ALLEN & HEATH iDR-4 User manual

USER GUIDE
Hardware Configuration
For software configuration refer to the iDR System Manager Help file
Publication AP5230
iDR-4
Digital Audio Mix Processor

2 IDR-4 User Guide
This product complies with the European Electromagnetic
Compatibility directives 89/336/EEC & 92/31/EEC and the
European Low Voltage Directives 73/23/EEC & 93/68/EEC.
This product has been tested to EN55103 Parts 1 & 2 1996 for use in
Environments E1, E2, E3, and E4 to demonstrate compliance with the
protection requirements in the European EMC directive 89/336/EEC. During
some tests the specified performance figures of the product were affected. This
is considered permissible and the product has been passed as acceptable for
its intended use.
Allen & Heath has a strict policy of ensuring all products are tested to the latest
safety and EMC standards. Customers requiring more information about EMC
and safety issues can contact Allen & Heath.
NOTE: Any changes or modifications to the equipment not approved by Allen
& Heath could void the compliance of the equipment and therefore the users
authority to operate it.
iDR-4 User Guide AP5230 Issue 2
Copyright © 2008 Allen & Heath Limited. All rights reserved
Whilst we believe the information in this guide to be reliable we do not assume
responsibility for inaccuracies. We also reserve the right to make changes in
the interest of further product development.
Allen & Heath Limited
Kernick Industrial Estate, Penryn, Cornwall, TR10 9LU, UK
http://www.allen-heath.com
Limited One Year Warranty
This product is warranted to be free from defects in materials or workmanship for period of
one year from the date of purchase by the original owner.
To ensure a high level of performance and reliability for which this equipment has been
designed and manufactured, read this User Guide before operating.
In the event of a failure, notify and return the defective unit to ALLEN & HEATH Limited or
its authorised agent as soon as possible for repair under warranty subject to the following
conditions
Conditions Of Warranty
1. The equipment has been installed and operated in accordance with the instructions in
this User Guide.
2. The equipment has not been subject to misuse either intended or accidental, neglect,
or alteration other than as described in the User Guide or Service Manual, or approved
by ALLEN & HEATH.
3. Any necessary adjustment, alteration or repair has been carried out by ALLEN &
HEATH or its authorised agent.
4. The defective unit is to be returned carriage prepaid to ALLEN & HEATH or its
authorised agent with proof of purchase.
5. Units returned should be packed to avoid transit damage.
In certain territories the terms may vary. Check with your ALLEN & HEATH agent for any
additional warranty which may apply.

iDR-4 User Guide 3
Important Safety Instructions – Read First
Read instructions: Retain these safety and operating instructions for future reference. Heed all
warnings printed here and on the equipment. Follow the operating instructions
printed in this User Guide.
Do not open: There are no user serviceable parts inside. Refer any service work to
competent technical personnel only.
Power sources: Connect the unit to mains power only of the type described in this User Guide
and marked on the rear panel. The power source must provide a good ground
connection.
Power cord: Use the power cord with sealed mains plug appropriate for your local mains
supply as provided with the equipment. If the provided plug does not fit into
your outlet consult your service agent. Route the power cord so that it is not
likely to be walked on, stretched or pinched by items placed upon or against it.
Grounding: Do not defeat the grounding and polarisation means of the power cord plug.
Do not remove or tamper with the ground connection in the power cord.
Ventilation: Do not obstruct the ventilation slots or position the unit where the air flow
required for ventilation is impeded. If the unit is to be operated in a rack, plinth
or other furniture ensure that it is constructed to allow adequate ventilation.
Moisture: To reduce the risk of fire or electric shock do not expose the unit to rain or
moisture or use it in damp or wet conditions. Do not place containers of liquids
on it which might spill into any openings.
Heat: Do not locate the unit in a place subject to excessive heat or direct sunlight as
this could be a fire hazard. Locate the unit away from any equipment which
produces heat such as power supplies, power amplifiers and heaters.
Environment: Protect from excessive dirt, dust, heat and vibration when operating and
storing. Avoid tobacco ash, drinks spillage, and smoke, especially that
associated with smoke machines.
Handling: To prevent damage to the controls and cosmetics avoid placing heavy objects
on the equipment surfaces, scratching the surface with sharp objects, or rough
handling and vibration. Protect the controls from damage during transit. Use
adequate packing if you need to ship the unit. To avoid injury to yourself or
damage to the equipment take care when lifting, moving or carrying the unit.
Servicing: Switch off the equipment and unplug the power cord immediately if it is
exposed to moisture, spilled liquid, objects fallen into the openings, the power
cord or plug become damaged, during lightening storms, or if smoke, odour or
noise is noticed. Refer servicing to qualified technical personnel only.
Installation: Install the unit in accordance with the instructions printed in this User Guide.
Do not connect the output of power amplifiers directly to the unit. Use audio
connectors and plugs only for their intended purpose.
Important Mains Plug Wiring Instructions
The unit is supplied with a moulded mains plug fitted to the AC mains power
lead. Follow the instructions below if the mains plug has to be replaced.
The wire which is coloured Green/Yellow or Green must be connected to the
terminal in the plug which is marked with the letter E or with the Earth symbol.
This appliance must be earthed.
The wire which is coloured Blue or White must be connected to the terminal in
the plug which is marked with the letter N.
The wire which is coloured Brown or Black must be connected to the terminal
in the plug which is marked with the letter L.

4 IDR-4 User Guide
Introduction
This user guide is intended for the technical engineer in charge of the installation and configuration of
the audio system. It is not intended for the day-to-day operator who should be provided with operating
instructions specific to the application by the installer. The function, application, installation and
technical details of the iDR hardware are described. It is kept short and to the point so that you can
quickly find the information you need. The Technical Specification at the rear of the guide provides a
complete and quick reference to the system parameters.
Please note : For details on the configuration of the DSP functions and resources please refer to the
Windows™ Help file which is part of the iDR System Manager software provided with the unit.
iDR is a growing system of components. Keep up to date with the latest additions and development by
referring to our web site http://www.allen-heath.com. The latest version of the operating and system
configuration software, communication protocols, user guide, application notes and additional support
information can be downloaded.
For information on the status and availability of the features described in this user guide and any
changes and new additions please refer to the Release Notes which come with the current version of
operating software.
We are able to offer further product support through our world-wide network of approved dealers and
service agents. Our web site provides full company and product range information. To help us provide
the most efficient service please keep a record of the serial number, and date and place of purchase to
be quoted in any communication regarding this product.
The guide is structured for the technical installer or user. The
information is displayed as follows:
Description Control, connector and system functions are
briefly described together with related technical specifications.
Information Where you see this symbol you will find an
explanation or background information on a particular topic.
Software Where you see this symbol you will find a
reference to the Allen & Heath iDR System Manager software
required to configure the unit.
Warnings For your own safety and to prevent damage
to equipment make sure you read and adhere to all warnings.
Model
Serial Number
Place of Purchase
Date of Purchase

