Protek A434L Operating Manual page 30

«Numeric & specific
function» key
«0»...«9», «.» keys
...
«±» key
«Auto Scale» key
30
Multi keys operate as follows when a user
is prompted to input values by pop-up
window.
 Numeric keys from 0 to 9 are used
to input user setting numbers.
 The plus/minus (+/-) key is used to
assign positive or negative
numbers in the user settings.
 The period key (.) is used to input
numbers with decimal points.
Multi keys are used in VSWR, DTF, and
Cable Loss measurement mode. Unless
otherwise specified, multi keys do not
support Power Meter mode.
«0»...«9», numeric keys and decimal
point used for entry of decimal numbers at
the cursor location.
«±» key is used to change the sign of a
decimal number.
«Auto Scale» The instrument can
automatically set the scale to the
minimum and maximum values of a
measurement on the Y-axis of the
graph for optimum display of the
traces. Every time AUTO SCALE key is
pressed, the top and bottom scales
are set to the minimum and maximum
values with margin on the Y-axis of
the screen display.