Key Reference
Amplitude
92
Att limit
On Off
Toggles the attenuation limit function between On and Off.
When this softkey is set to On, the reference level will not
exceed the maximum value = (attenuation + 20) dBm.
Key access: > More
Corrections Accesses the corrections submenu to enable the corrections
function for amplitude compensation. The amplitude
correction is used to compensate the gain/attenuation from
antenna/cable. Please refer to the procedures below to use
the amplitude correction function.
1 Press [Amplitude] > {More} > {Corrections} to acess the
correction function.
2 Press {Cable/Antenna/Other/User} to select the corrction
type.
3 Press {Edit} to add the point with frequency and amplitude
offset value.
4 When this editing is completed, press {Corrections On} to
load the correction data. The status will be shown on the
corresponding softkey and set the {Apply Corrections} On,
the amplitude compensation will be applied to the
displayed trace.
Press {Apply Corrections off} to turn off all the corrections.
Key access: > 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
Amplitude
Amplitude
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