RTW SurroundMonitor 11900 Series, Manual, Page: 264 / 376

8 | Instruments (Display Modes) | 8.8 | The CAL Instrument EN-74 SurroundMonitor 11900 Series
First function layer
The functions in this layer allow you to set the frequency and
level of the sine wave test signal:
• Level
(First layer, button/key 1 – toggle function linked to Level Var)
This function features the
dBu converted values
of the
reference levels of the analog inputs and outputs and the
calibration levels of the test signal generator which can be
adjusted in the
Reference Levels menu.
The factory settings for the
Calibration Reference Le-
vels
adjusted in dBFS are:
• –20 dBFS RMS
• –18 dBFS RMS: EBU adjustment level (–3 dBu)
• –9 dBFS RMS: Maximum allowed signal level
pursuant to EBU, 0 dB on the
peak meter (LMPSL) (+6 dBu)
The resulting dBu values depend on the selected
Re-
ference Level Standard
which is also adjusted in the
Reference Levels menu, so the button/key 1 can display
different values:
• Dec (Decrement)
(First layer, button/key 2)
This function reduces the variable output signal level (
le-
vel var
, see below) in 1 dB steps.
• Level var
(First layer, button/key 3 – toggle function linked to Level)
This function selects the variable output signal level set
with the buttons/keys
2
(
dec
) and
4
(
inc
). Preset is the
dBu value of Calibration Reference Level 2 set in Refe-
rence Levels
menu (see also
Level
above).
• Inc (Increment)
(First layer, button/key 4)
This function increases the variable output level (
Level
Var
) in 1 dB steps.
NOTE -
The settings made with buttons/keys
1
to
4
are
also applied to the other test signal types (
P-Noise, LF-Test
).
• Close
(First layer, button/key 7)
This function stores your settings and closes the current
function layer. The test signal generator remains active
and the test signal remains on.
Second function layer (select More to activate)
• Frequency selection functions
(Second layer, buttons/keys 1 to 6)
These functions select the frequency of the sine wave test
signal.
• The left value is activated the first time you select
the function. The signal is then routed to the selecte
channel and all other channels are muted.
• The right value is activated when you select the func -
tion a second time. he signal is then routed to the
selecte channel and all other channels are muted.
Values (in Hz):
(1) 20 – 25
(2) 50 – 100
(3) 250 – 500
(4) 1k – 2k
(5) 4k – 8k
(6) off – 10k
The
off
function switches off the LF test signal.
• Close
(Second layer, button/key 7)
This function stores your settings and closes the current
function layer. The test signal generator remains active
and the test signal remains on.