Sonifex RB-SD1IP User manual

Manufacturers of audio & video
products for radio & TV broadcasters
Redbox RB-SD1IP
Silence Detection Unit With
Ethernet & USB
HANDBOOK

RB-SD1IP Handbook
This handbook is for use with the following product:
Redbox RB-SD1IP Silence Detection Unit With Ethernet & USB
Stock Code: 30-279
Revision 1.06, December 2015
©Sonifex Ltd, 2015
All Rights Reserved
Sonifex Ltd, 61, Station Road, Irthlingborough,
Northants, NN9 5QE, England.
Tel: [phone]
Fax: [phone]
Email: [email protected]o.uk
Website: http://www.sonifex.co.uk
Information in this document is subject to change without notice and does not represent a
commitment on the part of the vendor. Sonifex Ltd shall not be liable for any loss or damage
whatsoever arising from the use of information or any error contained in this manual.
No part of this manual may be reproduced or transmitted in any form or by any means, electronic
or mechanical, including photocopying, recording, information storage and retrieval systems, for any
purpose other than the purchaser’s personal use, without the express written permission of Sonifex
Ltd. Unless otherwise noted, all names of companies, products and persons contained herein are
part of a completely fictitious adaptation and are designed solely to document the use of Sonifex
product.
Made in the UK by

Contents & Figures
Contents
Product Warranty - 2 Year i
Sonifex Warranty & Liability Terms & Conditions i
1. Definitions i
2. Warranty i
Unpacking Your Product iii
Repairs & Returns iii
Safety & Installation of Mains Operated Equipment v
Voltage Setting Checks v
Fuse Rating v
Power Cable & Connection v
WEEE Directive vi
RoHS Directive vi
Atmosphere vi
Fitting Redboxes vi
RB-SD1IP Silence Detection Unit 1
Introduction 1
System Block Diagram 3
Rear Panel Connections and Operation 4
A/B Inputs (Left and Right) 4
Outputs 4
Silence Detect Trigger Level 4
Silence Detect Interval Control 4
Mode DIP Switch Settings 4
Remote Alarms Connector 5
GPI/O Connector 6
Ethernet Connector 6
Front Panel Selectors and Indicators 7
Power Indicator 7
Reset Button 7
USB Port 7
Main and Aux Indicators 8
Source Select and Indicator 8
Auto/Manual Mode Selector and Indicator 8
Restore Alarm Indicator 9
Restore Button 9
Reset to Defaults 9
Physical Configuration 9
Boot Mode 9
Additional Modes 9
RB-SD1IP Network Discovery and Webserver 10
DHCP 10
AutoIP 10
Static Network Settings 10
MDNS-SD and Bonjour 10
Sonifex Service Discovery App 11
Home Page 12
Device Information 13
Network Settings 14
Configuration : Level & Time Settings 15
Configuration : Source Settings 16
Configuration : Alarm Settings 17
Configuration : SNMP Settings 18
Configuration : USB Settings 19
Configuration : Remote Settings 20
Configuration : GPIO Settings 21
Configuration : Physical Settings 22
Update 23
Technical Specification RB-SD1IP 24
Figures
Fig 1-1: RB-SD1IP Front Panel 1
Fig 1-2: RB-SD1IP System Block Diagram 3
Fig 2-1: RB-SD1IP Rear Panel 4
Fig 3-1: RB-SD1IP Front Panel 7
Fig 4-1: Sonifex Service Discovery - Bonjour Page 11
Fig 4-2: Sonifex Service Discovery - Legacy Discovery Page 11
Fig 4-3: RB-SD1IP Screenshot of the Webserver Home Page 12
Fig 4-4: RB-SD1IP Screenshot of the Webserver Device Page 13
Fig 4-5: RB-SD1IP Screenshot of the Webserver Network Settings 14
Fig 4-6: RB-SD1IP Screenshot of the Webserver Level
& Time Settings 15
Fig 4-7: RB-SD1IP Screenshot of the Webserver Sources Page 16
Fig 4-8: RB-SD1IP Screenshot of the Webserver Alarms Page 17
Fig 4-9: RB-SD1IP Screenshot of the Webserver SNMP Page 18
Fig 4-10: RB-SD1IP Screenshot of the Webserver USB Page 19
Fig 4-11: RB-SD1IP Screenshot of the Webserver Remotes Page 20
Fig 4-12: RB-SD1IP Screenshot of the Webserver GPIO Page 21
Fig 4-13: RB-SD1IP Screenshot of the Webserver Physical Settings 22
Fig 4-14: RB-SD1IP Screenshot of the Webserver Update Firmware 23

