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ENGLISH

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Introduction

Thank you for purchasing the ISA 220 Session Pack brought
to you by the Focusrite team – Trevor, Peter, Martin,
Helen, Raf, Tom, Mick, Phil, Chris, Micky, Pauline, Jo, Chris,
Bryn, Giles, 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: [email protected]

The Focusrite Team

Contents

Introduction ..............................................................................................1

Contents.....................................................................................................1

Important Safety Instructions.............................................................1

Power Connections ...............................................................................1

Signal Connections .................................................................................2

Getting to know the ISA 220.............................................................3

Metering .....................................................................................................3

Input Stage .................................................................................................4

EQ Module ................................................................................................4

Compressor..............................................................................................6

De-esser .....................................................................................................7

Limiter .........................................................................................................8

Output.........................................................................................................8

Stereo A/D ................................................................................................8

Applications...............................................................................................9

FAQs.........................................................................................................11

Specifications .........................................................................................13

Warranty.................................................................................................14

Accuracy..................................................................................................14

Copyright ................................................................................................14

Focusrite Distributors .......................................................................71

Reset Sheet.............................................................................................72

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.

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 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

Summary of Contents for ISA 220 Session Pack

Page 1: ...e 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 Adjus...

Page 2: ...the spare side of the A D card the right channel i e the channel not being used by the internal signal and so does not replace it Using this input two ISA 220 units can be used to create a stereo reco...

Page 3: ...ing temperature An ISA 220 will typically take up to 30 minutes to reach operating temperature Prior to this the meter may give slightly lower readings Digital Output Meters Two 16 LED bar graph meter...

Page 4: ...al variable gain of 0dB to 20dB with mic or line inputs selected white legend or 10dB to 40dB with instrument input selected yellow legend 48V This provides 48V phantom power for condenser mics when p...

Page 5: ...to 18kHz when x3 is pressed Param EQ In Press in to switch the Parametric EQ into the signal path X3 The Sweep controls have two ranges the higher being selected when the x3 switch is pressed frequen...

Page 6: ...may produce a less noticeable effect than a high threshold and high ratio even though the total amount of compression may be the same Threshold THRESHOLD determines the level at which compression beg...

Page 7: ...and uncompressed signals on two separate channels of a mixing console The unique blend switch on the ISA 220 recombines the direct unprocessed signal with the post compression signal at the gain make...

Page 8: ...miter is active An upper threshold is fixed at 20dBu to prevent overload of the internal or an external A D converter Output A variable control adjusts the ISA 220 s output level between 60dB and 6dB...

Page 9: ...n can be accessed by connecting the two audio signals to the EXT A D IP and INT A D DIRECT inputs directly accessing the A D inputs via the limiter and digital meters The INT input of the A D can alte...

Page 10: ...eates a stereo dual mono record channel with only one A D Card Stereo control of Dynamics section The example above also shows how to link two ISA 220s together allowing them to be used as a stereo du...

Page 11: ...e the same kind of spectacular bandwidth that has given the Red Range its reputation for open ended sound Yes The bandwidth of the ISA 220 extends from 10Hz to 150kHz 9 Can I use all the different sec...

Page 12: ...ering Yes the word length of a 24 bit input can truncated down to 20 or 16 bits and then dithered prior to digital output 22 Why are the Int A D and Ext A D inputs fed to the digital output card via t...

Page 13: ...um IP Level 22dBu 0dBFs Int A D Direct Input Connector TRS Stereo Jack Signal Balanced Operating Level 4dBu Maximum IP Level 22dBu 0dBFs Inserting a jack breaks the connection of the A D input from th...

Page 14: ...storage or maintenance If a product is faulty please first contact the dealer from which the product was purchased If the product is to be shipped back please ensure that it is packed correctly prefe...

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