User manual | Sonifex CM-TB8, 8 Channel Talkback Control Unit V1.05

HANDBOOK
CM-TB8
8 Channel Talkback Control Unit
Manufacturers of audio & video
products for radio & TV broadcasters
CM-TB8 Handbook
This handbook is for use with the following product:
CM-TB8 8 Channel Talkback Control Unit
Stock Code: 30-267
©Sonifex Ltd, 2015
All Rights Reserved
Revision 1.05, August 2015
Sonifex Ltd, 61, Station Road, Irthlingborough,
Northants, NN9 5QE, England.
Tel: +44 (0)1933 650 700
Fax: +44 (0)1933 650 726
Email: [email protected]
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
Contents
Product Warranty - 2 Year Extended
Sonifex Warranty & Liability Terms & Conditions
1. Definitions
2. Warranty
i
i
i
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
Atmospherevi
Introduction1
Front Panel Controls, Connections & Indicators
2
Headphone Output Connection
Microphone Input Connection
Headset Connection
Talk Level Indicators
Input Select Indicators
Multi-Function Rotary Control
Group Talk Button
Channel 1 to 8 Talk Buttons
Channel 1 to 8 IFB/4W Select Switches
Channel 1 to 8 Monitor Level Potentiometers
Loudspeaker Mute Button
Loudspeaker Dim Potentiometer
Monitor Level Potentiometer
4W IN Input Connections
TB OUT Output Connections
IFB A & B Programme Input Connections
MIC Output Connection
Remote Connections
Ethernet Connection
LS Output Connection
2
2
2
2
2
3
3
3
4
4
4
4
4
5
5
5
5
5
5
5
Remotes 1 – Outputs
Remotes 2 – Inputs
7
7
Line-Up Tone Mode
6
Remotes7
Configuration Options
On-Board Configuration Mode
Embedded Web Server
Home Page
Network Settings Page
Display Settings Page
Microphone Settings Page
Talk Level Settings Page
Group Talk Settings Page
Channel Settings Page
Load Settings Page
Save Settings Page
Update Page
7
8
9
10
11
11
12
12
13
13
14
14
15
Configuration Option Defaults
16
Connection Example
Button Operation Reference
Connection Details
18
19
20
Configuration Template Set 1 (read only)
Configuration Template Set 2 (read only)
Configuration Template Sets 3 to 6
Headphone Output – ¼ inch (6.35mm) stereo jack socket
Microphone Input – Electronically balanced 3 pin female XLR-3
Headset – 5 pin female XLR-5 (microphone input is
electronically balanced)
4-Wire Inputs – Transformer balanced 3 pin female XLR-3
Talkback Outputs – Transformer balanced 3 pin male XLR-3
IFB Inputs – Transformer balanced 3 pin female XLR-3
Microphone Output – Electronically balanced 3 pin male XLR-3
Remotes 1 – 15-way ‘D’-type socket
Remotes 2 – 15-way ‘D’-type socket
Loudspeaker Output – ¼ inch (6.35mm) jack socket
Technical Specification
CM-TB8T Introduction
Enabling the Telephone Interface
Making a Telephone Call
Direct Dialling
Dialling Using an External Telephone Handset
Receiving a Telephone Call
Handling a Connected Telephone Call
Ending a Telephone Call
16
16
17
20
20
20
20
20
20
20
20
20
21
22
23
23
24
24
24
24
24
25
Contents
Contents continued...
Embedded Web Server
25
PSTN Telephone Interface Connection Details
26
PSTN Settings Page
Telephone Line – RJ11 Socket
Telephone Handset – RJ11 Socket
CM-TB8G Introduction
SIM Card Requirements
Installing a SIM Card
Enabling the Telephone Interface
Making a Telephone Call
Direct Dialling
Dialling Using The Web Server
Receiving a Telephone Call
Handling a Connected Telephone Call
Ending a Telephone Call
Embedded Web Server
GSM Settings Page
GSM Specifications
25
26
26
27
27
27
27
28
28
28
28
29
29
29
30
31
Figures
Figures
Fig 1-1: System Block Diagram
Fig 2-1: CM-TB8 Front Panel
Fig 3-1: CM-TB8 Rear Panel
Fig 6-1: Home Page
Fig 6-2: Network Settings Page
Fig 6-3: Display Settings Page
Fig 6-4: Microphone Settings Page
Fig 6-5: Talk Level Settings Page
Fig 6-6: Group Talk Settings Page
Fig 6-7: Channel Settings Page
Fig 6-8: Load Settings Page
Fig 6-9: Save Settings Page
Fig 6-10: Update Page
Fig 8-1: Connection Example
Fig 12-1: Channel Settings Page
Fig 12-2: PSTN Settings Page
Fig 13-1: Channel Settings Page
Fig 13-2: GSM Settings Page
1
2
5
10
11
11
12
12
13
13
14
14
15
18
23
25
28
30
Warranty Registration
Register Online for an
Extended 2 Year Warranty
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
Sonifex Limited — 61 Station Road — Irthlingborough — Northamptonshire — NN9 5QE — United Kingdom
Tel: +44 (0)1933 650 700 — Fax: +44 (0)1933 650 726 — Email: [email protected] — Internet: www.sonifex.co.uk
Warranty
Product Warranty - 2 Year Extended
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;
i
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.
ii
(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.
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 [email protected]k for the repair/
upgrade/returns procedure, or for support & questions regarding the
product operation.
iii
CE Certification
61 Station Road • Irthlingborough • Northants
NN9 5QE • United Kingdom • www.sonifex.co.uk
T: +44 (0)1933 650 700 • F: +44 (0)1933 650 726
CE Declaration of Conformity and Approval Information
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 :
Product:
Serial No:
EMC:
EN 55103-1: 1997 Electromagnetic Compatibility.
Limits of disturbance for audio apparatus for professional use
For use in environments 1 to 4.
The Reference Technical Justification File for this product is available at
Sonifex Ltd.
EN 55103-2: 1997 Electromagnetic Compatibility.
Limits of disturbance for audio apparatus for professional use
For use in environments 1 to 4.
Authorised By:
Safety:
Position: Technical Director
EN 60950: 1992 Safety of Information Technology Equipment
Including Electrical Business Equipment.
Date of Issue: 01 August 2015
Hybrid Approvals:
BS6301, BS7002, BS415, CTR21,
R&TTE directive (1999/5/EC)
Name:
Chris Stills
Signature:
R e g i s t e r e d O f f i c e • 6 1 S t a t i o n R o a d • I r t h l i n g b o r o u g h • R e g i s t e r e d i n E n g l a n d 1 7 1 7 8 6 4 • VAT R e g N o . G B 1 1 9 8 5 3 2 5 2
iv
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
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
Image
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.
v
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
vi
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.
Introduction
1
Introduction
The CM-TB8 Talkback Control Unit is a powerful and highly
flexible self contained communications unit allowing multiple
4-wire and IFB connections within a single 1U rack space.
Using the latest DSP technology, the CM-TB8 integrates a high
quality, digitally controlled audio system with an intuitive
and configurable user interface. It offers easy connection to
any industry standard talkback system including the Sonifex
CM-TBU line listen unit plus the CM-CU1 and CM-CU21
commentator units.
The CM-TB8 provides 8 channels of 4-wire communication,
with 2 additional IFB inputs that can be routed to each
channel. The unit has individual connections for a microphone
and headset, and the gain for each input can be independently
set. Phantom power and a wide gain range ensure support for
most microphone types. All of the audio processing is done
in the digital domain. This gives greater control of the audio
mixing and routing functions and allows smoother changes in
signal level. Likewise, the volume potentiometers on the front
panel control gain digitally, ensuring noise free operation.
