Section 30: Outputs Tab
T
ieline
Page 266
T E C H N O L O G Y
Figure 77: Codec PPM Meters
30.1.2.
Setting Commander G3 Field Unit Audio Levels
On the field unit
COMMANDER
G
3
, codec audio levels are displayed on the
LCD
screen. Set your levels so that audio peaks average at the first solid bar.
This represents a program level of +4 dBu leaving the codec. Audio peaks
can safely reach +21 dBu without clipping. We recommend that you adjust
levels so that peaks don’t 16 dBu on all
T
ieline
codecs (indicated by
the red LEDs on the
COMMANDER
G
3
rack and the
i
-
Mix
G
3
codecs, and
the fourth solid LED on the field unit codec
LCD
).
+21 dBu
+4 dBu
(0 vu reference level)
-0 dBu
(-4 vu reference level)
Figure 78: Diagram Showing Codec Headroom
The preceding diagram shows the amount of operating headroom the codec
has. If you put 0 vu into the codec, when the codec input digipot is set at the
one o’clock position, the nominal operating reference level is 0 vu. An
17 dBu headroom before clipping