Warranty Registration
Sonifex Limited y61 Station Road yIrthlingborough yNorthamptonshire yNN9 5QE yUnited Kingdom
Tel: [phone] yFax: [phone] yEmail: [email protected] yInternet: www.sonifex.co.uk
As standard, Sonifex products are supplied with a 1 year back to base
warranty.
If you register the product online, you can increase your product warranty to
2 years and we can also keep you informed of any product design
improvements or modifications.
To register your product, please go online to www.sonifex.co.uk/register
Register Online for an
Extended 2 Year Warranty

i
Warranty
Product Warranty - 2 Year
As standard, Sonifex products are supplied with a 1 year back to base
warranty. In order to register the date of purchase and so that we can keep
you informed of any product design improvements or modifications, it is
important to complete the warranty registration online. Additionally, if you
register the product on the Sonifex website within 30 days of purchase, you
can increase your product warranty to 2 years. Go to the Sonifex website at:
http://www.sonifex.co.uk/technical/register/index.asp to apply for your 2
year warranty.
Note: For your own records the product serial number is recorded on the
CE certification page of this handbook.
Sonifex Warranty & Liability Terms & Conditions
1. Definitions
‘the Company’ means Sonifex Ltd and where relevant includes companies
within the same group of companies as Sonifex Limited.
‘the Goods’ means the goods or any part thereof supplied by the Company
and where relevant includes: work carried out by the Company on items
supplied by the Purchaser; services supplied by the Company; and software
supplied by the Company.
‘the Purchaser’ means the person or organisation who buys or has agreed
to buy the Goods.
‘the Price’ means the Price of the Goods and any other charges incurred by
the Company in the supply of the Goods.
‘the Warranty Term’ is the length of the product warranty which is usually
12 months from the date of despatch; except when the product has been
registered at the Sonifex website when the Warranty Term is 24 months
from the date of despatch.
‘the Contract’ means the quotation, these Conditions of Sale and any
other document incorporated in a contract between the Company and the
Purchaser.
This is the entire Contract between the parties relating to the subject
matter hereof and may not be changed or terminated except in writing in
accordance with the provisions of this Contract. A reference to the consent,
acknowledgement, authority or agreement of the Company means in
writing and only by a director of the Company.
2. Warranty
(a) The Company agrees to repair or (at its discretion) replace Goods
which are found to be defective (fair wear and tear excepted) and
which are returned to the Company within the Warranty Term
provided that each of the following are satisfied:
(i) notification of any defect is given to the Company immediately
upon its becoming apparent to the Purchaser;
(ii) the Goods have only been operated under normal operating
conditions and have only been subject to normal use (and
in particular the Goods must have been correctly connected
and must not have been subject to high voltage or to ionising
radiation and must not have been used contrary to the
Company’s technical recommendations);
(iii) the Goods are returned to the Company’s premises at the
Purchaser’s expense;
(iv) any Goods or parts of Goods replaced shall become the
property of the Company;
(v) no work whatsoever (other than normal and proper
maintenance) has been carried out to the Goods or any part of
the Goods without the Company’s prior written consent;

ii
Warranty
(vi) the defect has not arisen from a design made, furnished or
specified by the Purchaser;
(vii) the Goods have been assembled or incorporated into other
goods only in accordance with any instructions issued by the
Company;
(viii) the defect has not arisen from a design modified by the
Purchaser;
(ix) the defect has not arisen from an item manufactured by
a person other than the Company. In respect of any item
manufactured by a person other than the Company, the
Purchaser shall only be entitled to the benefit of any warranty or
guarantee provided by such manufacturer to the Company.
(b) In respect of computer software supplied by the Company the
Company does not warrant that the use of the software will be
uninterrupted or error free.
(c) The Company accepts liability:
(i) for death or personal injury to the extent that it results from the
negligence of the Company, its employees (whilst in the course
of their employment) or its agents (in the course of the agency);
(ii) for any breach by the Company of any statutory undertaking as
to title, quiet possession and freedom from encumbrance.
(d) Subject to conditions (a) and (c) from the time of despatch of
the Goods from the Company’s premises the Purchaser shall be
responsible for any defect in the Goods or loss, damage, nuisance
or interference whatsoever consequential economic or otherwise or
wastage of material resulting from or caused by or to the Goods. In
particular the Company shall not be liable for any loss of profits or
other economic losses. The Company accordingly excludes all liability
for the same.
(e) At the request and expense of the Purchaser the Company will test
the Goods to ascertain performance levels and provide a report of
the results of that test. The report will be accurate at the time of the
test, to the best of the belief and knowledge of the Company, and the
Company accepts no liability in respect of its accuracy beyond that
set out in Condition (a).
(f) Subject to Condition (e) no representation, condition, warranty or
other term, express or implied (by statute or otherwise) is given by
the Company that the Goods are of any particular quality or standard
or will enable the Purchaser to attain any particular performance
or result, or will be suitable for any particular purpose or use
under specific conditions or will provide any particular capacity,
notwithstanding that the requirement for such performance, result or
capacity or that such particular purpose or conditions may have been
known (or ought to have been known) to the Company, its employees
or agents.
(g) (i) To the extent that the Company is held legally liable to the
Purchaser for any
single breach of contract, tort, representation or other act or
default, the Company’s liability for the same shall not exceed
the price of the Goods.
(ii) The restriction of liability in Condition (g)(i) shall not apply to
any liability accepted by the Seller in Condition (c).
(h) Where the Goods are sold under a consumer transaction (as defined
by the Consumer Transactions (Restrictions on Statements) Order
1976) the statutory rights of the Purchaser are not affected by these
Conditions of Sale.

