Focusrite ISA 428 Pre Pack User Manual

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
Specifications .........................................................................................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 qualified 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 fit into your outlet,
consult an electrician for replacement of the obsolete
outlet.
THIS UNIT MUST BE EARTHED BY THE POWER
UNDER NO CIRCUMSTANCES SHOULD THE
MAINS EARTH BE DISCONNECTED FROM THE
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 fire, 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 qualified
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 - Black Neutral - White Earth - Green
For units shipped to any other country:
Live - Brown Neutral - Blue Earth - Green and Yellow
1
ENGLISH
WARNING:
CORD.
MAINS LEAD