AUDAC APG20MK2 User manual

APG20MK2
User Manual
www.audac.eu

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Index
Introduction 5
Precautions 6
Safety requirements 6
Caution servicing 7
EC Declaration of Conformity 7
Waste of Electrical and Electronic Equipment (WEEE) 7
Chapter 1: Connections and connectors 9
Connection standards 9
Chapter 2: Overview APG20MK2 11
Front panel 11
Rear panel 12
Chapter 3: Connections 13
Chapter 4: Technical specifications 15

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Introduction
Line & microphone audio receiver gateway
The APG20MK2 is an audio receiver gateway converting databus transmitted audio
signals to standard line and microphone level signals. The audio output of the APG20
can be fed to regular inputs on audio amplifiers, pre-amplifiers, mixers or many more.
In combination with the matching input modules (WLI and WMI) it offers a solutions
for two channel audio transmission (line & microphone) covering distances up to 300
meters over standard UTP CAT5E (or better) cabling. Distances up to 600 meters can
be achieved when applying additional power supplies.
Due to the differential bus input with increased voltage levels, the received signals are
insensitive for noise, interference and attenuation over the long transmission distance.
This offers the appropriate solution for high quality audio transmissions in long distance
applications while maintaining high quality audio reproduction.
The bus input carrying both audio channels, an RS485 data channel and 24 Volts
distribution to the transmitter end is implemented using an RJ45 connector. The audio
outputs are performed using dual RCA (line) and female XLR (microphone) connections.
The XLR output is accompanied with a switch allowing selection between a -40 dB
and 0 dB output level.
The signals carried on the RS-485 pair of the databus are linked to an RJ45 output
connection, allowing daisy chaining to the controlled equipment. A variety of optionally
available mounting brackets are allowing desk, closet or 19” equipment rack installation.

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Precautions
READ FOLLOWING INSTRUCTIONS FOR YOUR OWN SAFETY
• ALWAYS KEEP THESE INSTRUCTIONS FOR FUTURE REFERENCE. NEVER
THROW THEM AWAY
• ALWAYS HANDLE THIS UNIT WITH CARE
• CLEAN ONLY WITH DRY CLOTH
• HEED ALL WARNINGS AND FOLLOW ALL INSTRUCTIONS
• NEVER EXPOSE THIS EQUIPMENT TO RAIN, MOISTURE, ANY DRIPPING OR
SPLASHING LIQUID. NEVER PLACE AN OBJECT FILLED WITH LIQUID ON TOP
OF THIS DEVICE
• DO NOT INSTALL THIS UNIT NEAR ANY HEAT SOURCES SUCH AS RADIATORS
OR OTHER APPARATUS THAT PRODUCE HEAT
• DO NOT PLACE THIS UNIT IN ENVIRONMENTS WITH A HIGH LEVEL OF DUST,
HEAT, MOISTURE OR VIBRATION
• THIS UNIT IS DEVELOPED FOR INDOOR USE ONLY. DO NOT USE IT OUTDOORS
• PLACE THE UNIT ON A STABLE BASE OR MOUNT IT IN A STABLE RACK
• ONLY USE ATTACHMENTS & ACCESSORIES SPECIFIED BY THE
MANUFACTURER.
• UNPLUG THIS APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED
FOR LONG PERIODS OF TIME
• CAREFULLY CHECK THE UNIT’S CONDITION AFTER UNPACKING.
IF THERE IS ANY DAMAGE TO THE CARTON BOX OR THE UNIT ITSELF,
INFORM YOUR VENDOR IMMEDIATELY.
• ONLY CONNECT THIS UNIT TO A MAINS SOCKET OUTLET WITH PROTECTIVE
EARTHING CONNECTION
• THE INSTALLATION, CONNECTION AND CONFIGURATION OF THE DEVICE
SHOULD BE DONE BY QUALIFIED TECHNICIANS

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CAUTION - SERVICING
This product contains no user serviceable parts. Refer all servicing
to qualified service personnel. Do not perform any servicing
(unless you are qualified to do so.)
EC DECLARATION OF CONFORMITY
This product conforms to all the essential requirements and
further relevant specifications described in following directives:
2004/108/EC (EMC) and 2006/95/EC (LVD)
WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)
The WEEE marking indicates that this product should not be
disposed with regular household waste at the end of its product
life. This regulation is created to protect both the environment
and human health.
This product is developed and manufactured with high quality
materials and components which can be recycled and/or reused.
Please dispose of this product at your local collection point or
recycling centre for electrical and electronic waste. Do this to
make sure that the product is recycled in an environmental friendly
way, and help to protect the environment in which we all live.
CAUTION
The symbols shown are internationally recognized symbols that warn about potentional
hazards of electrical products. The lightning flash with arrowpoint in an equilateral
triangle means that the unit contains dangerous voltages. The exclamation point in
an equilateral triangle indicates that it is necessary for the user to refer to the users
manual.
These symbols warn that there are no user serviceable parts inside the unit. Do not
open the unit. Do not attempt to service the unit yourself. Refer all servicing to qualified
personnel. Opening the chassis for any reason will void the manufacturer’s warranty.
Do not get the unit wet. If liquid is spilled on the unit, shut it off immediately and take
it to a dealer for service. Disconnect the unit during storms to prevent damage.

