Metering Functions - Studer D950 Operating Instructions Manual

D950 Digital Mixing System
3.3.15

Metering Functions

Audio Levels:
Channel Overload:
Gain Reduction:
3-108 Desk Operation
The D950 provides a wide range of metering functions via the Audio Dis-
play Unit. This unit consists of dual 100 segment bar graph displays and a
series of LED indicators for each Channel Strip. These displays and LEDs
show audio level, gain reduction, overload, bus assignments, and some
channel section information.
If used as a channel-related bar graph, this panel provides the following
functions:
METER: Two 100-segment bar graph meters are used primarily to display audio
levels. For Mono channels, both bar graphs feature the same display; for
Stereo channels, left and right information will be displayed on separate
bar graphs.
Meter characteristics can be selected to display PPM or VU on a global
basis. Switching is accomplished using the METER VU key on the Central
Facilities Unit (CFU). When illuminated, the Meters display VU. Both bar
graphs will always function in the same mode.
Peak Hold: Each Meter features an integrated peak-hold function with automatic and
manual reset. All Meter Peak controls are found in the METER OVER-
LOAD section of the TB Mic/Display Control Unit. Engaging the METER
OVERLOAD PK DISPLAY key activates the Meter Peak indication mode.
In this mode, the meter will show the peak value (highest level) for a short
period of time and then automatically reset. The display will show the
peak value indefinitely if the METER OVERLOAD HOLD key is engaged
in addition. Held peaks can be reset manually using the METER OVER-
LOAD RST (reset) key.
Each Meter provides an overload indication function, which is controlled
using the keys in the CHANNEL OVERLOAD section of the TB Mic/Di-
splay Control Unit. Overloads are indicated when the OVR segment of the
Meter lights temporarily. Engaging the CHANNEL OVERLOAD HOLD
key will allow overloads to be memorized, even if the channel is currently
unassigned to the strip. Clearing Meter overload indications is accom-
plished with the CHANNEL OVERLOAD RST (reset) key.
Meters are switched to display dynamics unit gain reduction on a global
basis by engaging the GRM key on the Central Facilities Unit (CFU). The
Gain Reduction Meter (GRM) mode only affects channels configured with
a dynamics unit, and GRM values are only displayed when this dynamics
unit is active. In GRM mode the left bar graph will display audio level (for
stereo channels, the higher level of left- and right-channels is displayed),
while the right bar graph indicates gain reduction.
LEDs: LED indicators provide the following indications: Channel overload
(OVL), activation of the channel's dynamics unit (DYN), Gain Reduction
Meter mode (GRM), and bus assignments.
OVL: The red OVL LED illuminates when an overload occurs in the channel.
SW V3.3 Date printed: 03.09.03