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9.0 REAL TIME ANALYSER OPTION
REFERENCE
REFERENCE is used to shift the centre reference of the display i.e. to bring
the measured values into range. REFERENCE can be adjusted in 10dB steps
with the current value shown to the left of the display and on the top line. The
actual function of the REFERENCE button depends on the signal source.
External Microphone
With the Microphone (Micro) source selected the FLAT/REFERENCE
button toggles the display between dBu and dBSPL (Sound Pressure
Level).
See the relevant sections re. Setting Microphone gain and/or
sensitivity.
InA, InB, OutA or OutB
If the source is Channel A or B then pressing the FLAT/REFERENCE
button toggles the display between dBu and dBfs (full scale).
ENTER
Pressing the ENTER stops the analyser and holds the current display. This
frozen curve can then be stored and recalled using the STORE/RECALL
function in the RTA-SETTINGS 2 menu. HOLD is displayed to the right of the
display.
ESCAPE
Press the ESCAPE button to restart the analyser.
RTA-SETTINGS 1st page
This menu gives access to the Noise generator, Release times, Microphone gain,
Phantom power and Microphone response settings. Use the
îî buttons to
select the parameters and adjust using the DATA WHEEL or alternatively use
the DATA WHEEL to both select and adjust each parameter.
Default settings are -
Noise generator: OFF Peak release: 10s
Averaging: 1s Gain: 0dB
Phantom power: OFF Mic response: #1
NOISE
The DATA WHEEL selects between Noise on, Noise off, Click1 or Click 2.
Default is noise off.
Click 1 and 2 are bursts of pink noise which can be used for time aligning
speaker arrays. Click 1 has a repetition rate of xxx and Click 2 is xxx.
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