HANDBOOK
DHY-04 Digital TBU
DHY-04
Single Freestanding Automatic Digital TBU, AES/EBU &
Analogue I/O With Ethernet
DHY-04S
Single Rackmount Automatic Digital TBU, AES/EBU &
Analogue I/O With Ethernet
DHY-04T
Twin Rackmount Automatic Digital TBU, AES/EBU &
Analogue I/O With Ethernet
Manufacturers of audio & video
products for radio & TV broadcasters
DHY-04 Handbook
This handbook is for use with the following product:
DHY-04 Single Freestanding Automatic Digital TBU, AES/EBU & Analogue I/O With Ethernet
DHY-04S Single Rackmount Automatic Digital TBU, AES/EBU & Analogue I/O With Ethernet
DHY-04T Twin Rackmount Automatic Digital TBU, AES/EBU & Analogue I/O With Ethernet
©Sonifex Ltd, 2014
All Rights Reserved
Revision 1.01, September 2015
Sonifex Ltd, 61, Station Road, Irthlingborough,
Northants, NN9 5QE, England.
Tel: +44 (0)1933 650 700
Fax: +44 (0)1933 650 726
Email: sales@sonifex.co.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
Contents
Product Warranty - 2 Year Extended
Sonifex Warranty & Liability Terms & Conditions
1. Definitions
2. Warranty
Unpacking Your Product
Repairs & Returns
CE Declaration of Conformity and Approval Information
Safety & Installation of Mains Operated Equipment
Voltage Setting Checks
Fuse Rating
Power Cable & Connection
WEEE Directive
RoHS Directive
Atmosphere
1 What Is A Telephone Hybrid?
The Best Telephone Hybrid in the World Just
Got Better!
DHY-04 Single Freestanding Automatic Digital TBU
Available Formats
DHY-04S Single Rackmount Automatic Digital TBU
DHY-04T Twin Rackmount Automatic Digital TBU
2 Configuration & Controls DHY-04, DHY-04S, DHY-04T
Front Panel Controls
i
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iv
v
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v
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v
vi
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1
1
2
3
3
3
4
4
Power LED Indicator
Reset Button
Speed Dial Buttons
AES/EBU Lock LED
Line Hold/Connect Button
Gain Switches (Level To & From The Line)
LED Bargraphs
Status & Operating Mode Information
4
4
4
4
4
5
5
5
DHY-04 Internal Controls & Adjustments
5
Jumper and Select Switcher Functions
5
Rear Panel Controls & Connections
6
AES/EBU & Analogue Combined Line Output
Mic/Line & AES/EBU Input
Mic/Line Input Select Switch
Adjusting the Microphone Gain Level
6
6
6
6
Remotes
Conference Audio/Record Output
Telephone Handset
Telephone Line
RJ11 Telephone Connections
RS232 Serial Port
Ethernet Port
Mains Input
Protective Earth Terminal
Configuration Settings DIPSwitches
Country Code Selection
IEC Mains
Telephone Line
Handset
Remote Line Hold
Mic/Line Input
XLR Output
Using The AES/EBU Input & Output
Using the DHY-04
Call Established
Using the Conference Port as a Record Output
Using the Conference Port to Share a Stereo Digital Audio
Connection Between Two DHY-04 Units
4 Hybrid Technical Description
6
6
7
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7
7
8
8
8
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13
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13
13
13
14
14
15
16
16
17
Electrical Interface
Impedance Matching
Echo Cancellation
17
17
17
5 Serial Port Control
DHY-04 Serial Connection
19
19
SCI Software
Serial Interface Commands & Responses
Error Messages
19
19
19
6 Webserver & Network Discovery
20
Connecting to the Device
First Time Usage
MDNS-SD and Bonjour
Sonifex Service Discovery App
20
20
20
20
Home Page
Status
Line
22
22
22
Contents
Dial
22
Dialler Page
23
Call State
Dial
23
23
Configuration - Telephone
Country Code
Disconnect Settings
Answer Control
Buttons
Configuration - Telephone Details
Configuration-Remote
Input Port
Output Port
Configuration-Misc
Config Name
Description
Echo Duration
Conference Port Function
Force Analogue Output
Save Cancellation Coeffs
Password Setting
Network Settings
24
24
24
24
25
25
26
26
27
28
28
28
28
28
29
29
30
31
Bonjour Name
Static IP Address
Static Subnet Mask
Gateway IP Address
Dynamic Addressing
31
31
32
32
32
Device Info Page
Update Firmware Page
33
34
Update Firmware
Update Config Files
34
35
Log In
Bootstrap Mode
7 Technical Specification
Approvals Information
36
37
38
40
Manufacturer
Equipment Type
Approval File Reference
Functions
Specified Systems
40
40
40
40
41
Ringer Equivalence Number
Accessory Ports
Conditions
Series Connection
Facilities
Statutory Mark
Appendix 1 - Telephone Registers
AC Impedance Setting
41
41
41
41
41
41
42
43
Figures
Figures
Figure 1-1:
Figure 1-2:
Figure 1-3:
Figure 2-1:
Figure 2-2:
Figure 2-3:
Figure 2-4:
Table 2-1:
Figure 3-1:
Figure 3-2:
Figure 6-1:
Figure 6-2:
Figure 6-3:
DHY-04 Front & Rear.
DHY-04S Front & Rear.
DHY-04T Front & Rear.
Front Panel Controls.
Internal Position of Jumper J1.
Rear Panel Controls.
Configuration Settings Switches.
Supported Disconnect Tone Details by Country.
DHY-04 User Connections.
Conference Port Cable Connections.
Bonjour Service Discovery Page.
Legacy Service Discovery Page.
Home Page – for basic call control and
setting preset calls.
Figure 6-4: Dialler Page.
Figure 6-5: Telephone Configuration.
Figure 6-6: Detailed Telephone Configuration.
Figure 6-7: Remote Port Configuration.
Figure 6-8: Misc Configuration.
Figure 6-9: Password Setting Page.
Figure 6-10: Network Page.
Figure 6-11: Device Info Page.
Figure 6-12: Updates Page.
Figure 6-13: Log In Page. 36
Figure 6-14: Bootstrap Page.
2
3
3
4
5
7
8
12
13
16
21
21
22
23
24
25
26
28
30
31
33
34
37
Table 8-1:
Table 8-2:
Table 8-3:
Table 8-4:
Table 8-5:
Table 8-6:
Table 8-7:
Table 8-8:
Table 8-9:
Table 8-10:
Table 8-11:
Table 8-12:
Table 8-13:
Telephone Interface Register 16.
Telephone Interface Register 17.
Telephone Interface Register 18.
Telephone Interface Register 22.
Telephone Interface Register 23.
(Use sum of required values).
Telephone Interface Register 23 - RTO Values.
Telephone Interface Register 23 – RCC Values.
Telephone Interface Register 24.
Telephone Interface Register 26.
Telephone Interface Register 30.
(Use sum of required values)
Telephone Interface Register 30
- AC Impedance settings.
Telephone Interface Register 31.
(Use sum of required values)
Telephone Interface Register 59.