iii
Repairs & Returns
Unpacking Your Product
Each product is shipped in protective packaging and should be inspected
for damage before use. If there is any transit damage take pictures of the
product packaging and notify the carrier immediately with all the relevant
details of the shipment. Packing materials should be kept for inspection and
also for if the product needs to be returned.
The product is shipped with the following equipment so please check to
ensure that you have all of the items below. If anything is missing, please
contact the supplier of your equipment immediately.
Item Quantity
Product Unit 1
IEC Mains lead fitted with moulded mains plug 1
Handbook and warranty card 1
If you require a different power lead, please let us know when ordering the
product.
Repairs & Returns
Please contact Sonifex or your supplier if you have any problems with your
Sonifex product. Email [e-mail] for the repair/
upgrade/returns procedure, or for support & questions regarding the
product operation.
പ

iv
CE Certification
61 Station Road • Irthlingborough • Northants
NN9 5QE • United Kingdom • www.sonifex.co.uk
T: [phone] • F: [phone]
Registered Office • 61 Station Road • Irthlingborough • Registered in England 1717864 • VAT Reg No. GB 119 85 32 52
CE Declaration of Conformity and Approval Information
Product:
Serial No:
This document certifies that the Sonifex product that you have purchased is
compliant with CE specifications. If you would like further information on
compliance of all Sonifex products, please check the website at the address
above where full information is available.
Sonifex Limited hereby certify that the following product with serial
number shown has been designed and manufactured in accordance with
the following specifications :
EMC: EN 55103-1: 1997 Electromagnetic Compatibility.
Limits of disturbance for audio apparatus for professional use
For use in environments 1 to 4.
EN 55103-2: 1997 Electromagnetic Compatibility.
Limits of disturbance for audio apparatus for professional use
For use in environments 1 to 4.
Safety: EN 60950: 1992 Safety of Information Technology Equipment
Including Electrical Business Equipment.
Hybrid BS6301, BS7002, BS415, CTR21,
Approvals: R&TTE directive (1999/5/EC)
The Reference Technical Justification File for this product is available at
Sonifex Ltd.
Authorised By:
Name: Chris Stills
Position: Technical Director
Date of Issue: 01 December 2015
Signature:

v
Safety & Installation
Safety & Installation of Mains
Operated Equipment
There are no user serviceable parts inside the equipment. If you should
ever need to look inside the unit, always disconnect the mains supply
before removing the equipment covers. The cover is connected to earth
by means of the fixing screws. It is essential to maintain this earth/
ground connection to ensure a safe operating environment and provide
electromagnetic shielding.
Voltage Setting Checks
Ensure that the machine operating voltage is correct for your mains power
supply by checking the box in which your product was supplied. The voltage
is shown on the box label. The available voltage settings are 115V, or 230V.
Please note that all products are either switchable between 115V and 230V,
or have a universal power supply.
Fuse Rating
The product is supplied with a single fuse in the live conducting path of the
mains power input. For reasons of safety it is important that the correct
rating and type of fuse is used. Incorrectly rated fuses could present a
possible fire hazard, under equipment fault conditions. The active fuse is
fitted on the outside rear panel of the unit.
Power Cable & Connection
An IEC power connector is supplied with the product which has a moulded
plug attached – this is a legal requirement The mains lead is automatically
configured for the country that the product is being sent to, from one of :
Territory Voltage IEC Lead Type Image
UK & Middle East 230V UK 3 pin to IEC lead
Europe 230V European Schuko round 2 pin to
IEC lead
USA, Canada and
South America 115V 3 flat pin to IEC lead
Australia & New
Zealand 230V Australasian 3 flat pin to IEC lead
Connect the equipment in accordance with the connection details and
before applying power to the unit, check that the machine has the correct
operating voltage for your mains power supply.
Important Note: If there is an earth/ground terminal on the rear panel of
the product then it must be earthed/grounded.