iDR-4 User Guide 5
Contents
Important Safety Instructions .......................................... 3
Welcome to the iDR-4 ..................................................... 6
Main Features.................................................................. 7
Front Panel Overview ...................................................... 8
Rear Panel Overview ....................................................... 9
System Processing Overview ....................................... 10
Getting Started - Check the Contents........................... 13
iDR System Manager Software ..................................... 13
Installing the iDR-4 ........................................................ 14
Earthing ......................................................................... 15
Connections and Cables............................................... 15
Backup Power Supplies ................................................ 15
Starting Offline with the Software.................................. 16
Turning the iDR On and Off........................................... 16
Checking the Operating Code Version......................... 17
Updating the iDR-4 Operating Code............................. 17
The iDR-4 Setup Menus ................................................ 18
Setting the Unit Name ................................................... 19
Checking the Current Settings...................................... 19
Rebooting the iDR ......................................................... 19
Getting Started – Checking the Hardware.................... 20
Communicating with the iDR ........................................ 21
Communicating Using TCP/IP ...................................... 22
Connecting Direct to a PC ............................................ 23
Connecting to a Network .............................................. 23
Communicating Using a Dial-Up Connection............... 24
Connecting to a Modem Using RS232 ......................... 25
Connecting to a PC Using RS232................................. 25
Working with iDR System Manager .............................. 26
Setting the Time and Day Clock ................................... 26
Archiving and Loading Configurations ......................... 26
XLR Analogue Inputs and Outputs ............................... 27
TRS jack Inputs and Outputs ........................................ 28
Configuring the Stereo Monitor..................................... 28
Adding iDR-in and iDR-out Audio Expanders............... 30
Linking iDR-4 Units........................................................ 32
Adding the iDR-switch Expander .................................. 34
SysNet and PL-Anet Ports............................................. 37
The iDR-4 Memory System ........................................... 38
Starting with Patches..................................................... 39
Technical Specification ................................................. 40
Factory Default Settings ................................................ 46
Template for Front Panel Label..................................... 47

6 IDR-4 User Guide
Welcome to the iDR-4
The Allen & Heath iDR system is a set of components whose hardware, control and signal processing
flexibility make it well suited to many installed, live sound and special project applications. Two main
units are available, the 2U high 8 in 8 out iDR-8, and the 1U high 6 in 6 out iDR-4. This user guide
describes the iDR-4.
The 1U rack or desk mount iDR-4 is the main unit in the iDR system having all the DSP (digital signal
processing) power needed for 16 input and 16 output channels. The iDR-4 has a total of 6 balanced
audio inputs including 2 XLR analogue mic/line and 4 TRS jack line inputs. It has 6 balanced audio
outputs including 4 XLR analogue land 2 TRS jack line outputs. You can add a further 8 inputs and/or
8 outputs bringing it up to a maximum 14x14 matrix by plugging in the iDR-in and/or iDR-out audio
expanders. The signal can be routed at three key points: the input source patch bay, central
crosspoint matrix, and output source patch bay.
Although the iDR does not work with networked audio, the expanders can be located up to 250 metres
away so providing remote analogue audio inputs and outputs connected using CAT5 cables. You can
also daisy chain multiple iDR-4 and iDR-8 units in a distributed system. The units are linked using an 8
channel wide bus which plugs into the digital expander ports. Maximum matrix at any unit is 16x16
which includes the interconnecting bus. Several iDR units can be linked in this way, but you can have
only one iDR-in and one iDR-out expander per system. This is described later.
A stereo audio monitor is included. This can be optionally configured to use line level input and output
TRS jacks 5 and 6. The monitor can ‘ripple through’ chained iDR units. By itself, the iDR-4 can
provide a 4 in 4 out system with ripple through monitor, a 6 in 4 out system with monitor output, or a 6
in 6 out system without monitor. A built-in signal/noise generator provides a further source which can
be routed to the input channels for test and line up purposes.
There are many operator control possibilities. You can configure the 8 front panel keys and 16 3-
colour LEDs, and use the DR-Link port to add up to 3 iDR-switch units for up to 72 additional switch
closure and 48 open-collector logic outputs. In addition you can choose two of the following: the Sys-
Net serial port to interface with third party remote controllers, RS232 for modem communication, and
the PL-Anet serial port for running a network of Allen & Heath PL wall plates and controllers.
The iDR-4 features networked control. It is configured using the iDR System Manager software via an
Ethernet port either connected directly to the installer’s PC, or over a TCP/IP network. The PC control
can be password protected for security. Once configured it runs stand alone using its built-in iDR Unit
software with stored settings. iDR units can also be operated from networked PC workstations running
PL Client software configured as ‘virtual’ wall plates by the installer using PL Designer software. An
RS232 modem port lets the installer remotely interrogate units. The operating code can be updated
using RS232 or via the network.
The iDR system offers tremendous flexibility. The system set up is stored in patches. Up to 99 patches
can be programmed. You can decide which parameters are affected by each. To make best use of
this it is important that you plan your installation carefully before you start. You can try out, prepare
and archive different configurations offline before plugging in. Virtual panels and controllers are
displayed so you can simulate how it will work for real. You can program the unit name, clock and IP
address, and check diagnostic information and audio signal presence using the front panel menus
accessed by removing the face plate. You can attach a custom label within a recess in the face plate.
For further information on the configuration of the unit please refer to the Help files which come with the
software.
AUDIO INPU T EXPANDER
powerlock link iDR-in
lock link pow er
AUDIO OUTPUT EXPANDER
iDR-out
link power
24 IN 16 OUT SWITCH CONTROLLER
iDR-swi tch
iDR-4
AUDIO MIX PROCESSOR
<
iDR-4
Infra-red
Switch closures
Open-collector logic
Relays
Lamps
'Virtual' wall plates
System configuration
PL Client software
Fader Controllers
Wall Plates Terminate
iDR-switch
iDR-in
iDR-out
PL-Anet (RS485)
Sys-Net
DR-Link
REMOTE CONTROLLERS
MODEM
RS232
NETWORK
AUDIO EXPANDERS
AUDIO MONITOR
iDR System Manager software
PL Designer software