Fig 1-1: System Block Diagram
1
2
Front Panel Controls, Connections & Indicators
Front Panel Controls, Connections & Indicators
Microphone
Input
Connection
Headphone
Socket
Talk Level
Indicators
Headset
Connection
Channel
IFB/4W
Select Switch
Input Select
Indicators
Multi-Function
Rotary Control
Channel
Monitor Level
Potentiometer
Channel
Talk
Button
Loudspeaker
DIM
Potentiometer
Loudspeaker
Mute Button
Monitor
Level
Potentiometer
Loudspeaker
Fig 2-1: CM-TB8 Front Panel
Headphone Output Connection
The headphone output is via a ¼ inch (6.35mm) stereo jack socket capable
of driving 32Ω - 600Ω professional headphones. Lower impedance
headphones should not be used.
Microphone Input Connection
The electronically balanced microphone input is via a 3 pin female XLR-3
connector. The available gain for this input ranges from +6dB to +69dB.
Phantom powered microphones are supported on this input.
Headset Connection
The headset connection is via a 5 pin female XLR-5 connector. It shares the
same input and output circuits as the separate microphone and headphone,
but the gain settings are independent and the available range is from +6dB
to +69dB. Changing the input type automatically selects the corresponding
gain settings. Phantom power is also available on this input.
2
The microphone and headset inputs are protected by a level limiter. The
limiter will start to function when the input signal exceeds approximately
+8.5dB. When the limiter is active, the input select LED indicators will
illuminate red instead of amber. When the input signal is reduced and the
limiter turns off, the input select indicators return to amber illumination.
Talk Level Indicators
In the normal operating mode, the left indicator illuminates green when
the gain adjusted microphone signal exceeds 0dB, and the right indicator
illuminates red when the signal exceeds +8dB.
Input Select Indicators
In the normal operating mode, these indicators illuminate amber to show
which microphone type is currently selected, and whether phantom power
is enabled. They also show when the microphone limiter is actively limiting
the level of the signal, by changing from amber to red.
Front Panel Controls, Connections & Indicators
2
Multi-Function Rotary Control
The rotary control has various functions which are dependent on the
current operating mode.
control to change the selection. Both microphone and headset type can be
selected with or without phantom power. A brief press on the rotary control
will return the unit to normal operation.
In the normal operating mode, the rotary control can adjust the talk level.
This is the level of the microphone signal routed to the talkback outputs.
The selected microphone gain settings and the subsequent microphone
output level at the rear panel connector are not changed.
To change the microphone gain and filter: once in the microphone gain
and filter setup mode, the talk buttons on channels 1-8 will illuminate
to show the approximate current gain setting for the currently selected
microphone. Turn the rotary control to increase or decrease the gain. With
no buttons illuminated, the gain is approximately 6dB. The gain increases
by approximately 8dB as each talk button is illuminated with the maximum
gain of approximately 69dB gain when all talk buttons are illuminated.
The talk level LEDs will show the current level of the microphone signal as
it exceeds 0dB and +8dB respectively, and the microphone signal can be
monitored in the headphones.
To adjust the talk level: first ensure that the function is enabled and the
required range of adjustment has been selected. See the Talk Level Settings
Page in the Embedded Web Server. Turn the rotary control to increase or
decrease the current talk level within the limits set by the talk level adjust
options. There is an additional option that requires the rotary control to
be pressed before any adjustment to the talk level can be made. With
this option selected, the adjustment mode will timeout after 1 second of
inactivity of the rotary control.
The rotary control also accesses the microphone select and microphone
gain and filter setup modes.
To access the microphone select and microphone gain and filter setup
modes: press and hold the rotary control for 3 seconds whilst in the normal
operating mode. The two talk level LEDs will illuminate red. Turn the rotary
control to select the mode to enter, either microphone gain and filter setup
mode when the two talk level LEDs are illuminated, or microphone select
mode when MIC, Phantom and HS LEDs are illuminated. When the required
LEDs are illuminated, press the rotary control to enter the associated mode.
If the rotary control is not turned or pressed for 3 seconds, this function will
timeout and the unit will return to normal operation. Please note, entering
microphone gain and filter setup mode resets the current talk level adjust
value to zero.
To change the selected microphone type: once in microphone select mode,
the currently selected microphone setting LEDs will flash. Turn the rotary
The state of the microphone filter is shown on the LS mute button LED.
If the LED is illuminated red, the filter is on. Press the LS mute button to
enable or disable the filter.
Once the required microphone gain and filter setting has been set, a brief
press on the rotary control will return the unit to normal operation.
Group Talk Button
The group talk button simultaneously activates all of the talk buttons that
have been included in the group talk function. By default, all channels are
included. When the group talk function is active, the button illuminates red,
as do the talk buttons on the channels activated by the group talk function.
By default, the button has a momentary action that will automatically latch
in the on state if pressed briefly.
Channel 1 to 8 Talk Buttons
Each talk button routes the currently selected microphone signal to the
corresponding talkback output. When a talk button is active, it illuminates
red. The channels audio call indication illuminates the talk button green
when the signal level on the corresponding 4W IN input rises above -12dB.
3
2
Front Panel Controls, Connections & Indicators
The audio call is not shown on talk channels that are active. By default, the
talk buttons have a momentary action that will automatically latch in the on
state if pressed briefly.
replaced by or mixed with the microphone signal, and the level of the feed
to the loudspeaker (not headphones/headset) is reduced by the level preset
by the dim potentiometer.
Channel 1 to 8 IFB/4W Select Switches
These switches select the operating mode for each channel, either 4 wire
or interruptible fold back. The IFB input to each channel can be either the
channels own 4W IN input, or one of the two dedicated programme inputs,
IFB A or IFB B. This selection is made in the configuration options using
either the on-board configuration mode or the embedded web server. See
the Configuration Options section. As an alternative to the standard IFB
modes, where the microphone signal interrupts the IFB signal when the
channel is active, an additional option allows the microphone signal to be
mixed with the IFB signal. In this mode, when a talk channel is activated,
the level of the selected IFB input signal on that channel is reduced by 12dB
prior to being mixed with the microphone signal.
Channel 1 to 8 Monitor Level Potentiometers
These controls set the level of the signal that is routed to the monitor
headphones/headset and loudspeaker from each channels input.
To use a talk channel in 4W mode: put the IFB/4W switch in the 4W
position. In this mode, the signal on the 4W IN input connector is routed to
the headphones/headset and loudspeaker at the level set by the channels
own monitor level potentiometer, with the overall level controlled by the
MON level potentiometer. When the talk button is pressed, the microphone
signal is routed to the channels talkback output at the TB OUT connector,
and the level of the feed to the loudspeaker (not headphones/headset) is
reduced by the level preset by the dim potentiometer.
Loudspeaker Dim Potentiometer
The loudspeaker dim pre-set potentiometer controls the level of
attenuation applied to the signal fed to the loudspeaker and rear panel
loudspeaker output when any of the talk channels are active, or the
loudspeaker dim remote input is active. The attenuation range is between
full on and muted and it is adjusted using a small flat blade screwdriver.
To use a talk channel in IFB mode: put the IFB/4W switch in the IFB
position. In this mode, the signal on the 4W IN input connector is routed to
the headphones/headset and loudspeaker at the level set by the channels
own monitor level potentiometer, with the overall level controlled by the
MON level potentiometer. The signal from the selected IFB input, either
the channels own 4W IN input or one of the dedicated programme inputs,
IFB A or IFB B, is routed to the talkback output at the TB OUT connector.