vi
Safety & Installation
WEEE Directive
The Waste Electrical and Electronic Equipment (WEEE)
Directive was agreed on 13 February 2003, along with the
related Directive 2002/95/EC on Restrictions of the use of
certain Hazardous Substances in electrical and electronic
equipment (RoHS). The Waste Electrical and Electronic Equipment Directive
(WEEE) aims to minimise the impacts of electrical and electronic equipment
on the environment during their life times and when they become waste.
All products manufactured by Sonifex Ltd have the WEEE directive label
placed on the case. Sonifex Ltd will be happy to give you information about
local organisations that can reprocess the product when it reaches its “end
of use”, or alternatively all products that have reached “end of use” can be
returned to Sonifex and will be reprocessed correctly free of charge.
RoHS Directive
The RoHS directive limits the use of certain hazardous
substances currently used in EEE manufacture, including
lead, mercury, cadmium, hexavalent chromium, and
halide-containing compounds PBB (polybrominated biphenyl) and PBDE
(polybrominated diphenyl ether). Elimination of these substances will result
in more environmentally friendly recycling of electronic equipment.
Sonifex Ltd practices lead-free (LF) manufacturing processes and does not
use any of the hazardous substances identified in the European Union’s
Restriction of Hazardous Substances (RoHS) directive. The manufacturing
processes include the assembly of purchased components from various
sources. Product is offered as RoHS compliant, or LF, only after sufficient
evidence is received from the component manufacturers that their
components are RoHS compliant. Sonifex Ltd relies solely on the distributor,
or manufacturer, of the components for identification of RoHS compliance.
Thus whilst every effort is made to ensure compliance, Sonifex Ltd makes
no warranty, or certification, or declaration of compliance concerning said
components.
Atmosphere
The units should be installed in an area that is not subject to excessive
temperature variation (<0°C, >50°C), moisture, dust or vibration.
Fitting Redboxes
Redboxes can be fixed to the underside of a mixing desk, or other surfaces
using 4.2mm holes in the sides and fixed with 2 x M4 screws or 2 x No. 6
countersink wood screws.
They can also be rack-mounted, with either the front, or rear of the Redbox
positioned at the front of the rack:
Rear Mounting a 1U Rackmount Redbox:
The RB-RK3 1U rear panel rack kit can be used for large 1U rackmount
Redboxes.
Note: When fitting the RB-RK3 rear-mounting rack-kits, a notch has been left on the inside of the right-hand rack-piece for the mains cable to pass through.
Make sure that the mains cable has been put through the notch before attaching the right hand rack-piece.

1
Introduction 1
RB-SD1IP Silence Detection Unit
Introduction
Fig 1-1: RB-SD1IP Front Panel
The RB-SD1IP Silence detection unit is an upgraded version of the existing
Sonifex RB-SD1. The unit is a 1U rack mount device used to monitor an
unattended stereo studio feed and in the event of the signal going “quiet”
after a given period the unit will switch through an alternative stereo audio
signal. This signal could be a recorded message (e.g. “Normal service will
be resumed”, etc), a feed from a CD or minidisc player, or an alternative
recorded program. Controls are provided to start external equipment and to
provide remote status indication.
The RB-SD1IP has several new features in addition to the functionality of
the standard RB-SD1.
Ethernet connectivity provides the ability to set up and control the unit via
a browser based Graphical User Interface (GUI). The network capabilities
allow the user to more finely control silence Levels (-60dBu to 0dBu in 3dBu
steps) and Time delays (1 second to 24 hours), you can also remotely lock/
unlock the front panel controls on the unit and choose to use either the
hardware configured settings or web based settings. In addition to the front
panel LEDs the GUI home page also offers a real time view of signal levels
and alarm statuses.
Also using the GUI, left and right channels can be treated independently,
remote relay triggers can be configured as one of many events including
the new GPI pins. You can also choose to lock/unlock the use of the remote
pins to control the unit. Firmware updates can also be performed using the
web GUI.
SNMP V1 is implemented so that the unit can be monitored by existing
Network Management Systems (NMS). The addition of 6 extra GPI pins to
the rear panel, allows customisable functionality, including the use of the
RB-SD1IP network interface to generate SNMP Traps on behalf of other,
non-networked, hardware.
The RB-SD1IP has been fitted with a USB interface on the front panel and
can act as a host in two ways. Firstly the USB port can be used to upgrade
the firmware on the unit from a USB flash drive. Such a drive can also hold
a pre-recorded message which the unit can play out in the event that both
main and auxiliary signals both fall silent.
As on the standard RB-SD1, the RB-SD1IP has 2 balanced stereo audio
inputs with a maximum input level of +28dBu. Each input is user-defined as
either the main source or auxiliary source and all channels are monitored
for failure. In the event of the main source dropping below a pre-set level
for a pre-determined amount of time, the unit will automatically attempt
to switch through to a valid auxiliary signal. The silence detect level is
adjustable between -60dBu and -15dBu in 3dB steps via a 16 position rotary
switch on the rear panel. The silence interval can be adjusted between 2
seconds to 30 seconds in 2 second steps, or, alternatively, set to 2 minutes
5 seconds also via a 16 position rotary switch on the rear panel. More fine
control of the detection levels and times can be set using the web browser
based GUI. The audio inputs and outputs use stereo professional balanced
XLR-3 connectors.