iDR-4 User Guide 7
Main Features
•iDR-4 main processing unit 1U, 2 mic/line in, 4
line in, 6 line out audio mix processor with 16x16
channel matrix. The heart of the iDR system, it
features 2 24bit Motorola DSPs.
•Daisy chain iDR-4 units Any number may be
interconnected via the 8 channel digital bus using
CAT5 cable. Many possibilities for flexible sound
system solutions.
•iDR-in 1U, 8 mic/line input expander unit.
Expands the number of inputs to 14. Can be up
to 250 metres away for remote audio. Uses CAT5
digital link. One input expander per iDR system.
•iDR-out 1U, 8 line output expander unit.
Expands the number of outputs to 14. Can be up
to 250 metres away for remote audio. Uses CAT5
digital link. One output expander per iDR system.
•iDR-switch 1U add-on unit providing 24 contact
closure switch inputs and 16 open collector logic
outputs. Up to 3 units may be daisy chained for a
maximum 72 switch and 48 logic outputs. Each
unit can be separated by up to 250 metres.
Connects via the DR-Link serial port.
•PL wall plates and remotes The Allen & Heath
range of optional wall plates and controllers for
remote switch, rotary encoder, infra-red, fader,
LED indicator and logic output control. Connects
via the PL-Anet serial port.
•Desk top or 19” rack mounting Rubber feet and
removable rack ears provided.
•Universal mains power input automatically
detects worldwide voltage from 100V to 240V AC.
•Removable face plate for accessing front panel
setup menu system. Also provides protection for
code update.
•XLR mic/line inputs Electronically balanced, pin
2 hot, for microphone or line level equipment.
Soft control of gain, pad switch and 20V phantom
power. No internal adjustments needed.
•XLR line outputs Electronically balanced, pin 2
hot, 0dBu with +18dB headroom.
•TRS line inputs and outputs Electronically
balanced, tip hot, ring cold, 0dBu with +18dB
headroom.
•Stereo audio monitor uses line in/out TRS jacks
5 and 6. Can monitor any point in the audio chain
using manual or mouse selection.
•Network port to connect to a PC or network for
control using the iDR System Manager, PL Client
software, Telnet, TCP/IP, remote access and
more.
•RS232 port for connection to a modem for
remote system interrogation.
•SysNet port a second RS232 port to interface
with third party touch screens and other remote
controllers running the proprietary Allen & Heath
SysNet protocol. It is also used when updating
the iDR operating code via a PC serial com port.
•8 Front panel soft keys can be assigned by the
installer as level, mute or patch recall with different
types of press action. Similar applies to the iDR-
switch functions.
•16 Front panel 3-colour soft LEDs can be
assigned by the installer as signal meters, mute,
level triggered or patch related indicators.
•Front panel LCD display A 16 character 2 line
LCD can display combinations of clock, patch
name, unit name and user defined text. This can
be linked to the patches.
•iDR System Manager software for system setup.
Once configured the PC can be removed and the
system operated stand alone. The software can
be password protected.
•PL Designer and Client software for creation of
‘virtual’ wall plates and controllers that can be run
from networked PC workstations. Operator
control can be restricted by the installer.
•Powerful fixed architecture with full processing
on all 16 input and output channels. Familiar GUI
makes setup and control an easy task.
•48kHz operation The iDR-4 has processing for a
full 16x16 matrix running at 48kHz. An upgrade to
96kHz may become available in the future.
•Patchbays and crosspoint matrix The input
source patchbay selects any physical input to any
input channel. The output patchbay selects any
output channel to any physical output. The 16x16
matrix allows independent level control at each
crosspoint.
•Channel stereo linking and grouping Input and
output channels can be linked for true stereo
operation, and grouped for master fader control.
•Configurations can be named, archived and
opened using PC files. These store the system
setup parameters such as communication
options, names, stereo linking, scheduled events
and set of patches.
•Patches Up to 99 patches can be created,
named and stored within the configuration file. A
patch can work with any number of selected
parameters including signal processing, soft key
and LED settings. This provides a unique
flexibility in setting up complex changes with
simple operator control.
•Time and day of week for display on the unit
LCD, and for scheduled event patch recalls using
the internal iDR-4 clock.
•Naming Input channels, output channels, groups
and PL devices can be named.
•Channel processing Includes faders, mute,
polarity reverse, delay, parametric EQ, crossover
filters, noise gates, compressors and limiters.
•Ducking, AMM and paging System functions
include a 16 priority level ducker, automatic mic
mixer and two independent pagers.
•Signal generator provides sine wave, white, pink
and band pass noise signals for system line up
and test.

8 IDR-4 User Guide
Front Panel Overview
1 Rack ears Mount the unit into a standard 19”
equipment rack. Can be removed for stand alone
desk or shelf mounting.
2 Rubber feet Provided separately. Press
these into the base holes for stand alone desk or
shelf mounting.
3A Label slot A custom adhesive label can be
fitted here for operator identification of the soft key
and LED functions.
3B Write-on label blocks This is the installers
reference hidden by the face plate to mark up the
soft key, LED functions and other information
using a suitable marker pen or adhesive label.
4 Face plate fixing holes Fit the face plate
using the four M3 screws provided once the unit is
configured and labels fitted. A suitable 2mm hex
Allen key is supplied.
5 LCD display Displays system information on
a backlit 2x16 character LCD display. You can
configure this to display different combinations of
clock, patch name, unit name and user defined
text. It is also used to display the setup menu
items.
6 Soft LEDs 16 3-colour LED indicators
referred to as ‘soft’ because they can be assigned
by the installer as audio meters, mute, level
triggered, channel on or patch related indicators.
They can display red, green or yellow.
7 Soft keys 8 momentary action switches
which can be assigned by the installer as level,
mute or patch recall.
8 Code update switch Puts the unit into code
update mode ready to accept new operating code
from a PC. Status is shown on the LCD.
9 MENU key Press and hold this key for 2
seconds to access the setup menus. These let
you set up the clock, unit name, TCP/IP and PPP
communication parameters, select points in the
channel signal path to monitor, and check system
diagnostics and information.
10 ESC key Press this key to exit from the
displayed menu item and return to the previous
item or normal operation.
11 ENTER key Press this key to accept the
changes or navigate through the sub menus.
12 Scroll keys The Uand Vkeys are used
when the soft keys are assigned as up/down level
controls. They are also used with the ESC and
ENTER keys to navigate through the setup
menus.
13 Expander status LEDs These display the
connection status. The ‘link’ LED lights when
communication is established via the DR-Link
port. The ‘lock’ LED lights when digital audio is
synchronised and working correctly.
14 Expander soft LEDs Can be assigned as
audio meters, mutes, level triggered or patch
related indicators in the same way as the main iDR
unit.
AUDIO INPUT EXPANDER
powerlock link iDR-in
lock link power
AUDIO OUTPUT EXPANDER
iDR-out
link power
24 IN 16 OUT SWITCH CONTROLLER
iDR-switch
iDR-4
AUDIO MIX PROCESSOR
<
L1 L2 L3 L4
L10L9 L11 L12
S1 S2 S3 S4
L5 L6 L7 L8
L14L13 L15 L16
S5 S6 S7 S8
ESC ENTER
MENU
hold for 2 sec
CODE UPDATE
<>
scroll
SETUP MENUS
iDR-4
AUDIO MIX PROCESSOR
<