When the talk button is pressed, the signal at the talkback output is either
4
Loudspeaker Mute Button
The loudspeaker mute cuts the signal fed to the loudspeaker and the
loudspeaker output on the rear panel. The mute can also be activated via a
remote input, see the Remote section. The button has a latching action and
illuminates red when activated or flashes red to indicate the loudspeaker
mute has been activated by the remote input. The button also indicates
when the loudspeaker dim is active by illuminating green. The mute button
does not affect the signal routed to the headphones.
Monitor Level Potentiometer
The monitor level potentiometer controls the overall level of the signal
routed to the headset/headphone outputs, the loudspeaker and the
loudspeaker output on the rear panel.
Rear Panel Connections
3
Rear Panel Connections
4W Inputs
Talkback Outputs
IFB Inputs
Microphone
Output
Ethernet
Remotes
Mains Power
Inlet
Loudspeaker
Output
Fig 3-1: CM-TB8 Rear Panel
4W IN Input Connections
The transformer balanced 4W IN inputs are via 3 pin female XLR-3
connectors. These are the main audio inputs to each channel.
TB OUT Output Connections
The transformer balanced TB OUT talkback outputs are via 3 pin male XLR-3
connectors. These are the main audio outputs from each channel.
IFB A & B Programme Input Connections
The transformer balanced IFB inputs are via 3 pin female XLR-3 connectors.
MIC Output Connection
The electronically balanced microphone output is via a 3 pin male XLR-3
connector. It outputs the gain adjusted, level limited signal from the
selected microphone or headset input.
Remote Connections
The remote connections are via two 15-way ‘D’-type sockets. All of the
remote outputs are on the remote 1 connector, whilst the inputs are all on
the remote 2 connector. See the Remotes section on for connection details.
Ethernet Connection
The Ethernet connection provides 100Mb network capabilities via a RJ45
connector.
LS Output Connection
The loudspeaker output is via a ¼ inch (6.35mm) jack socket. When an
external loudspeaker is connected, the internal loudspeaker is muted.
5
4
Line-Up Tone Mode
Line-Up Tone Mode
The CM-TB8 has a built in Test Tone generator which selectively routes
a line-up tone of 1kHz at 0dB to all talkback outputs to assist channel
identification and cabling checks. There are two test tone modes, manual
and auto.
To enable line-up tone mode: press and hold the rotary control and the
group talk button and channel 1 and 2 talk buttons for 5 seconds. The group
talk button will flash amber to indicate the line-up tone mode has been
entered. The rotary control, group talk button and talk buttons can now be
released. By default, manual mode is enabled.
To switch between manual and auto tone modes: turn the rotary control
one position in either direction.
In manual line-up tone mode, press the talk buttons on each channel to
route test tone to the corresponding talkback output. Each talk button will
illuminate amber when pressed. When a button is released, the tone on
that talkback output will be muted.
In auto line-up tone mode, each of the eight talkback outputs are
automatically identified by a unique number of short tone bursts, lasting
0.25 seconds each, which are repeated every 5 seconds. Each talk button
flashes amber to indicate when tone is being routed to that channel, and
the number of pulses corresponds to the channel number.
The 4W IN inputs function normally and any signal present is still routed to
the loudspeaker and headphone monitor outputs. This could be useful in
allowing the user to receive instructions on which channel to output tone to
when using the test tone in manual mode.
To exit the line-up tone mode: press the rotary control once. The unit will
then return to normal operating mode.
6
Remotes
Remotes
The two remote connectors on the rear panel provide a selection of
remote inputs and outputs. All of the remote outputs are on the Remotes 1
connector and are open collector outputs, and all of the remote inputs are
on the Remotes 2 connector and are active low.
Remotes 1 – Outputs
Pin1:
Channel 1 Talk active – open collector output
Pin2:
Channel 2 Talk active – open collector output
Pin3:
Channel 3 Talk active – open collector output
Pin4:
Channel 4 Talk active – open collector output
Pin5:
Channel 5 Talk active – open collector output
Pin6:
Channel 6 Talk active – open collector output
Pin7:
Channel 7 Talk active – open collector output
Pin8:
Channel 8 Talk active – open collector output
Pin9:
Group Talk active – open collector output
Pin10: Loudspeaker Dim active – open collector output
Pin11: Loudspeaker Mute active – open collector output
Pin12: Channels 1-8 Audio Call active – open collector output
Pin13:Ground
Pin14:Ground
Pin15:Ground
5
Remotes 2 – Inputs
Pin1:
Channel 1 Remote Call – active low input
Pin2:
Channel 2 Remote Call – active low input
Pin3:
Channel 3 Remote Call – active low input
Pin4:
Channel 4 Remote Call – active low input
Pin5:
Channel 5 Remote Call – active low input
Pin6:
Channel 6 Remote Call – active low input
Pin7:
Channel 7 Remote Call – active low input
Pin8:
Channel 8 Remote Call – active low input
Pin9:
Loudspeaker Dim enable – active low input
Pin10: Loudspeaker Mute enable – active low input
Pin11: no connection
Pin12: no connection
Pin13:Ground
Pin14:Ground
Pin15:Ground
When a remote call is active, the corresponding talk button flashes amber.
This call condition takes priority over the audio level activated call input on
each channel. The loudspeaker mute input, when active, takes priority over
the mute button operation.
The remote outputs are “tally” indicators and the talk active outputs
indicate when any of the channel talk or group talk buttons are active. The
loudspeaker dim and mute outputs indicate the state of the signal routed
to the internal and external loudspeakers. The audio call active remote
output indicates when the signal level on one or more of the 4W IN inputs
is greater than -12dB.
7
6
Configuration Options
Configuration Options
The CM-TB8 has a wide range of user configurable options. These options
are arranged in sets, with an active set which contains the current working
settings, and six configuration set templates that allow settings to be stored
and recalled at a later date. Two of the configuration templates, sets 1 and
2, are read only and cannot be modified. The other four, sets 3 to 6, can be
used to store customised settings. This allows the unit to be preconfigured
for a range of user scenarios which can be instantly recalled. There are two
methods available for modifying the configuration settings, the on-board
configuration mode and the embedded web server. Any configuration
settings that are changed using either of these two methods only affect the
active set.
On-Board Configuration Mode
The on-board configuration mode allows a limited number of configuration
options in the active set to be modified without the need of a PC. It also
allows the active set to be saved to one of the four editable sets, 3 to 6.
To enter the on-board configuration mode: press and hold the rotary
control and channel 7 and 8 talk buttons for 5 seconds. The 2 talk level LEDs
and the LS mute button LED will flash red to indicate the configuration mode
has been entered. The rotary control and talk buttons can now be released.
There are four configuration options available in this mode and the MIC,
Phantom and HS LEDs illuminate red in sequence to indicate which option
is currently being displayed. Option 4 is shown when all three LEDs are
illuminated. The value of the selected option on a channel is shown by a
sequence of recurring red flashes on the corresponding talk button, one
flash equals mode 1, two flashes equals mode 2 etc.
To cycle through the options: press the group talk button once. The MIC,
Phantom and HS LEDs will change to indicate which new option is being
displayed.
8
To change the current option setting: press the corresponding talk button
once. The number of flashes will increase to indicate the new setting. Once
the maximum option mode setting has been reached, the value will wrap
around to mode 1.
