Specifications

Chapter 74: SignalTools 363
Peak + RMS Uses a multi-color display to show
both types of metering. Peak metering is shown
in conventional green color, while RMS meter-
ing is shown in blue.
VU (Volume Unit) Uses AES standards for signal
level indication.
BBC Uses IEC-IIa standards for signal level in-
dication. This style of metering suppresses short
duration peaks that would not affect broadcast
program material. Reference calibration (4 dB)
is –18 dBFS.
Nordic Uses IEC Type I standards for signal level
indication and provides greater resolution for
readings between –10 dBu and +4 dBu. Refer-
ence calibration (0 dB) is –18 dBFS.
DIN Uses IEC Type I standards for signal level
indication and provides greater resolution for
readings between –10 dBu and +5 dBu. Refer-
ence calibration (–9 dB) is –18 dBFS.
VENUE Provides Peak metering behavior with a
meter scale calibrated specifically for VENUE
systems. Reference calibration (0 dB) is
–20 dBFS.
SignalTools Meter Peak Hold
Options
Clicking the peak hold button lets you choose
the style of peak hold when peaks are shown in
the plug-in meters.
3 Sec Hold Displays peak levels for 3 seconds
Inf Hold Displays peak levels until meters are
cleared
No Hold Does not display peak levels
SignalTools Meter Reference
Mark
Dragging the reference mark to a different loca-
tion on the meter scale adjusts the level of the
reference mark for the meter display. The mark
is set by default to the reference level for the cor-
responding meter type.
The “true” RMS meter scale is not the same
as the AES 17 RMS scale. For a sine wave
with a peak value of –20 dBFS, the “true”
RMS meter will show a value of –23 dBFS.
(The same sine wave will show a value of
–20 dBFS on an AES 17 RMS meter.‚
Meter values are always displayed on con-
trol surfaces in dBFS values, regardless of
the Meter Type setting.
SignalTools level peak hold button
SignalTools level reference mark
SignalTools meters also change color to
show different ranges of level. The relative
range of color automatically adjusts to fol-
low the current Reference Mark setting in all
meter types (except Peak+RMS).