iDR-4 User Guide 9
Rear Panel Overview
1 Mains input Use the IEC lead with moulded
mains plug suitable for your local mains voltage.
The protection fuse rating is marked on the rear
panel. The on/off switch is positioned on the rear
panel to prevent accidental operation.
2 Network port RJ45 socket for connection to
an Ethernet network or PC using UTP CAT5 cable.
This port is recommended for configuring the
system with iDR software. The MDI/X switch
selects network or direct to PC operation. The
‘link’ LED lights when communication is
established. The ‘TX’ LED lights when data is
communicated.
Note: The RS232, SysNet and PL-Anet control
ports are not all available at the same time. A
combination of two is selected using iDR System
Manager. The associated ‘active’ LED lights when
the port is available.
3 RS232 (MODEM) port This is used for
connection to a modem so that the unit can be
interrogated by a remote PC over a standard
telephone line. It can also be used for system
configuration using iDR System Manager software
but the faster network port is recommended.
4 Port active indicators These light when the
port has been selected using the iDR System
Manager configuration software.
5 SysNet port An RS232 serial port for
communication with third party remote controllers
running the Allen & Heath SysNet protocol.
6 PL-Anet port An RS485 serial port for
communication with a network of Allen & Heath
PL wall plates and remote controllers using CAT5
STP cable.
7 DR-Link port RJ45 socket for control of iDR
audio and logic expander units using CAT5 STP
cable. IN and OUT ports are provided on the
expander units so that the control can be daisy
chained through a system with more than one
expander.
8 Audio expander ports RJ45 sockets for
communicating 8 channel digital audio between
the iDR-4 and its expanders using CAT5 STP
cable. Two cables are required between the
expander and iDR-4, one for the audio, the other
for DR-Link control.
9 Audio inputs Balanced XLR inputs for
microphone / line level sources 1 and 2, balanced
TRS jacks for line level sources 3 to 6. Adding the
iDR-in expands the iDR-4 to 14 physical inputs.
10 Audio outputs Balanced XLR for line level
outputs 1 to 4, balanced TRS jack for outputs 5
and 6. Maximum +18dBu level. Adding the iDR-
out expands the iDR-4 to 14 physical outputs.
11 Monitor inputs and outputs These are
available on TRS input and output jacks 5 and 6
instead of the channels when selected using iDR
System Manager software. They can daisy chain
through multiple iDR units.
12 Switch closure inputs These are provided
on the iDR-switch. They can be hard wired from
remote wall plate and controller switches and
relays.
13 Open collector logic outputs These are
provided on the iDR-switch. They can be used to
control LEDs, lamps, relays and other devices.
14 Earth terminals These are provided to earth
(ground) the switch and logic output cable
shields.
Made in the UK by ALLEN&HEATH LIMITED
AUDIO OUT
CAUTION: R ISK OF ELECTRIC SHOCK. DO NOT OPEN.
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE FUSE WITH SAME TYPE AND RATING.
ATTENTION: REMPLACER LE FUSIBLE AVEC UN DES MEMES CARACTERISTIQUES.
47-63Hz ~ 25W MAX
100 - 240V~
THIS APPARATUS MUST BE EARTHED.
WARNING
SERIAL NUMBER
AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR.
FUSE: T500mAL
next
OUT DR-LINK
previous
IN
IN 2
Complies with UL6500, CSA-E65, EN60065
IN 8 IN 7
MIC/LINE INPUTS
IN 6 IN 5 IN 3IN 4 IN 1
AUDIO IN
Made in the UK by ALLEN&HEATH LIMITED
CAUTION: R ISK OF ELECTRIC SHOCK. DO NOT OPEN.
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE FUSE WITH SAME TYPE AND RATING.
ATTENTION: REMPLACER LE FUSIBLE AVEC UN DES MEMES CARACTERISTIQUES.
THIS APPARATUS MUST BE EARTHED.
WARNING
47-63Hz ~ 25W MAX
100 - 240V~
SERIAL NUMBER
FUSE: T500mAL
AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR.
next
OUT DR-LINK
previous
IN
OUT 2
Complies with UL6500, CSA-E65, EN60065
OUT 8 OUT 7
LINE OUTPUTS
OUT 6 OUT 5 OUT 3OUT 4 OUT 1
VG
G 4321 G5678G 1211109 G13141516G 20191817 G21222324
SWITCH INPUTS
LOGIC OUTPUTS
123
+-
4
VGVGVG +-+-+-
567
+-
8+-+-+- 910
+-+-+-+-
11
1214
+-+-+-+-
1516 13
switch
G
opto
+10V
2K2
opto
+
-
V
G
+10V DC max total 500mA
open collector
+24V DC, 200mA max
+10V
FUSE: T500mAL
WARNING
THIS APPARATUS MUST BE EARTHED.
ATTENTION: REMPLACER LE FUSIBLE AVEC UN DES MEMES CARACTERISTIQUES.
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE FUSE WITH SAME TYPE AND RATING.
100 - 240V~
47-63Hz ~ 15W MAX
CAUTION: RISK OF ELECT RIC SHOCK. DO NOT OPEN. AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR. Made in the UK by ALLEN&HEATH LIMITED Complies with UL6500, CSA-E65, EN60065
OUT INDR-LINK
next previous
DIGITAL EXPANDER
DIGITAL EXPANDER
MIC/LINE 1MIC/LINE 2OUT 4
CAUTION: R ISK OF ELECTRIC SHOCK. DO NOT OPEN.
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE FUSE WITH SAME TYPE AND RATING.
ATTENTION: REMPLACER LE FUSIBLE AVEC UN DES MEMES CARACTERISTIQUES.
47-63Hz ~ 75W MAX
100 - 240V~
THIS APPARATUS MUST BE EARTHED.
WARNING
AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR.
FUSE: T1.6AL
PL-ANET DR-LINK AUDIO OUTAUDIO IN
MDI/X
NETWORK LINE 3LINE 5
LINE 6 LINE 4
L
R
MONITOR
OUT 3 OUT 2 OUT 1 OUT 5
OUT 6
L
R
OUTPUTS INPUTS
OUT IN
active
Made in the UK by ALLEN&HEATH LIMITED Complies with UL6500, CSA-E65, EN60065
SERIAL NUMBER
TX LINK
TO AVOID DAMAGE ONLY CONNECT
COMPATIBLE PL-ANET EQUIPMENT
active
active
RS232 SYSNET (code)
EXPANDER INPUTS
EXPANDER OUTPUTS

10 IDR-4 User Guide
System Processing Overview
The iDR-4 has 6 analogue inputs and 6 analogue outputs. However, it has the onboard processing for
a full 16 input and 16 output channels. An extra 8 physical inputs and/or outputs are available when
the iDR-in and/or iDR-out audio expanders are added. Only one of each may be added. This means
that you can create an 6x6, 14x6, 6x14 or 14x14 system to suit your requirements. The stereo monitor
input and output are part of that count if they have been configured to use inputs and outputs 5 and 6.
iDR-4 and iDR-8 units can be daisy chained together using the 8 channel wide digital expander bus to
create even more flexible systems with additional local inputs and outputs and a maximum 16x16
matrix.
The system architecture illustrating the unexpanded iDR-4 is shown below. Note that physical inputs
and outputs 5 and 6 are normally routed through the processing channels to provide a 6x6 system. If
you wish to use the audio monitor function then these can be reconfigured using iDR System Manager
software to provide a 6x4 system with stereo monitor out, or a 4x4 system with ripple through stereo
monitor. Diagrams showing expanded and linked iDR systems as well as various monitor options are
shown later in this user guide.

iDR-4 User Guide 11
Physical inputs and outputs These are the
hardware audio connections including XLRs, TRS
jacks and digital expanders.
Input and output channels These are
processing channels. The input channels can be
sourced from any physical input, the signal
generator or silence (turned off). The physical
outputs can be sourced from any output channel.
Outputs 5 and 6 can be sourced from any output
channel or the stereo monitor. The input and
output channels are interconnected through the
crosspoint matrix. They are routed to and from
the physical connections via the source
patchbays. The iDR-4 has enough processing
built in for 16 input and 16 output channels. The
iDR-in and iDR-out expanders simply convert
between analogue and digital audio to work with
the iDR-4 16x16 matrix.
Analogue inputs The iDR-4 has 2 analogue XLR
inputs feeding high grade balanced mic/line
preamp circuits which accept a wide range of
microphone and line level signals. The 4 TRS jack
inputs have gain controls to accept from -18dBu
to +12dBu line level signals. The iDR-in
expander has 8 analogue XLR mic/line inputs.
Gain, pad and 20V phantom power switching are
controlled using the iDR System Manager
software so they can be part of the recallable
patch system. There are no trimmers or internal
adjustments needed.
Analogue outputs The iDR-4 has 4 analogue
XLR and 2 TRS jack line outputs. These are
balanced and can produce up to +18dBu
maximum signal level. The TRS outputs 5 and 6
can be configured to be used with the stereo
monitor if required.
ADC and DAC converters These convert the
analogue signals into digital (ADC) and processed
digital signals into analogue (DAC). High grade
24bit converters are used.
Expander input and output 8 Channels of audio
are communicated between iDR units using these
RJ45 ports. The digital signals are fed to and from
the associated virtual patchbays. Routing the
signals through the patchbays in this way
provides the flexibility for common sources to be
networked between multiple iDR units using CAT5
cable.
Monitor inputs and outputs Physical inputs 5
and 6 can be configured as ripple through monitor
inputs so that signals across several linked iDR
units can be checked. Physical outputs 5 and 6
should be configured as the stereo monitor output
to drive a connected amplifier and speakers or
headphones.
Signal generator Provides another selectable
source feeding the input channels through the
patchbay. Variable frequency sine wave, pink
noise, white noise or 1/3 octave band pass noise
can be selected. These can be used for system
line up and testing. The level is controlled using
the fader and mute function.
Source patchbays These connect the physical
inputs and outputs to the channels so providing a
flexible ‘virtual patchbay’ routing system. One
physical input can feed more than one input
channel. One output channel can feed more than
one physical output. Note that, as with any
physical patchbay, you cannot route two sources
into one channel, or two channels into one output.
Mix matrix This is the routing ‘heart’ of the
system fed by all 16 input channels, and feeding
all 16 output channels. It is known as a 16x16
crosspoint matrix. The signal can be switched or
have its level independently controlled at any
point. It is the matrix which provides the key to
independent multi-source zone routing and level
control.
INPUT
+
-ADC
GAIN
FADER
+20V
DAC
DAC
PAD SOURCE
MIC/LINE
SIG GEN
FREQ
PEQ4
PHYSICAL INPUTS
GATE COMP
FADER
MUTE
INPUT CHANNELS
MUTE
MIX
MATRIX
DUCKING
PAGER
DELAY PEQ8 LIMIT
OUTPUT CHANNELS
GR GR
SOURCE
DAC
5
6
PHYSICAL OUTPUTS
OUTPUT
ANALOG
MMMMM MMMM
NAME NAME
M
HF SHELF
LF SHELF
BELL
HF FILTER
LF FILTER
XOVER FILTER
OSCILLATOR
PINK NOISE
WHITE NOISE
1/3 OCT BP
AMM
9
16
INPUT
EXPANDER
FADER
MUTE
1
4
9
16
OUTPUT
ANALOG
OUTPUT
EXPANDER
SOURCE
NAMEiDR
1,2
+
-
GAIN
INPUT
LINE
3,4,5,6
ADC
RIPPLE THROUGH SELECT
RELAY
RELAY
FILTER
16
M
GR
SIDECHAIN
ACTIVE
1SEL
15+16
1+2
MONO
STEREO
SILENCE
FADER
ACTIVE MONITOR BUS
M
MUTE
The channel architecture illustrating the processing blocks is shown above.
For detailed instructions on using these please refer to the Help file which
comes with the iDR System Manager software.