The on-board configuration mode options are listed below:
Option 1 – Channel inclusion in the group talk function (MIC LED is
illuminated)
Mode 1 – channel is excluded from the group talk function
Mode 2 – channel is included in the group talk function
Option 2 – Channel IFB mode (Phantom LED is illuminated)
Mode 1 – 4W IN is IFB, Mic signal interrupts talkback signal when
talk is active
Mode 2 – IFB A IN is IFB, Mic signal interrupts talkback signal when
talk is active
Mode 3 – IFB B IN is IFB, Mic signal interrupts talkback signal when
talk is active
Mode 4 – 4W IN is IFB, Mic signal is mixed with talkback signal
when talk is active
Mode 5 – IFB A IN is IFB, Mic signal is mixed with talkback signal
when talk is active
Mode 6 – IFB B IN is IFB, Mic signal is mixed with talkback signal
when talk is active
Option 3 – Channel 1 & 2 telephone interface mode (HS LED is illuminated
Mode 1 – Normal mode
Mode 2 – Telephone mode (requires telephone expansion card to
be fitted)
Option 4 – Save the active set (MIC, Phantom and HS LEDs illuminated)
This option allows the current active set to be saved to set 3, 4, 5 or 6 by
pressing and holding the talk button on the channel corresponding to the
required set number for 3 seconds. The talk button will illuminate will
Configuration Options
flash red, then amber, then green to confirm the set has been saved. For
example, to save the active set to set 5, press and hold the channel 5 talk
button for 3 seconds.
Press and hold channel 3 Talk button for 3 seconds to save the
active set to set 3
Press and hold channel 4 Talk button for 3 seconds to save the
active set to set 4
Press and hold channel 5 Talk button for 3 seconds to save the
active set to set 5
Press and hold channel 6 Talk button for 3 seconds to save the active set to set 6
To exit the on-board configuration mode: press and hold the group talk
button for 3 seconds. The unit will then return to normal operating mode.
Embedded Web Server
The CM-TB8 has an embedded web server which provides easy access to all
of the configuration options through a web browser. It also gives access to
Address
1
9
2
.
1
6
8
.
0
.
1
2
4
MIC
Phantom
HS
Group
Talk
Talk
1
Talk
2
6
system settings and allows the firmware to be easily updated when new
releases are made available.
To use the embedded web server, the unit needs to be connected to a
network via the Ethernet port on the rear panel. By default, the CM-TB8
is configured as a DHCP client and when connected to a network, it will
search for a DHCP server in order to obtain its IP address. If no DHCP
server is found within 45 seconds, the unit will default to its default static
network settings. To order to access the unit on the network, it is first
necessary to determine the current active IP address.
To discover the current active IP address: press and hold the rotary
control and the group talk button for 3 seconds. All the LEDs on the
front panel will turn off. The rotary control and group talk button can
now be released. For each subsequent press of the rotary control, the
current digit within the IP address will be shown on the group talk and
talk buttons. The MIC, Phantom and HS LEDs indicate which digit is being
shown within the current part of the IP address. The LS mute button LED
illuminates to indicate a “dot” which separates each part of the address.
For example, for the address 192.168.0 124, the following sequence of
LEDs will be illuminated:
Talk
3
Talk
4
Talk
5
Talk
6
Talk
7
Talk
8
LS Mute
9
6
Configuration Options
After the last digit of the IP address has been displayed, the next press of
the rotary control returns the unit to the normal operating mode. If the
address is 0.0.0.0, a valid IP address has not yet been obtained from a DHCP
server within the 45 second timeout period.
Home Page
Once the IP address of the unit is known, simply type this into the address
bar of a web browser. The home page of the connected CM-TB8 will be
displayed.
Each page within the web server is accessed via one of the tabs in the menu
bar below the title banner. Some tabs also have drop down sub-menus.
Each page follows a similar format, the left side shows the main content
of the page, either information or options and settings, and the right side
gives a brief description of the each item. Pages that include configuration
options also have a submit button. This transfers the new settings on the
current page to the connected unit.
Fig 6-1: Home Page
The home page provides some general information about the connected
CM-TB8. The serial number, firmware and boot loader version numbers
should be quoted if you ever need to contact Sonifex Ltd about the unit.
10
Configuration Options
6
Network Settings Page
Display Settings Page
Fig 6-2: Network Settings Page
Fig 6-3: Display Settings Page
This page shows the network related settings. The unit name allows the
connected CM-TB8 to be easily identified if there is more than one unit on
the network. The IP address, subnet mask and gateway IP address are used
only if DHCP is disabled, or if a DHCP server is not detected on the network
within a timeout period of 45 seconds.
This page shows the display settings. The LED brightness setting changes
the illumination intensity of the front panel buttons and indicators to allow
for a range of installation environments.
11
6
Configuration Options
Microphone Settings Page
Talk Level Settings Page
Fig 6-4: Microphone Settings Page
Fig 6-5: Talk Level Settings Page
The first sub-item under the configuration tab shows the microphone
options. Both the microphone and headset inputs have individual gain
control, and the type option determines which settings are currently used.
Enable the phantom power option when using microphone or headsets that
require a 48V dc power supply. The filter option enables a band pass filter
that reduces the level of signals outside of the normal speech bandwidth.
Please note, updating the options on this page resets the current talk level
adjust value to zero.
The talk level adjustment range sets the amount of microphone gain
adjustment available. This is the second sub-item under the configuration
tab. If this feature is enabled, the adjustment is made by turning the rotary
control. An alternative option requires the rotary control to be pressed
before any adjustment can be made.
12
Configuration Options
Group Talk Settings Page
6
Channel Settings Page
Fig 6-7: Channel Settings Page
Fig 6-6: Group Talk Settings Page
The third sub-item under the configuration tab shows the group talk
settings. These settings determine which channels are active when
the group talk button is pressed. The exclusive mode option de-selects
active channels that are not included in group talk. With this option
disabled active channels are unaffected by group talk. The button mode
option selects the way the group talk button responds when pressed. In
momentary mode, group talk is active only when the button is pressed. In
latching mode, a separate button press is required to enable and disable
group talk. With the option set to auto, the button has a momentary action
that will automatically latch on or off if pressed briefly.
The fourth sub-item under the configuration tab shows the individual
channel settings. The selected IFB mode is active for each channel when
the front panel switch on that channel is in the IFB position. There are
three IFB inputs available to each channel, and there are options to allow
the microphone signal to be mixed with the IFB input signal rather than
interrupt it. The button mode setting provides similar options to the group
talk button mode. The telephone mode option is only available on channels
1 and 2 and only if a telephone expansion board is fitted.
13
6
Configuration Options
Load Settings Page
Save Settings Page
Fig 6-8: Load Settings Page
Fig 6-9: Save Settings Page
This page allows one of the six configuration set templates to be loaded in
the current active set. The details of the selected set are shown. Press the
load button to implement the new settings.
This page allows the current active configuration to be saved to one of the
four editable configuration set templates. The details of the current active
configuration are shown. Press the save button to store the settings in the
selected set.
14
Configuration Options
Update Page
6
To run the unit in boot loader mode: power up the unit whilst holding the
group talk button and channels 1, 2 and 3 talk buttons. The MIC, Phantom
and HS will flash green in a repeating cycle to indicate the unit is in boot
loader mode. Type the IP address of the unit into a web browser to access
the boot loader web server. Select the update tab, press the browse button
to select the firmware file and then press the update button.
Fig 6-10: Update Page
This page allows the firmware on the connected unit to be updated.
Updates will be made available on the Sonifex website for enhancements
and bug fixes. If a new version of firmware exists, download the file onto
a computer. Press the browse button to locate the file and select it. Then
press the update button to transfer the new firmware to the CM-TB8. The
update process will take approximately 20 seconds during which time the
unit will reboot automatically.
If the unit fails to reboot after a firmware update, this could indicate that an
incompatible file was selected or the file was corrupt. Try power cycling the
unit first; disconnect the mains power, wait several seconds then re-apply
power. If the unit still fails to boot, it is possible to force it into boot loader
mode. In this mode, the unit can accept new firmware as the boot loader
has its own simplified web server.
15
7
Configuration Options Defaults
Configuration Option Defaults
It is possible to return all configuration template sets to default settings.