2
1 Introduction
The unit has 2 operational modes for restoring a signal - automatic or
manual. In both modes the unit will automatically switch over to a valid
auxiliary source upon detecting silence. When a valid main signal returns
it will either restore to the main channel automatically or manually
depending on the mode selected.
The RB-SD1IP has a number of remote operational features. Rear panel
remote outputs provide separate relay contact closures for failure of the
main and auxiliary inputs. You can also remotely control all of the front
panel switches for source selection, mode selection and signal Restore.
You can remotely start and stop another piece of equipment on alarm
failure and main signal return respectively. A silence time of 2 minutes
and 5 seconds can be set remotely, which is useful if you are expecting to
broadcast a long silence.
The unit has three signal type operational modes – Stereo, Mono and
Independent. In stereo mode, the unit will alarm if either the left or right
channel falls silent. In mono mode the unit will only alarm if both left and
right channels fall silent. In independent mode the unit can be configured
to operate as a 2 channel mono silence detector, alarming and switching
the two input channels independently. There are also options to set the
remote start output as momentary or latched, to disable switching to the
auxiliary input on alarming and to increase the gain on the auxiliary inputs
so that unbalanced sources can be used, for example, from a domestic flash
memory/USB player.
Front panel LED indicators show individually left and right programme
status and alarm conditions for both the main and auxiliary inputs. The
status of the source, mode and alarm state are also shown on the front
panel with LED indicators.
The RB-SD1IP has been designed to have a passive signal path through the
main input, so if power to the unit fails, the signal input will still be routed
through to the output. This is essential for applications such as installation
at transmitter sites, where a power failure to the unit should not prevent
the audio input signal from being output to the transmitter.

3
System Diagram 1
Fig 1-2: RB-SD1IP System Block Diagram
Right
Left
Right
Left
Mode
Button Restore Button Source Select
Button
Ethernet
Reset
USB
ADC
Microprocessor
USB Audio
Output Select
Remote Relay Control
Consumer Gain Select
Summing
Amplifiers
Output Select
9 Way
GPI Socket
15 Way
Remotes Plug
Right
Left
Balanced
Stereo
Outputs
Stereo
Input B
Stereo
Input A
Mode
Select
Time
Select
Level
Select 0-9D-F
0-9D-F
System Block Diagram

4
2 Rear Panel Connections and Operation
Rear Panel Connections and Operation
Fig 2-1: RB-SD1IP Rear Panel
A/B Inputs (Left and Right)
There are four XLR-3 inputs, two for channel A (Left & Right) and another
two for channel B (Left & Right). The XLR 3 pin sockets are used for the
input channels and are electronically balanced. They have the following
connections: -
Pin 1: Screen.
Pin 2: Phase.
Pin 3: Non-phase.
Outputs
The stereo output consists of two XLR male connectors professionally
balanced with following connections: -
Pin 1: Screen.
Pin 2: Phase.
Pin 3: Non-phase.
Silence Detect Trigger Level
The Level rotary switch adjusts the level below which silence detection
occurs. This level may be varied from –15dB to -60db in 3db steps by
adjusting the switch according to the following table:
A Inputs
GPI/O
Socket
B Inputs
Stereo
Outputs
Ethernet Fuse
Mode
Remote
Plug
Time
Control
Level
Control
Switch 0123456789ABCDEF
Level dBu -60-57-54-51-48-45-42-39-36-33-30-27-24-21-18-15
Silence Detect Interval Control
The silence detect interval rotary switch (Time) adjusts the duration over
which a silence must persist before alarming the unit. The time ranges from
2 to 30 seconds (0 – E in 2 second intervals) with F on the switch being a
2 min 5 second silence. This maximum time can also be activated or de-
activated remotely using the remote connector.
Switch 0123456789ABCDEF
Seconds 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 125
Note: Better control of the Silence Detect Level and Interval are available
by using the Webserver built into the RB-SD1IP. See section 4 for more
information.
Mode DIP Switch Settings
1. Stereo/Mono.
2. Remote Start Mode Switch.
3. Professional levels/Consumer levels (Input B).
4. Switch/No switching when alarmed.
1234
ON
OFF
IFC
Power
Inlet

