Technical data

26 Chapter 2
Analyzer List Sequencer Parameter Definitions
Acquisition Parameters
Analyzer List Sequencer Parameter
Definitions
8: Instrument Gain Type
This parameter specifies one of three possible settings which control the input gain of the test set (LOW,
ZERO, or HIGH).
NOTE This sequence parameter is used by some Agilent models for which Auto Set RF Levels
can be on or off. For E6640A, Auto Set RF Levels is always on, and the test set
automatically selects this setting for the acquisition, so this parameter is ignored by the
sequencer.
9: Transition Time
This parameter specifies a settling-time period which is required between acquisitions, in ms. This
period begins after the time set by the Acquisition Duration parameter, and allows enough time for any
power and frequency changes which are needed for the next acquisition.
NOTE Although different time units can be used in setting transition time from the front panel,
the parameter value as entered in the sequence is always in ms.
The transition time needed depends on which acquisition parameters are changing between acquisitions.
In most situations, the following suggested values provide adequate transition time.
Changes to instrument gain require a 0.02 ms transition.
Within-band frequency changes require a 0.3 ms transition.
Cross-band frequency changes require a 1 ms transition. The bands are:
• Frequency Band 1: -0.08 GHz to 0.6075 GHz
• Frequency Band 2: 0.5075 GHz to 2.1775 GHz
• Frequency Band 3: 2.0775 GHz to 3.6 GHz
If necessary, add more time to allow for the device under test to change states. If the value entered is
insufficient for the power and frequency changes involved, the sequence will generate an error message
asking for more transition time.
The key path for setting the Transition Time from the front panel menus is:
[Meas Setup], Acquisition Setup, Transition Time