RFI RX1317-3408-31 Series User manual

User’s Manual
Receiver Multicoupler
RX1317-3408-31
RX3852-3408-31
RX6996-3408-31
Series
Base Line 1.1
SEM-44602-1

Receiver Multicoupler User’s Manual
Asia Pacific | EMEA | Americas 2
Company Overview
RFI has been serving the needs of the wireless communications market for over 40 years. First founded as a
manufacturer of antenna systems, RFI has grown to be a key player in the development, manufacturing and
distribution of wireless technology and energy products. Through our extensive network of resellers, systems
integrators, and retail outlets, RFI is a key supplier to both industry and Government.
Our research and manufacturing facilities have talented people, sophisticated test equipment, state of the art
software with class leading manufacturing systems and techniques. Additionally, we have in place a quality
management program which is certified to ISO9001, environmental management system certification to ISO14001
and occupational health and safety standard AS4801 giving you complete confidence in everything we do.
RFI’s products are truly innovative and as a result we are active around the globe taking our Australian designed and
manufactured products to key markets in Asia Pacific, the Americas and EMEA regions via offices ‘in-region’ in
addition to exporting directly to in-excess of 80 countries.
One of RFI’s key principals is to remain totally customer focused as we recognise our future depends on the success
of our customers. We know that to be chosen as your supplier we must add value to your business and to achieve
this we will work hard to deliver the best product when and where you need it and back this up with the very best
technical support available.

Receiver Multicoupler User’s Manual
Asia Pacific | EMEA | Americas 3
Document Number SEM-44602-1
Copyright 2013 RF Industries Pty Ltd
First Printing: 10th February 2022
Version Number
Version Date
1.1
10th February 2022
_____________________________________________________________________________
Acknowledgements
All rights for third party information remain with their originator.
Disclaimer
Product part numbering in photographs and drawings is accurate at the time of printing. Part number labels on RFI
products supersede part numbers given within this manual. Information is subject to change without notice.

Receiver Multicoupler User’s Manual
Asia Pacific | EMEA | Americas 4
TABLE OF CONTENTS
SAFETY ..................................................................................................................................................6
1. GENERAL DESCRIPTION..............................................................................................................7
2. CONNECTORS, INDICATORS AND LABELLING.....................................................................8
3. ELECTRICAL AND MECHANICAL SPECIFICATIONS.........................................................10
4. ORDERING INFORMATION........................................................................................................13
5. INTERCONNECTION DIAGRAMS.............................................................................................14
6. TYPICAL RECEIVER MULTICOUPLER CONFIGURATIONS.............................................17
Configuration 1 –Up to 8 Outputs.............................................................................................................17
Configuration 2 –9 Outputs.......................................................................................................................17
Configuration 3 –Up to 16 Outputs...........................................................................................................18
Configuration 4 –Up to 64 Outputs...........................................................................................................18
Configuration 5 –Up to 128 Outputs.........................................................................................................19
7. UNPACKING....................................................................................................................................20
8. FIRMWARE LICENSE AGREEMENT........................................................................................21
9. INSTALLATION..............................................................................................................................22
10. OPERATION..................................................................................................................................24
11. COMMISSIONING........................................................................................................................25
12. SETUP AND OPERATION...........................................................................................................26
Switch Control Mode ..................................................................................................................................26
USB Control Mode......................................................................................................................................27
Auto Gain.....................................................................................................................................................27
Using the CLI...............................................................................................................................................28
CLI Syntax...................................................................................................................................................28
CLI Commands...........................................................................................................................................29
13. CONNECTORS..............................................................................................................................32
14. MAINTENANCE, INSPECTION, FAULTFINDING AND REPAIR ADVICE......................33
15. FREQUENTLY ASKED QUESTIONS (FAQ)............................................................................34
16. SUPPORTING INFORMATION..................................................................................................35
17. USER NOTES:................................................................................................................................36

Receiver Multicoupler User’s Manual
Asia Pacific | EMEA | Americas 5
Notice
The information contained in this document is subject to change without notice.
RF Industries Pty. Ltd. makes no warranty of any kind with regard to this material, including but not limited
to, the implied warranties of merchantability and fitness for a particular purpose. RF Industries Pty Ltd shall
not be liable for errors contained herein or for incidental or consequential damages in connection with the
furnishing, performance, or use of the material.
All information contained in this manual has been reviewed. However RF Industries Pty Ltd accepts no liability for
any omissions, errors, or construed information.
2012, RF Industries Pty Ltd. All rights reserved. Reproduction, adaptation, or translation without prior
written permission is prohibited except as allowed under copyright laws.
For further information or help with this product contact your nearest RFI sales office or through the
following;
Region
USA
EMEA
ASIA PACIFIC
Sales email
[email protected]
[email protected]
[email protected]
Tech Support
[email protected]
[email protected]
[email protected]
Telephone Intl
[phone]
[phone]
[phone]
Telephone local
330 486 0706
01869 255 772
1300 000 RFI
Fax Intl
+ 1 [phone]
-
[phone]
Web
rfiamericas.com
rfiemea.com
rfi.com.au