(Use sum of required values)
42
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42
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44
44
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 y 61 Station Road y Irthlingborough y Northamptonshire y NN9 5QE y United Kingdom
Tel: +44 (0)1933 650 700 y Fax: +44 (0)1933 650 726 y Email: technical.support@sonifex.co.uk y 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, 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 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);
‘the Price’ means the Price of the Goods and any other charges incurred by
the Company in the supply of the Goods.
iii.
the Goods are returned to the Company’s premises at the
Purchaser’s expense;
‘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.
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;
‘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.
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:
c.
ii
(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.
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.
Warranty
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
Telephone hybrid cable kit
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 technical.support@sonifex.co.uk for the repair/
upgrade/returns procedure, or for support & questions regarding the
product operation.
പ
iii
CE Certification
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:
EMC:
Safety:
Hybrid
Approvals:
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
Product:
Serial No:
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:
EN 60950: 1992 Safety of Information Technology Equipment
Including Electrical Business Equipment.
BS6301, BS7002, BS415, CTR21,
R&TTE directive (1999/5/EC)
Name:
Chris Stills
Position:
Technical Director
Date of Issue: 01 November 2014
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.
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.
v
Safety & Installation
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.
vi
What Is A Telephone Hybrid?
1 What Is A Telephone Hybrid?
Telephone hybrids, or telephone balance units (TBUs) provide the interface
between professional audio equipment and the public telephone network.
They provide protection for your equipment and the public telephone
lines, allowing for varying line signals and line conditions. Automatically
cancelling out the unwanted signal they also facilitate two-way
communication down a single telephone line.
Each telephone hybrid has a telephone line connection, a handset
connection and separate terminals for audio input and output from a
broadcast mixer, or other professional audio source.
A large proportion of Sonifex hybrids are used in radio and television
broadcasting applications for allowing external callers to be connected
to the studio mixing console. Most of the other units are supplied to
communication operations for allowing extremely effective conversion
between 4-wire audio circuits and standard telephone lines.
The Best Telephone Hybrid in the World Just
Got Better!
The DHY-04 telephone hybrid is an enhanced redesign of the DHY-03, the
best performing telephone hybrid in the world. It now has auto-sensing
combined analogue and AES/EBU inputs and outputs, front panel Speed
Dial buttons, together with an Ethernet interface to allow web browser
access to the configuration and internal settings. All whilst still retaining
stunning line balance rejection figures. For the best sounding audio calls
you’re likely to hear, you should specify the DHY-04.
Key new features of the unit include:
• Auto-sensing combined analogue or AES/EBU XLR input.
• AES/EBU sample rates up to 24 bit/96kHz accepted.
• Configurable analogue or AES/EBU XLR output.
• Ethernet port for remote configuration via web browser GUI.
1
• Remote dialling and line hold control via Ethernet.
• DTMF dial tone recognition for reporter remote access - a journalist can
dial into the unit which can recognise a pre-programmed DTMF numeric
code to automatically connect the journalist on-air.
• Four front panel speed-dial buttons for dialling 7 internally phone Speed
Dial numbers.
• Front panel Redial button for redialling the last number.
Product Function:
Provides separation between send and receive signals on an analogue
telephone network, provides professional level balanced input & output
signals and has echo cancellation.
Typical Applications:
Radio & TV station talk shows, telephony interface to the mixer.
Features:
• Fully automatic - adapts to varying line conditions and has automatic
signal limiting.
• Fully adaptive echo cancellation to 250msec - default is 24msec.
• 70dB typical line balance rejection offering superb performance and
crystal clear audio.
• Front panel input and output gain controls.
• Front panel LED metering of receive and send signals.
• Built-in conferencing for 2 hybrids, so that a single telco channel on a
mixing desk can receive 2 calls.
• Integrated ring detector - automatic call answering after a predetermined number of rings.
• Automatic call disconnection. Fitted with K-break, line polarity reversal
and dial tone disconnect detection, defined by the country selection.
• Automatic ducking facility allows the talent to ‘shout-down’, or talk over,
a caller by reducing the gain of the caller’s signal if it goes above a certain
level.
1
1
What Is A Telephone Hybrid?
• Local and remote line hold switching - calls can be remotely switched
through a mixing console.
• Line hold/release button to control line hold circuit, illuminates to
indicate the status of the line and flashes to show ring status.
• DTMF tone recognition allowing a opto-isolated GPI output to be made
on receipt of selected DTMF tones, e.g. for starting a studio automation
recorder automatically to record a remote telephone interview.
• International operation with built-in configurable settings for each
country.
DHY-04 Single Freestanding Automatic Digital TBU
Figure 1-1: DHY-04 Front & Rear.
2
• Country selection allows the unit to provide line impedance and a
simulation circuit to match the country.
• RS232 serial port for remote control of the TBU & DTMF tone dialling.
• Remote port distributes the remote line connect switch and tally output,
a momentary/latch selector and the DTMF detect output.
• The remote line connect switch can be either momentary or latching in
its action.
• Balanced mic/line input - 10k balanced input selectable for 0dBu clean
feed line, or microphone level with adjustable gain.
What Is A Telephone Hybrid?
• Balanced output - 0dBu low impedance balanced output, with output
gain settings.
• Record output - the conferencing output can be set to give an output to
record just the caller or a mix of the caller and mic/line input signals for
recording both sides of the telephone conversation.
• Line limiter, bandpass filter and output noise gate with preset threshold
providing low distortion audio.
1
• Built in universal power supply between 90V AC and 250V AC, 47-63Hz,
IEC mains input.
• ETSI approval compliant with European PTT specifications.
Available Formats
The DHY-04 digital telephone hybrids are available in three different
DHY-04
DHY-04S
DHY-04T
Single automatic digital telephone hybrid, free standing
Single automatic digital telephone hybrid, rackmount
Twin automatic digital telephone hybrid, rackmount
DHY-04S Single Rackmount Automatic Digital TBU
Figure 1-2: DHY-04S Front & Rear.
DHY-04T Twin Rackmount Automatic Digital TBU
Figure 1-3: DHY-04T Front & Rear.
3
2
Configuration & Controls - DHY-04, DHY-04S, DHY-04T
2 Configuration & Controls DHY-04, DHY-04S, DHY-04T
Front Panel Controls
Power LED Indicator
The power LED indicates that the equipment is powered and operational
when illuminated.
Reset Button
In the unlikely event that the DHY-04 unit fails to respond, press the reset
button to reboot the unit.
In extremis (especially valuable when the network settings have been
incorrectly entered) the unit can clear the settings to factory default by
pressing the reset three times in succession as follows – press reset; wait
for 7 seconds; press reset again; wait for 7 seconds; press reset again and
the unit will clear all the current settings and return to the factory defaults.
Speed Dial
Buttons
Power
LED Indicator
4
AES Lock
LED
Speed Dial Buttons
Press the appropriate button to call Speed Dial settings 1-4. Press and hold
buttons 1-3 to call Speed Dial numbers 5-7 or press and hold Speed Dial 4
to redial the last number. The numbers are configured using the embedded
webserver.
AES/EBU Lock LED
This is a red/green LED with green indicating a successful lock to the
incoming AES/EBU signal, i.e. a valid AES signal is present. The LED is red for
a non-valid AES/EBU input.
Line Hold/Connect Button
This is the front panel button used to connect calls to, and disconnect calls
from, the telephone line. The line connect button flashes when an incoming
call is detected and illuminates to indicate the call has been connected.
Operation of this button can be remotely controlled by GPI.
