Agilent Technologies E4402B - AMPLITUDE Y Scale Function - Scale and Presel Settings

Chapter 2 57
Front-Panel Key Reference
AMPLITUDE Y Scale
Scale Type
Log Lin
Scales the vertical graticule divisions in logarithmic units when Log is
underlined. Logarithmic units may range from 0.1 to 20 dB per
division. When
Lin is underlined, the vertical divisions are linearly
scaled and the default amplitude units are volts. The top of the display
is set to the reference-level value and the bottom graticule becomes zero
volts. (Each division of the graticule is one-tenth of the reference level
in volts.) Pressing
Scale Type always sets the units specified for the
current amplitude scale. When
Power On is set to Preset and Preset Type
is set to
Factory, pressing Preset or powering on the analyzer sets the
default units.
Key Access:
AMPLITUDE / Y Scale
Presel Center
Agilent E4404B, E4405B, E4407B and E4408B only. Adjusts the
frequency of the preselector filter (above 2.85 GHz) to optimize the
amplitude accuracy at the active marker frequency. With
Input Mixer
(Ext) selected and the Mixer Type set to Presel (preselected), Presel
Center
adjusts the frequency of the external preselector filter to
maximize the amplitude at the active marker frequency. If activated in
a non-preselected band,
Presel Center does nothing.
Preselector center should be used to improve amplitude accuracy for
signals which fall into any one of the harmonic mixing bands. The
harmonic mixing bands Frequency Ranges are:
Key Access:
AMPLITUDE / Y Scale
Presel Adjust
Agilent E4404B, E4405B, E4407B and E4408B only. Allows manual
adjustment of the preselector frequency to optimize its response on the
signal of interest.
By changing the
Presel Adjust, the center of the preselector filter can be
moved in frequency. The signal of interest will appear to change in
amplitude with the frequency response of the preselector filter.
Key Access:
AMPLITUDE / Y Scale
Y Axis Units
Accesses the menu keys that change the amplitude units. Amplitude
units are maintained for both logarithmic and linear modes. The
amplitude units can be changed by pressing
dBm, dBmV, dBµV, dBµA,
Watts
, Volts, and Amps. This key is unavailable when FM Demod and
Demod View are on.
Key Access:
AMPLITUDE Y Scale, More
Band Frequency Range
1 2.85 - 6.7 GHz
2 6.2 - 13.2 GHz
3 12.8 - 19.2 GHz
4 18.7 - 26.5 GHz