Also, by returning the templates sets to defaults, the active set is
overwritten with the settings stored in template set 1. The default settings
for the templates sets are as follows:
Configuration Template Set 1 (read only)
Talk Adjust:
Enabled
Talk Adjustment Range:
±6dB
Group Talk Button Action:
Auto
Channel 1 Group Talk Inclusion: Enabled
Channel 1 IFB Mode:
4W input is IFB, Mic signal interrupts
talkback signal
Channel 1 Talk Button Action: Auto
Channel 1 Telephone Mode:
Disabled
Channel 2 Group Talk Inclusion: Enabled
Channel 2 IFB Mode:
4W input is IFB, Mic signal interrupts
talkback signal
Channel 2 Talk Button Action: Auto
Channel 2 Telephone Mode:
Disabled
Channel 3 Group Talk Inclusion: Enabled
Channel 3 IFB Mode:
4W input is IFB, Mic signal interrupts
talkback signal
Channel 3 Talk Button Action: Auto
Channel 4 Group Talk Inclusion: Enabled
Channel 4 IFB Mode:
4W input is IFB, Mic signal interrupts
talkback signal
Channel 4 Talk Button Action: Auto
Channel 5 Group Talk Inclusion: Enabled
Channel 5 IFB Mode:
4W input is IFB, Mic signal interrupts
talkback signal
16
Channel 5 Talk Button Action: Auto
Channel 6 Group Talk Inclusion: Enabled
Channel 6 IFB Mode:
4W input is IFB, Mic signal interrupts
talkback signal
Channel 6 Talk Button Action: Auto
Channel 7 Group Talk Inclusion: Enabled
Channel 7 IFB Mode:
4W input is IFB, Mic signal interrupts
talkback signal
Channel 7 Talk Button Action: Auto
Channel 8 Group Talk Inclusion: Enabled
Channel 8 IFB Mode:
4W input is IFB, Mic signal interrupts
talkback signal
Channel 8 Talk Button Action: Auto
Configuration Template Set 2 (read only)
Talk Adjust:
Enabled
Talk Adjustment Range:
±6dB
Group Talk Button Action:
Auto
Channel 1 Group Talk Inclusion: Enabled
Channel 1 IFB Mode:
4W input is IFB, Mic signal interrupts
talkback signal
Channel 1 Talk Button Action: Auto
Channel 1 Telephone Mode:
Enabled (disabled in telephone card not
fitted)
Channel 2 Group Talk Inclusion: Enabled
Channel 2 IFB Mode:
4W input is IFB, Mic signal interrupts
talkback signal
Channel 2 Talk Button Action: Auto
Channel 2 Telephone Mode:
Enabled (disabled in telephone card not
fitted)
Configuration Options Defaults
Channel 3 Group Talk Inclusion: Enabled
Channel 3 IFB Mode:
4W input is IFB, Mic signal interrupts
talkback signal
Channel 3 Talk Button Action: Auto
Channel 4 Group Talk Inclusion: Enabled
Channel 4 IFB Mode:
4W input is IFB, Mic signal interrupts
talkback signal
Channel 4 Talk Button Action: Auto
Channel 5 Group Talk Inclusion: Enabled
Channel 5 IFB Mode:
IFB A input is IFB, Mic signal interrupts
talkback signal
Channel 5 Talk Button Action: Auto
Channel 6 Group Talk Inclusion: Enabled
Channel 6 IFB Mode:
IFB A input is IFB, Mic signal interrupts
talkback signal
Channel 6 Talk Button Action: Auto
Channel 7 Group Talk Inclusion: Enabled
Channel 7 IFB Mode:
IFB B input is IFB, Mic signal interrupts
talkback signal
Channel 7 Talk Button Action: Auto
Channel 8 Group Talk Inclusion: Enabled
Channel 8 IFB Mode:
IFB B input is IFB, Mic signal interrupts
talkback signal
Channel 8 Talk Button Action: Auto
7
button will illuminate green when the button press is registered. Continue
to keep the button pressed for a further 5 seconds until it flashes green and
red. The loudspeaker mute button can now be released and the unit will
boot up into the normal operating mode.
Configuration Template Sets 3 to 6
By default, configuration templates sets 3 to 6 are initialised with the
settings from template set 1.
To return all configuration settings to default values: remove mains power
from the unit and allow it to switch off. Press the loudspeaker mute button
and keep it pressed whilst applying mains power. The loudspeaker mute
17
8
Connection Example
Connection Example
The following diagram shows a simple example of how the CM-TB8 can be
used in an outside broadcast scenario.
Fig 8-1: Connection Example
18
In this example, the CM-TB8
is connected to a CM-CU21
Commentator Unit. Any of the
CM-TB8 channels can optionally
be configured to operate in IFB
mode such that they receive either
the directors feed on IFB A or the
programme feed on IFB B. Direct
communication from the CM-TB8 to
any of the connected channels can
then interrupt the standing feed, by
use of the talk buttons. The remote
outputs from the two channels on
the CM-TB8 that are connected
to the commentator unit can be
configured to provide a remote call
indication when the talk channels
on the control unit are active. The
return audio talkback channels from
the CM-CU21 will then provide
a visual signal on the CM-TB8 if
a presenter at the commentary
position needs to gain the attention
of the control unit operator.
Button Operation Reference
9
Button Operation Reference
The following table list all the button combination required to enter the
various operating modes on the CM-TB8. The duration column details how
long the buttons need to be pressed to enter the associated mode.
FUNCTION
Enter MIC Menu
Load Config Set 1
into Active Set
Load Config Set 2
into Active Set
Load Config Set 3
into Active Set
Load Config Set 4
into Active Set
Load Config Set 5
into Active Set
Load Config Set 6
into Active Set
Enter Config Edit Mode
Save Active Set to Config
Set 3 (in Config Edit Mode)
Save Active Set to Config
Set 4 (in Config Edit Mode)
Save Active Set to Config
Set 5 (in Config Edit Mode)
Save Active Set to Config
Set 6 (in Config Edit Mode)
Exit Config Edit Mode
Enter Tone Mode
Display IP Address
Force Boot Loader Start
(on Power Up)
Reset Config to Defaults
(on Power Up)
TALK
ENCODER GROUP
1
2
3
4
5
6
7
8
LS MUTE
DURATION
3s
5s
5s
5s
5s
5s
3s
5s
3s
3s
5s
3s
3s
5s
3s
5s
5s
19
10
Connection Details
Connection Details
Headphone Output – ¼ inch (6.35mm) stereo jack socket
Tip:Left
Ring:Right
Sleeve:Ground
Microphone Input – Electronically balanced 3 pin female XLR-3
Pin1:Ground
Pin2:Phase
Pin3:Non-Phase
Headset – 5 pin female XLR-5 (microphone input is
electronically balanced)
Pin1:Ground
Pin2:
Microphone Phase
Pin3:
Microphone Non-Phase
Pin4:
Headphone Left
Pin5:
Headphone Right
4-Wire Inputs – Transformer balanced 3 pin female XLR-3
Pin1:Ground
Pin2:Phase
Pin3:Non-Phase
Talkback Outputs – Transformer balanced 3 pin male XLR-3
Pin1:Ground
Pin2:Phase
Pin3:Non-Phase
IFB Inputs – Transformer balanced 3 pin female XLR-3
Pin1:Ground
Pin2:Phase
Pin3:Non-Phase
20
Microphone Output – Electronically balanced 3 pin male XLR-3
Pin1:Ground
Pin2:Phase
Pin3:Non-Phase
Remotes 1 – 15-way ‘D’-type socket
Pin1:
Channel 1 Talk active – open collector output
Pin2:
Channel 2 Talk active – open collector output
Pin3:
Channel 3 Talk active – open collector output
Pin4:
Channel 4 Talk active – open collector output
Pin5:
Channel 5 Talk active – open collector output
Pin6:
Channel 6 Talk active – open collector output
Pin7:
Channel 7 Talk active – open collector output
Pin8:
Channel 8 Talk active – open collector output
Pin9:
Group Talk active – open collector output
Pin10: Loudspeaker Dim active – open collector output
Pin11: Loudspeaker Mute active – open collector output
Pin12: Channels 1-8 Audio Call active – open collector output
Pin13:Ground
Pin14:Ground
Pin15:Ground
Remotes 2 – 15-way ‘D’-type socket
Pin1:
Channel 1 Remote Call – active low input
Pin2:
Channel 2 Remote Call – active low input
Pin3:
Channel 3 Remote Call – active low input
Pin4:
Channel 4 Remote Call – active low input
Pin5:
Channel 5 Remote Call – active low input
Pin6:
Channel 6 Remote Call – active low input
Pin7:
Channel 7 Remote Call – active low input
Pin8:
Channel 8 Remote Call – active low input
Pin9:
Loudspeaker Dim enable – active low input
Pin10: Loudspeaker Mute enable – active low input
Connection Details
10
Pin11: no connection
Pin12: no connection
Pin13:Ground
Pin14:Ground
Pin15:Ground
Loudspeaker Output – ¼ inch (6.35mm) jack socket
Tip:
Speaker Positive
Ring:
Speaker Negative
Sleeve:Ground
21
11
Technical Specification
Technical Specification
Microphone and Headset Input
Gain Range:
+6dB to +69dB
Maximum Input Level:
-2dBu
Frequency Response:
±0.5dB 20Hz to 15kHz at MIC output Ref.