5
Rear Panel Connections and Operation 2
1. Stereo/Mono Switch – The configuration of this defines whether you
want to switch sources when left and/or right channel of the incoming
source go silent.
Switch Description
On When on, the unit operates in stereo mode, whereby if one
channel falls silent the unit will switch, and requires both channels
to be present before it switches back.
Off When off, the unit operates in mono mode. In this mode the unit
will only switch when both channels go quiet, and requires only
one channel to be present before the unit switches back.
Note: the Independent channel option can only be configured using the
web based GUI not by using physical rear panel controls.
2. Remote Start Mode Switch – This defines whether the remote start
switch is momentary or latched. Used for starting external equipment when
silence is detected.
Switch Description
On When on, the remote start pin (pin 15) on the remote connector is
pulled low for half a second when the unit switches to the auxiliary
input. (Momentary contact).
Off When off, the remote start pin on the remote connector is pulled
low when the unit switches over to the auxiliary input and remains
low until the unit switches back to the main source or, if in
manual mode, is restored by the user locally or remotely. (Latched
contact).
3. Professional/Consumer Switch – This allows you to use an unbalanced
piece of equipment as the auxiliary input, by raising the input gain.
Switch Description
On When on, Input B accepts professional balanced signal level.
Off When off, Input B accepts consumer unbalanced signal level and
raises the input gain received by 8dB.
4. Switch/No Switching in Alarm State – This defines whether the unit
switches to the auxiliary input upon silence detection.
Switch Description
On When on, if the unit goes into the alarm state the unit switches to
the auxiliary input.
Off When off, if the unit goes into the alarm state the unit does not
switch to the auxiliary input.
Remote Alarms Connector
Displayed below are the pin connections and descriptions for the remote
plug connector:
Pin No. Signal I/O Description
Pin 1 Digital Ground - -
Pin 2 Restore Switch I Momentary make to Pin 1
Pin 3 Mode Indicator O Internal Open Collector to Digtal
Ground
Pin 4 Mode Switch I Momentary make to Pin 1
Pin 5 Relay 2 Normally Closed I/O Relay 2 N/C to Pin 14
Pin 6 Relay 2 Normally Open I/O Relay 2 N/O to Pin 14 Ground
Pin 7 Relay 1 Normally Closed I/O Relay 1 N/C to Pin 15
Pin 8 Relay 1 Normally Open I/O Relay 1 N/O to Pin 15
Pin 9 Remote Start O Internal Open Collector to Digital
Ground
Pin 10 Source Select Switch I Momentary make to Pin 1
Pin 11 Source Select Indicator O Internal Open Collector to Digital
Ground
Pin 12 +5V O To power up to a maximum
200mA

6
2 Rear Panel Connections and Operation
Pin 13 Relay 2 Common I/O N/O to Pin 6, N/C to Pin 5
Pin 14 Max Time Whilst Latched I Active Low make to Pin 1
Pin 15 Relay 1 Common I/O N/O to Pin 8, N/C to Pin 7
Please note: Pins 5, 6, 7, 8, 13 and 15 are for external use to break/make
contacts in response to a configurable event in the unit. For example
these relays can be used to replicate the alarm conditions for the Main
and Auxiliary inputs. Options for these relays may be configured using the
web based GUI. The operation of Relay 1 and Relay 2 can be re-configured
through the Configuration>Remotes web page.
By default Relay 1 is set as the Main alarm and will alarm on either Main
left or Main right - in the alarm state pin 8 closes to pin 15 and pin 7 is
open. Relay 2 is set as the Aux alarm and alarms on Aux left or Aux right -
under the alarm condition pin 6 closes to pin 14 and pin 5 is open.
Pins 2, 3, 4, 10 and 11 are to replicate the switches and indicators for the
Source Select, Mode and Restore functions.
Note: The remote source select, pin 10, may be held low in order to force
the unit to route stereo input source B to the outputs.
Pins 1 & 12 are Ground and +5V respectively and can be used to source up
to 200mA of current to power external circuitry such as LED indicators or
relays.
Pin 14 is to select remotely a silence time of 2 minutes and 5 seconds. This
may be useful for the broadcast of Remembrance Day services, or where
you expect a silence of up to 2 minutes to be broadcast. The maximum
silence time is set whilst the contact is latched.
Pin 9 is used to remotely start an external piece of equipment and operates
on audio fail.
GPI/O Connector
There are 6 GPI pins available on a 9 way female D-type connector located
above the Remote Alarms Connector. These pins have been included to
provide more customised behaviour of the RB-SD1IP which could enable
non-networked hardware to generate alarms for an existing Network
Management System by using the network interface of the RB-SD1IP.
Currently each of the GPI pins can be used to trigger one or both of
the relays available to the Remote Alarms Connector. Each GPI can also
generate SNMP traps to follow pin activity.
Power and ground connections are available on this connector from the
same source as the 200mA +5V fused supply on the Remotes connector.
Pin No. Signal I/O Description
Pin 1 GPI 1 I General Purpose Input 1
Pin 2 GPI 3 I General Purpose Input 3
Pin 3 GPI 5 I General Purpose Input 5
Pin 4 Digital Ground - Ground Return For External Circuits
Pin 5 +5VD Fused - 5V Supply Pin to Power External Circuits
Pin 6 GPI 2 I General Purpose Input 2
Pin 7 GPI 4 I General Purpose Input 4
Pin 8 GPI 6 I General Purpose Input 6
Pin 9 Digital Ground 7 Ground Return for External Circuits
Ethernet Connector
The unit supports 10/100 Mbps Ethernet via a standard RJ45 connector.
The Green LED shows link status/activity and the Amber LED indicates
connection speed (On = 100 Mbps, Off = 10 Mbps).
A Webserver is built into the RB-SD1IP to allow easier configuration and
remote operation.

