Key Reference
Amplitude
102
Amplitude
Press Amplitude hardkey to activate the reference level
function and access the amplitude softkey menu. The softkey
menu selections are described as follows:
Ref Level Sets the reference level. This function is activated when
Amplitude is pressed. The reference level is the amplitude
power or voltage represented by the top line of the graticule
on the display. Setting the reference level changes the
absolute amplitude level (in the selected amplitude units) of
the top graticule line.
Key access: Ampiltude > Ref level
Attenuation
Auto Man
Toggles the input attenuation between Auto and Man. The
attenuation level can be set in as little as 1 dB increments
when Man is selected. The analyzer input attenuator is
normally coupled to the reference level control, it reduces
the power level of the input signal at the input mixer.
Selecting Auto re- couples the attenuator. Change the
attenuation by using the arrow keys, the knob, or the
numeric keypad.
Key access: Ampiltude > Attenuation
Preamp
On Off
(Option P07) Toggles the internal pre- amplifier function
between on and off. Pressing Preamp (On) results in a
correction being applied to compensate for the gain of the
preamp. Amplitude readings then represent the signal value
at the input connector. When the preamp is on, a “PA”
indication appears on the left side of the display. The
preamp operates over a range of 100 kHz to 7 GHz.
Key access: Ampiltude > Preamp
Scale/Div Sets the logarithmic units per vertical graticule division on
the display. The valid logarithmic units are 1, 2, 5 and 10
dB per division. The Scale/Div function is available only
when the Scale Type key is set to Log.
Key access: Ampiltude > Scale/Div
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