RTW SurroundMonitor 11900 Series, Manual, Page: 256 / 376

8 | Instruments (Display Modes) | 8.8 | The CAL Instrument EN-66 SurroundMonitor 11900 Series
8.8 | The cal instrument
The CAL instrument is always displayed in window 3. To se-
lect it assign the focus to it (indicated by a highlighted frame
around the window) by pressing the INSTR key. When the
focus is on this window the CAL functions are dis played in the
Toolbar (window 1).
The CAL instrument maesures the referenced sound pressure
level and offers several option which can be used for the cali-
bration of the studio envi ron ments. The signal form and level
are selected with the function keys. Switching the test signal
to the desired outputs is easiest with the buttons/keys on the
control panel of the unit or the front panel of the Remote Dis-
play 30010. When you acti vate the CAL instrument all outputs
are automatically muted (indicated by red speaker symbols in
window 3). The default test signal is pink noise with a band-
width of 20 Hz – 20 kHz and a level of –18 dBFS RMS. The
SPL meter is displayed in window 2 and the cali bration micro-
phone input is active.
Selected SPL reference value
and the difference to current
value
Selected measurement range
Selected type of the Test
Signal Generator signal and its
frequency range
The color of the loudspeaker symbols shows the
state of the output (red: Off, green: On) Current meausured SPL
value
Level preset of selected signal
Selected measuring micro phone
and state of phantom power
supply for the