Receiver Multicoupler User’s Manual
Asia Pacific | EMEA | Americas 6
Safety
Only a suitably qualified person should be allowed to install and commission this equipment
after becoming familiar with all the safety and installation instructions contained in this
User’s Manual. It will be assumed that a qualified person will have a fundamental
knowledge of the installation’s objectives and use common sense where safety warnings are
not necessarily explicit.
On unpacking the equipment, familiarise yourself with equipment, reading and following all warning labels attached to
the equipment. Please ensure that the warning labels are kept in a legible condition and replace if necessary.
Ensure all general, regional, and site-specific installation and safety regulations are adhered to when working on high
voltage installations, as well as regulations covering use of tools and personal protective equipment.
It is the responsibility of the network operator or service provider to have in place and implemented compliant
Occupational Health and Safety (OHS) / Work Health and Safety (WHS) procedures as applicable, detailing
prevention measures to avoid health hazards which may be associated with radiation from the antenna(s) connected
to this equipment. Please ensure familiarisation and compliance to country specific regulations on RF exposure.
It is recommended to ensure that access to this equipment is restricted to qualified personnel only.
WARNING: There is no on/off switch on this equipment –it becomes active as soon as
DC power is connected or the connected AC plugpack is switched on at the AC outlet.
Do not allow the unit or any associated equipment to become wet or to be subjected to
temperatures outside the specified operating temperature range.
Do not open the unit as there are no user serviceable parts inside.
All faulty equipment should be returned to RFI for repair.
Do not operate the unit near any flammable substances or in a flammable
atmosphere.
Ensure that all connectors are fully mated.
Under certain adverse conditions the external surfaces of the unit may become hot
and should not be handled without some form of protection, such as gloves.
Permanently hardwire one of the Protective Earthing points on the back panel to the
premises protective earth wiring. This connection provides protection from hazardous
and transient voltages.
Before installing or replacing this equipment the entire manual should be read and
understood. The user needs to supply the appropriate DC voltage to the equipment
and install it accordance with this manual.
Incorrect installation can damage the equipment and may cause injury to the user.

Receiver Multicoupler User’s Manual
Asia Pacific | EMEA | Americas 7
1. General Description
Overview
The RX series Receiver Multicouplers (RxMux) are full-featured, high performance active receiver multicouplers
designed to distribute a signal from a single antenna signal to multiple receivers without loss and providing isolation
between the RF outputs. In a typical installation the RxMux will be fed from a receive antenna via a frequency
selective band pass filter selected for the particular application and its passband and selectivity performance
requirements.
The RFI RxMux design is based on a low-noise, high-IP3 quadrature amplifier that uses two parallel active amplifier
circuits for redundancy. This design technology allows continued operation, with minimal performance degradation, if
either of the active amplifier signal paths becomes faulty - providing increased resiliency to faults with the networks
receive system and a resulting higher operational availability.
The Rx sub-system gain can be manually set using switches on the back panel. The gain and various other parameters
(including fault status) can be configured and monitored using a text-based Command Line Interface (CLI) via the USB
interface.
If selected, firmware version 1.1 and above offers an innovative Auto Gain feature that will increase the gain of the
serviceable side of the balanced quadrature amplifier by 6dB if one of its RF paths becomes faulty, restoring the
system’s gain to its configured value. If 6dB of available amplifier gain is not available above the currently-configured
gain value, then the Auto Gain feature will apply the maximum available remaining gain to restore as much of the
configured gain value as is achievable –at all times providing the best available system performance until normal
operation can be restored. When in this Auto Gain mode of operation, the amplifiers’ fault state is continually
monitored and if either amplifier’s fault clears, the RxMux will restore itself to normal gain operation. Auto Gain
operation is configured via the CLI.
Front and rear panel LED indicators show the status of power, faults, and USB or switch gain control.
Alarm relay contacts are provided that can be monitored to provide an indication of a fault condition. DC-operation is
standard, that may be sourced from an existing power supply, or from an optional external power supply for AC-operation if
desired.
An optional Expansion Multicoupler can be added to expand the number of outputs from 8 to 16, each with equal gain. If
more outputs are required, then further Expansion Multicouplers can be added to provide up to 128 outputs.
Figure 1 - RxMux Block Diagram
Diversity Receive and Dual-Receiver Systems
Diversity receive and dual-receiver requirements systems can be implemented by using multiple RxMux units (i.e.
one on each receive signal path).

