150 Keysig ht N9923-90001 User’s GuidePulse Measurements Mode – Option 330Pulse Measurement Settings— Zoom Time/d iv While monitoring the blue vertical posts on the primarytrace, enter a value for the zoom window span using the numeric keypad,the arrows, or the rotary knob.— Trace 1 Press to select Tr 1. This can also be done by using thearrows. Select a trace before making trace settings, such as Scale.— Zoom Trace Press to select the zoom trace.ScaleFor Meter-style measurements, learn how to set Scale, Relative and OffsetPower, display Units, and Resolution beginning in “Scale” on page 150.How to set Scale for Trace Graph measurements— Select a trace to scale using the arrows.— Press Scale / Amptd— Then choose from the following methods:— Autoscale Automatically adjusts the Y-axis to comfortably fit the Min andMax amplitude of the trace on the screen.— Set Scale, Reference Level, and Reference Position:— Scale Manually enter a scale per d ivision to view specific areas ofthe trace.— Ref Level Manually set the value of the reference line. Enter anegative value by pressing Run/Hold (+/-) either before or aftertyping a value.— Ref Pos Manually set the position of the reference line. Values mustbe between 0 (TOP line) and 10 (BOTTOM line).— Offset ON Enable Offset. When only trace 1 is visible, Offset ONappears to the left of the trace.— Offset Val Enter a value by which all amplitude values will be offset.This can have the effect of virtually removing a component from themeasurement path. A positive value compensates for a componentwith loss. A negative value compensates for a component with gain.Offset values are limited to +/- 100 dB.AveragingAveraging helps to reduce the effects of random noise on a measurement. Themore measurements that are averaged, the greater the amount of noisereduction. Averaging is allowed for all pulse measurements.
