RuCD Spectrogram Setup Help


Start Spd (RPM) - Use the numeric keypad to enter the RPM start speed for the plot. By default this value is the same as the start speed set in the main setup screen. 

Stop Spd (RPM) - Use the numeric keypad to enter the RPM stop speed for the plot. By default this value is the same as the stop speed set in the main setup screen.

Spacing - Use the drop-down menu to select the type of interval to be used for the plots. Choices available are: ΔRPM, %ΔRPM, ΔTime, ΔRPM + ΔTime or %ΔRPM + ΔTime.
Depending on which option is selected will allow you to enter values for the speed interval and time interval using the numeric keypad.

Display Units - Select the Y-axis units from the drop down menu. The available units will vary depending on the transducer used to collect the data.

Detection - Determines signal detection and scaling.  
Choose from:
RMS - the Root Mean Squared value
Peak - scaled from RMS (= √2 × RMS)
Pk-Pk - scaled from RMS (= 2 × √2 × RMS)

Lines - Determines the resolution of the spectrum.

X-Axis - Select the X-axis units from the drop down menu. The choices available are Hz, CPM or Orders.

Freq Range - Use the alphanumeric keypad to enter the maximum X-axis value. Units are dependant on what the X-axis has been set to show.

LF Cutoff - Select the Low frequency cutoff frequency from the drop-down menu list of high pass filters.