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iDR-8

User Guide

Physical inputs and outputs

These are the

hardware audio connections including XLRs,
digital expanders, headphones and monitor.

Input and output channels

These are

processing channels. The input channels can be
sourced from any physical input. The physical
outputs can be sourced from any output channel.
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-8

has enough processing

built in for 16 input and 16 output channels when
in 48kHz mode. The

iDR-in

and

iDR-out

expanders simply convert between analogue
audio and the digital signals working with the

iDR-

16x16 matrix.

Analogue inputs

The

iDR-8

and

iDR-in

each

have 8 analogue XLR inputs. These feed high
grade balanced mic preamp circuits. They accept
a wide range of microphone and line level signals.
Gain, pad and 48V 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-8

and

iDR-out

each

have 8 analogue XLR line outputs. These are
balanced and can produce up to +18dBu
maximum signal level.

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

A front panel stereo

headphones output is provided. Balanced line
level L and R inputs and outputs are available on
the rear panel. The inputs feed the active monitor
bus and can also be routed into the source
patchbay. The outputs are fed from a patchbay
which gets its source from the active monitor bus
or any output channel. In this way these
connections can be used either as a monitor
system or as channels in their own right.

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.

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.

DAC

OUTPUT

ANALOG

PHYSICAL OUTPUTS

SILENCE

15+16

1+2

MONO

STEREO

FADER

OUTPUT CHANNELS

FADER