8- 8 Keysight N9912-90001 User’s Guide
SA (Spectrum Analyzer) Mode
SA Mode Settings
8-
— Use the arrows to increment the channel number by an amount
specified by the Channel Step value (see below).
—Then press Enter
.
Select either Uplink or Downlink Frequencies
Press Chan Direction to toggle between Uplink and Downlink. If either of
these selections is not available, then the selected Radio Standard does not
contain those frequencies.
Channel number X-axis annotation
— Dn indicates Downlink frequencies.
— Up (not shown) indicates Uplink frequencies.
— (−) indicates that the lowest frequency in the channel (128) is at the left
edge of the screen.
— (+) indicates that the highest frequency in the channel (130) is at the right
edge of the screen.
— When Center Channel or Freq Span is specified, the X-axis shows the
Center Freq (Channel) and Frequency Span.
— When Start or Stop Channel is specified, the X-axis shows the Start Freq
(Channel) and Stop Freq (Channel).
Change Channel Step Size (Optional)
This setting allows you to use the arrows to increment the channel
number by the specified value.
—Press Channel Step
.
— Enter a step value using the numeric keypad, the arrows, or the rotary
knob. Then press Enter
.
Scale and Units
Adjust the Y-axis scale to see the relevant portions of the data trace.
The Y-axis is divided into 10 graticules. A Reference Level is shown on the
screen as a solid horizontal bar that can be placed at any graticule.