HP 8753E manual Key Definitions 8-l

divides the data by the memory, normalizing the data to the memory, and displays the result. This is useful for ratio comparison of two traces, for instance in measurements of gain or attenuation.

subtracts the memory from the data. The vector subtraction is performed on the complex data. This is appropriate for storing a measured vector error, for example directivity, and later subtracting it from the device measurement.

stores the current active measurement data in the memory of the active channel. It then becomes the memory trace, for use in subsequent math manipulations or display. If a parameter has just been changed and the * status notation is displayed at the left of the display, the data is not stored in memory until a clean sweep has been executed. The gating and smoothing status of the trace are stored with the measurement data.

stores only the measurement data of the device under test to a disk file. The instrument state and calibration are not stored. This is faster than storing with the instrument state, and uses less disk space. It is intended for use in archiving data that will later be used with an external controller, and cannot be read back by the analyzer.

presents the sequencing decision making menu.

decrements the value of the loop counter by 1.

returns all the display color settings back to the factory-set default values that are stored in non-volatile memory.

resets the plotting parameters to their default values.

resets the printing parameters to their default values.

leads to the define save menu. Use this menu to specify the data to be stored on disk in addition to the instrument state.

leads to a sequence of three menus. The first defines which elements are to be plotted and the auto feed state. The second dehnes which pen number is to be used with each of the elements (these are channel dependent.) The third defines the line types (these are channel dependent), plot scale, and plot speed.

leads to the define print menu. This menu defines the printer mode (monochrome or color) and the auto-feed state.

makes the standard number the active function, and brings up the dehne standard menus. The standard number (1 to 8) is an arbitrary reference number used to reference standards while specifying a class.

selects the group delay format, with marker values given in seconds.

defines the standard type as a transmission line of specified length, for calibrating transmission measurements.

Key Definitions 8-l 1