AMS Neve S - DMX, User Manual

Page: 8 / 33

Operation
Input / Output Level And Mixing Section
The input may be switched between two channel operation (stereo input) and single
input, dual output operation (mono input using channel ‘a’ as source). The two outputs
may also be mixed if desired to create or enhance various effects. If the input is two
channel and the outputs remain unmixed the stereo LED will illuminate to indicate true
stereo operation.
The output level control is a ganged control which governs the output of both channel ‘a’
and channel ‘b’. After the input levels have been set for the best working conditions this
control should be adjusted to give a good level match on the mixing desk.
Input Level Control Section
Individual input signal levels can be varied using the two input control knobs, an
indication of the signal levels is given by ‘traffic signal’ light emitting diodes (LEDs). The
red LEDs are illuminated 6 dB before clipping, the yellow LEDs 12 dB and the green LEDs
18 dB. In normal operation, with a signal present the input levels should be adjusted so
that the green LEDs are illuminated all the time, the yellow LEDs most of the time and the
red LEDs illuminate only when the highest programme peaks occur.
A proportion of the output of a channel may be fed back to that channels input by
adjustment of the respective regenerative control knob.
VCO Control Section
Channels can be varied using the two input control knobs, an indication of the signal
levels is given by ‘traffic signal’ light emitting diodes (LEDs). The red LEDs are illuminated
6 dB before clipping, the yellow LEDs 12 dB and the green LEDs 18 dB. In normal
operation, with a signal present the input levels should be adjusted so that the green
LEDs are illuminated all the time.
The Dual Lock In Function
The S-DMX incorporates two independently controllable loops, which may also be
driven in ‘single shot’ mode by the keypad, audio triggered by their respective inputs and
the keyboard interface allows ‘playing’ of loop A in real time.
The audio is locked in by throwing the ‘lock in’ switch for the appropriate channel. (The
Ch.A in/out phase switch is used for Ch.B. lock in.) The message ‘Loc.A’ or ‘Loc.B’ will
then be displayed to acknowledge the capture of audio in the respective channels A and
B.
For the loop in Ch.A the current time into the loop of the start point is displayed by
pressing the A key on the keypad. A second depression of A will then display the time into
the loop of the selected end point. The display is identified by the two LEDs to the right of
the numeric display. The red LED marked ‘^’ indicates that the start of the loop is being
displayed, the green LED marked ‘v’ that the end is being displayed. Exactly the same
procedure is followed for Ch.B, using the B key instead of A.
The captured audio is looped by pressing the ‘D’ key and will loop the channel that is
currently selected. The display LP-A or LP-B will appear to advise the operator of this
function.
S-DMX User Manual
Page 6 Issue 3