12 IDR-4 User Guide
Delay Each output channel provides delay from
0 up to 340ms. It can be adjusted in ms, metres
or feet and has compensation for temperature.
PEQ The input channels each provide a 4 band
fully parametric equaliser, the output channels an
8 band equaliser. Compared with the graphic EQ
these are by far more powerful and accurate tools
for adjusting frequency response. Selectable
band types include HF shelf, LF shelf, bell, notch,
HPF, LPF and crossover filter type. Variable or
constant Q width can be used. The resulting
response is displayed on a frequency curve.
Gate The input channel noise gate is used to
turn the channel off when its level falls below a
preset ‘threshold’ level. This shuts off unwanted
noise such as ambient background pickup,
equipment hiss and hum and so on. It provides
threshold, depth, hold, attack and release
controls. The sidechain can be switched in for
frequency selective gating.
Compressor The input channel compressor
controls the dynamics of the signal. It can, for
example, help the intelligibility of the human voice
by reducing the gain of high levels and increasing
the gain of low levels, in effect squashing the
levels into a more manageable range. The
compressor provides threshold, ratio, hard/soft
knee, makeup gain, attack and release controls.
The sidechain can be switched in for frequency
selective compression such as de-essing or LF
contour.
Sidechain filter This input channel filter can be
switched into the gate and/or compressor so that
the dynamic response is tailored according to
frequency. For example, you can reduce the
‘pumping’ effect of a compressor by slightly
cutting the low frequencies in the sidechain, or
prevent false opening by triggering a noise gate
on the resonant frequency of an instrument using
a bell response sidechain filter. Full type and
parameter control is provided.
Limiter Each output channel includes a
protection limiter to control the maximum level
allowed at the outputs. This is typically used to
protect loudspeakers and control maximum SPL
listening levels. Threshold, attack and release can
be controlled.
Faders, mute and polarity The input and output
channels each provide a fader, mute switch and
polarity reverse. The fader offers +5dB boost
above the unity gain ‘0’ position. The matrix
provides variable level crosspoints with
independent fader control.
Groups and stereo linking Faders can be
grouped so that a master fader takes control of
assigned input or output faders. Channels can be
linked for stereo operation with single fader level
control and linked processing throughout the
audio path.
Active monitor bus Any point in the audio signal
path can be monitored. This is selected manually
or by moving the mouse over an active window.
The mouse monitor can ‘ripple through’ several
iDR units. With no monitor point selected, the
signal from the previous iDR unit is passed
through to the output. This means that one
monitor output can be used to listen to any point
in a multiple iDR system.
Metering Full metering is provided from all the
points shown with a meter bar in the diagram.
Sidechain level, gain reduction, and stereo
monitor meters are included.
Pager Two independent paging systems are
provided. They are fully configurable with
selectable paging mic, zones affected, and
variable ducker depth. They can be triggered
from any soft switch and use any soft LED for
indication. The switch action can be momentary
or latching.
Ducking Any input can override any combination
of outputs with variable depth, threshold and
release. There are 16 assignable priority levels.
Ducking is useful for overriding background music
during announcements, recorded messages,
jukebox playback and so on.
AMM The automatic mic mixer is popular in
conference situations where several microphones
can contribute to the mix. Microphones are only
opened when they are being spoken into. The
overall gain is reduced as more microphones are
opened. The amount by which they are reduced
is known as the NOM (number of open mics)
setting. This maintains a more constant level and
helps stop feedback. The ambient level is the
sum of all the mic channels. Threshold adjusts
the point at which the microphone opens above
the ambient level.
Level sense switching The iDR soft LEDs and
logic outputs can be switched when channel
signal activity is sensed. A meter point is selected
as the triggering source. The outputs could be
used, for example, for video broadcast of a
conference to switch between cameras when
different microphones are spoken into.
Naming Each input and output channel, and
input and output fader group can be named with
up to 8 characters for identification in the system.
A unique name can be applied to the iDR unit
itself so that it can be identified in a multiple iDR
system. The PL devices can be named for
identification within iDR System Manager.
Patches can be named.

iDR-4 User Guide 13
Getting Started - Check the Contents
Keep the product packing in case you need to ship the product
in the future. You should find the following components:
1x iDR-4 UNIT. This is packed with its face plate removed and
rack ears fitted. The ears can be removed for desk mounting.
1x iDR-4 FACE PLATE. Separately packed so that you can
start by configuring the unit using its front panel menu system.
4x SCREWS M3x12mm hex dome head. Part number AB4814.
Use these to secure the face plate to the unit.
1x ALLEN KEY 2mm hex. Part number AT4819. For fitting the
face plate screws.
4x RUBBER FEET. Part number AK0102. Press these into the
underside holes if you want to desk mount the unit.
1x IEC MAINS LEAD with moulded plug suitable for connection
to your local mains supply.
1x CAT5 UTP CABLE 2 metre RJ45. Part number AH4818.
Connects the unit to your PC or to a network.
1x RS232 CABLE. Part number AL3653. Connects the unit to
your PC for operating code update.
1x DOCUMENTATION PACK including Safety Sheet AP3345,
this user guide AP4530 and the Registration Card AP3594.
The iDR System Manager Software Available
README FILE Read this before starting.
RELEASE NOTES This file contains important notes about the
related version of the software. Read before starting.
iDR SYSTEM MANAGER APPLICATION to configure and
control the iDR system using a PC running Windows™.
WINDOWS™ HELP FILE for the iDR System Manager
application. This details the DSP functions and resources.
iDR UNIT OPERATING CODE This is pre-installed in the iDR-4
unit. However, check that it is the latest version. Update the
code as described later if it is not.
HYPERTERMINAL .ht FILES for setting up communication
between the PC and iDR-4 for updating the operating code.
Files are provided for COM1, COM2 and COM3.
SYSNET, TELNET and MIDI PROTOCOLS pdf files explaining
how to use the SysNet and MIDI (iDR-8 only) ports.
PL Calculator, PL-Client and PL-Designer software for working
with physical and virtual wall plates and remote controllers.
CONFIGURATION FILES Two .cfg files are provided, DEFAULT
and RESET. These give you a useful starting point.
LABEL TEMPLATE a Windows™ Word file for creating a
customised label to fit to the iDR-4 front panel. Use this to
identify the key and LED functions.
The self-extracting file iDRnnn.exe is available
from the Allen & Heath web site. ‘nnn’ is the
version number. For example iDR300.exe is
version number V3.00. Once installed the
software provides:
IMPORTANT: Before installing check
the Allen & Heath web site to ensure you have
the latest version.
iDR-4
AUDIOMIX PROCESSOR
<
iDR-4
AUDIOMIX PROCESSOR
<
L1 L2 L3 L4
L10L9 L11 L12
S1 S2 S3 S4
L5 L6 L7 L8
L14L13 L15 L16
S5 S6 S7 S8
ESC ENTER
MENU
hold for 2 sec
CODEUPDATE
<>
scroll
SETUP MENUS