50dB gain @ 1kHz
Filter Bandwidth:
150Hz to 5500Hz
Headphone Output
Gain Range:
Maximum Output Level:
Frequency Response:
-80dB to +18dB
+18dBu
±1dB 20Hz to 15kHz
4-Wire and IFB Inputs
Maximum Input Level:
Frequency Response:
+18dBu
±1dB 20Hz to 15kHz
Talkback Output
Maximum Input Level:
Frequency Response:
Noise:
+18dBu
±1dB 20Hz to 15kHz
-85dB Average weighting
Loudspeaker
Power Output:
Volume:
Dim Range:
Connections
Microphone:
22
6W
Mute to full volume via front panel
potentiometer
Mute to full volume via front panel preset
potentiometer
XLR-3 pin female (electronically balanced)
Headphone:
Headset:
Fuse Rating:
¼ inch (6.35mm) stereo jack socket
XLR-5 pin female (electronically balanced
input)
8 x XLR-3 pin female (transformer
balanced)
2 x XLR-3 pin female (transformer
balanced)
8 x XLR-3 pin male (transformer balanced)
XLR-3 pin male (electronically balanced)
¼ inch (6.35mm) stereo jack socket
15-way ‘D’-type socket
15-way ‘D’-type socket
RJ-45, 10/100Mbps
4 x RJ11 6/4 (2 x line, 2 x handset) CMTB8T only
Universal filtered IEC, continuously rated
85-264VAC, 47-63Hz, 25W
Anti-surge fuse 2A 20mm x 5mm
Equipment Type
CM-TB8:
CM-TB8T:
CM-TB8G:
8 channel talkback control unit
Add-in card with 2 x telephone hybrids
Add-in card with 2 x GSM lines
4-Wire Inputs:
IFB Inputs:
Talkback Outputs:
Microphone Output:
Loudspeaker Output:
Remote Inputs:
Remote Outputs:
Ethernet:
Telephone:
Mains Input:
Physical Specification
Dimensions - Raw:
Including Connectors:
Dimensions (Boxed):
Weight:
48cm (W) x 34.0cm (D) x 4.2cm (H) (1U)
19” (W) x 4.3” (D) x 1.7” (H) (1U)
57cm (W) x 52cm (D) x15cm (H)
22.4” (W) x 20.5” (D) x 5.9” (H)
Nett: 5.54kg Gross: 6.5kg
Nett: 12.2lbs Gross: 14.3lbs
CM-TB8T Telephone Hybrid Expansion Card
12
CM-TB8T Introduction
The CM-TB8T is a dual PSTN, telephone hybrid expansion card. It extends
the talkback capability of the unit by allowing telephone calls to be made
and received on two independent analogue direct exchange or PSTN lines.
Outgoing calls can be dialled directly from the unit, or from an external
telephone handset connected to each of the two telephone channels. Once
calls have been connected, the user can talk to each channel individually or
conference 2 calls together.
The hybrids are fully configurable and are easy to setup. Simply select your
location from a country code list to automatically configure the telephone
interface for local line conditions. This setting also configures the relevant
auto disconnect mode which can be enabled if required.
Enabling the Telephone Interface
Before the telephone expansion card can be used, it needs to be enabled.
The two telephone lines are assigned to channels 1 and 2 on the CM-TB8
and they can be independently enabled using the embedded web server.
See the section on how to connect to the web server.
Once connected to the web server on the relevant CM-TB8, select the
Channel Settings page under the Configuration tab. Channels 1 and 2 will
have a new “Enable – PSTN Telephone Expansion Fitted” option available as
shown in Fig 12-1.
Fig 12-1: Channel Settings Page
Selecting this option will enable the telephone hybrid for the selected
channel. The required channel must be connected to an analogue direct
exchange line or PSTN line via the rear panel mounted RJ11 connector. An
optional telephone handset can also be connected to the RJ11 handset
connector. The telephone interface is not accessible unless a valid
telephone line connection is made.
Once the telephone interface has been enabled, the relevant country code
setting should be selected in the PSTN Settings page. This ensures that all
telephone approval parameters are met for operation of this unit in various
parts of the world.
23
12
CM-TB8T Telephone Hybrid Expansion Card
Making a Telephone Call
A telephone call can be made using an external telephone handset, or
directly by dialling one of the stored numbers.
Direct Dialling
The CM-TB8 can store 8 telephone numbers for direct dialling. These are
entered using the embedded web server. To dial a stored number, press
and hold the rotary control and then briefly press the talk button of the
required channel, either 1 or 2. The rotary control can then be released.
The talk buttons on channels 1 to 8 will illuminate amber if a valid
telephone number has been entered in the corresponding telephone
number edit on the PSTN page of the web server. For example, if telephone
numbers have previously been entered in positions 4 and 7, then only the
talk buttons on channels 4 and 7 will illuminate.
To dial the number, press one of the illuminated talk buttons. If no
button is pressed within 3 seconds, the unit reverts to its previous
state and the direct dialling mode is cancelled. When a valid number is
selected, the unit will connect to the telephone line and dial the number
and the corresponding talk button will illuminate amber. The audio on
the telephone line can be monitored on the headphone/headset and
loudspeaker outputs at the level set by the channels own monitor level
potentiometer.
Dialling Using an External Telephone Handset
Simply lift the receiver and dial the required number. The talk button on the
corresponding channel will fast flash amber to indicate the handset is off
hook. The talk button can be pressed to open the telephone line connection
to the CM-TB8 in parallel with the handset if required. The talk button
will then illuminate amber and the audio on the telephone line can be
monitored on the headphone/headset and loudspeaker outputs at the level
set by the channels own monitor level potentiometer.
24
Receiving a Telephone Call
An incoming telephone call will cause the talk button on the corresponding
channel to flash in the cadence pattern of the ring signal. If an external
telephone handset is connected, this will ring in the normal way. The call
can be answered by either pressing the talk button or lifting the handset. If
the handset is used to answer the call, the talk button will fast flash amber
to indicate the handset is off hook. If the handset is replaced prior to the
talk button being pressed, the call is dropped. If the talk button is pressed,
the CM-TB8 is connected to the telephone line and the talk button will
illuminate amber.
