Chapter 4
Front-Panel Key and SCPI Command Reference
Measurement keys
227
Front-Panel Key and SCPI Command
Reference
4.4.6.2.1.4 Ratio Mode
The ratio and previous ratio functions permit any measurement result to be scaled to a reference. The reference may be
either a measurement result or a keyboard entry. The Log/Linear key enables measurement results to be displayed in linear
or logarithmic units. In the Ratio mode, measurements are made in the same way as when not in the Ratio mode, however,
before the result is displayed, the internal controller converts it to ratio. The following equations are used for computing
ratio:
(M/R) * 100 % = % ratio for linear display,
20 * log (M/R) = dB ratio for logarithmic display,
where M is the measurement result and R is the ratio reference.
4.4.6.2.2 PM Deviation Waveform Window
If the waveform window is chosen, the following menu is available.
4.4.6.2.2.1 Scale/Div
Allows you to enter a numeric value to change the vertical display sensitivity.
Key Path:
Amplitude Y Scale
Remote Command: :DISPlay:PMDeviation:RMODe LOG|LINear
:DISPlay:PMDeviation:RMODe?
Preset: LOG
State Saved: Saved in instrument state.
Range: Log | Linear
Example: :DISP:PMD:RMOD LOG
:DISP:PMD:RMOD?
Key Path:
Amplitude Y Scale
Remote Command: :DISPlay:PMDeviation[1]|2:WINDow[1]|2|3|4:TRACe:Y[:SCALe]:
PDIVision <angle>
:DISPlay:PMDeviation[1]|2:WINDow[1]|2|3|4:TRACe:Y[:SCALe]:
PDIVision?
Unit: RAD
Preset: 1.0
State Saved: Saved in instrument state.
Range: 1 mrad to 62.8 rad
Dependencies/Couplings: See Restriction and Notes
Notes: If the Scale Coupling is set to On, this value is automatically determined by the
measurement result. When you set this value manually, Scale Coupling
automatically changes to Off.
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