Line Hold/Connect Gain Switches
Button
Level Adjustment
Reset Button
Figure 2-1: Front Panel Controls.
LED
Bargraphs
Configuration & Controls - DHY-04, DHY-04S, DHY-04T
Gain Switches (Level To & From The Line)
These switches allow gain/attenuation to be applied to the incoming &
outgoing analogue audio. Each switch has 3 positions. Rotating the switches
clockwise give gains of -6dB, 0dB & +6dB. The normal position for the
transmit gain to the telephone line (lower switch) is 0db and for the receive
gain from telephone line (upper switch) is –6dB.
LED Bargraphs
These 8 position bargraphs, by default, indicate the signal levels of the
incoming XLR audio signal from the mixer (lower) and outgoing XLR audio
to the mixer (upper). For best operation set the signal gain switches to
achieve all 3 yellow LEDs mostly illuminated with occasional audio peaks
lighting the first red LED.
The scale indicates from left to right: Green (-30dB, -18dB, -6dB); Yellow
(-3dB, 0dB, +3dB); & Red (+6dB, +9db).
Status & Operating Mode Information
The LED display is also used to indicate special operating modes and other
settings as follows:
• Alternating 2 LEDs on, 2 LEDs off pattern indicates that the DHY-04 is
checking the status of the Line Connect Button to test the Bootstrap
Mode (see page 36)
• Alternating 4 LEDs on, 4 LEDs off pattern indicates that the DHY-04 has
entered Bootstrap mode, because either the Line Hold/Connect Button
was held down for approximately 10 seconds at power up, or the main
code has been corrupted (most likely due to a previous incomplete
firmware update).
• Alternating 8 LEDs on, 8 LEDs off pattern indicates that the DHY-04 has
received an update command from the web page and is updating the
firmware (valid in either Bootstrap or Normal operation).
• On normal power up, the top row of LEDs shows the current country
selection (see table 2-1) with LEDs numbered from left to right reflecting
the DIPSwitch settings.
2
DHY-04 Internal Controls & Adjustments
If you need to get inside the unit to make configuration adjustments, simply
remove the 4 screws in the corners of the rear panel. The rear panel and
main PCB will slide backwards out of the metal chassis.
When re-inserting the main PCB, ensure that the PCB edges are in the
runners inside the chassis and also that the power LED and line connect
button are in the correct place in the front panel.
Warning: The power must be switched off at the supply or the power lead
must be disconnected before attempting to open the unit. Removal of the
cover can expose dangerous voltages.
Warning: The telephone line plug should be disconnected from the
telecommunications network exchange line before removing the cover.
Jumper and Select Switcher Functions
Put a 2 pin jumper over J1 to switch in an extra 10dB of audio input gain to
allow for use of domestic level mixing desks.
Figure 2-2: Internal Position of Jumper J1.
5
2
Configuration & Controls - DHY-04, DHY-04S, DHY-04T
Rear Panel Controls & Connections
AES/EBU & Analogue Combined Line Output
The line output is an XLR 3 pin male connector with the following
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analogue or AES/EBU audio by following the input, i.e. a digital input
produces a digital output.
Pin2
Phase Signal
Pin 1: Screen
Pin 1
Pin 2: Phase
Screen Signal
Pin 3: Non-Phase
Pin 3
Non-Phase Signal
Mic/Line & AES/EBU Input
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floating). It is autosensing for either analogue balanced or AES/EBU (left
channel) signals.
Pin2
Phase Signal
Pin 1: Screen
Pin 1
Pin 2: Phase
Screen Signal
Pin 3: Non-Phase
Pin 3
Non-Phase Signal
Mic/Line Input Select Switch
This push-button switch sets the input signal mode:
Switch depressed (in)
Switch not depressed (out)
- Mic input mode selected
- Line input mode selected
Adjusting the Microphone Gain Level
The Mic Level preset potentiometer controls the level of the input signal
when the Mic/Line Input Select Switch is set to Mic input. The input signal
level in Line mode is factory set and is not affected by this control. The Mic
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with a maximum gain of 70dB. Use a jeweller’s screwdriver to adjust the
gain between 70dB and 52dB. The gain range can be extended by ±6dB by
using the front panel ‘Level to The Line’ switch.
6
Remotes
The remote port allows you to control the line hold circuit from a mixing
desk or other remote device and also outputs opto-isolated outputs to
indicate the line hold status and the DTMF detect function.
The remote connector is a 9-way female (socket) ‘D’ type. To remotely
control the line connect, connect pin 1 to pin 2. The action of this remote
can act as momentary or latching by pin 6 having no connection or
connecting to 0V respectively.
Pins 3 & 7 is an opto-isolated remote line connect indicator and pins 5 & 7
is an opto-isolated DTMF detect output. They can use the local supply pins
4 & 8 to drive an LED indicator or a low current load.
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Remote Line Connect Switch
Common – 0V
Opto-Isolated Line Connect Indicator - NPN Emitter
Common – 0V
Opto-Isolated User GPO (DTMF Detect*) Indicator - NPN Emitter
User GPI (Momentary/Latch Line Connect Switch - connect to
0V for latching action*)
Pin 7: Opto-Isolated Line Connect Indicator - NPN Collector
Pin 8: 5V out (current limited supply for pins 7 & 9)
Pin 9: Opto-Isolated User GPO Indicator - NPN Collector
The remote line connect indicator mimics the front panel Line Hold/
Connect Switch lamp, i.e. it flashes when ringing and is on when the line is
held.
User GPO and GPI have their default functions (*) set to the same use as
the DHY-03.
Conference Audio/Record Output
This is an RJ45 analogue audio connector to cross connect to another
DHY-04. This will allow a single TBU channel on a mixing desk to handle 2
calls, one to each DHY-04. Alternatively the conference output signals can
Configuration & Controls - DHY-04, DHY-04S, DHY-04T
be used as a record output by using the webserver interface. The output
is then a sum of the caller and main audio input so both sides of the
conversation can be recorded from this output.
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
N/C
N/C
Conference Input (phase)
Conference or Record Output (phase)
Conference or Record Output (non-phase)
Conference Input (non-phase)
N/C
N/C
2
Telephone Line
This is the telephone line connection and is an RJ11 6/4 socket. Two cables
are supplied with the unit, to connect this either to a UK BT line jack socket,
or an RJ11 socket. The telephone line is connected via Pins 3 and 4 on the
RJ11 and Pins 2 and 5 on the BT Plug (the latch adjacent to Pin 6).
RJ11 Telephone Connections
Pin 1: N/C
Pin 4:
Pin 2: Earth recall
Pin 5:
Pin 3: Telephone line A
Pin 6:
Telephone line B
Ringer
N/C
Note: When not used in the UK, connect pins 3 and 4 only for operation.
Telephone Handset
This is the connection for a telephone handset and is an RJ11 6/4 socket.
There is a converter lead supplied with the DHY-04 for accepting a standard
UK BT605A telephone plug.
RS232 Serial Port
The serial port allows direct connection to a 9 way ‘D’ type connector on a
PC via a pin to pin cable. See chapter 5 for details about this interface.
The connection details are the same as for the Telephone Line connector.
Pin 1: N/C
Pin 2: TxD
AES/EBU & Analogue
Output
Mic/Line/AES/EBU
Input
Mic Level
Figure 2-3: Rear Panel Controls.