14 IDR-4 User Guide
Installing the iDR-4
The iDR-4 and its expanders are supplied ready
for 19” rack mounting. For desk top or shelf
mounting remove the rack ears and fit the 4 press-
in rubber feet provided. Use Torx (star head)
screwdrivers.
Fit the face plate once you have configured the
settings with the front panel menu system and
fitted any labels required to identify the key and
LED functions. The plate is packed separately.
Fit this using the 4 hex screws and the 2mm Allen
driver provided.
Allow adequate space behind the units for
plugging in the connectors. The dimensions are
shown below.
Plug the cables into their correct sockets. We
recommend that you colour code or label the
cables to avoid errors when replugging them in
the future.
Do not obstruct the side ventilation slots.
Ensure adequate air flow around the units.
Do not install the units directly above or
below heat or electromagnetic generating
equipment such as power supplies and
amplifiers.
To avoid damage to the internal
assemblies do not fit screws or drill through
the case metalwork.
Do not remove the cover of the iDR unit.
There are no user serviceable parts inside. All
configuration is carried out using the front
panel menus and iDR System Manager
software running on a PC
AUDIO INPUT EXPANDER
powerlock link iDR-in
lock link power
AUDIO OUTPUT EXPANDER
iDR-out
link power
24 IN 16 OUT SWITCH CONTROLLER
iDR-switch
48mm
1.9"
44mm
1.7"
1U
232mm
9.1"
307mm
12"
144mm
5.7"
209mm
8.2"
75mm
3"
65mm
2.6"
iDR-in and iDR-out EXPANDERS
iDR-switch EXPANDER
48mm
1.9"
44mm
1.7"
1U
Remove 2x rack ears
Fit 4x feet
M3 Torx T10
Remove 2x rack ears
Fit 4x feet
M3 Torx T10
iDR-4
AUDIO MIX PROCESSOR
<
483mm
19" 443mm
17.4"
iDR-4 MAIN UNIT
48mm
1.9"
44mm
1.7"
1U
Remove 2x rack ears
Fit 4x feet
M3 Torx T10
357mm
14.1"
435mm
17.1"
75mm
3"

iDR-4 User Guide 15
Earthing
The connection to mains earth (ground) in an audio system is important for two reasons:
Safety - To protect the operator from a high voltage shock associated with the AC mains supply
feeding the system.
Audio Performance - To shield the audio signals from interference pickup and to minimise the effects
of ground loops which result in audible hum and buzz.
Earth is used to shield audio cables from external interference such as the hum fields associated with
power transformers, lighting dimmer buzz, and computer radiation. Problems arise when the signal
sees more than one path to mains earth. An earth loop results causing current to flow between the
different earth paths. This condition is usually detected as mains frequency audible hum or buzz. To
ensure safe and trouble-free operation we recommend the following:
Do not remove the earth connection from any iDR unit mains plug. The chassis of the unit is
connected to mains earth through the power cable to ensure your safety. Audio 0V is connected to the
chassis internally. If problems are encountered with earth loops use ‘ground lift’ switches or adaptors
on connected equipment accordingly, or disconnect the screens from interconnecting audio cables at
one end, usually at the destination.
Use a clean mains supply for the audio system. Ensure the audio mains supply is run separately
from lighting, motor, kitchen equipment and any other potentially noisy mains supplies. Use a mains
filter and surge protector for the audio supply if necessary. Take care to ensure good earthing in
distributed systems such as those with audio units linked over long distances.
Connections and Cables
Use professional quality cables and connectors and check for accurate wiring and reliable solder
joints.
Avoid running audio cables alongside mains, computer or lighting cables or near thyristor dimmer
and power supply units. If unavoidable, cross the cables at right angles or run them in separate
screened trunking to reduce the interference pickup.
Use low impedance sources such as 600Ωor less microphones to reduce susceptibility to
interference. The outputs of the iDR are designed to operate at very low impedance to minimise
interference problems.
Use balanced connections where possible as these provide further immunity by cancelling out
interference that may be picked up on long cable runs. To connect an unbalanced source to a
balanced Mic/Line input link the cold input (XLR pin3) to 0V earth (XLR pin1) at the unit. To connect a
balanced Line output to an unbalanced destination, link the cold output to 0V earth at the iDR unit.
Backup Power Supplies and Safety Standards
The iDR system is designed to conform to internationally accepted safety standards IEC60065 and
UL6500. It uses a built-in mains voltage power unit to supply the various internal power rails. It is
recommended that the iDR system be backed up using a UPS (uninterruptible power supply) in
installations where public safety is at risk. This is a requirement when an alarm or voice evacuation
system is integrated.
WARNING: For safety it is important that all equipment earths are
connected to mains earth so that exposed metal parts are prevented from
carrying high voltage which can injure or even kill the operator. The installation
engineer should check the continuity of the safety earth from all points in the
system including microphone bodies, cables, racks and equipment panels.
Check which safety standards apply to your installation. A backup UPS
supply may be required. The standards may also apply to the grade of cable and
installation methods required.

