Agilent Technologies FieldFox N9912A, User Manual

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74 N9912A FieldFox User’s Guide
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.
When RF Attenuation set to Auto , the RF Attenuation is coupled to Reference
Level.
How to set Scale
Press
Scale / Amptd
. Then choose from the following:
 Scale Type [current setting]