Agilent Technologies X Series Manual page 372

AMPTD Y Scale
Notes
Dependencies
Couplings
Preset
State Saved
Readback line
Initial S/W Revision
Modified at S/W Revision
dBm
Sets the amplitude unit for the selected amplitude scale (log/lin) to dBm.
Key Path
Example
372
The settings of Y Axis Unit and Scale Type, affect how the data is read over
the remote interface. When using the remote interface no unit is returned, so
you must know what the Y axis unit is to interpret the results:
Example 1, set the following:
Scale Type (Log)
Y Axis Unit, dBm
Scale/Div, 1 dB
Ref Level, 10 dBm
This sets the top line to 10 dBm with each vertical division representing 1 dB.
Thus, if a point on trace 1 is on the fifth graticule line from the top, it
represents 5 dBm and will read out remotely as 5.
Example 2, set the following:
Scale Type (Lin)
Y Axis Unit, Volts
Ref Level, 100 mV (10 mV/div)
This sets the top line to 100 mV and the bottom line to 0 V, so each vertical
division represents 10 mV. Thus, if a point on trace 1 is on the fifth graticule
line from the top, it represents 50 mV and will read out remotely as 50.
If an amplitude correction with an Antenna Unit other than
and enabled, then that antenna unit is forced and the key with that unit is the
only Y Axis Unit available. All other Y Axis Unit keys are grayed out.
If an amplitude correction with an Antenna Unit other than
and enabled, and you then turn off that correction or set
, the Y Axis Unit that existed before the Antenna Unit was applied is
No
restored.
The analyzer retains the entered Y Axis Unit separately for both Log and Lin
amplitude scale types
dBm for log scale, V for linear. The true 'preset' value is dBm, since at preset
the Y Scale type is set to logarithmic.
Saved in instrument state
1-of-N selection
Prior to A.02.00
A.02.00, A.04.00
AMPTD Y Scale, Y Axis Unit
UNIT:POW DBM
is applied
None
None is applied
Apply Corrections to