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8 | Instruments (Display Modes) | 8.8 | The CAL Instrument EN-68 SurroundMonitor 11900 Series
First function layer
• RTA 1/6
(First layer, button/key 1)
This function opens the
RTa 1/6
instrument (its input is
automatically assigned to the calibration microphone input
in this mode) so that you can view the spectrum of the
signal input by the microphone. You can use all the func-
tions of the
RTa 1/6
instrument. Selecting the
Meter
but-
ton/key in the Toolbar of the
RTa 1/6
instrument takes
you back to the first function layer of the
cal
instrument.
Selecting the button/key MORE displays the second layer
functions again.
• SPL Meter
(First layer, button/key 2)
This function opens an additional function layer with
controls for the SPL Meter functions. See corresponding
chapter further back for a detailed description.
• Next Cha
(First layer, button/key 3)
This function switches the test signal to the next channel
(all other channels are muted). If no channel is currently
active the sequence begins with channel L. Switching is
performed clockwise.
• All
(First layer, button/key 4)
This function selects the test signal configuration for all
speakers as follows:
• Off: Switches the test signal off
• On: Switches the test signal to all outputs inclu -
ding LFE
• w/o LF: Switches the test signal to all outputs except
LFE
• Signal Off
(First layer, button/key 5)
This function mutes all outputs, no test signal is given out.
All loudspeaker symbols of the
cal
instrument are colo-
red red.
• Signal Select
(First layer, button/key 6)
This function opens a new Toolbar function layer with the
functions of the test signal generator. See next chapter for
a detailed description.
Second function layer (select More to activate)
• Ref SPL Dec
(Second layer, button/key 3)
This function (Decrement) reduces the current SPL refe-
rence value (
Ref SPL
, see below) in 1 dB steps in a range
from 68 to 88 dB(A).
• Ref SPL
(Second layer, button/key 4)
This function displays the SPL reference value for the test
signal generator set with button/key
3 Ref SPL Dec (see
before) and button/key
5 Ref SPL Inc
(see below).
• Ref SPL Inc
(Second layer, button/key 5)
This function (Increment) increases the current SPL re-
ference value (
Ref SPL
, see before) in 1 dB steps in a
range from 68 to 88 dB(A).