16 IDR-4 User Guide
Starting Offline with iDR System Manager Software
You need to install the iDR System Manager software on your
PC. This requires Windows™ 95, 98, NT, ME, 2K or XP. We
recommend that you check the Allen & Heath web site for the
latest version. We are continually updating our software to add
new features or make improvements. Download the latest
version from our web site.
IMPORTANT: Do not install this software over a
previous version. The setup utility will install the iDR System
Manager into its own directory so that previous versions can be
retained. A previous version can be uninstalled using the
Windows™ Control Panel Add/Remove Programs application.
Run the self-extracting .exe file to install the software. Follow
the on-screen instructions. Make sure you read the Release
Notes before running the program. These may contain
important information about the new software version.
Start the iDR System Manager from the Start / Programs / Allen
& Heath menu. To open a new session click on the blue icon,
press Ctrl+N, or open the New item in the File menu. Select
“Offline iDR-4” to start an offline session to get familiar with the
program before you connect the iDR-4 unit. Use the Help
menu to learn more about how the software works. You can
archive your settings to load into the iDR-4 later.
Turning the iDR-4 On and Off
Make sure you have read the Important Safety
Instructions printed earlier. Also check that your local
mains supply is compatible with that printed on the rear
panel of the iDR-4. Ensure that the correct mains lead with
moulded plug and IEC connector has been supplied.
To avoid any unexpected audible clicks or thumps
always turn connected power amplifiers down or off before
switching the iDR-4 or any other signal equipment on or off.
Turn the unit on by pressing the rear panel power ON/OFF
switch. The LCD display lights up and the message ‘Please
wait…’ is displayed while the processor boots up. This is
followed by a ‘Recall ..’ message if a power-up patch is active.
Finally, the normal display is shown.
Note that ‘normal’ display and control settings depend on the
last configuration loaded and whether a power-up patch has
been set.
Boot up time is normally around 10 seconds. However,
this can be up to 35 seconds if the front panel menu *5.1
DHCP Setup has been set to YES and the unit is not connected
to a DHCP network.
Parameters restored on power-up The iDR-4
remembers its unit name and address settings on power up.
The clock is always running so the correct time and day is
retained. Configuration related parameters such as channel
names, stereo linking and scheduled events are restored.
Patch related parameters such as levels, EQ and soft control
settings are recalled only if a power-up patch containing them
has been set. If not, then all patch related parameters are reset
according to factory default. Further details are provided in the
section about Patches later in this user guide, and in the iDR
System Manager Help file.
Allen & Heath
Wed 13:44:08
Please wait...
IMPORTANT: The iDR does not recall
its last settings on power up. It initialises to
reset state or recalls a ‘power up’ patch if one
has been set. Read here >>>>>>>>>
CAUTION: RISK OF ELECTRIC SHOCK. DO NOT OPEN.
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE FUSE WITH SAME TYPE AND RATING.
ATTENTION: REMPLACER LE FUSIBLE AVEC UN DES MEMES CARACTERISTIQUES.
47-63Hz ~ 75W MAX
100 - 240V~
THIS APPARATUS MUST BE EARTHED.
WARNING
AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR.
FUSE: T1.6AL

iDR-4 User Guide 17
Checking the iDR-4 Operating Code Version
With the face plate removed, press and hold the ESC key to
view the current version of operating code running in the unit.
Check that this code is the same version as the iDR System
Manager software you have installed on your PC. View this by
clicking on the software Help menu About item. If it is an older
version then carry out the code update procedure described
below. If you have several units connected over a network
make sure you check each for the correct version number.
We recommend that you check the Allen & Heath web site for
the latest version of software. Download and install this if it is
different to that already on your PC.
Updating the iDR-4 Operating Code
The rear panel SYSNET port is used for updating the unit
operating code from a binary file on the PC. This is done using
the Windows™ HyperTerminal application which sends the file
to the iDR via the PC RS232 serial port. The file is provided
with the iDR System Manager software.
NOTE: The operating code can also be updated using the
iDR network port. This can only be done once communication
with the PC is established and iDR System Manager is running.
Select Upload New Program Code from the File menu.
RS232 Make sure your PC has the Windows™ HyperTerminal
application installed and an available COM1, 2 or 3 port. Use a
standard male to female RS232 lead such as the one supplied
with the unit. Do not use a null modem cable.
Refer to any Release Notes which may apply. We recommend
that you archive the current configuration before you start the
update if the iDR-4 has settings you wish to keep. Further
information is provided in the iDR System Manager Help file.
1 Start HyperTerminal From the Start / Programs / Allen &
Heath / iDR System Manager menu select the Update iDR Unit
Software (COMn) item. Select the COM1 or COM2 version as
appropriate for your PC. The HyperTerminal window is
opened.
2 Select the file to transfer From the Transfer menu select
the Send File item. Click on the Browse button. The file
named ‘iDR Unit Software V3_nn.bin’ is displayed. Make sure
the version number is the same as the one you want to load.
Open the file. The Send File window is opened ready to send
the file via the COM port. Do not do this until you have
prepared the iDR-4.
3 Prepare the iDR-4 With the unit turned off, plug one end
of the RS232 lead into the appropriate PC COM port and the
other into the iDR-4 SYSNET port. Remove the iDR-4 face
plate. Select CODE UPDATE by sliding the recessed switch in
the direction of the arrow. Turn the iDR-4 on by pressing the
rear panel ON/OFF switch. The LCD displays the boot code
version number and ‘Update...’.
4 Start the file transfer Click on the HyperTerminal Send
button. The transfer starts and a window displays information
and a progress bar. The LCD displays ‘Updating…’ progress
and then ‘Update Complete’. The process can take a few
minutes.
5 Restore normal operation Exit HyperTerminal. Deselect
the CODE UPDATE switch. The unit reboots automatically.
Press ESC to confirm that the correct version of operating code
has been loaded.
HyperTerminal settings If you prefer to
use an alternative terminal or
communications program, or you wish to
configure the HyperTerminal connection
manually, the required port settings are:
Baud Rate 115200
Data bits 8
Parity none
Stop Bits 1
Flow Control None
Protocol 1K Xmodem
DR Boot V1.00
Update.....
Operating code is held in non-volatile
memory within the iDR-4 unit. It is the
software which runs the unit once it is
configured.
IMPORTANT: Make sure all iDR units
to be controlled by the PC are running the
same version software as installed on the PC.
Boot code is the built-in software used by
the iDR-4 to manage its operating code. It lets
the unit communicate with your PC when
performing code updates. It is permanently
stored and cannot be updated by the user.
A&H iDR V3.30
ESC ENTER
MENU
hold for 2 sec
CODE UPDATE
<>
a
ctive
RS232 SYSNET (code
)
MENUCODE UPDATE
active

18 IDR-4 User Guide
PL-Anet Devs: nn
Locked: NO
Sync Slave: NO
Forced Mstr: NO
Audio Exp: None
Sampling: 48kHz
Num Connects: nn
*8.5 Comms Opt'n RS232 Sys-Net
*8.4 MAC Address 0004C4-000000
*8.3 Gateway 0. 0. 0. 0.
*8.2 Net Mask 255.255.255.0
*8 Diagnostics *8.1 IP Address 192.168.0.2
Fader
Sidechain
Gate
Compressor
Eq
Delay
*7.3 Point Source
scroll channel
*7.2 Channel Channel 1
Output channel
*7 Monitoring *7.1 Ip/Op Input Channel
scroll character scroll character scroll character
*6.4 Password
A
&H
A
&HA&HMax 16 characters
scroll character scroll character
*6.3 Username iDR iDRMax 16 characters
scroll numbers scroll numbers scroll numbers scroll numbers
*6.2 Client IP 192.168.0.2 192.168.0.2 192.168.0.2 192.168.0.2
scroll numbers scroll numbers scroll numbers scroll numbers
*6 PPP Setup *6.1 Host IP 192.168.0.1 192.168.0.1 192.168.0.1 192.168.0.1
scroll numbers scroll numbers scroll numbers scroll numbers
*5.4 Set Gateway 255.255.255.0 255.255.255.0 255.255.255.0 255.255.255.0
scroll numbers scroll numbers scroll numbers scroll numbers
*5.3 Set Sub-Net 255.255.255.0 255.255.255.0 255.255.255.0 255.255.255.0
scroll numbers scroll numbers scroll numbers scroll numbers
*5.2 Set IP Addr. 192.168.0.1 192.168.0.1 192.168.0.1 192.168.0.1
Use DHCP: YES
*5 Network Setup *5.1 DHCP Setup Use DHCP: NO
scroll character scroll character scroll character
*4 Unit Name iDR iDRiDR
Max 16 characters
scroll day
*3 Day of Week DAY: Tuesday
scroll hours scroll minutes scroll seconds
*2 Clock TIME: 12:44:41 TIME: 12:44:41 TIME: 12:44:41
scroll patches
*1 Patch Select 01 Name
The iDR-4 Setup Menus
*1 Patch Select Scroll through the available
patches and recall the one you want. This can be
useful for recalling test patches for system
checking without the need for connecting to a PC.
*2 Clock Change the time of the internal clock.
*3 Day of Week Change the day held in the
internal clock.
*4 Unit Name Give the unit a unique name so it
can be identified when connected to a PC or
network. This is important if you have more than
one iDR unit on the network.
*5 Network Setup This must be done before
connecting the unit to a PC or network using
TCP/IP. You can select automatic address
allocation by a DHCP server, or enter the IP
address and Subnet Mask manually.
*6 PPP Setup This must be done before
communicating with a modem or PC via RS232
using a dial-up connection. Enter the host and
client addresses, username and password.
*7 Monitoring Lets you select any point in any
channel for monitoring using the headphones and
rear panel monitor output. It is a convenient way
to check the audio signals without the need for a
PC and without affecting the normal operation of
the unit.
*8 Diagnostics Provides useful setup and status
information.
iDR-4
AUDIO MIX PROCESSO R
<
REMOVE THESE SCREWS
PRESS AND HOLD FOR 2 SECONDS

