RTW SurroundControl 31960 Series, Manual, Page: 256 / 430

7 | Control | 7.2 | Using the Control Elements EN-40 SurroundControl 31900/31960 Series
7.2.1 | The Monitoring Sound Pressure Level Display (SPL)
There are two different modes for displaying the monitoring
volume (Listening Level) in the 3-digit 7-segment display resp.
in the Status Box in window 4:
• SPL absolute
Displays the set equivalent listening sound pressure level
in dB SPL(A). This is the sound pressure you would get if
you applied a noise signal with reference level to the input
(e. g. –18 dB FS RMS).
• SPL relative
Displays the attenuation or gain relative to the reference
sound pressure level in dB. A display of 0 dB corresponds
to your preset reference sound pressure level.
The display mode is set with the function keys of the Monito-
ring Instrument, displayed in window 3. The selected display
mode (abs/rel) is shown as well.
Please proceed as follows to switch between absolute
and relative mode:
1. Press the INSTR button on the right until window 3 gets
the white frame.
2. Press the MODE button on the left to switch from Func-
tion Select mode to Instrument Select mode.
3. Press button 7 labelled MONITORING . The Monitoring
instrument is displayed in window 3 and the Toolbar
switches to the
Function Select mode for the Monitoring
Instrument.
4. Press button 6 labelled Listening Level until your pre-
ferred option is selected: absolute ( abs ) or relative ( rel ).
The selected option is highlighted in the Toolbar and also
displayed in the Monitoring instrument.
5. Turn the volume control and adjust the listening level.
You can calibrate the connected monitoring system with
the SurroundControl’s integrated test signal generator and
SPL Meter. You will also need a calibration microphone
available as an optional accessory.
On the Remote Control 30050, the decimal point of the right-
most digit in the 7-segment display lights up showing that
SPL
relative mode is active. With this decimal point off, the display
is in SPL absolute mode.
In SPL relative mode, both positive and negative values are
possible. The leftmost digit of the 7-segment display shows
„+“ or „-“ to indicate positive or negative values. Values greater
than ±9.9 dB are displayed with a resolution of 1 dB instead
of 1/10 dB steps for smaller values.
The SPL values are not only shown in the remote‘s numerical
display, but also in the status box and in the Monitoring instru-
ment in window 3. Absolute values are shown as SPL ... dB(A)
whil relative values will be shown as SPL ... dB.