10 Monitor Spectrum Measurement
AMPTD Y Scale
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.
Dependencies If an amplitude correction with an Antenna Unit other than None is applied 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 None is applied and enabled, and you then
turn off that correction or set Apply Corrections to No, the Y Axis Unit that existed before the Antenna
Unit was applied is restored.
Couplings The analyzer retains the entered Y Axis Unit separately for both Log and Lin amplitude scale types
Preset dBm for log scale, V for linear. The true ‘preset’ value is dBm, since at preset the Y Scale type is set to
logarithmic.
State Saved Saved in instrument state
Readback line 1-of-N selection
Initial S/W Revision Prior to A.02.00
Modified at S/W Revision A.02.00, A.04.00, A.11.00
dBm
Sets the amplitude unit for the selected amplitude scale (log/lin) to dBm.
Key Path
AMPTD Y Scale, Y Axis Unit
Example UNIT:POW DBM
Dependencies Grayed out if an Amplitude Correction with an Antenna Unit is ON.
Readback dBm
Initial S/W Revision Prior to A.02.00
Modified at S/W Revision A.02.00
dBmV
Sets the amplitude unit for the selected amplitude scale (log/lin) to dBmV.
Key Path
AMPTD Y Scale, Y Axis Unit
Example UNIT:POW DBMV
EMI Receiver Mode Reference 735
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