Amphenol Procom PRO-ARU4G User manual

19” Rack-mountable
Active Receiver Multicoupler
type
PRO-ARU4G
PRO-ARU8G
User Manual

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Title:
User Manual for 19” Rack-mountable Active Receiver Multicoupler type PRO-ARU…G (…: 4 or 8)
Document version:
Reviewed: 1r0
Reviewed: 1r1
Document Change Record
Issue
Date
Sheet (s)
Description of change
Alterations
endorsed and
1r0
05-10-2016
All
First release
SMN
1r1
09-07-2018
All
New brand
JF
Procom Contacts:
Adnan Ahmad
Director of Engineering
Customer service
Phone: [phone]
Phone: [phone]
Direct: ([phone]
[email protected]
[email protected]

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List of Contents
1 Preface.............................................................................................................................4
2 Safety precautions ............................................................................................................4
2.1 Environment ..............................................................................................................4
2.2 Protective earth.......................................................................................................... 4
2.3 Equipotential bonding ................................................................................................4
2.4 Fuses......................................................................................................................... 4
2.5 Power on/off ..............................................................................................................4
2.6 Reading this manual..................................................................................................4
3 Introduction.......................................................................................................................5
4 Circuit description .............................................................................................................5
4.1 Amplifier/splitter modules...........................................................................................5
4.2 Power supply.............................................................................................................6
4.3 Power supply backup function ................................................................................... 6
5 Installation.........................................................................................................................6
5.1 Front view..................................................................................................................6
5.2 Rear view...................................................................................................................6
5.2.1 Rear view PRO-ARU4G...................................................................................... 7
5.2.2 Rear view PRO-ARU8G...................................................................................... 7
5.3 Connection of power supply voltage .......................................................................... 7
5.3.1 Mains connection................................................................................................7
5.3.2 Protective earth...................................................................................................7
5.3.3 DC power connection..........................................................................................7
5.4 Equipotential bonding ................................................................................................ 8
5.5 Connection of antenna...............................................................................................8
5.6 Connection of receivers.............................................................................................8
5.7 Mounting....................................................................................................................8
6 Operating instructions.......................................................................................................8
6.1 Power on LED............................................................................................................8
6.2 Maintenance..............................................................................................................8
7 Trouble shooting...............................................................................................................9
7.1 Spare parts................................................................................................................9
8 Technical Specifications....................................................................................................9
9 Block Diagrams...............................................................................................................10
9.1 Block diagram PRO-ARU4G.................................................................................... 10
9.2 Block diagram PRO-ARU8G.................................................................................... 10

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1 Preface
This user manual covers the Amphenol Procom Active Receiver Multicoupler models:
PRO-ARU4G and PRO-ARU8G.
In the subsequent chapters, for the sake of clarity:
Where the descriptions are valid for both receiver multicoupler models, the figure
in the model designation is replaced by “…”, as example: PRO-ARU…G.
2 Safety precautions
2.1 Environment
The PRO-ARU…G is intended for indoor use only.
Do not allow the unit to be wet.
Do not operate the unit at temperatures outside the specified range -10 °C to +50 °C.
Do not place the unit in a corrosive environment.
2.2 Protective earth
The main earthing point is the center contact of the IEC60320-1 C14 mains power inlet.
(See chapter 4.2 and 4.3.2)
Connection to protective earth is provided via the 3-wire IEC mains power cord.
As safety relies on connection to protective earth,
the PRO-ARU…G must be connected to an earthed mains socket-outlet.
2.3 Equipotential bonding
It is strongly recommended that all interconnected conductive accessible parts in a
system are connected to an equipotential bonding system.
The center terminal of the 3 pole screw terminal block on the rear side is intended for
equipotential bonding. See chapter 5.4.
2.4 Fuses
Individual fuses are provided for both the mains voltage and the DC voltage.
The fuse holders are located on the rear side next to the supply voltage connectors.
On the top plate next to the fuse holders are marked the fuse specifications.
To maintain the safety level, a blown fuse must be replaced by a fuse of equal size,
type and value. Refer to chapter 7.1: “Spare parts”.
2.5 Power on/off
No power on/off switch is provided on the PRO-ARU…G.
Therefore, as soon as power is connected, the equipment will be immediately active
and the green power on LED on the front plate will light, indicating power is on.
The mains power cord (mains plug or socket) serves as a mains switch and
either plug or socket of the cord must be easily accessible.
2.6 Reading this manual
Before installing or replacing of the PRO-ARU…G, this entire manual should be read
and understood. Incorrect installation and usage may damage the equipment.
This equipment is not suitable for use in locations
where children is likely to be present.