Remotes
Connector
Telephone
Handset
Mic/Line Input Conference
Select Switch
Audio
Telephone
Line
Configuration
Settings Switches
Pin 6:
Pin 7:
Serial RS232
Port
N/C
CTS
Earth Bond
Point
Mains IEC
Inlet
Ethernet
Port
7
2
Configuration & Controls - DHY-04, DHY-04S, DHY-04T
Pin 3: RxD
Pin 4: N/C
Pin 5: Ground
Pin 8:
Pin 9:
RTS
N/C
Ethernet Port
This is an RJ45 port which should be connected via CAT5 cable to an
Ethernet device or switch. The port will automatically set the pins to suit
(Auto-MDX) and select the maximum available speed (10Mbps, 100Mbps or
1Gbps) depending on the connected infrastructure (Auto-Negotiation).
Mains Input
The power supply is connected via a filtered IEC Plug and is continuously
rated 85-264V AC @ 47-63Hz.
Protective Earth Terminal
This earth bond screw terminal is a screen terminal that must be connected
to an earth point.
1
2
3
4
5
6
7
8
ON
Figure 2-4: Configuration Settings Switches.
8
Country Set on
Power Up
Network
Cancellation Enable
Unused
Force Static
IP Address
Auto Answer Enable
Auto
Disconnect Enable
Ducking Enable
Noise Gate Select
OFF
Configuration Settings DIPSwitches
The SETTINGS switches are used to configure the DHY-04 in the modes
that you want it to operate. A label on the top panel of the unit shows the
orientation of the switches:
The following paragraphs describe the function of each switch; the default
or normal position is shown in curly brackets.
Noise Gate Select - SW1 {ON}
An output noise gate operates when the telephone signal is below the noise
gate threshold control. This noise gate reduces the output gain by 34dB
during low level signal conditions. This eliminates the effects of telephone
line cross talk. The noise gate can be switched off if you don’t wish to use it
by switching SW1 to the OFF position.
Ducking Enable - SW2 {ON}
This switch allows the received signal to be automatically attenuated by
18db when both received and sent audio are present in the hybrid. This
allows an operator in the studio to talk over the caller at all times.
Auto Disconnect Enable - SW3 {ON}
When SW3 is enabled (ON) the DHY-04 automatically disconnects from the
telephone line by detecting the appropriate disconnect regime selected for
the specific country according to the selected country code (see Table 2-2).
Line reversal and K-break work by changing the voltage on the line and
have parameters settings which indicate a duration range for which this
voltage change must be present. Tone detection has a more complicated
and extensive parameter set. A variety of single or dual tones with level
control are available together with the ability to handle cadence patterns,
where known countries disconnect requirements are preset, but if not the
ETSI default of 400Hz tone is used. These parameters can be defined to use
standard tones or the ‘User’ sets which are set via the webserver. You may
need this capability if your telephone system provides non-standard call
progress tones.
Configuration & Controls - DHY-04, DHY-04S, DHY-04T
Ring Detector (Auto Answer) Enable - SW4 {ON}
This switch enables the integrated ring detector, which automatically
answers incoming calls after the number of rings set using the webserver
(see page 24, Configuration - Telephone). The default is 2 rings.
Note double cadence ring tones count both rings in the cadence pattern.
Force Static IP Address – SW6 (ON)
When SW6 is enabled (ON) during the unit power-up routines, the Network
settings are overridden to force the unit to use a static IP address of
192.168.0.100 with a subnet mask of 255.255.255.0
Network Cancellation Enable – SW7 {ON}
When switch SW7 is enabled (ON) the DHY-04 performs the echo
cancellation routine on the incoming signal from the telephone line. This
would be the normal operational setting, but it may be disabled for special
circumstances.
Country Set on Power Up – SW8 {OFF}
SW8 is only read on power-up and needs to be ON to set the specific
country code to be used for the unit (set ON the remaining switches to
define the country code - see Table 2-1 on page 10). After power up,
the switches should be returned to their normal position, otherwise the
unit may fail to work correctly. The country code can also be changed via
the Ethernet port webserver, but in either case when the country setting
is altered, any calibration parameters are discarded as they will most likely
now be incorrect. These parameters include tuned hybrid impedance
settings & coefficients and default cancellation calculation coefficients.
2
Country Code Selection
The correct country code selection is essential for proper operation of the
DHY-04 unit. It ensures that all telephone approval parameters are met
for operation of this unit in various parts of the world. The table following
is likely to change with additional countries or PABXs and possible detail
changes for existing countries. However the actual country codes are fixed
and will not alter. For the latest table please refer to our website www.
sonifex.co.uk/dhy04
The country codes are selected on power up, by setting DIPSwitch 8 of the
SETTINGS on the rear panel to the “ON” position and setting DIPSwitches
1-7 as per the following table or from the Webpage. Once the system has
initialised – indicated by the chase pattern of LEDs on the lower bargraph,
then all switches should be returned to their previous position for the
correct operation of the unit. ETSI, the European Telecommunications
Standards Institute (http://www.etsi.org/) govern the telcoms standards
used and in the majority of cases, it has been provisionally assumed that
the disconnect tones are at the ETSI standard - Code 1 in the following
table.
9
2
Configuration & Controls - DHY-04, DHY-04S, DHY-04T
Country
ETSI – TBR21
Argentina
Australia
Austria
Bahrain
Belgium
Brazil
Bulgaria
Canada
Chile
China
Colombia
Croatia
Cyprus
Czech Republic
Denmark
Ecuador
Egypt
El Salvador
Finland
France
Germany
Greece
Guam
Hong Kong
Hungary
Iceland
India
Indonesia
Ireland
Israel
Italy
Japan
10
Code Tone
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Disconnect Type Frequencies
400Hz
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
Disconnect
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Line Reversal
Details
DIPSwitch Set On Power Up
1
2
1+2
3
1+3
2+3
1+2+3
4
1+4
2+4
1+2+4
3+4
1+3+4
2+3+4
1+2+3+4
5
1+5
2+5
1+2+5
3+5
1+3+5
2+3+5
1+2+3+5
4+5
1+4+5
2+4+5
1+2+4+5
3+4+5
1+3+4+5
2+3+4+5
1+2+3+4+5
6
1+6
Configuration & Controls - DHY-04, DHY-04S, DHY-04T
Country
Japan 2
Japan like Maple
Japan like China
Jordan
Jordan/Panasonic
Kazakhstan
Kuwait
Latvia
Lebanon
Luxembourg
Macao
Malaysia
Malta
Mexico
Morocco
Netherlands
New Zealand
Nigeria
Norway
Oman
Pakistan
Peru
Philippines
Poland
Portugal
Romania
Russia
Saudi Arabia
Singapore
Slovakia
Slovenia
South Africa
South Korea
Code Tone
112
109
110
34
113
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
Disconnect Type Frequencies
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
Disconnect
Line Reverse
Line Reverse
Line Reverse
Continuous
Line Reverse
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Line Reversal
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Details
2
DIPSwitch Set On Power Up
5+6+7
1+3+4+6+7
2+3+4+6+7
2+6
1+5+6+7
1+2+6
3+6
1+3+6
2+3+6
1+2+3+6
4+6
1+4+6
2+4+6
1+2+4+6
3+4+6
1+3+4+6
2+3+4+6
1+2+3+4+6
5+6
1+5+6
2+5+6
1+2+5+6
3+5+6
1+3+5+6
2+3+5+6
1+2+3+5+6
4+5+6
1+4+5+6
2+4+5+6
1+2+4+5+6
3+4+5+6
1+3+4+5+6
2+3+4+5+6
11
2
Configuration & Controls - DHY-04, DHY-04S, DHY-04T
Country
Code Tone
Disconnect Type Frequencies
400Hz *
400Hz *
400Hz *
400Hz *
400Hz *
400Hz
400Hz *
400Hz *
400Hz *
400Hz *
Disconnect
Details
Spain
Sweden
Switzerland
Syria
Taiwan
TBR21 - ETSI
Thailand
Turkey
UAE
United Kingdom I
United Kingdom II
United States I
United States II
United States III
Yemen
Avaya Media Gateway
Nortel PABX
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
111
114
Maple Audio
ELMEG ICT-88 PABX
115
116
421Hz
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
K-Break
Continuous
Line Reversal
Continuous
Continuous
Line Reverse
Cadence 250ms
On/250ms Off
Line Reversal
Cadence
PHILIPS SOPHO PABX
117
425Hz
Cadence
Broadcast Bionics
118
N/A
Broadcast Bionics
PhoneBox - Avaya
User Set
119
400Hz
120
400Hz *
Always On
Always Connected
Cadence
375ms On
375ms Off
Continuous
Default values as ETSI
400Hz *
440Hz
400Hz *
421Hz
Table 2-1: Supported Disconnect Tone Details by Country.
