Focusrite ISA 428 Manual

Focusrite Ikke kategoriseret ISA 428

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Side 1/13
ENGLISH
1
Introduction
Thank you for purchasing the ISA 428 Pre Pack brought to
you by the Focusrite team – Martin, Crispin, Helen, Tim,
Tom, Mick, Dave, Simon, Paul, Phil, Micky, Pauline, Jo, Chris,
Giles, Chris, Rob and Simon.
The chaps at Focusrite are a jolly hard working bunch and
take a great deal of pride in designing, building and delivering
the best audio units around. We hope your new Focusrite
unit lives up to that reputation, and that you enjoy many
years of productive recording. If you would like to tell us
about your recording experiences then please email us at:
sales@focusrite.com
The Focusrite Team
Contents
Introduction ..............................................................................................1
Contents.....................................................................................................1
Important Safety Instructions.............................................................1
Power Connections...............................................................................1
Signal Connections.................................................................................2
Getting to know the ISA 428.............................................................3
Metering .....................................................................................................3
Input Stage.................................................................................................4
Analogue to Digital converter (ADC) Soft Limiter...................5
8 Channel Digital Output Option ....................................................5
Digital Output Front Panel Controls..............................................6
Applications...............................................................................................7
Other Compatible Focusrite Products 10.......................................
FAQs 11.........................................................................................................
Specications 13.........................................................................................
Warranty 14.................................................................................................
Accuracy 14..................................................................................................
Copyright 14................................................................................................
Important Safety Instructions
Please read all of these instructions and save them for
future reference. Follow all warnings and instructions
marked on the unit.
• Do not obstruct air vents in the rear panel. Do not
insert objects through any apertures.
• Do not use a damaged or frayed power cord.
• Unplug the unit before cleaning. Clean with a damp
cloth only. Do not spill liquid on the unit.
• Unplug the unit and refer servicing to qualied service
personnel under the following conditions:
If the power cord or plug is damaged; if liquid has
entered the unit; if the unit has been dropped or the
case damaged; if the unit does not operate normally or
exhibits a distinct change in performance. Adjust only
those controls that are covered by the operating
instructions.
• Do not defeat the safety purpose of the polarised or
grounding-type plug. A polarised plug has two blades
with one wider than the other. A grounding type plug
has two blades and a third grounding prong. The wider
blade or the third prong are provided for your safety.
When the plug provided does not t into your outlet,
consult an electrician for replacement of the obsolete
outlet.
WARNING:
THIS UNIT MUST BE EARTHED BY THE POWER
CORD.
UNDER NO CIRCUMSTANCES SHOULD THE
MAINS EARTH BE DISCONNECTED FROM THE
MAINS LEAD
This unit is capable of operating over a range of mains
voltages as marked on the rear panel. Ensure correct mains
voltage setting and correct fuse before connecting mains
supply. Do not change mains voltage settings while mains
supply is connected. To avoid the risk of re, replace the
mains fuse only with the correct value fuse, as marked on
the rear panel. The internal power supply unit contains no
user serviceable parts. Refer all servicing to a qualied
service engineer, through the appropriate Focusrite dealer.
Power Connections
There is an IEC mains lead supplied with the unit, which
should have the correct moulded plug for your country.
The wiring colour code used is:
For units shipped to the USA, Canada, Taiwan and Japan:
Live Neutral Earth - Black - White - Green
For units shipped to any other country:
Live Neutral Earth - Brown - Blue - Green and Yellow
ENGLISH
2
Signal Connections
(Optional ADC shown tted)
XLR (Audio) Inputs and Outputs
All 3-pin XLR balanced audio connectors (Output, Mic IP
and EXT A/D IP) are wired as follows:
Pin 1 Screen/Chassis
Pin 2 Audio 0°
Pin 3 Audio 180°
Line IP and Insert Sends and Returns
1/4” balanced jack wired as follows:
Tip Audio 0°
Ring Audio 180°
Sleeve Screen/Chassis
Inst. Hi Z IP
1/4” unbalanced jack wired as follows:
Tip Audio 0°
Sleeve Screen/Chassis
Mic IP/Line IP/Inst. Hi Z IP (front panel)
Any one of these inputs may be used as the input to the ISA
428 channels 1-4. Signals routed to these inputs are
referred to as the ‘internal’ channels or signal paths.
Outputs - Channels 1-4
These outputs are used as the main analogue signal outputs,
and are fed by whatever is connected to the Mic Inputs,
Line Inputs, or Instrument Inputs. These outputs also
connect to the ADC ‘internal’ channels 1-4 via the Soft
Limiter circuit.
Insert Send and Return
Allows an external unit, such as a Red 3 Compressor or
Red 2 EQ, to be placed within the signal chain, prior to the
output and post the high pass lter.
ADC Inputs 5-8
The ADC inputs 5-8 act as line level inputs and are used to
route ‘external’ signals to the optional ADC channels 5-8
via the Soft Limiter. Using these inputs in conjunction with a
single optional ADC card, up to eight analogue inputs can
be routed to the eight digital outputs. Using these inputs in
conjunction with a second ISA 428 unit and a single optional
ADC card, eight pre amps can be routed to all eight ADC
channels. (See ‘Signal Connections’ on page 8.)
Retrotting the Optional ADC
The optional ADC can be retrotted to a standard ISA 428
at any time. The card can be tted easily by the user – no
engineering experience is required. Full tting instructions
for this option are included along with the ADC.

Produkt Specifikationer

Mærke: Focusrite
Kategori: Ikke kategoriseret
Model: ISA 428

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