Anritsu S331C - Manual (Page 27)

AMPLITUDE Displays the amplitude or scale menu depending on the measurement mode.
Amplitude
Menu Provides for changing the display scale. Selected values may be changed using
the Up/Down arrow key or keypad.
Choosing AMPLITUDE in FREQ or DTF measurement modes causes the soft
keys, below, to be displayed and the corresponding values to be shown in the
message area.
q TOP — Opens the top parameter for data entry and provides for setting the
top scale value. Press ENTER when data entry is complete.
q BOTTOM — Opens the bottom parameter for data entry and provides for set-
ting the bottom scale value. Press ENTER when data entry is complete.
Choosing AMPLITUDE in SPECTRUM ANALYZER mode causes the soft keys,
below, to be displayed and the corresponding values to be shown in the message
area.
q REF LEVEL — Activates the amplitude reference level function.
q SCALE — Activates the scale function in a 2 through 15 dB logarithmic am-
plitude scale.
q ATTEN — Sets the Anritsu input attenuator so that it is either coupled auto-
matically to the reference level ( AUTO ) or manually adjustable ( MANUAL ).
q UNITS — Choose from the menu of amplitude related units. Selection of
dBm sets absolute decibels relative to 1 mW as the amplitude unit. Selection
of dBV, dBmV or dB
mV sets absolute decibels relative to 1 volt, 1 millivolt,
or 1 microvolt respectively as the amplitude unit.
2-12
Chapter 2 Functions and Operations