iDR-4 User Guide 19
Accessing the iDR-4 Setup Menus
Before your PC can take control of the iDR-4 you need to set up its unit name and communication settings. This is
done using a simple front panel menu system. Once communication is established between the PC and iDR-4 you
use the iDR System Manager software to configure the DSP resources and parameters.
To access the menus If it is already fitted, first remove the iDR-4 face plate by removing the 4 corner screws using
the 2mm hex driver provided. This exposes the menu access keys.
Navigating the menus Press and hold the MENU key for 2 seconds until ‘***Setup***’ is displayed. Press the U
and Vkeys to scroll through the available menu options. Each menu is numbered ‘*N.n’ where ‘N’ is the main menu
number, and ‘n’ the sub menu. When you find the menu you want, press ENTER. Press the Uand Vkeys to
change the value. Press the ZENTER and YESC keys to accept or decline the changes and navigate through the
sub menus. Always press ENTER to save your changes. When you are finished, press ESC to exit the menus.
Setting the Unit Name
The iDR-4 is identified to the PC or network by its unit name.
This name is displayed in the list of available units when you
open a new iDR System Manager session.
To change the unit name select menu item *4 Unit Name.
Scroll through each character using the ZENTER and YESC
keys, and change the value using the Uand Vkeys. The
name can have up to 16 characters.
Checking the Current Settings and Status
Select menu *8 Diagnostics. Scroll through the various sub
menus to view the current settings.
Menu *8.1, *8.2 and *8.3 display the last current IP address,
Subnet Mask and Gateway address if applicable. Make a note
of these if you need to restore them later. Note that the
address shown is likely to be temporary if the unit is working
with a DHCP server. Menu *8.4 displays the unique hardware
MAC address belonging to the cpu card.
The ‘Num Connects’ item displays the number of connections
active via the NETWORK port. For example, an iDR-4
connected to a network with two PCs both running an active
session of iDR System Manager would report 2 connections. It
is a useful way of checking to see if the unit is being accessed.
The other information displayed includes which comms ports
are active, which audio expanders are connected, digital audio
sync status (locked, slave, forced master), and the number of
remote devices connected to the PL-Anet port.
Rebooting the iDR-4
It is necessary to reboot the iDR-4 if you make changes to the
network or PPP settings. You can do this two ways.
Power the unit off, then back on again, or
Select and then deselect the front panel CODE UPDATE
switch. It takes around a minute as the unit searches but does
not find update code. It reboots after the update search has
timed out. Note that the code is not updated in this case.
*** Setup ***
*4 Unit Name
*** Setup ***
*8 Diagnostics
To avoid any unexpected audible clicks
or thumps always turn connected power
amplifiers down or off before switching the
iDR-4 or any other signal equipment on or off.
<
ESC ENTER
MENU
hold for 2 sec
CODE UPDATE
<>
scroll
SETUP MENUS
*** Setup ***
*1 Patch Select

20 IDR-4 User Guide
Getting Started – Checking the Hardware
The iDR-4 is supplied with its settings pre-configured so that you can turn it on and
immediately get audio passing through it. This can be useful when you are installing a unit
on site and need to carry out initial tests on the hardware before the custom configuration
software is loaded. This can be done without the need to connect your PC and run the iDR
System Manager software. When shipped, the iDR-4 is loaded with the DEFAULT
configuration. The iDR software provided with the unit also includes this configuration file
so that you can load it again later if you want to restore the default settings.
The diagram above shows how the LCD, soft keys and soft
LEDs are assigned when you turn the unit on for the first time.
You can plug your test source such as a music CD into the
inputs, and route the outputs to your system amplifiers. You
should see the source signals displayed on the left hand soft
LEDs and the output signals displayed on the right. Note that
the input preamp gains default to 0dBu line level sensitivity with
pad selected and phantom power off. To properly test
microphone sources you need to run iDR System Manager
software and correctly set the gains.
The channel faders default to fully off. The soft keys are
assigned as level up/down selects to move the input and
output channel faders up and down. Use key 4 and 8 to select
either 1-3 or 4-6 for level control. Press the soft key for the
channel you want. Now use the two middle keys to scroll the
volume up or down. These time out after 2 seconds of
inactivity. You should see the level displayed as a bar and
number on the LCD display.
To get audio to pass through the unit you need to raise both
the input fader and the required output fader. In this default
configuration all inputs are routed through the matrix to all
outputs. You can use one input to test each output by raising
the output levels in turn. Similarly, you can use one output to
test all input sources.
To test the iDR-in and/or iDR-out expanders, if connected, you
need to remove the face plate and use the *1 Patch Select
setup menu to select Patch 2 (in) or Patch 3 (out). Use the
keys to select expander 1 to 8 level as shown above. Select
Patch 1 to return to the iDR-4 in/out test.
With the face plate removed you can use the Setup menus to
adjust the time and day setting, change the unit name, and
enter the communication settings ready to connect your PC.
For information on configuring the system run the iDR System
Manager software and refer to its Help file.
I/P1 LEV 92
I/P1 LEV 100
I/P1 LEV 0
Fader off
Fader 0dB
Fader +5dB
Green
Yellow
-24dBu signal present
0dBu normal level
+14dBu 4dB below clippingRed
Signal Meters
The levels can be adjusted from ‘0’ (off) to ‘100’
(+5dB boost). To set the fader to its 0dB unity
position raise the level bar until it reads ‘92’.
Note that all the channel processing such as
equalisers and compressors is set flat or out. If
you set both the input and output levels to ‘92’
then you should get 0dB unity gain through the
unit.
AUDIO INPUT EXPANDER
iDR-in
AUDIO OUTPUT EXPANDER
iDR-out
I/P METERS 1-8
12345678
O/P METERS 1-8
iDR-4
AUDIO MIX PROCESSOR
<
I/P LEVEL
1
< LEVEL >
iDR Unit Name
Wed 13:44:08
231-3
I/P METERS
4564-6
SELECT O/P LEVEL
1231-3
O/P METERS
SELECT
1234
4564-6
5678
Patch 2 : iDR-in (I/P EXPANDER)
Patch 3 : iDR-out (O/P EXPANDER)
Patch 1 : iDR-4
menu *** Setup ***
*1 Patch Select
METER
LEVEL
< LEVEL >
METER
LEVEL
12345678