Keysight Technologies FieldFox A Series, User Manual

Page: 620 / 756

Data Analysis Features
All about Scale Settings
620 Keysight N9927-90001 User’s Guide
All about Scale Settings
How to Use Scale Settings
Adjust the Y-axis scale to see the relevant portions of the data trace. The Y-axis is divided into 10
graticules.
This setting can be changed at any time without affecting calibration accuracy.
How to set Scale
— Press Scale / Amptd .
— Then choose from the following three methods:
1. Autoscale Automatically adjusts the Y-axis to comfortably fit the Minimum and Maximum
amplitude of the trace on the screen.
2. Set Scale, acquisition, and Reference Position:
— Scale Manually enter a scale per division to view specific areas of the trace.
— Ref Level Manually set the value of the reference line. Enter a negative value
by pressing Run/Hold (+/-) either before or after typing a value.
— Ref Pos Manually set the position of the reference line. Values must be
between 0 (TOP line) and 10 (BOTTOM line).
— Range Manually set the absolute power (dBm).
3. Set Top and Bottom graticule values. The scale per division is calculated.
— Top to set the value of the Top graticule.
— Bottom to set the value of the Bottom graticule.
— Enter a negative value by pressing Run/Hold (+/-) either before or after typing
a value.
IMPORTANT! Some of the scale settings do not apply to all of the modes.
Scale annotation on the FieldFox screen
Reference Line = red arrow
Ref Level = -40 dB
Ref Position = 1
Scale = 2 dB per division