The telephone enabled channel can also be configured to automatically
answer an incoming telephone call. This is done in the PSTN settings page
of the embedded web server. If enabled, the call will be answered after 2
rings. For double cadence ring tones, both rings in the cadence pattern will
be counted.
Handling a Connected Telephone Call
Once a telephone call is connected to the unit, the talk button on the
corresponding channel illuminates amber. The channels audio call
indication illuminates the talk button green when the signal from the
telephone line rises above -12dB. The routing of audio through a telephone
enabled channel depends on the selection of the IFB/4W switch.
To use a connected telephone channel in 4W mode: put the IFB/4W switch
in the 4W position. In this mode, the signal from the connected telephone
call is routed to the headphones/headset and loudspeaker at the level set
by the channels own monitor level potentiometer, with the overall level
controlled by the MON level potentiometer. The signal is also routed to the
talkback output at the TB OUT connector. When the talk button is pressed,
the microphone signal is routed to the telephone line, and the level of the
feed to the loudspeaker (not headphones/headset) is reduced by the level
CM-TB8T Telephone Hybrid Expansion Card
preset by the dim potentiometer. The channels 4W input is not used in this
mode.
To use a connected telephone channel in IFB mode: put the IFB/4W switch
in the IFB position. In this mode, the signal from the connected telephone
call is routed to the headphones/headset and loudspeaker at the level set
by the channels own monitor level potentiometer, with the overall level
controlled by the MON level potentiometer. The signal is also routed to
the talkback output at the TB OUT connector. The signal form the selected
IFB input, either the channels own 4W IN input or one of the dedicated
programme inputs, IFB A or IFB, is routed to the telephone line. When the
talk button is pressed, the signal routed to the connected telephone line is
either replaced by or mixed with the microphone signal, and the level of the
feed to the loudspeaker (not headphones/headset) is reduced by the level
preset by the dim potentiometer.
12
Embedded Web Server
When the PSTN telephone expansion card is fitted, an additional web page
is available for configuring related settings. The PSTN Settings page appears
under the Configuration tab.
PSTN Settings Page
Once a telephone enabled talk channel is active, the corresponding talk
button illuminates red and the handset is automatically disconnected from
the telephone line.
Ending a Telephone Call
To end a telephone call, briefly press the channels talk button whilst holding
the rotary control. If an external handset is still off hook, the line will not
disconnect from it. The handset must be replaced to fully clear the line.
The telephone enabled channel can also be configured to automatically
disconnect a telephone call when the predefined line conditions or
disconnect tone are detected. These conditions are defined as part of the
selected country code settings and do not need to be configured separately.
An option to enable auto disconnect is in the PSTN settings page of the
embedded web server.
Fig 12-2: PSTN Settings Page
Telephone Numbers 1-8: The CM-TB8 can stored up to 8 telephone
numbers that can be accessed by both of the telephone interface channels.
Enable Call Signal: When an external caller is ringing one of the telephone
interface channels, this option routes an internally generated call signal to
the monitor headphones/headset and loudspeaker. The signal matches the
cadence pattern of the ring signal.
25
12
CM-TB8T Telephone Hybrid Expansion Card
Auto Answer: This option automatically answers an incoming telephone
call after 2 rings. For double cadence ring tones, both rings in the cadence
pattern are counted.
Auto Disconnect: This option enables automatic call disconnection. K-break,
line polarity reversal and dial tone disconnect modes are supported. The
auto disconnect mode is defined by the country code selection.
Receive Gain: This trim control adjust the level of the signal from the
telephone line in 3dB increments from -6dB to +6dB.
Transmit Gain: This trim control adjust the level of the signal routed to the
telephone line in 3dB increments from -6dB to +6dB.
Country Code Setting: This setting configures the telephone interface in
the CM-TB8 for the selected country or equipment type. It ensures that all
telephone approval parameters are met for operation in various parts of
the world.
Edit Settings: This option shows the current telephone interface parameters
and allows them to be set manually. This is not required for normal
operation and should only be done with settings provided by Sonifex Ltd.
Modifying these parameters could make the telephone interface unstable.
26
PSTN Telephone Interface Connection Details
Telephone Line – RJ11 Socket
Pin 1: N/C
Pin 2: Earth Recall
Pin 3: Telephone Line A
Pin 4: Telephone Line B
Pin 5: Ringer
Pin 6: N/C
Note: When not used in the UK, connect pins 3 and 4 only for correct
operation.
Telephone Handset – RJ11 Socket
The connection details are the same as for the telephone line connector.
CM-TB8G Mobile Telephone Expansion Card
CM-TB8G Introduction
13
Installing a SIM Card
The CM-TB8G is a dual GSM, mobile telephone expansion card. It extends
the talkback capability of the unit by allowing telephone calls to be made
and received on two independent mobile telephone lines. Outgoing calls
can be dialled directly from the unit from a predefined list of numbers. Once
calls have been connected, the user can talk to each channel individually or
conference 2 calls together.
The SIM card readers for the GSM telephone interface is located inside the
unit. To install a SIM card, proceed as follows:
The GSM modules are quad band units and can connect to virtually any
mobile telephone voice network - worldwide. They are automatically
configured to connect to the mobile network designated by a user installed
Subscriber Identity Module (SIM). The SIM card readers are internally
mounted to prevent unauthorised tampering.
SIM Card Requirements
Before the GSM telephone expansion card can be used, a valid mini-SIM card
needs to be installed for the required channels. In order for a SIM card to
work in the CM-TB8, the following requirements must be met:
1.
Ensure that mains power to the unit is switched off.
2.
Remove the 12 small Philips screws from the top panel of the unit
and remove the top panel.
3.
The GSM telephone expansion card is located toward the front of the
unit, and it is mounted on top on the main circuit board.
4.
The 2 SIM card readers are on the front of the GSM expansion card
and the SIM cards are inserted from the front, with the contacts
facing down. The SIM card reader for channel 1 is located on the
right, whilst channel 2 is on the left.
5.
Reposition the top panel and replace the 12 small Philips screws to
secure it.
Enabling the Telephone Interface
•
The SIM card needs to be enabled and pre-activated for the required
network.
•
The SIM card must not be locked with a PIN or PIN2 code or be in a
state where a PUK or PUK2 code is required.
Before the telephone expansion card can be used, it needs to be enabled.
The two telephone lines are assigned to channels 1 and 2 on the CM-TB8
and they can be independently enabled using the embedded web server.
See the section on how to connect to the web server.
•
In order to make telephone calls, the SIM card should be associated
with a suitable mobile telephone contract or pre-loaded with
sufficient call time credit. The CM-TB8 GSM interface does not allow
management of a “Pay As You Go” style mobile account.
Once connected to the web server on the relevant CM-TB8, select the
Channel Settings page under the Configuration tab. Channels 1 and 2 will
have a new “Enable – GSM Telephone Expansion Fitted” option available as
shown.
The CM-TB8 does not allow PIN or PUK codes to be entered, so a SIM that is
locked with a PIN or PIN2 code, or requires a PUK or PUK2 code cannot be
used.
PIN stands for Personal Identification Number, PUK stands for PIN Unlock Key.
27
13
CM-TB8G Mobile Telephone Expansion Card
Direct Dialling
Press and hold the rotary control and then briefly press the talk button of
the required telephone channel, either 1 or 2. The rotary control can then
be released. The talk buttons on channels 1 to 8 will illuminate amber if a
valid telephone number has been entered in the corresponding telephone
number edit on the web page. For example, if telephone numbers have
previously been entered in positions 4 and 7, then only the talk buttons
on channels 4 and 7 will illuminate. To dial the number, press one of the
illuminated talk buttons. If no button is pressed within 3 seconds, the unit
reverts to its previous state and the dialling mode is cancelled.
