16
M/S Master
Output & VU section
Control Elements
OUTPUT
Use the OUTPUT control to attenuate the output signal up to -16 dB or boost it up to +4 dB,
in order to match it to the following unit in the chain. The output level on the VU-meter is
indicated in PPM mode. Before starting any processing, always set the OUTPUT control to 0
(around three o‘clock). That way you can read the Mid and Side signal levels on the VU-meter
without the output setting having any influence on them.
VU meters
The VU meters (VU = Volume Unit) measure the output level, which ranges from -20 dB to
+5 dB. The meters show the changes in level caused by processing the signal with the M/S
Master. The VU meters have two different operating modes: L/R or M/S. That way you can
always have an accurate level reading while working with the M/S Master – including the
changes in level that may be caused by external processors. You may find more detailed infor-
mation under the descriptions of the „PPM“, „M/S“ and „-10 dB“ push buttons.
PPM
Use the VU/PPM push button to toggle between VU and PPM display mode. VU mode shows
average level readings and therefore provides information on the overall loudness or energy
of the signal.
PPM mode (PPM = Peak Program Meter) indicates peak levels, similar to AD converter meters,
where it is important to control peak levels in order to avoid the converter from saturating and
distorting. Sometimes it can be useful to activate the -10 dB push button while in PPM mode
to extend the display range.
M/S
Use the M/S push button to toggle between L/R output level display (M/S push button disen-
gaged) and M/S level display (M/S push button engaged).
The VU-meters are labeled „LEFT“ and „RIGHT“ respectively (left, above the meters). When in
M/S mode, the labels that apply are „MID“ and „SIDE“ (right, below the meters).
In L/R mode the level shown is post output control, which means that it takes into account all
processing that you have made with the M/S Master, including the OUTPUT control.
In M/S mode it shows the output signals of the Mid and Side channels respectively. That way
you can see how processing, including external processors, affects level relations in M/S
encoding. Level changes produced by the OUTPUT control are not shown in M/S mode. To
keep track of the L/R output level switch to L/R mode (M/S push button disengaged).
OUTPUT
-16
-
15
-
14
-1
3
-1
0
-8 -5
-2
0
2
3
4
dB
SI
DE
LE
FT
M
ID
RI
GH
T
PPM
M/S
VU
-10
d
B
PPM
M/S
VU
-10
d
B
Summary of Contents for M/S Master 1020
Page 22: ...Manual M S Master Model 1020...