7
Front Panel Selectors and Indicators 3
Front Panel Selectors and Indicators
Fig 3-1: RB-SD1IP Front Panel
Power Indicator
A single red LED confirms the presence of an active power supply to the
unit.
Reset Button
The recessed reset button allows you to perform a hardware reset on the
unit without powering down.
USB Port
The USB port enables the unit to act as a host for low power mass storage
devices (such as flash drives) which are formatted to either FAT or FAT32.
Such devices may be used for the playback of audio files.
The USB functionality is configured using the browser based GUI and allows
you to play out wave (.wav) files in the event of both the Main and Auxiliary
sources falling silent. The currently supported file format is .wav extensions
in PCM 16 bit Stereo encoding.
The unit supports the following sample rates: 8 kHz, 11.025 kHz, 12 kHz, 16
kHz, 22.050 kHz, 24 kHz, 32 kHz, 44.1 kHz, 48 kHz
Only files located in the root directory of the USB device will be available
for playback. The unit supports a playlist in the form of an ordered list of
filenames delineated by a new line.
For example:
Track_05.wav
Track_01.wav
03_Song.wav
Melody.mp3
customer_message.wav
The playlist file should be designated “playlist.txt” or “playlist.m3u” and
placed in the root directory with the audio files. Any files in the list which
are invalid (such as the .mp3 in the above example) or not present will be
ignored. If a playlist is not present then the audio files will be played out in
the order of their creation on the USB device.
Note: It is recommended that files of a single sample rate range are used
in order to avoid a small delay (up to 3 seconds) between the playback of
tracks with sample rates in different frequency ranges.
The USB audio playback feature can be remotely enabled or disabled using
the GUI. Other USB audio options include: Default Sample Rate Selection,
Track Recall, Looped Playback and SNMP Trap Generation.
Default Sample Rate:
This option sets up the system clock to be ready to play out files with a
sample rate from a specific frequency range. For example; if your USB
USB
Socket
Reset
Button
Power
LED
Source Select
Switch and
Indicator
Restore Button
and Alarm
Indicator
Auto/Manual Mode
Switch and Indicator
Main
Indicators
Aux
Indicators

3 Front Panel Selectors and Indicators
8
device contains files at a sample rate of 24 kHz, set the default sample rate
to 48 kHz range, which also supports the subfrequencies 12kHz & 24kHz, to
ensure the unit always boots up ready to play at the correct clock frequency.
Track Recall:
When this option is disabled, every time USB audio is routed to the output,
the playback will begin from the first available file. When this option is
enabled the unit will remember the previous track it was playing out from
USB and upon USB audio being routed to the output, playback will begin
from the start of the next available file. Note that Track Recall will be lost
when the unit is powered down, or when the USB device is removed.
Looped Playback:
When enabled, this option will play all valid audio files on the USB device
in a loop whenever USB audio is route to the output. When this option is
disabled the audio files on the USB device will only be played through once,
per instance, of the USB audio being routed to the output.
SNMP Trap Generation:
The unit can generate SNMP Traps to inform a Network Management System
(NMS) that a USB device has been plugged into, or unplugged from the front
of the unit.
Main and Aux Indicators
On the front panel there are four Main indicators and four Aux indicators.
Each left/right channel has a Program Content and Alarm Status indicator.
The Program Content Indicator represents the input signal level for that
channel and the Alarm Status LED indicates whether the channel has
dropped below the threshold for longer than the time selected.
Both the Main and Aux inputs are continuously monitored so that you can
check that your backup signal is operating correctly, as well as your main
input source.
Note: Although one channel of the stereo input may have alarmed, the main
alarm may not be set, due to the setting of the Stereo/Mono Dipswitch.
Source Select and Indicator
The preferred Main input source is selectable via a recessed push button
switch on the front panel, or it can be controlled remotely (pin 10) and from
the GUI. This allows you to define whether input A, or input B is going to
be the Main audio input. There is an LED to indicate which state the source
select is in:
LED Description
LED On Main source is input A, Aux source is input B
LED Off Main source is input B, Aux source is input A
The GUI can be used to configure the source select LED to indicate the
current input which is being routed to the output. In this case:
LED Description
LED On Input A is being routed to the output
LED Off Input B is being routed to the output
LED Flashing USB Audio is being routed to the output
Note: If the unit is powered off, for example during a black-out, input A
routes through to the output. Therefore if the unit is subject to a power fail
while the main source is set to input B, the unit will output source A.
Auto/Manual Mode Selector and Indicator
The Auto/Manual Mode Switch defines how the unit should operate during
an alarm condition, when the main audio source returns. There is an option
to allow the device to switch back Automatically or Manually. The mode is
selected by a push switch accessed through a hole on the front panel with a
corresponding LED to represent its state, it can be controlled remotely (pins
3 and 4) or by using the GUI.

