User`s guide

Units menu
Units: Peak/RMS Power Density dBmType dBmReference UserReference Quit
Hot Keys: PWDTR U Q
Peak/RMS Specify whether the data will be displayed in peak or rms units. If you choose
Auto, the units will be the same as the data. SDF files are always peak.
HP 3563A/62A data may be peak or rms.
Power Specify the power of the Y-axis units (volts or volts^2). If you choose Auto, the
displayed unit power is the same as the data unit power.
Density Specifies whether the data will be displayed in density units (/Hz). If Auto is
chosen, then the data will ONLY be shown in density units for PSD data
(i.e. not Power Spectrums). If /Hz is chosen, then spectrum data will be shown in
V/rtHz or V^2/Hz depending on the ‘’Power’’ selection.
dBmType Specify whether the reference impedance used in dBm coordinates is taken from the
data file input impedance (Auto) or the dBmReference is used (Fixed). If the input
impedance from the data file is >= 1 MOhm, then it is ignored and the
dBmReference is used.
dBmReference The reference value used for dBm coordinates (see dBmType for more details).
UserReference A user reference value used for dBm or dB coordinates. It is a magnitude value, so
an entered value of 1.0E-6 would represent 20 * log10 (1.0E-6) =
−120 dB reference (i.e. add 120 dB to the trace values).
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