Receiver Multicoupler User’s Manual
Asia Pacific | EMEA | Americas 8
2. Connectors, Indicators and Labelling
Front Panel Layout
Figure 2 –Front Panel Layout
1. Switch Control LED Yellow LED lights when the gain is controlled by the GAIN switches on the rear panel.
2. USB Control LED Yellow LED lights when the unit is controlled via the USB interface.
3. Fault LED Red LED lights when a fault is present.
4. Power LED Green LED lights when correct polarity power is connected.
Rear Panel Layout
Figure 3 –Rear Panel Layout
1. Power LED Green LED lights when power is connected.
2. Fault LED Red LED lights when a fault is present.
3. USB Connector Type B connector to connect to a PC.
4. Gain Switches Rotary switches to manually set the gain.
5. Expansion Port N(f) connector to connect to an optional Expansion Multicoupler.
(Note: not fitted on model RX3852-3408-33-48)
6. RF Output One of eight N(f) connections to the receivers.
7. RF Input N(f) connection to the antenna (usually via a BP filter)
8. Power Connector 2-way Phoenix connector to connect to the DC power supply.
9. Alarm Connector 3-way Phoenix connector to connect to external alarm devices.
10. USB Control LED Yellow LED lights when the unit is controlled via the USB interface.
11. Gain Control LED Yellow LED lights when the gain is controlled by the GAIN switches.
12. Earth Screw M5 screw for connection to an earth point.
13. Earth Stud M6 stud for connection to an earth point.
EXP PORT
RF OUTPUTS
ALARM
POWER
FAULT
POWER
CONTROL
RF INPUT
USB
GAIN
1 2 3 4 5 6 7
8 9 10 11 12 13
RECEIVER MULTICOUPLER
USB
POWER
SWITCH
FAULT
1 2 3 4

Receiver Multicoupler User’s Manual
Asia Pacific | EMEA | Americas 9
Serial Number Label
The Serial number label can be found on the side of the unit. This label gives the following information:
The Model Number
The Frequency Band the unit operates over.
(Note: VHF and UHF models also have an ‘extended’frequency range of operation)
Maximum Gain, Amplifier Third Order Intercept Point (3OIP), and LNA Noise Figure for this model.
The nominal DC voltage of this model.
The Serial Number.
Figure 4 –Serial Number Label
RECEIVER MULTICOUPLER
Model No: RX3852-3408-31/12N
Frequency Band: 380 - 520 MHz
Gain: 15 dB Amplifier IP3: 44 dBm
NF: 2 dB Power: +12 V
Serial No. xxxxxxxx

Receiver Multicoupler User’s Manual
Asia Pacific | EMEA | Americas 10
3. Electrical and Mechanical Specifications
Receiver Multicoupler
Receiver Multicoupler
Frequency range RX1317-3408-31
RX3852-3408-31
RX6996-3408-31
132-174MHz (Extended Range* = 80-220MHz)
380-520MHz (Extended Range* = 220-550MHz)
698-960MHz
Number of RF Output Ports
8(expandable to 128)
Expansion Port
Yes
Maximum Gain RF Outputs 1 –8
Expansion Port
15dB
25dB
Gain Setting Range
0 –15dB
Gain Setting Accuracy / Flatness / Temp. Variation
+/- 1dB
Gain Step Size
1dB
Gain Step Error
+/- 0.5dB
Amplifier Type
Quadrature Coupled
Auto-Gain on Amplifier Fail
Yes (Selectable)
Amplifier Noise Figure
2dB max. (<1.5dB typ.)
Amplifier Output 3rd Order Intercept Point (3OIP)
>44dB (48dB typ.)
RF Port Return Loss (All Ports)
>14dB
Impedance
50 ohm
Rx-Rx Port Isolation
>20dB
Lightning Protection
Internal SMT surge protection
to supplement building entry point protection
Alarm Type
Form-C Dry Relay contacts (n.o./n.c. 1A 60V 30W max.)
Alarm Content
First Amplifier Stage Current High or Low
Second Amplifier Stage Current High or Low
Input Voltage High or Low
Internal DC supplies High or Low
RF Connectors
N female
DC Connector
2-pin Phoenix style female (locking)
Alarm Connector
3pin Phoenix style (locking)
Communications Connector
USB type B
Indicators
Front and Rear panel LED's
Power Requirements
12VDC nom. (10VDC to 18VDC)
24VDC nom. (18VDC to 36VDC floating)
48VDC nom. (36VDC to 60VDC floating)
90-264VAC 50/60Hz (plug pack on 12VDC model)
DC Current Consumption
720mA @ 12VDC
425mA @ 24VDC
210mA @ 48VDC
Reverse Polarity Protection
Yes
Earthing
M6 stud (on RHS of rear panel)
M5 screw (on LHS of rear panel)
Operating Temperature Range
-30°C to +60°C / -22°F to 140°F
Mounting
1RU 19inch Rack mount (8way)
Dimensions (W x H x D)
19 x 1.75 x 5.9” / 483 x 44.75 x 150mm (8way)
Weight
1.8kg / 4lbs
* Extended Range provides reliable operation with a minimal reduction of RF specifications
Table 1