BSS Audio OPAL Series DPR-522 Owner's Manual - Manual (Page 7)

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3.0 Introduction
The BSS DPR-522 is a dual channel high performance professional noise gate
which has been designed to be simple and intuitive to use. Many of the
facilities provided on the unique BSS DPR-502 unit, such as the parametric
key filters and key signal metering have been incorporated, with some new
features added.
One unique feature of BSS gates, featured in the DPR-522, is the adoption of
true logarithmic audio level control during both the attack AND release
phases. This ensures the most natural sounding fades, which are very
important if long attack or release times are used.
The provision of balanced key send and return signals minimises the
possibility of interference, which other units with unbalanced connections
may suffer from, whilst having separate send and return connectors eases the
integration of other equipment with the DPR-522.
To further enhance the unit's flexibility, extensive control of the DPR-522 is
possible using external DC control signals and switches; inputs are available
to remotely trigger the gate or inhibit it. Both contact closure and logic signals
may be used for this. In addition a signal is provided by the DPR-522 when the
gate opens, which may be used to trigger other external equipment.
Introduction
Unpacking
4.0 Unpacking
As part of the BSS system of quality control, we check every product carefully
before packing to ensure that it reaches you in flawless condition.
Before you go any further, please check the unit for any physical damage and
retain the shipping carton and all relevant packing materials for use, should
the unit need returning.
In the event that damage has occurred, please notify your dealer
immediately, so that a written claim to cover the damages can be initiated.
Check out section 9.0; warranty section, for more info on the warranty, and
also to record your dealer details.