RTA (Real Time Analyzer) Band-Pass Component

VIDEO TUTORIAL: RTA is covered in the video tutorial of Basic Tests and Measurement.

The RTA - Band-Pass component allows you to measure the magnitude of a signal over the audio frequency range. The RTA - Band-Pass is typically used for tuning your system. For example, you can place microphones around your venue, feed them into the RTA - Band-Pass, and adjust the EQ for the individual areas to get the best/same tuning for each area.

Controls

Control	Function	Default/Range
Response Panel	Graphical display of the RTA - Band-Pass response.	X Axis = 20Hz to 20kHz Y Axis = -80 dB to 20dB
RMS Response Time (seconds)	Sets the RMS Level Detector time constant for both attack and decay. This controls how quickly the RTA - Band-Pass A respond to changes in the input levels.	Default = 0.1 Range = 0.01 to 1
Max Hold Time (seconds)	Sets how long the maximum magnitude displays are held before refreshing.	Default = 1 Range = 0.1 to 10
Infinite Hold (button)	Holds the display, until the button is disengaged. During the period the Infinite Hold button is on, the RTA - Band-Pass updates the display with any magnitudes that are higher than the initial response, but does not change if the magnitude is lower.	Off/On
Clear Response	Clears the Response Panel display.	Off/Momentary On

Properties

Property	Function	Choices
Bandwidth	Selects the bandwidth for the band-pass filters in the RTA - Band-Pass. One octave provides 10 filters for the audio spectrum giving a wide bandwidth for each filter and a smoother response. A bandwidth of 1/24 octave provides 124 filters giving a narrow bandwidth for each filter, and a more granular response - more distinct highs and lows.	1 Octave 1/3 Octave 1/6 Octave 1/12 Octave 1/24 Octave

Property

Function

Choices

Bandwidth

Selects the bandwidth for the band-pass filters in the RTA - Band-Pass.

One octave provides 10 filters for the audio spectrum giving a wide bandwidth for each filter and a smoother response. A bandwidth of 1/24 octave provides 124 filters giving a narrow bandwidth for each filter, and a more granular response - more distinct highs and lows.

1 Octave

1/3 Octave

1/6 Octave

1/12 Octave

1/24 Octave

Control Pins

Pin Name	Value	String	Position	Pins Available
Clear	trigger			Input / Output
Infinite Max Hold	0 1	false true	0 1	Input / Output
Max Hold Time	0.100 to 10	100 ms to 10 s	0.000 to 1.00	Input / Output
RMS Response Time	0.010 to 1.00	10 ms to 1 s	0.000 to 1.00	Input / Output