(* - Provisional Disconnect Tone Setting Uses TBR21 default of 400Hz Continuous)
The Nortel, ELMEG and PHILIPS settings are for PABXs used in the
Netherlands which have non-standard disconnect tones.
12
DIPSwitch Set On Power Up
1+2+3+4+5+6
7
1+7
2+7
1+2+7
1 OR 3+7
1+3+7
2+3+7
1+2+3+7
4+7
1+4+7
2+4+7
1+2+4+7
3+4+7
1+3+4+7
1+2+3+4+6+7
2+5+6+7
200ms On
400ms Off
250ms On
250ms Off
1+2+5+6+7
3+5+6+7
1+3+5+6+7
2+3+5+6+7
1+2+3+5+6+7
1+4+5+6+7
The unit can be programmed with other settings, so please contact us if you
need the settings for a different country to be implemented. In this case, it
would be necessary to have a technical specification of the line conditions,
an audio recording or a specification of the disconnect tone parameters
(tone, line reversal or K-break).
Connecting the DHY-04 TBU
3 Connecting the DHY-04 TBU
IEC Mains
Connect the earth and mains power connections as per the information
given in the Configuration & Controls sections of the handbook. The hybrid
unit should be connected with reference to the following diagram.
Handset
Microphone
Telephone Line
Ethernet
Earth
Remote
Divert
Input to
Telephone
Channel
Mains
Power
Output from
Mixer
Clean-Feed
Output
Mic/Line Input
Remotes
Handset
Line
Ethernet
Earth
Power
DHY-04
Mixing Desk
Figure 3-1: DHY-04 User Connections.
Telephone Line
The telephone line socket is connected to the telephone network using
the RJ11 to RJ11 cable provided. An adaptor is provided to connect to a
standard BT socket.
Handset
A simple telephone handset can be used to take and make calls when
plugged into the equipment handset connector. An adapter is provided if
the handset is fitted with a BT plug as standard.
3
Remote Line Hold
A remote switch may be connected at the Remotes socket in order to
control the line connect button from, say, the telco channel of a mixing
desk.
Connect the output from the mixing desk “clean-feed” to the mic/line input
of the DHY-04, with the mic/line input select switch set to “Line”. A cleanfeed is a signal produced by a telco module on a mixer which is used as the
output to be fed back to a caller on a telephone line. The cleanfeed is a sum
of all the other signals which constitute the programme output, except for
the caller’s audio (this is so that the caller doesn’t hear him/herself in the
ear-piece). A cleanfeed signal will generally be of a better quality than a
mix-minus signal.
Mic/Line Input
The characteristics of the mic/line input are determined by the state of
the mic/line configuration selection switch. It is a balanced bridging input
and in line mode will accept normal signals at 0dBu peaking to +8dBu
from a sound mixer clean feed. In mic mode the unit will accept 200 Ohm
microphone level signals with a maximum gain of 74dB. It is suitable for a
wide range of microphones and the available gain is 74dB to 40dB, which
can be adjusted by the mic level pre-set mounted on the rear panel. The
input circuitry to the DHY-04 has a very effective limiter, which will prevent
high level overloading problems. Ideally, the maximum input level should
not exceed +12dBu. This limiter is used for both line and mic input modes.
XLR Output
Connect the output of the DHY-04 to the telco input of the mixing console.
The output connection will deliver a balanced/floating low impedance
signal of 0dBm from the telephone line. The output of the digital hybrid
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useful bandwidth of the equipment. The bandwidth is restricted by the
line conditions between 250 Hz and 4 kHz. The output stage is capable of
driving into 600 Ohm loads at up to +8dBu. Termination of the output is
13
3
Connecting the DHY-04 TBU
not necessary however and direct connection can be made into the mixer
telephone return channel.
The output stage has a 3-way gain switch control, mounted on the front
panel (Level to Line), which may be set to give 0dB signals at the output. In
addition an output noise gate operates when the telephone signal is below
the noise gate threshold control. This noise gate reduces the output gain by
34dB under no signal conditions, eliminating the effects of telephone line
cross talk.
Isolation of better than 71dB is created between the input and output
connectors when the hybrid unit is functioning on an exchange line.
Using The AES/EBU Input & Output
The unit is also capable of working in the digital domain by supplying AES/
EBU digital audio into the input XLR. The unit will automatically detect
this digital signal and so will change the output to a digital audio signal
synchronised to this input. The unit will treat 0dbFS to be the equivalent
to a +18dbU analogue signal. The AES lock LED will indicate when a valid
AES signal is present. Signals above -6dbFS have AGC applied to limit the
internal signal to a maximum of -6dbFS (equiv +12dbU).
Note: The earth bond at the screw terminal must be connected to a
technical earth to ensure the safe operation of the equipment under all line
conditions.
Using the DHY-04
First Use
Before using the DHY-04 you should ensure that it is connected as figure 3-1
and that the unit is setup for the correct line conditions.
EITHER
1. Directly from the webpage select the country code required and press
the ‘Submit’ button
OR
14
2. With the unit powered off set the DIPSwitches of the SETTINGS on the
rear panel ON for the appropriate country specification (see Table 2-1,
“Country” on page 10).
3. Ensure that DIPSwitch 8 is also set ON and then power up the unit.
During the power up cycle the new country code should be reflected in
the top row of LEDs, on the front panel.
4. Now return the DIPSwitches to their default condition – switches 1,2
& 7 ON, with switches 3 & 4 also ON if you wish to use automatic call
handling. The unit should now be ready to make & receive calls.
Using the DHY-04 with Internal Telephone Exchanges
The DHY-04 can be configured to operate with internal exchanges, such
as the Avaya exchange - contact technical.support@sonifex.co.uk with
details of the exchange and we should be able to program the unit to
those particular settings, using the User Set country codes. Typically, most
modern exchanges connect to the outside world via digital lines - in this
case there is no network echo and switch 7 should be turned OFF.
