Vertical Axis Scaling - Agilent Technologies ESA-E Series Programmer's Manual

Default Unit: dB
Remarks: The sum of (reference level offset + reference level) is
clipped to the range –327.6 to 327.6 dB. The maximum
limits are determined by the setting of the first of these
two parameters, within the boundaries of their
individual limits when initially set.
For example, if the reference level is (first) set to
–20 dBm, then the reference level offset can be set to
values of –307.6 dB to 327.6 dB. In the case of a
327.6 dB reference level offset, the resultant reference
level value changes to 307.6 dBm. The reference level
value range can be intially set to values from –149.9 to
55 dBm.
Setting the reference level offset value first yields the
following: If the reference level offset is (first) set to
–30 dB, then the reference level can be set to values of
–327.6 to 25 dBm. The reference level is "clamped" at
25 dBm because its positive value of 55 dBm is reached
at 25 dBm with an offset of –30 dB. Its own positive
amplitude limit applies.
If the reference level offset is (first) set to 30 dB, then
the reference level can be set to values of –327.6 to
85 dBm. Again, the positive amplitude limit of
reference level (alone) is factored in to the resultant
combined limit.
Front Panel
Access:
Amplitude Y Scale, Ref Level Offst

Vertical Axis Scaling

:DISPlay:WINDow:TRACe:Y[:SCALe]:SPACing LINear|LOGarithmic
:DISPlay:WINDow:TRACe:Y[:SCALe]:SPACing?
Specifies the vertical graticule divisions as log or linear units.
Factory Preset
and *RST: Logarithmic
Front Panel
Access:
AMPLITUDE/Y Scale, Scale Type Log Lin
Chapter 5
Language Reference
DISPlay Subsystem
5-45