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3 Introduction
The typical function of an active receiver multicoupler is to distribute a received
antenna signal to a number of receivers without introducing any signal loss and
interacting between the receivers.
A passive power splitter could be used to split the antenna signal for the required number
of receivers. However, this way each receiver will only get a part of the received signal
power, and the sensitivity of the individual receivers will be reduced.
If an active low-noise receiver multicoupler is used for antenna signal distribution, an
antenna signal virtually identical to the original one will be applied to each receiver, as if
the particular receiver was directly connected to the antenna exclusively.
This manual contains description, installation and documentation of the
Amphenol Procom types PRO-ARU4G and PRO-ARU8G, which are active receiver
multicouplers with one input (ANT) intended for connection of RF signal (antenna signal)
and 4 or 8 identical outputs (RX1 to RX4/8) intended to provide RF signal (antenna
signal) for a similar number of individual receivers.
PRO-ARU…G series has a frequency range of 698 MHz to 2700 MHz and can be used
at any frequency or frequency band within this range.
The PRO-ARU…G multicouplers can also be used for buffering and splitting any other
kind of RF signal within the specified signal dynamic range of the equipment.
4 Circuit description
4.1 Amplifier/splitter modules
The PRO-ARU…G multicoupler contains a dedicated RF amplifier system, and a
power splitter circuitry corresponding to the particular number of outputs.
The amplifier system compensates for the n-way splitter loss + circuitry insertion loss.
In both PRO-ARU4G and PRO-ARU8G, the ANT signal feeds an amplifier, which is
provided with a 4-splitter- or 8-splitter circuitry at the output. The outputs from the
splitter circuitry form the 4 or 8 identical RX outputs.
The power splitter circuitry is of the Wilkinson multi-section type and provides high
isolation between the individual RX outputs, ensuring no mutual coupling between the
connected receivers.
See chapter 9: Block diagrams.
The RF amplifier has low noise figure to ensure lowest possible signal-to-noise ratio
deterioration of the distributed RX signal.
Simultaneously, the amplifier has very good large signal capabilities, in order to avoid
intermodulation between strong signals in the distributed RF signal spectrum.
In order to maintain a high input dynamic range of the connected receivers (ability to
withstand strong antenna signals), RF gain from ANT input to RX output is selected to
be low, nominally +2 dB.
This gain value is factory adjusted and gain adjustment is not user accessible.

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4.2 Power supply
The PRO-ARU…G is provided with a power supply unit which supplies DC voltage for
the amplifier circuitry.
The power supply unit both has an AC mains voltage input for 230 – 240 VAC
and a DC voltage input for 12 VDC or 24 VDC, depending on model.
The power supply is of the galvanically separated type, in order to avoid unwanted
ground loops etc.
4.3 Power supply backup function
The power supply unit is provided with backup function.
If DC voltage (12 VDC or 24 VDC depending on model) from e.g. a rechargeable
battery is connected to the multicoupler together with AC mains voltage, the DC voltage
source will function as power backup.
If mains voltage is applied to the multicoupler, it will operate on the mains voltage and
the DC voltage will be internally switched off.
If the mains voltage fails, the multicoupler will automatically switch over to operate on
the DC voltage thus providing an uninterrupted service.
The multicoupler can also operate directly on the DC voltage, if no mains voltage is
connected.
5 Installation
The PRO-ARU…G are housed in a standard 19 “ rack module.
5.1 Front view
The front plate is identical on both receiver multicoupler models.
The height of both PRO-ARU4G and PRO-ARU8G are 1HU (44.45 mm).
The front plate is provided with 2 pcs. 7 x 10 mm oval mounting holes in each side,
intended for rack mounting of the multicoupler, using M6 screws.
Further, a green power on LED is provided.
Below is shown the identical front view of both models.
5.2 Rear view
The rear panel of the multicouplers is provided with ANT and RX RF connectors,
mains power and DC power inlets, and holders for both mains and DC fuses.
Below is shown the rear view of the 2 multicoupler models:
POWER
Receiver Distribution Panel
Power on LED
Mounting
holes
Mounting
holes