Receiving a Call
With the equipment connected as in Figure 3-1 calls may be received and
detected by the ringer in the telephone handset. To receive the call, lift
the handset and establish contact with the caller. The call may be diverted
to the telephone hybrid by pressing either the front panel mounted line
connect button, by activating the remote port or via the serial or Ethernet
(webpage) ports.
Note: The DHY-04 units have an integrated divert relay that will
automatically disconnect the handset when the unit handles the calls.
Incoming calls can be answered manually from the line connect button, or
the remote line connect switch, or automatically by enabling the integrated
ringing detector (settings SW4 ON), or externally via the serial or Ethernet
ports. Ringing tone illuminates the line connect button. The line connect
button lamp is off in the non-connected mode and illuminated in the
connected mode.
Connecting the DHY-04 TBU
3
It is recommended that the auto-disconnect feature be used when the
ringing detector is enabled.
button will cause it to flash twice quickly. If the attempt to connect is via
the serial port then the DHY-04 returns an ERR:08 error message.
Note: The remote lamp tally mimics the front panel line connect button
lamp, i.e. it flashes when ringing and is on when the line is held.
Using Speed Dial Buttons
There are also 4 Speed Dial buttons on the front panel that can make
calls to 7 numbers setup via the webserver. When dialling, the unit shows
the dialling by a rotating illumination pattern on these buttons. Speed
Dial 1-4 are accessed by simple press on buttons 1-4, Speed Dial 5-7 and
last number redial are accessed by pressing and holding buttons 1-4
respectively.
The hybrid unit now behaves as a 4-wire to 2-wire converter with signal
inputs at the mic/line input connector and telephone signal output at the
output connector.
The call may be cleared by re-pressing the line connect button, or by means
of the remote divert switch, or via the serial or Ethernet ports. The call can
also be cleared automatically by enabling the auto-disconnect feature.
Call Established
Integrated Ringing Detector – Auto Answer
Ringing detectors can be used when you need to answer a call
automatically, for instance: If a journalist files a report to a recorder over a
telephone line, the call can be picked up after a set number of rings by the
ringing detector. The DHY-04 has a built in ring detector that is enabled by
setting SW4 on the rear panel.
Level Setting
The DHY-04 hybrid operation is optimised for signals around 0dB. The front
panel gain switches can adjust the signal levels for both caller and sender.
The default position for these switches is receive gain (upper) fully counterclockwise (6dB) and the transmit gain (lower) to be in the middle (0dB). Set
the lower switch so that the bargraph normally shows 0dB (second yellow
LED) with occasional peak signal levels illuminating showing +6db (first red
LED). If your mixing desk or source audio is only sent at consumer level then
J1 should be fitted on the PCB (See page 5 for details of this)
Making a Call
To initiate a call, lift the handset and dial the required telephone number.
When the call has been established, press the line connect button and the
call will be handed over to the telephone hybrid unit. To clear the line at the
end of the call, press the line connect button. The line connect button lamp
is off in the non-connected mode and illuminated in the connected mode.
The DHY-04 is also capable of making outgoing calls via DTMF dialling by
using the serial or Ethernet ports.
DTMF Detection
The caller can use this feature in conjunction with auto answer to force
external actions from the DHY-04. Once again in the case of a journalist
ringing in a report, they can press a key on the telephone keypad to switch
on an external recorder. The key used is set by the value in the webserver
(Configuration - Remote page 26). The presence of the DTMF tones in the
incoming signal for the chosen key will activate the output on the remote
connector.
If the line is not connected to a valid telephone system (determined by no
line voltage present) then trying to connect is invalid. Pressing the line hold
Integrated Disconnect Detector – Auto Disconnect
The DHY-04 can detect when a call has been dropped by the caller and
can release the line. There are a variety of ways that the central exchange
With both auto-answer and auto-disconnect in use, call handling can be
completely automatic in operation (settings SW3 & SW4 ON).
15
3
Connecting the DHY-04 TBU
can signal this to remote equipment and the DHY-04 supports the 3 most
common methods:
• Momentarily reversing the polarity of the signal (line reversal);
• Momentarily shorting the tip & ring (K-break)
• Issuing a tone to the line (tone detect).
The method chosen is initially determined by the country code selected,
but this can be overridden by using the webserver.
Conference Calls
The DHY-04 has the ability to conference 2 calls on separate DHY-04 units
together so that you need only to use 1 telco module on the mixer. These
units are linked by a CAT5 cable (wired as shown below) via the RJ45
connectors on the rear of the units. The conference calls record feature is
unavailable on the DHY-04.
Note: This is not a standard CAT5, or CAT5 crossover, cable.
Establishing calls on both units will allow each caller to hear a mix of the
clean-feed station output and the other caller. The feed to the mixer will
contain a mix of both received calls.
Figure 3-2: Conference Port Cable Connections.
16
The conference port cable simple cross-connects the Conference Input
(Phase and Non-Phase) signals to the Conference Output (Phase and NonPhase) signals respectively. It is available as an accessory, DHY-04CONF.
Using the Conference Port as a Record Output
If you are not using the conference port, it can be used to provide a
balanced audio output from the Conference Output Phase and Non-Phase
pins. This output will contain just the caller signal unless the webserver
option is selected (Configuration-Misc, page 27), which will create a mix
of caller and sender on the record output.
Using the Conference Port to Share a Stereo Digital Audio
Connection Between Two DHY-04 Units
The DHY-04, when connected to a digital input, has the ability to receive
a stereo signal. Normally just the left channel is used for the hybrid, but
the unit can be set to use the conference port to feed the right channels
to another hybrid, i.e. you can use a stereo signal to feed two hybrids
automatically.
Set the first DHY-04 unit to Digital Master Conference mode in the
webserver (Configuration-Misc, page 27) and use a crossover wired
connection to another DHY-04 which is set to Digital Slave Conference
mode (Configuration-Misc, page 27). Now the first unit provides a
telco connection via the left channels and the slave unit provides a telco
connection via the right channels.
Hybrid Technical Description
4
Hybrid Technical Description
The hybrid has to be very flexible to maintain its operation for the many
different countries’ telephony systems. There are 3 main parts to consider:
- the electrical interface; the impedance presented by the central exchange;
and the actual echo cancellation techniques and algorithms. The country
code presets will use a theoretical optimum set of values for the various
internal parameters of the unit. However in practice in may be necessary to
tune some of the parameters to achieve the best possible results.
Electrical Interface
The telephone system is essentially similar from country to country, but
there are small yet significant changes around the globe: e.g. max signal
levels, line current limits, ringing conditions etc. These values are preset
by the country code selection and can be adjusted via the serial port parameters.
Impedance Matching
The line to the central exchange will present certain impedance to the
hybrid, which will mean that the echo response to any signal will be modified according to the frequency and level of that signal. By impedance
matching the signal we are able to predict, and therefore subtract, a simple
estimation of the echoed signal. The AC impedance and DC impedance
parameters can also be both set via the serial port parameters.
Echo Cancellation
The echo part of the returned signal can be expressed in terms of delayed
sent signal.
