Sonifex Redbox RB-AES4B3, Руководство пользователя

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18
6 Audio Distribution Amplifier - RB-DA4x5
6 RB-DA4x5 4 Input, 4 x 5 Output Distribution Amplifier/Mixer
Introduction
Fig 6-1: RB-DA4x5 Front Panel
Output
Gain
Controls
Input
Gain
Controls
Input/
Output
Levels
Input
Selectors
The RB-DA4x5 is a 1U rack-mount combined distribution amplifier and
mixer. It has 4 mono analogue audio inputs on female XLR and 4 groups of
5 outputs on 15 way D-type connectors. Each output group has a five way
front-panel DIP switch assigned to it which is used to select the input(s) to
send to the output group. This enables each of the four inputs, and a 1kHz
0dBu tone, to be mixed to the output group.
The inputs and outputs are electronically balanced and can be wired
unbalanced. Each input has adjustable gain using a preset potentiometer,
providing a gain range of -8dB to +18dB. Each output is individually buffered
so that a short circuit on one output will not affect the others. The output
gain of each group can similarly be adjusted between -8dB and +18dB using
preset potentiometers.
The DIP switch settings and gain controls are recessed beneath a front-
mounting screw-on cover so that settings can not be accidentally altered,
for secure applications. Four bright front-panel signal present LEDs show
the levels of either the inputs or the output groups by pressing the AUDIO
PRESENCE button. The LEDs will show green illumination from -12dBu
through to 0dBu, amber from 0dBu through to +6dBu and red for inputs
and outputs at +6dBu and over.