4
IDR-in/out
User Guide AP4774
Expanded multiple iDR system
This diagram
shows an iDR system with two
iDR-8
units and both expanders
fitted. A system could also be created with
iDR-4
units or a mix
of
iDR4
and
iDR-8
units. DR-Link is only required to connect to
the expanders, not between the main units. Make sure you
connect DR-Link to the
iDR
associated with each expander.
Make sure you plug into the correct DR-Link socket. In this
case do not daisy chain DR-Link from one expander to the
other.
Use CAT5 STP cable. Maximum cable length is 250 metres.
Maximum audio matrix is 16x16. The audio link cable carries 8
channels. This can provide a distributed system with 8
common channels and 8 local channels at each unit.
IN
DR-
LINK
DR-
LINK
DR
-LINK
AU
DIO
IN
OUT
IN OUT
iDR Unit A
8A
7A
6A
5A
4A
3A
2A
1A
8
7
6
5
4
3
2
1
IN
OUT
IN OUT
iDR Unit B
8B
7B
6B
5B
4B
3B
2B
1B
8
7
6
5
4
3
2
1
IN
OUT
OUT
iDR-in
16A 15A 14A 13A 12A 11A 10A
9A
IN
DR-
LINK
iDR-out
16B 15B 14B 13B 12B 11B 10B
9B
OUT
Mic/Line Inputs x8
Female 3pin XLR
Electronically balanced, pin 2 hot
Impedance 2k (pad out),>10k ohm (pad in)
Sensitivity -50dBu to +5dBu
Gain range -15 to +50dB in 3dB steps
Pad -20dB
Sensitivity (pad out) -50 to -5dBu
Sensitivity (pad in) -30 to +15dBu
Maximum input level +33dBu
Pre converter soft limiter -4dBFS, switchable
Phantom power +48V DC switched
Line Outputs x8
Male 3pin XLR
Electronically balanced, pin 2 hot
Impedance <75 ohms
Maximum 18dBu
Expander Input / Output Port
RJ45 connector
Proprietary 8 channel digital audio
Connects to
iDR-4
or
iDR-8
main unit
CAT5 STP cable up to 250 metres (825 feet)
Converters
24bit resolution
A/D dynamic range 109dB A-weighted
106dB unweighted
D/A dynamic range 115dB A-weighted
112dB unweighted
DR-Link Port
Serial control of iDR expander units
Proprietary Allen & Heath control protocol
RJ45 connector
IN and OUT ports provided to allow daisy
chaining through multiple units
CAT5 STP cable up to 300 metres (1000 feet)
Performance
Frequency response 20Hz-20kHz +0/-0.5dB
Crosstalk <-80dB @ 1kHz, 0dB gain
THD+noise <0.01% @ 1kHz, 0dBu
Residual output noise <-93dBu
Input to output noise @ 0dB gain <-87dBu
Input to output noise @ 50dB gain <-73dBu
Latency <2.4ms expander XLR to/from
iDR
XLR
This is <0.084ms additional to
iDR
Status LEDs
Power –mains power on
Link – iDR-Link control communicating
Lock –audio communicating
Soft LEDs
Assignable by the installer
iDR-in
8x front panel
iDR-out
8x front panel
3-colour – green, yellow, red, off
Function 3-colour signal meters
Mute on/off
Static patch related
Power Supply
Universal mains input switched mode design
IEC 3pin
Country dependent mains lead supplied
Rear panel power on/off switch
AC mains input 100-240V AC 50/60Hz
25VA max
Fuse T500mAL 20mm
Mechanical
1U rack 483 x 232 x 44mm
19” x 9.1” x 1.7”
Desk
443 x 232 x 48mm
17.4” x 9.1” 1.9”
Weight 3.5kg,
7.7lbs
GAIN
+48V
PAD
LIMIT
ANALOG
AUDIO OUT
1
8
iDR-in
DR-LINK
DAC
OUTPUT 1
ANALOG
AUDIO IN
CONTROL
SOFT LEDs 1-8
CONTROL
SOFT LEDs 1-8
DR-LINK
1
8
LIMITERS
PREAMPS AND
iDR-out
INPUT 8
+
-
ADC
GAIN
+48V
PAD
LIMIT
ANALOG
DAC
OUTPUT 8
ANALOG
INPUT 1
+
-
ADC
