Asystems DMP808 - Controls & Settings

3
English
DMP808
GLOSSARY
The following are a few words that may serve you
well while reading this manual� These aren’t in depth
explanations, but should hopefully give you the basics
and a place to start�
Balanced Connections – balanced connections offer
three conductors, carrying a ground, an in-phase signal,
and an out-of-phase signal� Once the two signals are sent
from one device to another, the out-of-phase signal has
its phase inverted and the two signals are combined� Any
interference picked up along the way is removed through
to phase cancellation� This allows cables to be run over
long distances without collecting excessive noise on the
way�
Compressor – a Compressor reduces signals over a
user-dened threshold by a user-dened amount/ratio.
Dynamic Processor – is any kind of processor that
dynamically – or in real time – adjusts signal properties�
EQ – Equalizer – is a device or process that allows users
to boost or attenuate audio signals at specic frequencies.
Euroblock – These types of inputs allow for self-wiring
of connections for permanent installations� Check the
“Getting Started” section for more information on wiring�
GEQ – Graphic Equalizer – is in essence the same as
an equalizer, but this title is reserved for equalizers with
more ‘bands’ than the typical EQ. While a typical channel
EQ may only allow for 3 or 4 frequencies to be adjusted,
a graphic equalizer may allow for 31 different frequencies.
GUI – Graphical User Interface – this is the remote PC
software used for the DMP808�
HPF – High Pass Filter – a high pass lter will cut or
signicantly reduce all audio signals below a particular
126 35
47
CONTROLS & SETTINGS
FRONT PANEL
1. Mounting Holes
These holes are for mounting the DMP808 on a standard
19” rack�
2. Power Switch
Flick this switch to sturn the unit on or put it on standy� Be
aware that the power switch can be disabled through the
A Systems DMP808 software�
3. Power LED
This LED indicator will illuminate when the DMP808
is activated – whether by switch or through the remote
software�
4. Disable LED
This LED will light up when the power switch is disabled�
When this occurs, the DMP808 cannot be turned on or
put on standby via the front panel switch� This function is
disabled within the A Systems PC software�
5. Output LEDs
The Mix Output LEDs will light up green when an output
signal is present on the corresponding output mix� It will
also ash red when the output channel clips. In this event,
you can reduce any excessive input signals, or turn down
your master output mix level through the control software�
6. Signal/Clip LED
This LED indicator is found on every input channel� When
a signal is present in the input channel, the LED will light
up green� When it clips, it will light up red� In the event that
the LED is red, we suggest reducing the input signal level�
Occasional ashes may be acceptable if it doesn’t affect
your program material�
7. Gain Controls
These rotary controls will allow users to adjust the nal
input level for channels 1 through 8�
user-dened frequency, allowing – as the name suggests
– high frequency sounds to pass through�
High Shelf Filter – the high shelf lter will reduce or
increase all audio signals below a particular frequency�
The level at which the signal is boosted/attenuated is
determined by the user�
Limiter – work just as compressors do; however with an
input to output signal ratio permanently set to innity-to-1.
LPF – Low Pass Filter – a low pass lter will cut all
audio signals above a particular user-dened frequency,
allowing low frequency sounds to pass through� This is
signicantly useful when using subwoofer speakers on
particular outputs�
Low Shelf Filter – the low shelf reduces or increases
the level of audio signals below a particular frequency
selected by the user� The level at which the signal is
altered is also set by the user�
Network – a network is a series or group of computers that
are interconnected so as to share information� In the case
of the DMP808, the network allows for remote operation
of the device using our Windows-based computer�
Noise Gate – a noise gate is a dynamic process that
turns off or signicantly attenuates the audio signal
passing through it when the signal level falls below a user
adjustable threshold�
Unbalanced Connections – unlike balanced connections,
unbalanced connections only have 2 conductors: one for
the signal and one for the grounding� This, unfortunately,
makes them more susceptible to noise and interference