Keysight Technologies N9321C, User Manual

Page: 112 / 220

Key Reference
Amplitude
104
Amplitude
Press
Amplitude
hardkey to activate the reference level function and
access the amplitude softkey menu. The softkey menu selections
are described as follows:
Ref Level
Sets the reference level. This function is activated when
Amplitude
is pressed. The reference level is the amplitude power or voltage
represented by the top line of the graticule on the display. Setting
the reference level changes the absolute amplitude level (in the
selected amplitude units) of the top graticule line.
Key access:
Amplitude > Ref level
Attenuation
Auto Man
Toggles the input attenuation between
Auto
and
Man
. The
attenuation level can be set in as little as 1 dB increments when
Man
is selected. The analyzer input attenuator is normally coupled
to the reference level control, it reduces the power level of the input
signal at the input mixer. Selecting
Auto
re-couples the attenuator.
Change the attenuation by using the arrow keys, the knob, or the
numeric keypad.
Key access:
Amplitude > Attenuation
Preamp
On Off
(Option P07) Toggles the internal pre-amplifier function between
on and off. Pressing
Preamp (On)
results in a correction being
applied to compensate for the gain of the preamp. Amplitude
readings then represent the signal value at the input connector.
When the preamp is on, a “
PA
” indication appears on the left side of
the display. The preamp operates over a range of 100 kHz to
7 GHz.
Key access:
Amplitude > Preamp
Scale/Div
Sets the logarithmic units per vertical graticule division on the
display. The valid logarithmic units are 1, 2, 5 and 10 dB per
division. The
Scale/Div
function is available only when the
Scale
Type
key is set to
Log
.
Key access:
Amplitude > Scale/Div