are interpolated. When measuring at frequencies outside the
first and last correction points, these values are used as the correction value. If you do not
want any amplitude correction outside of the first and last correction points, set the amplitude
correction to 0 at the frequencies that are outside of the first and last correction values.
With the Analog + display mode: When the Analog+ display mode is turned on, AMPCOR
applies only one amplitude correction across the displayed frequency span. When the Analog+
display mode is turned on, the amplitude correction for the current center frequency is used
over the entire frequency span.
Amplitude correction factors can be stored in spectrum analyzer memory with the SAVET or
SAVRCLN commands, or on the memory card with the STOR or SAVRCLN commands. The
amplitude correction factors can be edited and viewed with the Amp Cor softkey functions.
Query Response
AMPCOR? returns the frequency and amplitude correction pairs.
frequency amp I i tude
/ \
In-
Returned values are 0,O when AMPCOR is set to OFF
Programming Commands 5-63