68 Chapter 2
Front-Panel Key Reference
AMPLITUDE Y Scale
Delete Point
Allows you to delete the
amplitude-correction data for the
currently selected point. The prompt If
you are sure, press key again to
delete will appear on the display.
Pressing
Delete Point again will delete
the point and adjust all of the point
numbers as appropriate.
Key Access:
AMPLITUDE Y Scale, More,
Corrections
, User, Edit
Delete Correction
Allows you to clear all data from the
selected amplitude-correction set. The
prompt If you are sure, press key
again to delete will appear on the
display. Pressing
Delete again will
delete the correction set.
Key Access:
AMPLITUDE Y Scale, More,
Corrections, User
Freq Interp
Log Lin
Allows you to determine how trace values are computed
between points in a correction table. If the linear mode
is selected, a straight line is used between points in a
correction table. If the logarithmic mode is selected,
frequency values between points are computed by first
taking the logarithm of both table values and the
intermediate value.
Key Access:
AMPLITUDE Y Scale, More, Corrections, More
Delete all Corrections
Allows you to delete all amplitude-correction sets.
Key Access:
AMPLITUDE Y Scale, More, Corrections, More
Ext Amp Gain
Adds a positive or negative preamplifier gain value, which is subtracted
from the displayed signal. (Use negative values for gain and positive
values for loss.) The function is similar to the
Ref Lvl Offset function,
however with the
Ext Amp Gain function, the attenuation may be
changed depending on the preamplifier gain entered. A preamplifier
gain offset is used for measurements that require an external
preamplifier or long cables. The offset is subtracted from the amplitude
readout so that the displayed signal level represents the signal level at
the input of the preamplifier. The preamplifier gain offset is displayed
at the top of the screen and is removed by entering zero. The
preamplifier gain offset can only be entered using the numeric keypad.
The preamplifier gain value is not affected by an instrument preset or a
power cycle.
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