9
Front Panel Selectors and Indicators 3
LED Description
LED On Automatic Mode – During an alarm condition when the
main source returns, it is switched back automatically,
although a valid signal must persist for at least the
configured Restore Time period.
LED Off Manual Mode – the LED will begin to flash once a valid
main signal is detected, indicating that manual restore can
now be performed.
LED Flashing Manual Mode – The main audio has returned after an
alarm condition. To switch to the main source, push the
Restore button (or control it remotely).
Note: When using Independent Channels in Manual Mode you will need to
press restore once for each channel.
Restore Alarm Indicator
The Restore Alarm Indicator situated on the front panel is used to display
the alarm status of the Main input. Its operation is dependent on the
selected mode (See Mode DIP Switch Settings):
• Stereo mode - the unit alarms on a single main channel timeout.
• Mono mode - alarms on both main channels timing out.
The unit exits the alarm state on the return of the main source signal,
depending on the setting of the Stereo/Mono Dipswitch.
Restore Button
The Restore button is used for restoring the main source signal when the
unit is operating in Manual Mode. When the main source signal returns
after it has timed out, the Mode LED flashes, indicating that the source
signal can be restored. When the Restore button is pressed the main
source returns. This can be remotely controlled using pin 2 of the remotes
connector. There is also a restore button present on the web based GUI.
Reset to Defaults
It is possible to reset the unit to default configuration settings, including
network settings, from the front panel. To perform a full reset you must
press and hold the Restore button whilst resetting or power cycling the
unit.
Physical Configuration
It is possible to force the unit to use physical configurations (rear panel dip
& hex switches) rather than the browser based GUI settings. To do this you
must press and hold the Source Select button whilst resetting or power
cycling the unit.
Note: When switching to physical configuration from webpage
configuration, the operation of the unit could change significantly.
Boot Mode
In the unlikely event that the RB-SD1IP becomes inoperable due to
corruption of the main firmware, you can force the unit into Boot Mode.
To do this you must hold down both the Source Select and Mode buttons
whilst resetting or power cycling the unit. To indicate that Boot Mode is
active the Source, Mode and Restore LEDs will flash. A unit in “Boot Mode”
can be discovered and updated through the webpage in the same way as
for main firmware.
Additional Modes
The original RB-SD1 offered the option to configure the unit into various
additional modes of operation. The RB-SD1IP offers these options through a
webserver based GUI.

10
4 Network Discovery and Webserver
RB-SD1IP Network Discovery and Webserver
In addition to any physical controls the RB-SD1IP has a built in webserver
which can allow you to control and configure the unit remotely through
a web browser. The webpage interface also enables you to view status
information, alter network settings, and update product firmware.
The RB-SD1IP network interface employs Zeroconf networking, meaning
that it supports DHCP, AutoIP and MDNS-SD using Bonjour. We provide a
free application available for download from our website (www.sonifex.
co.uk/technical/software) to facilitate the discovery and use of Sonifex
network enabled hardware, see below for more information.
Connecting to the unit: Connecting to the webpage interface is as simple as
typing the IP address of the unit into the address bar of a web browser on a
PC connected to the same network.
DHCP
The RB-SD1IP will have DHCP and AutoIP enabled by default, if your
network has a DHCP server then the unit will be assigned an IP address
which can be found easily by using the Sonifex service discovery application,
or by contacting your network administrator. The nature of DHCP means
that the unit is not guaranteed to maintain a fixed IP address each time it
is reconnected to the network. See the section on static network settings
below for information on how to fix the IP address of the unit.
AutoIP
If your network does not support DHCP or it is disabled, then with AutoIP
enabled the unit will assign itself an IP address from the AutoIP range
(169.254.1.0 to 169.254.254.255). Once an AutoIP address has been
assigned you will need to connect the unit directly to a PC using an Ethernet
cable. Ensure that the PC has dynamic addressing enabled and you will be
able to use the Sonifex discovery application on this mini network to access
the webpage interface.
Static Network Settings
Accessing the webpage interface allows you to configure the network
settings as you like. To give the unit a fixed network address, enter
appropriate static details and disable both DHCP and AutoIP. The unit
will now apply the static network settings whenever it is connected to a
network.
MDNS-SD and Bonjour
Bonjour is a hardware discovery service developed by Apple and as such
it is natively supported by Apple devices and operating systems. Bonjour
for Windows is available, go to our website (www.sonifex.co.uk/technical/
software) or other download stores and download the appropriate version
for your operating system.
On a Bonjour enabled device or system, you can connect to a unit using
only its hostname. By default the hostname for the RB-SD1IP will be the
hardware ID appended by the unique serial number of the unit:
[Hardware ID] – [Serial No.]
RB-SD1IP-654321
To connect to a unit using Bonjour you can simply discover and launch
the webpage interface from the Sonifex service discovery application.
Alternatively you can simply type the hostname appended by the local
domain name into the address bar of your web browser, for the example
above you would enter the following:
RB-SD1IP-654321.local.
The hostname is independent of the IP address and this means that the
unit can always be discovered and accessed in this way, regardless of which
IP address it has been assigned by a DHCP server. The hostname can be
changed to make it more memorable or descriptive of an implementation,
however, conflicting names should be avoided.