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5.2.1 Rear view PRO-ARU4G
5.2.2 Rear view PRO-ARU8G
5.3 Connection of power supply voltage
5.3.1 Mains connection
The PRO-ARU…G is provided with a 3-terminal IEC60320-1 C14 (male) inlet for
mains power connection. The mains inlet is located on the rear side. See rear view above.
Applied mains voltage must be within the range 207 – 264 VAC (230 – 240 V ±10 %).
A 3-wire IEC power cord must be used for mains voltage connection.
5.3.2 Protective earth
The main earthing point is the center contact of the mains power inlet.
See PRO-ARU…G rear view above.
Connection to protective earth is provided via the 3-wire IEC power cord.
The PRO-ARU…G therefore must be connected to an earthed mains socket-outlet.
5.3.3 DC power connection
The PRO-ARU…G is provided with a 3 pole screw terminal block (DC inlet)
for connection of 12 VDC voltage or 24 VDC voltage (depending on model).
The terminal block is located on the rear side. See rear view above.
Applied DC voltage must be within the range 10.8 – 14.4 VDC (12 VDC model)
or 18 – 28 VDC (24 VDC model).
On the top plate next to the screw terminal block are indicated the polarity of the
screw terminals:
DC supply voltage (if used) must be applied correctly to the receiver multicoupler.
If the polarisation of the applied DC voltage is wrong, the DC fuse will blow.
The fuse must be replaced by a fuse according to chapter 7.1: “Spare parts”.
+–
+–
(Protective
earth)
ANT
RX1 RX2 RX3 RX4 RX5 RX6 RX7 RX8
DC
fuse
Mains
fuse
12 VDC
or
24 VDC
inlet
Mains
power inlet
(Equipotential
bonding)
+–
(Protective
earth)
ANT
RX1 RX2 RX3 RX4
DC
fuse
Mains
fuse
12 VDC
or
24 VDC
inlet
Mains
power inlet
(Equipotential
bonding)

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5.4 Equipotential bonding
The center terminal of the 3 pole terminal block marked is intended for
equipotential bonding.
It is strongly recommended that all interconnected conductive accessible parts in a
system are connected to an equipotential bonding system, in order that no hazardous
touch voltage appears on exposed conductive parts.
5.5 Connection of antenna
The antenna (or other RF source) shall be connected to the input connector marked
“ANT” on the rear edge of the receiver multicoupler top plate by means of a suitable
coax cable.
Be aware that the maximum RF input level of +20 dBm is not exceeded, in order to
avoid damaging of the RF amplifier.
As the ANT connector shield is connected to chassis, the coax cable shield will
automatically be included in the equipotential bonding (if used).
5.6 Connection of receivers
The individual receivers’ antenna inputs (RF inputs) shall be connected by a suitable
coax cable to the output connectors marked “RX1 to 4” or “RX1 to 8” (depending on
model) on the rear edge of the receiver multicoupler top plate.
If the receiver multicoupler has unused RX output ports, these should be terminated
with a 50 Ω
dummy load (min. 250 mW).
5.7 Mounting
By rack mounting, screws must be mounted in all 4 mounting holes in the front plate.
When mounted in a fully enclosed cabinet, adequate ventilation or heat path shall be
provided in order to keep the housing surface temperature below 50 °C.
6 Operating instructions
As soon as mains supply voltage or DC supply voltage is applied to PRO-ARU…G,
it will be immediately active.
Normal operational conditions do not require any adjustments or settings of the
multicoupler.
6.1 Power on LED
When power is connected to the PRO-ARU…G, the green power on LED on the
front plate will immediately light and indicate the multicoupler is active.
6.2 Maintenance
No maintenance of the PRO-ARU…G is normally needed.
However, if any malfunction of the multicoupler occurs, please refer to chapter 7:
“Trouble shooting” below.
If the instructions in the Trouble shooting chapter is insufficient, please contact
nearest Amphenol Procom dealer or Amphenol Procom for further information.

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7 Trouble shooting
7.1 Spare parts
Article Value
Amphenol
Procom
Spare part no.
Fuse for 230 VAC T315mAL250V 5x20 mm 661001008
Fuse for 12 VDC/24 VDC T2AL250V 5x20 mm 661000047
8 Technical Specifications
Please refer to the PRO-ARU…G datasheet on www.amphenolprocom.com
Symptom Possible cause Action
Power on LED off Supply voltage not
connected or off. Connect supply voltage.
By DC voltage operation,
wrong DC polarity.
Check DC voltage and
polarity and reverse
connections if necessary.
AC or DC fuse blown. Check and replace fuse(s).
Symptom Possible cause Action
Reduced receiver
sensitivity Supply voltage not connected or off. Connect supply voltage.
AC or DC fuse blown,
power on LED off Replace fuse(s).
Other fault symptoms Contact Amphenol Procom

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9 Block Diagrams
9.1 Block diagram PRO-ARU4G
9.2 Block diagram PRO-ARU8G