Dialling Using The Web Server
Use the left/right selection buttons either side of the dial button to select
the stored telephone number, and then press the dial button.
Fig 13-1: Channel Settings Page
Selecting this option will enable the mobile telephone interface for the
selected channel. The required channel must have a suitable GSM antenna
connected to the rear panel mounted SMA connector, otherwise the
channel will not be able connect to the mobile network.
Making a Telephone Call
A telephone call is made by dialling one of the stored numbers. The CMTB8 can store 8 telephone numbers and these are entered using the GSM
settings page of the embedded web server. Calls can be made and received
using the web server or directly using the front panel controls.
28
When a valid number is selected, the unit will attempt to dial the number
if network conditions and signal strength allow. When a number is being
dialled, the talk button on the channel will fast flash amber, and the status
will be shown on the web page. The audio on the telephone line can be
monitored on the headphone/headset and loudspeaker outputs at the level
set by the channels own monitor level potentiometer. Once a telephone call
is connected the corresponding talk button will illuminate amber.
Receiving a Telephone Call
An incoming telephone call will cause the talk button on the corresponding
channel to flash in the cadence pattern of the ring signal. The call controls
on the web page will change to allow handling of the call, and the callers’
number will be displayed if available.
To answer the call using the front panel controls: briefly press the channels
talk button.
CM-TB8G Mobile Telephone Expansion Card
To answer the call using the web server: press the answer button.
Alternatively, press the ignore button to drop the call.
When the call is connected, the channels talk button will illuminate amber.
The telephone enabled channel can also be configured to automatically
answer an incoming telephone call. This is done in the GSM settings page
of the embedded web server. If enabled, the call will be answered after 2
rings.
Handling a Connected Telephone Call
Once a telephone call is connected to the unit, the talk button on the
corresponding channel illuminates amber. The channels audio call
indication illuminates the talk button green when the signal from the
telephone line rises above -12dB. The routing of audio through a telephone
enabled channel depends on the selection of the IFB/4W switch.
To use a connected telephone channel in 4W mode: put the IFB/4W switch
in the 4W position. In this mode, the signal from the connected telephone
call is routed to the headphones/headset and loudspeaker at the level set
by the channels own monitor level potentiometer, with the overall level
controlled by the MON level potentiometer. The signal is also routed to the
talkback output at the TB OUT connector. When the talk button is pressed,
the microphone signal is routed to the telephone line, and the level of the
feed to the loudspeaker (not headphones/headset) is reduced by the level
pre-set by the dim potentiometer. The channels 4W input is not used in this
mode.
13
by the channels own monitor level potentiometer, with the overall level
controlled by the MON level potentiometer. The signal is also routed to
the talkback output at the TB OUT connector. The signal from the selected
IFB input, either the channels own 4W IN input or one of the dedicated
programme inputs, IFB A or IFB, is routed to the telephone line. When the
talk button is pressed, the signal routed to the connected telephone line is
either replaced by or mixed with the microphone signal, and the level of the
feed to the loudspeaker (not headphones/headset) is reduced by the level
pre-set by the dim potentiometer.
Once a telephone enabled talk channel is active, the corresponding talk
button illuminates red.
Ending a Telephone Call
To end a call using the front panel controls: briefly press the channels talk
button whilst holding the rotary control.
To end a call using the web server: press the end call button.
The telephone call will be cleared and the talk button will return to the unilluminated state.
Embedded Web Server
When the GSM mobile telephone expansion card is fitted, an additional
web page is available for configuring related settings. The GSM Settings
page appears under the Configuration tab.
To use a connected telephone channel in IFB mode: put the IFB/4W switch
in the IFB position. In this mode, the signal from the connected telephone
call is routed to the headphones/headset and loudspeaker at the level set
29
13
CM-TB8G Mobile Telephone Expansion Card
GSM Settings Page
Operator: This shows the network operators name that the channel is
registered to. If the channel registration failed, “Not Registered” will be
shown. An error code may also be shown to indicate why the channel
could not access the network. If an error code is not shown, registration
failure could be due to the quality of the network signal strength. Check the
antenna connection and position. A list of common error codes is shown
below:
Error code 18: The SIM card for this channel is absent or is not working.
Error code 19: The SIM is locked with a Personal Identification Number
(PIN). Please see SIM Card Requirements.
Error Code 20: The SIM is locked and requires a Pin Unlock Key (PUK).
Please see SIM Card Requirements.
Error Code 21: The SIM card has a fault.
Error Code 25: The SIM is locked with a Personal Identification Number
(PIN2). Please see SIM Card Requirements.
Fig 13-2: GSM Settings Page
The top section of the page shows information for Number, Operator, Signal
Strength and Status for each channel, and various controls for operating the
GSM telephone channel.
Number: The mobile telephone number of the channel can be entered here
for reference purposes only, it does not change the actual number assigned
to the SIM card. The mobile number given by the operator is not stored on
the SIM card, it is resolved at network level when required. Therefore, it is
not possible to show the number automatically.
30
Error Code 26: The SIM is locked and requires a Pin Unlock Key (PUK2).
Please see SIM Card Requirements.
Signal Strength: This shows the quality of the signal from the registered
network. Adjusting the position of the antenna can significantly affect the
signal strength.
Status: This shows the current status of the telephone channel. When
receiving an incoming call, the callers’ number will be shown here if
available.
Call Control: The controls shown will depend on the current status of the
telephone channel. When the channel is idle, the dial controls are shown.
When an incoming call is ringing, controls to either answer or ignore the call
are shown. When a call is connected, the end call control is shown.
CM-TB8G Mobile Telephone Expansion Card
Reset: The reset button is used to re-initialise the GSM telephone channel
if it becomes unresponsive. Please note: the reset process can take up to 30
second to complete during which time the channel will be disabled.
Show Call Log: This button shows the call log for the selected channel which
details the last 10 telephone calls. Each entry will show the telephone
number (if available), the date and time of the call and an indication of
whether the call was dialled (out), received (in) or missed (miss). At the
bottom of the call log is the delete call log button which clears all log
entries.
13
GSM Specifications
Operating Frequency:
Output Power:
Sensitivity:
Quad Band 850 / 900 / 1800 / 1900 MHz
Class 4 (2W) @ 850 / 900 MHz
Class 1 (1W) @ 1800 / 1900 MHz
-107 dBm (typ.) @ 850 / 900 MHz
-106 dBm (typ.) @ 1800 / 1900 MHz
Telephone Numbers 1-8: The CM-TB8 can stored up to 8 telephone
numbers that can be accessed by both of the telephone interface channels.
Enable Call Signal: When an external caller is ringing one of the mobile
telephone channels, this option routes an internally generated call signal to
the monitor headphones/headset and loudspeaker. The signal matches the
cadence pattern of the ring signal.
Enable End Signal: This option routes an internally generated audible signal
to the monitor headphones/headset and loudspeaker when a call is ended.
Auto Answer: This option automatically answers an incoming telephone call
after 2 rings.
Receive Gain: This trim control adjust the level of the signal from the
telephone line in 3dB increments from -6dB to +6dB.
Transmit Gain: This trim control adjust the level of the signal routed to the
telephone line in 3dB increments from -6dB to +6dB.
Once the required changes to the GSM options have been made, press the
Submit button to implement them.
31
www.sonifex.co.uk
t:+44 (0)1933 650 700
f:+44 (0)1933 650 726
[email protected]

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project