HP 8753E manual Key Definitions

deflnes the standard type as a short used for calibrating reflection measurements Shorts are assigned a terminal impedance of 0 ohms, but delay and loss offsets may still be added.

is used to specify the subsweep in frequency steps instead of number of points. Changing the start frequency, stop frequency, span, or number of points may change the step size. Changing the step size may change the number of points and stop frequency in start/stop/step mode; or the frequency span in center/span/step mode. In each case, the frequency span becomes a multiple of the step size.

sets the starting stimulus value of a segment, using entry block controls. The ending stimulus value of the segment is defmed by the start of the next line segment. No more than one segment can be defined over the same stimulus range.

adds or subtracts an offset in stimulus value. This allows limits already defined to be used for testing in a different stimulus range. Use the entry block controls to specify the offset required.

is used to define the stop frequency of a frequency range. When the (3GJ key is pressed, it becomes the active function. The value is displayed in the active entry area, and can be changed with the knob, step keys, or numeric keypad.

sets the stop frequency of a subsweep.

presents the store sequence to disk menu with a list of sequences that can be stored.

is used to set the frequency of the LC source to sweep.

toggles between automatic and manual sweep time.

presents the sweep type menu, where one of the available types of stimulus sweep can be selected.

reformats a reflection measurement into its equivalent SWR (standing wave ratio) value. SWR is equivalent to (1 +p)/(l-p), where p is the reflection coefficient. Note that the results are valid only for reflection measurements If the SWR format is used for measurements of Sal or SK!, the results are not valid.

presents the system menu.

8-46 Key Definitions