Instructions

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6 Upgrade Option U02
The capabilities of the instrument can be enhanced by installing the upgrade option U02 which
adds additional firmware to the instrument.
Option U02 can be downloaded from the Aim-TTi website and can be installed by the user
without any requirement to return the instrument to its supplier. Activation of the upgrade is
achieved via an activation code which can be purchased from Aim-TTi, or from our distributors
and agents across the world.
6.1 Additional Functions from Option U02
Installing Option U02 provides the additional functions listed below. Further functions may have
been added since this manual was written - see the Aim-TTi website for up to date information.
6.1.1 Scan Mode
Scan mode is a different mode of operation in which a frequency span can be captured at a
much higher resolution of up to 210,000 points.
See section 8.1 for more information.
6.1.2 Logging of Values, Traces or Screens
The Logging function enables results to be saved into log files in response to a timer or to a
trigger event. Individual amplitude values, complete traces, or full screen images can be saved.
See section 4.7.1 for more information.
6.1.3 Automatic Measurements
Automatic measurement calculation of Channel Power, Adjacent Channel Power Ratio, and
Occupied Bandwidth. See section 4.7.2 for more information.
6.1.4 Modulation Waveform Display
The modulation waveform for AM and FM signals can be displayed. See section 4.2.2 for more
information.
6.1.5 Triggering
The triggering function enables sweeps or logging to be triggered in response to an internal or
external trigger event. The internal trigger event can be generated by the Limits function.
See section 7.8 for more information.
6.1.6 Limit Lines, Limit Patterns & Channel Markers
Limit lines and patterns can be shown on the display, and compared with the trace. They can
be used to trigger a logging event, generate an audible warnings or output a trigger pulse.
Limit lines are simple horizontal lines whereas limit patterns are frequency dependent amplitude
limits that are stored as files. Two limits can be used simultaneously. Channel markers are a
special version of a limit pattern that creates only vertical lines.
See section 7.10 for more information.
6.1.7 Level Offsets
The level offset function enables the level values for the graticule and markers to be corrected
for external attenuation or gain. Compensation can also be made for signals coming from a
75Ω source.