Agilent Technologies 54503A User's Guide download pdf (Page 185)

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Chapter 4 185

Key Function Descriptions

Key Function Tables

dBµV AMPLITUDE Selects absolute decibels relative to 1 µV as the

amplitude units.

dBmV AMPLITUDE Selects absolute decibels relative to 1 mV as the

amplitude units.

FREQ OFFSET FREQUENCY Adds an offset value to displayed frequency values,

including marker frequency values. The range of the

sweep (that is, the span) is not affected. When this

function is active an F appears on the left edge of the

display.

FREQUENCY — Activates the center frequency (or the start frequency)

and accesses a menu of frequency functions.

FULL SPAN SPAN Sets the spectrum analyzer span to its maximum

frequency range.

HOLD — Holds the active function to its present value, blanks the

softkeys and active function area from the display, and

expands the remaining graticule and annotation.

LAST SPAN SPAN Sets the spectrum analyzer to the previously selected

span.

LINEAR AMPLITUDE Selects the linear amplitude scale.

LOG dB/DIV AMPLITUDE Selects a 1, 2, 5, or 10 dB logarithmic amplitude scale.

MAX MXR LEVEL AMPLITUDE Selects the maximummixer level seen at the input mixer

for signals at or below the reference level.

NORM REF LVL AMPLITUDE Activates the normalized reference level, permitting an

offset to be introduced to the displayed trace.

NORM REF POSN AMPLITUDE Adjusts the normalized reference position.

PRESEL AUTO PK AMPLITUDE Automatically peaks the preselector for the desired

signal on a trace.

PRESEL MAN ADJ AMPLITUDE Permits manual adjustment of the preselector. Peak the

preselector using the data keys, the step keys, or the

knob.

RANGE LVL AMPLITUDE Activates the dynamic range level function and ensures

the displayed range is compression free.

REF LVL AMPLITUDE Activates the reference level function.

REF LVL OFFSET AMPLITUDE Introduces an offset to all amplitude readouts, but does

not change the position of the on-screen trace. When this

function is active, an R appears on the left side of the

display.

Table 4-1 Fundamental Functions

Function Keys Access Key Description

1 ... 184 185 186 ... 716

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