Keysight N9923-90001 User’s Guide 149Pulse Measurements Mode – Option 330Pulse Measurement Settings— Frequency Sets the center frequency of the carrier on which pulsemodulation resides. This is used to set amplitude correction of theUSB Power Sensor.How to set TimeSpecify the time over which data will be acquired by the USB Power Sensor.When Trace Graph is selected, Tr 1 is annotated with these values. Time canbe specified using either of the following pairs of values:— Center 1 and Time/d iv 1 Specify the center time and time per division.— Start Time and Time Length Specify the start time and length ofacquisition.— A positive start time indicates a delay after the sensor detects a pulsesignal.— A negative start time displays data that is acquired BEFORE the sensordetects a pulse signal (or T-zero).— Follow each by entering a value using the numeric keypad, the arrows,or the rotary knob.— After using the keypad, select a multiplier key. Learn about multiplierabbreviations in “Multiplier Abbreviations” on page 34.Zoom WindowWhen Trace Graph is selected as the measurement, a secondary Zoom Tracecan be used to view a zoomed portion of Tr 1. When Zoom Window is ON, bluevertical posts appear on Tr 1 to indicate the current start, center, and stoptimes of the zoom window. The zoom window can be scaled using the standardScale settings.How to make Zoom Window settings— Press Measure— Then Trace Graph— Press Trace 6— Then Zoom Window OFF ON— Then choose from the following:— ON Opens the zoom window on the bottom half of the FieldFoxscreen. The window includes the zoomed trace.— OFF Closes the zoom window.— Zoom Center While monitoring the T within the blue vertical posts on Tr 1,enter a value for the center time using the numeric keypad, thearrows, or the rotary knob.