The hybrid coefficients are a measure of the amount of signal that is
expected to be echoed from each delay slot (TAP). There are 2 echo
cancella-tion routines running on this unit. The first is a simple 8 TAP unit
4
running in the telephone interface ICs. It allows the data presented to the
DSP to be easily filtered into a signal with caller input and a signal with just
sent signal echo. The second filter is a variable length TAP with dynamic
adapta-tion running on the on-board 24bit DSP. The length of this TAP is
dependent of the expected delay in any echoes from the central exchange.
The default length is 24ms, but the unit is capable of calculating delays up
to 250ms.
The adaptation routines constantly adjust the internal DSP coefficients to
achieve the best echo cancellation. However the dynamic performance
of this algorithm (i.e. the speed that the echo cancellation is optimised) is
inversely dependant on the maximum delay (number of TAPs) allowed, so
increasing the delay will result in a slightly poorer dynamic performance.
To ensure the best performance after a power on we recommend saving
the cancellation coefficients following a successful call. These coefficients
will be loaded during the power up cycle and will improve the ‘settling’ time
for the echo cancellation algorithm.
Updating Firmware
The preferable method of communicating with the DHY-04 is to use the
Webserver embedded within the DHY-04 Firmware.
The DHY-04 operating software is stored in flash memory and can be
overwritten as new code is published. The flash memory is partitioned into
boot code, firmware, and saved parameters. Only the firmware partitions
are erased so that even in the unlikely occurrence of a power fail during the
flash update, the system can still be recovered. If no Firmware file is found,
the unit will automatically start the Bootstrap code that contains a minimal
webserver allowing the unit to have new code uploaded.
If a firmware file is corrupted, but still seen by the system as valid code
then the unit will, most likely, not be able to connect to the integrated
17
4
Hybrid Technical Description
webserver. In this case you should force a bootstrap mode by powering
up or resetting the unit whilst holding down the Line Hold button for 8
seconds. The LEDs show an alternating 2on-2off pattern that switches to a
4on-4off pattern after 8 seconds. Now release the button and connect to
the bootstrap webserver either by discovering the unit with the discovery
app or by powering up with DIPSwitch 6 set to ON, when the unit will be
found at a fixed static IP address of 192.168.0.100.
Select the firmware file to be uploaded – a link to our website is shown to
fetch the latest version of code – and then press update. The DHY-04 will
reboot when the file transfer is complete.
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Serial Port Control
5 Serial Port Control
DHY-04 Serial Connection
Default connection is 19200, e, 8, 1 and using XON/XOFF handshaking.
The serial port has reduced capability compared to the DHY-03 as the setup
and firmware functions have been removed and are implemented by an
embedded webserver.
SCI Software
Sonifex provide free of charge software, SCI, to allow you to manage
connection and control of all aspects of the serial port interface. Go to
www.sonifex.co.uk/sci for the latest version.
Serial Interface Commands & Responses
ANS:
BSV:
- Answer Call
- BootStrap version
- ACK: or NAK:
- BOOT:x.xx
CLR:
DTS:nnnn
MAC:
- Clear Call
- Send DTMF string nnnn
- MAC Request
NET:
- Network Request
SER:
TEL:nnnnn
-Serial Number Request
- Make Call
UID:
VER:
- Unit ID request
- version request
- ACK: or NAK:
-ACK: or ERR:
- returns current MAC
address
- returns active
Network Parameters
- SER:nnnnnnn
- ACK: or NAK: where
nnnnn is tel number
string or
#n for speed dial
numbers (1-7)
or #L for redial last
number
- UID:DHY-04G
- VER:x.xx.xxx.xxx
SRQ:
STA:01
STA:02
STA:03
STA:04
STA:05
STA:06
5
- Status Request
- See Below
- Initialisation
- On Hook
- Ringing
- Off Hook - connected to line
- Dialling
- Firmware Update in progress
Error Messages
ERR:01
ERR:02
ERR:04
ERR:05
ERR:08
ERR:09
ERR:11
- Command Not Found
- Invalid Command
- Parameter out of range
- Write Parameter is Read Only
- Line Volts Missing
- Command not allowed when Call is Active
- Command not allowed when Call is Inactive
The telephone interface parameters are accessible from the webserver for
changing the settings for use on non-standard telephone systems or PABXs
and would not normally need to be changed on standard systems. They are
shown in Appendix A.
Many of these parameters are critical to the correct operation of the DHY04. Changing them may impact on the correct working of the unit or cause
the unit to operate in a way that is outside the telecom approval regimes.
Our advice is that the telephone interface parameters should not be
changed without detailed technical knowledge or input from Sonifex. Both
country code and disconnect type tables have reserved entries for future
additions - if you have special requirements for either of these parameters
please contact us with details and we can assess the demand and then add
to the standard list as required.
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6
Webserver
6 Webserver & Network Discovery
In addition to any physical controls the DHY-04 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 Ethernet port should be connected to a network and then the unit will
be accessible to all computers on that network - including smartphones/
tablets if the network is WiFi compatible.
Connecting to the Device
To connect to the device you will need to know either the unit’s IP
address or its Bonjour Name. To connect to the device by IP address (eg
192.168.0.100) connect via a browser by entering http://192.168.0.100 in
the address bar of the browser.
To connect via Bonjour Name in a Bonjour enabled device enter the name
in the browser address bar. The default name is the device ID ‘DHY-04’, a
hyphen character ‘-‘ , followed by the serial number without leading zeroes
‘1234’ and then followed by ‘.local./’ to indicate the local domain – so DHY04-1234.local./
The hostname can be changed to make it more memorable or descriptive of
an implementation, however, conflicting names should be avoided.
First Time Usage
The DHY-04 network interface employs Zeroconf networking, meaning that
it supports DHCP, AutoIP and MDNS-SD using Bonjour. When you first get
the unit it is set to use AutoIP and DHCP. If you have a DHCP on your server
simply connect the device to your network and either run the discovery
application or ask your network administrator for the assigned IP address. If
you have a Bonjour enabled device enter the default name in the browser
address bar as above. 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.
20
If your system network is unsuitable or doesn’t have a DHCP server then
the unit will use AutoIP which will poll addresses in the reserved range of
169.254.x.x until it finds an unused address. Unless your network uses this
mechanism for IP address assignment, this will most likely be used when
connecting a PC with a network cable directly between the unit and the PC.
Ensure that the PC has dynamic addressing enabled in its network options
and the AutoIP system will ensure that each device has a unique ID in the
169.254.x.x range. Now using the discovery app, find the IP address or if the
PC is Bonjour enabled, type in the device name to the browser as above.
Finally if you are still having issues connecting – set DIPSwitch 6 to ON (up)
and power cycle the unit. This will force the device to use a static IP address
of 192.168.0.100
Once connection is established in a browser go to the Network tab and set
the device to the settings appropriate for your network.
MDNS-SD and Bonjour
Bonjour is an application created by Apple and is integral to Apple operating
systems and the iTunes app. Bonjour for Windows is available as a plug-in
for MS Internet Explorer®. Go to our website or other download stores and
download the appropriate version for your operating system.
Sonifex Service Discovery App
This is a free download for Windows from our website- www.sonifex.co.uk/
technical/software/index.shtml#sfxsrvdisc
It looks for classes of devices on the network and allows you to connect
via a browser to them where appropriate. If Bonjour is installed select the
Bonjour tab and then the Sonifex Web Server Service to show all devices.
