HP 8591C Instrukcja Użytkownika Pobierz pdf (Strona 290)

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Spectrum Analyzer Mode Key Descriptions

Spectrum Analyzer Mode Functions

ANALOG+

OFF

turns on the analog+ display mode. This is a digital

implementation of an analog display, combining the

advantages of both types of displays. The display is made up

of 401 horizontal points or trace elements. In the analog+

display mode each trace element can display from 1 to 40

dots, or measurements.

Pressing ANALOG+ ON OFF makes dot density the active

function. The dot density function sets the desired number

of measurements per trace element. Each dot requires

an additional analog-to-digital conversion for each trace

element, so the sweep time can limit the actual number of

dots available. Lengthening the sweep time can increase the

actual dot density.

Markers and marker functions as well as the screen text and

title capabilities of a digital display are available along with

the analog type trace information. Some functions are not

available with analog + display mode. See Table

1 for a list

of functions that are not available with analog+ displays. If

a trace is blanked while using an analog+ display, the data

is permanently blanked and cannot be recalled, even if you

use the view function.

The copy function can be used to provide a printout of the

display. It must be configured to use a printer and not a

plotter. After using other functions, press ANALOG+ ON OFF

to return to the dot density function.

Limit lines can be used to test data in an analog+ display,

but they cannot be displayed.

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