330 Keysight N9915-90020 User’s Guide
Electromagnetic Interference (EMI) Measurements – Option 361
EMI Measurements Mode Settings
——Log Freq AxisX enables/disables the log frequency X-axis.
Disabling the log frequency X-axis, enables the linear
frequency X-axis (Default = ON).
——
CF Step then type a step size value using the numeric keypad,
then select a frequency unit terminator key (Default = Auto).
——Full Span the frequency span changes the instrument’s full
frequency span (frequency span is model & Option dependent).
This softkey is inactive (grayed out), for CISPR Zoom Scan and
APD Statistics, because RF tuning is fixed and Span changes
are not allowed.
For CISPR Band Scan the Full Span varies based on the 6 dB
resolution BW setting:
— Follow each of these, when prompted, by entering a value using the
numeric keypad, the arrows, or the rotary knob.
— When using the arrows, press Enter
. The increment setting of the
arrows is based on the current span.
— After using the keypad, select a multiplier key. Learn more in
Chapter 2,
“Preparing for Initial Use of Your New FieldFox”
and “Multiplier
Abbreviations” on page 46.
Scale and Units
Learn more, refer to “Scale and Units” on page 159.
External Gain
Learn more, refer to “External Gain” on page 160.
If the 6dB Resolution BW is auto-coupled, Full Span changes the span
to match the Full CISPR Band you have selected. Learn more see,
“How
to Set the EMI Measurement Settings (Fast SA Scan, CISPR
Band Scan, CISPR Zoom Scan, and APD Statistics)” on
page 331.
If the 6 dB resolution BW is set to manual, Full Span changes the span
to the maximum span limits described in the table in “Resolution
Bandwidth (Res BW)” on page 336.
EMI Measurements mode defaults to Scale Type: Log.
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