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EN-137 9 | Menu | 9.6 | Reference Levels: The Reference Levels Menu
EN
SurroundMonitor 11900 Series
9.6 | Reference Levels: The Reference Levels Menu
nal Select functions
chapters further ahead).
The
Analog Metering Reference Level Offset
list box can
be used to adjust the analog inputs to local applications.
This menu page contains options for setting the reference le-
vels of the analog inputs and outputs and the calibration levels
of the test signal generator (see
The CAL Instrument’s Sig-
• Calibration Reference Level 1 to 3
These list boxes are used to set the various output levels for
the test signal generator. The factory defaults are –20 dBFS,
–18 dBFS and –9 dBFS. The adjustment of values is pos-
sible in 0.5 dB steps. The current settings are also conver-
ted to dBu and displayed to the right of the list boxes.
• Reference Level Standard
This combo box sets the analog output level that corres-
ponds to the digital value 0 dBFS. Available options:
• EBU R68 (+18 dBu)
• SMPTE/RP155 (+24 dBu)
• ARD HFBL-K (+15 dBu)
• User (+18...+24 dBu)
With the
user
option selected an additional list box dis-
plays for the individual selection of the maximum level
b18 dBu and +24 dBu.
NOTE - Depending on the selections here the
Scale
combo box for the
Standard Settings analog
on
the
Channel Group
menu pages features different num-
bers of scales. Please refer to
Peakmeter Parameters
chapter further ahead.
• Test Signal Limiter
The test signal generator (see
The CAL Instrument’s
Signal Select functions ) is equipped with an automatic
limiter for sine wave signals to protect the monitoring
system. The maximum level of the test signal generator is
–9 dBFS for frequencies up to 1 kHz and –18 dBFS for
frequencies above 1 kHz.
By default, this limiter is active. It can be switched off by
deselecting this checkbox.
• Analog Metering Reference Level Offset
With this list box the reference level of the metering dis-
play can be adapted to local conditions. Selections can be
made in 0.1 dB steps in a range of –8 dB to 8 dB.
Example
The unit is factory preset to “0 dB” display at +6 dBu in-
put level for analog signals using the DIN scale.
Sel1 dB in the
Analog Metering Reference Le-
vel Offset
list box will move the “0 dB” mark of the mete-
ring 1 dB up the scale. Put another way, the input signal is
attenuated 1 dB. This means that an input signal level of
+6 dBu will be displayed “–1 dB” instead of “0 dB”.
The other way round, selecting –1 dB in the
analog
Metering Reference Level Offset
list box will move the
“0 dB” mark of the metering 1 dB down the scale. Put
another way, the input signal is amplified 1 dB. This means
that an input signal level of +6 dBu will be displayed “+1
dB” instead of “0 dB”.