digico A164 User manual

A164-W LCD User Guide
1
AP11448 Issue 3d
A164 WALL LCD
The A164 WALL LCD is a fixed installation I/O Expander for the DiGiCo 4REA4
system. It provides 16 remote controlled mic/line preamps and 4 XLR line outputs.
It connects to the 4REA4 over a single Cat5 cable.
A second A164 WALL LCD or an A168 Stage can be connected when running in
Cascade mode. Alternatively, a redundant connection can be made to compatible
hardware.
The A164 WALL LCD can be operated freestanding, mounted in a floor pocket,
mounted on a wall, or flush mounted in a wall. Different power options are provided
to suit the application.
⚠This product must be installed by a professional
installer or qualified electrician.
Contents
Check that you have received the following with your A164 WALL LCD unit:
•Optional gland module (004-1097) for permanent ac mains wiring
installation.
•Mounting frame (AA11529) for in-wall or wall surface mounting.
•6 x M4 T20 screws (AB11238) for mounting A164W unit to mounting
frame (AA11529).
Connection
Redundant mode –to compatible hardware only
Cascade mode –add second A164 WALL LCD or A168 Stage
4REA4 A3232
OR A-Star (x2)
A3232 1
A3232 2
4REA4 A3232
OR A-Star
A3232 1
A3232 1
A3232 2

A164-W LCD User Guide
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AP11448 Issue 3d
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Top panel and power options
A3232 1 - EtherCon port for connection to the mixing system. The cable
carries the audio signals as well as preamp control and system status data.
A3232 2 - EtherCon port for daisy chaining of a second unit or cable
redundancy.
A3232 2 mode switch - Switch to Redundant for 2 cable connection to
compatible hardware e.g. 4REA4 or AStar (x2). Switch to Cascade for
connection to a second A164 WALL LCD or A168 Stage unit.
DC 12V Input - Can be used instead of AC mains to power the unit where
adequate DC distribution is provided in a building. Can also be used as a
backup power supply in case of mains failure.
Mains power input - The built-in universal PSU accepts voltages from 100
to 240V AC 50/60Hz. A module with IEC inlet is fitted by default. An
optional module is provided for permanent installation, with knockout holes
to accept a cable gland.
⚠Replacement of the IEC ac inlet module and mains
wiring for permanent installation must be performed by a
qualified electrician. See instructions later in this guide.
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A164-W LCD User Guide
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AP11448 Issue 3d
Front panel
Input sockets - Balanced XLR mic/line inputs with +48V Phantom Power
indicator. The preamps are built into the A164 WALL LCD and their Gain,
Pad and +48V are controlled from the 4REA4 via the A3232 port.
The +48V indicator detects voltage at the socket whether supplied by the
A164 WALL LCD or received from an external source.
Output sockets - Balanced XLR outputs operating at nominal +4dBu level.
Vents - Ensure good ventilation at the front of the unit. Avoid obstruction of
vents while operating. Avoid dirt or liquid ingress
LCD Displays –Display illuminated socket names or channel assignment
–default state is not illuminated. Illumination is switched off automatically
after a pre-determined timeout period.
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A164-W LCD User Guide
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AP11448 Issue 3d
Display Mode Switch –Press once to illuminate displays, press again to
change the display mode from socket names to colour coded channel
assignment. Each subsequent press toggles the mode.
Installation –mounting
WARNING
To prevent injury, this apparatus must be securely attached to the floor/wall
in accordance with the installation instructions.
Mounting on a wall - Use the mounting frame AA11529 in the orientation shown
below. Fix the frame to the wall using appropriate fixings or screws for the type of
wall, then align the threaded inserts on the sides of the A164 WALL LCD with the
frame and secure the unit in place with the 6 x M4 T20 screws (AB11238) provided.
Flush mounting in a wall - Use the mounting frame AA11529 in the orientation
shown below. Align the threaded inserts on the sides of the A164 WALL LCD with
the frame and secure the unit in place with the 6 x M4 T20 screws provided.
Connect the power and Cat5 cable/s, then fix the assembly to the wall using
appropriate fixings or screws for the type of wall.
Mounting in a box - The A164 WALL LCD will fit a suitably sized standard
IP10/NEMA Type 1 metal box or equivalent.
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A164-W LCD User Guide
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AP11448 Issue 3d
Floor box / stage pocket / dip trap - The A164Wall LCD must be mounted in
accordance with local installation and wiring regulations.
Permanent wiring installation with the cable gland module
⚠Replacement of the IEC ac inlet module and mains
wiring for permanent installation must be performed by a
qualified electrician and carried out in accordance with
local wiring regulations.
To replace the IEC module:
•Remove the 4 screws using a Torx®T8 driver.
•Pull out the module and unplug the internal harness at the bottom of the
assembly.
•Fit a suitable cable gland or grommet appropriate to the cable wire size to
the gland module plate.
•Run the mains cable through the gland. Minimum cable size 0.75mm² or
20AWG.
•Wire the mains cable to the terminal connector on the gland module,
paying attention to polarity and earth grounding as indicated on the
module.
•Securely tighten the cable gland around the cable.
•Re-plug the internal harness into the bottom of the gland module.
•Secure the module to the unit with the 4 x T8 screws.
Terminal for
mains
connection
Harness for
internal
connection

A164-W LCD User Guide
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AP11448 Issue 3d
⚠POWER DISCONNECTION
The mains supply disconnect device is the installation all pole circuit
breaker or the switched fused outlet which must be labelled and must be
accessible so as to be readily operable when the appliance is in use.
Dimensions

A164-W LCD User Guide
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AP11448 Issue 3d
Specification
Mic/Line XLR Inputs
Balanced XLR, +48V phantom power
Mic/Line Preamp
Fully recallable
Analogue Gain
+5 to +60dB, 1dB steps
Pad
-20dB Active PAD
Maximum Input Level
+30dBu (PAD in)
Input Impedance
>4kΩ (Pad out), >10kΩ (Pad in)
Mic EIN
-127dB with 150Ω source
Analogue XLR Outputs
Balanced, Relay protected
Output Impedance
<75Ω
Nominal Output
+4dBu = 0dB meter reading
Maximum Output Level
+22dBu
Residual Output Noise
-93dBu (22Hz-22kHz)
Operating Temperature Range
0°C to 35°C (32°F to 95°F)
Power
Mains Voltage Operating
Range
100-240V AC, 50/60Hz
Mains Power Consumption
35W max
DC Input
12V DC, 3A max
Dimensions and Weight
Width x Depth x Height x Weight
A164 WALL LCD
210 x 87 x 250 mm x 3.5kg
(8.27 x 3.43 x 9.84 inches x 7.7 lbs)

A164-W LCD User Guide
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AP11448 Issue 3d
Read the Safety Instructions Sheet included with the product and the information printed on the panel before operating.
A limited one year manufacturer’s warranty applies to this product, the conditions of which can be found at:
http://www.digico.biz/docs/about/legal.shtml
By using this DiGiCo product and the software within it you agree to be bound by the terms of the relevant End User
Licence Agreement (EULA), a copy of which can be found at: http://www.digico.biz/docs/about/legal.shtml
Check the DiGiCo website for the latest documentation and software updates
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