HP HP 8753E, Руководство пользователя, Страница: 533 / 699

a sloping limit line segment that is linear with frequency
or other stimulus value, and is continuous to the next stimulus
value and limit. If a sloping line is the
segment it becomes
a flat line terminated at the stop stimulus A sloping line
segment is indicated as SL on the displayed table of limits.
displays a Smith chart format. This is used in reflection
measurements to provide a readout of the data in terms of
impedance.
leads to a menu of special markers for use with a Smith chart
format.
lets you change the value of the smoothing aperture as a
percent of the span. When smoothing aperture is the active
function, its value in stimulus units is displayed below its
percent value in the active entry area.
Smoothing aperture is also used to set the aperture for group
delay measurements Note that the displayed smoothing
aperture is not the group delay aperture unless smoothing is on.
turns the smoothing function on or off for the active channel.
When smoothing is on, the annotation “Smo” is displayed in the
status notations area.
turns the source power on or off. Use this key to restore
power after a power trip has occurred. (See the key
description.)
inserts a space in the title.
is used, along with the key, to define the frequency
range of the stimulus. When the 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 frequency or power span of a about a
center frequency.
presents the special function menu.
leads to the specify class menu. After the standards are
modified, use this key to specify a class to consist of certain
standards
finishes the specify class function and returns to the modify cal
kit menu.
(Option 010 only) is used to specify the parameters of the gate.
allows additional specifications for a user-defined standard.
Features specified in this menu are common to all five types of
standards.
944 Definitions