Chapter 2 141
Front-Panel Key Reference
Meas Setup
NOTE The measurements described above are those available in SA mode (see
Mode key). Other measurements are available in other modes if an
optional personality is installed.
Burst Width
Auto Man
Sets the burst width parameter to automatic mode (Auto) or manual
mode
(Man).
In
Auto the burst width is automatically calculated based on the
threshold level. For example, if the threshold level is set to 3 dB, the
burst width will be the time between the two 3 dB . This will update
after each sweep, but before any results are calculated. Since the
measurement only measures over the burst width, this will force a
measurement between the 3 dB .
In
Man you can specify the burst width to measure a portion of the
burst. You can enter a fixed-time value in seconds, or specify the burst
width as a percentage of the last measured burst width. If you specify
the burst width as a percentage, the fixed-value time is instantaneously
calculated and displayed on the menu key.
Key Access:
Meas Setup
Optimize
Ref Level
Sets the reference level and attenuator to optimum values based on the
signal present at the input.
Key Access:
Meas Setup, More
Intermod (TOI) Meas Setup Menu Keys
To access the following keys for setting up a third order intercept (TOI)
measurement, press
MEASURE, Intermod (TOI), and then the front-panel
Meas Setup key.
Key Access:
Meas Setup
Avg Number
On Off
Press Avg Number (On) to specify the number of averages used when
calculating the measurement result. The average will be displayed at
the end of each sweep.
Avg Number (Off) disables measurement
averaging.
Key Access:
Meas Setup
Avg Mode
Exp Repeat
Allows you to select the type of termination control used for the
averaging function. This determines the averaging action after the
specified number of measurements (average count) is reached.
Avg Mode has no effect on measurements that are not averaged.
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