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Chapter 1
Connections and connectors
CONNECTION STANDARDS
The in- and output connections for AUDAC audio equipment are performed
corresponding to international wiring standards for professional audio equipment.
Cinch (RCA):
For unbalanced line output connections
Tip: Signal Sleeve: Ground
White: Left Red: Right
XLR:
For balanced line / microphone output connections
Pin 1: Ground
Pin 2: Signal +
Pin 3: Signal -
RJ45 Bus input (RS485, Audio, +24 V DC):
For connection to audio input & control units
Pin 1 White-Orange AUDIO WLI +
Pin 2
Orange AUDIO WLI -
Pin 3 White-Green +24 V DC
Pin 4 Blue RS485 A
Pin 5 White-Blue RS485 B
Pin 6 Green GND
Pin 7 White-Brown AUDIO WMI+
Pin 8 Brown AUDIO WMI-

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RJ45 Bus output (RS485):
For connection to Remote Wall Mixers (Audio Input & Mixing)
Pin 1 White-Orange N/C
Pin 2 Orange N/C
Pin 3 White-Green N/C
Pin 4 Blue RS485 A
Pin 5 White-Blue RS485 B
Pin 6 Green GND
Pin 7 White-Brown N/C
Pin 8 Brown N/C
ATTENTION
The twisted pair cabling must always be connected ‘straight’.
In case of self made cabling, it must be wired as described
above, to make the system work properly.

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Chapter 2
Overview APG20MK2
Front panel
The front panel of the APG20 MK2 contains all outputs on which audio & data connections
for bus transferred signals are made available.
1) Microphone output:
The microphone signal (transferred by brown twisted pair) is balanced and made
available on the XLR output connector on the left side. This output is accompanied
with a slide switch, allowing switching the signal reference level. When switched to
-40 dB, the output matches signal level to be fed to standard microphone inputs,
while 0 dB allows the signal to be fed to standard line input connections.
2) Line output:
The line level signal (transferred by orange twisted pair) is made available on the dual
RCA output at the centre position. This is an unbalanced dual-mono line level signal,
allowing insertion to stereo line level inputs.
3) RS485 output:
The RJ45 connection on the right side of the front panel is carrying the RS485 signal
which is available on the RJ45 bus input connection. This connection allows the
control signal to be daisy-chained to any other controlled device.

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Rear panel
The rear panel of the APG20 MK2 contains the 24 Volts DC input connection, together with
the RJ45 bus input connection whereto the twisted pair bus cabling has to be connected.
1) 24 Volts power connector:
The 24 Volts power supply connection is implemented using a terminal block
connection on the left side APG20MK2‘s rear panel. The included power supply
(PSD241) should be connected here. This input is accompanied with a green ‘RUN’
indicator LED which will illuminate when the device is operational.
Mind the polarity when connecting the power supply.
2) RJ45 Bus input connection:
The RJ45 connection connects the remote input and control modules to the
APG20MK2. This connection carries two analogue audio pairs, an RS485 data pair
and 24 Volts distribution to the transmitter end. More information over the connection
possibilities can be found in the next chapter of this instruction manual.

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Chapter 3
Connections
The APG20MK2 allows the connection of two matching input modules and one or more
digital control panels. To guarantee a proper functioning of the system, it is important
that the connection requirements and limitations are always carefully followed.
The required cabling specification is CAT5E (or better) UTP twisted pair cabling. In
situations containing high levels of electromagnetic interference, shielded cable can
improve the performance of the system.
IMPORTANT
Always make sure the devices are powered off when connecting or disconnecting any
of the inputs on the APG20MK2.
The maximum cable length is depending of the number connected input modules on
the bus cabling (depending of the voltage drop on the bus cabling). When only one input
unit is connected, distances up to 300 meters can be achieved. When two input units
are connected, the maximum cable distance is limited to 150 meters.
In case distances higher than 300 meters (or 150 meters with two input modules) are
required, an additional junction box (ARJ03P) with power supply has to be applied to
the system, allowing a total distance of up to 600 meters.
The example diagrams shown on the following page are indicating some connection
diagrams for typical application setups, including their cable length limitations.

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CAT5E
WLI / WMI
300 m
Example 1: One input module connected
Maximum cable length: 300 meter
CAT5E
WLI
150 m
WMI
Example 2: Two input modules connected
Maximum cable length: 150 meter
CAT5E
WLI
450 m
WMI
ARJ03P
150 m
Example 3: Two input modules with junction box + external PSU connected
Maximum cable length: 600 meter (450 + 150)

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Chapter 4
Technical specifications
Inputs Type Audio / RS485 / 24V DC Bus
Connectors RJ45
Output Type Microphone output
Connectors Male XLR
Level Switchable 0 dB / -40 dB
Type Line output
Connectors Dual RCA
Level 0 dB
Type RS485 data link output
Connectors RJ45
Power consumption 1.2 Watt
Connection standard TIA/EIA T568B
Required cabling UTP CAT5E
Max cable length 300 meter (without external PSU)
600 meter (with external PSU)
Power supply 24V DC
PSD241 switching power supply included
100 ~ 240V AC / 47~63 Hz
Dimensions (W x H x D) 108 x 44 x 165 mm
Weight 0.76 Kg
Packaging Carton box
Shipping weight & Volume 1.08 Kg - 0.0078 Cbm
Compatible devices WLI18 Wall line input unit
WMI18 Wall microphone input unit
Optional Accessories ARJ03P Junction box
PSD24x External power supply
MBS1xx Mounting brackets

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Notes