Select the device you wish to connect to, by type and serial number, and
then launch to connect via a browser. If Bonjour is unavailable go to the
Legacy Discovery tab, press the Refresh button, and if the device has a
webserver you can select and launch the device.
Webserver
Figure 6-1: Bonjour Service Discovery Page.
6
Figure 6-2: Legacy Service Discovery Page.
21
6
Webserver
Whilst calls are in progress you can also use this page to
send DTMF audio data to the caller.
The Home Page can be protected by setting a password for
Level 1 Access. If this is set and the appropriate password
has not been submitted, then the default becomes the
Device Info page.
Status
Shows the status of the telephone line.
Line
Control to take control of the line in response to incoming
ringing or to drop currently connected call.
The DTMF Send String is defined here and verified by
pressing the return key. Then, when the line is connected
it can sent by the button or by the remote input. A serial
command DTS:abcd will also send the DTMF string “abcd”
directly.
Dial
Controls to make outgoing calls to previously connected
numbers, to a selection of 7 Speed Dials or to a directly
entered number - type number in the box plus the return
key to validate it. Note a ‘w’ character in the dialstring will
cause the dialling process to wait for 1 second and then
continue with the remaining characters in the string.
Figure 6-3: Home Page – for basic call control and setting preset calls.
Home Page
The Home Page shows the status of the line, the line hold button and the various
dialling options. Use this screen to change the 7 Speed Dial call numbers.
The Home page is loaded on the first connection to the unit, chosen from the
Home Menu dropdown and after uploading new firmware from the Update screen.
22
To update the Speed Dials enter the number, and name if
required, then press the update button to save the new
information
The number entries should be preceded with the
appropriate country codes to support international calling
Webserver
6
Dialler Page
The Dialler is selected from a drop down of the
Home Menu and allows you to remotely dial
out from a browser – including smartphones/
tablets that are connected by WiFi via an
access point to the DHY-04.
This page shows the easy dialler screen and
call state of the connected DHY-04.
Call State
Shows the status of the telephone line.
Dial
Select Speed Dial (SD) numbers, or the last
called number or manually enter a number
and then press the Dial button to make a call.
Special characters are available via the shift
key and the ‘<’ key is used as a backspace.
The Dial button is also used to answer
incoming calls or drop currently connected
calls.
Figure 6-4: Dialler Page – simple screen for making calls – accessed via Home Menu drop-down.
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6
Webserver
Configuration - Telephone
The unit configuration is shown as 3 pages – selected
from a drop-down in the Config menu. Normally the Show
Full Info box is unchecked and the Country Code and
Disconnect Settings only show the appropriate dropdown selection. The detailed info about the registers and
disconnect parameters are hidden.
Each country code has a Disconnect Set assigned to it,
so changing the country code will alter the disconnect
settings you may have already selected – the rule here is to
select the country code before selecting a disconnect set.
Country Code
Use this option to select the appropriate parameters for
many countries. The specific telephone standards required
for each country are selected, together with suitable
disconnect methods (where known).
There are also a number of special sets for connecting
to PSTN systems and finally a User set where the
individual parameters can be adjusted to suit particular
requirements.
Figure 6-5: Telephone Configuration – selection of telephone interface via Country Code selection.
Disconnect Settings
Use this option to change the disconnect method to
override the default set for the selected country. There
are several methods for recognising disconnect signals including Line Reverse, K-break and tone detection. The
auto-disconnect function is enabled by DIPSwitch 3.
Answer Control
These options allow you to select automatic answering
after a defined number of rings and to enable/disable
various call control methods.
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Webserver
6
The auto-answer function is enabled by DIPSwitch 4.
Buttons
The Copy to User buttons copy the current telephone or
disconnect set to the User Set on the DHY-04 unit where
they can be edited.
The Submit button saves the selection changes to the
DHY-04 and the Reload button retrieves the current set
from the DHY-04 unit, losing any changes made locally.
Configuration - Telephone Details
The detailed parameters are shown by selecting the
‘Show Advanced Info’ check box, which allow you to edit
the complete sets of parameter values.
The detailed parameters can be changed by copying the
nearest suitable settings to the User setup, selecting User
settings in the drop down and then in User mode all the
parameters can be edited directly.
Do not change these parameters without careful
assessment of the impact to the unit and knowledge of
the local regulations.
Figure 6-6: Detailed Telephone Configuration – selection of telephone interface via Country Code selection
with detailed information about the actual parameters being set. This screen is also used to change
individual parameters for User settings.
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6
Webserver
Configuration-Remote
The second Configuration page sets up the User GPI &
GPO pins on the remote port, plus allows the unit to
reflect through to the serial port any received DTMF
characters from the remote caller. The DTMF detect
features will be disabled when sending DTMF strings from
the home page option.
On the remote port there are 2 input and 2 output
connections. In each case the first ports have predefined
functions - effectively mirroring the front panel Line Hold
control.
The second port functions can be defined here. Note
that the factory supplied options are set to offer the
same connectivity as hardwiring of the previous DHY-03
products.
Input Port
Select the functions of the GPI port between the
following options :Mom/Latch Rem Line Hold - When this input is activated
(i.e. connected to ground) the action of the Remote Line
Hold input changes from Momentary to Latching mode.
Figure 6-7: Remote Port Configuration – settings of remote port and DTMF detection – accessed via Config
Menu drop-down.
26
DTMF Start - When this input is activated (i.e. connected
to ground) and the unit is connected to a line, then the
currently set DTMF String in the Home Page is sent to the
line. When this option is selected then the action of the
Remote Line Hold is determined by the checkbox below.
Note that if you choose to send DTMF from the unit then
during that period the DTMF detect circuits are inhibited.
Webserver
Output Port
Select the functions of the GPO port either as a specific info about ring or
call connection or to output the state of the DTMF detection circuit.
Remote Off - remote GPO has no function.
Remote Ring - remote GPO reflects Ring detection.
6
If you select DTMF Detect/Toggle then set a the DTMF Detect String to a
character or string for detection.
Finally the serial port can be made to reflect any DTMF signals directly as
they are selected via a DTD:x (DTMF Tone Detect) where x is the DTMF
signal detected.
Remote Connected - remote GPO is active when the unit is connected.
Remote DTMF Detect String - remote GPO is active once the DTMF String
below has been detected from the caller.
Remote DTMF Toggle String - remote GPO is toggled every time the DTMF
String below has been detected from the caller.
Remote DTMF Follow Hash - remote GPO is active while the DTMF Hash
character is detected from the caller.
Remote DTMF Hash Toggle - remote GPO is toggled every time the DTMF
Hash character is detected from the caller.
Some networks – especially PABXs - can have short, low level DTMF
signalling. The DTMF parameters for Threshold and duration can be set
here to account for this. The Threshold defaults to 108 which is approx.
equivalent to -12dB and can be decreased/increased for lower/higher level
signals. The Duration is the number of tests to be performed, with each
test taking slightly over 25ms, so the default of 2 represents a duration
of around 51msec. A longer duration will allow for a more consistent
result, but requires that the DTMF signal is present for longer. Conversely,
a shorter number of tests could have the propensity to generate false
positives when audio is present
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6
Webserver
Configuration-Misc
The final Configuration page sets up various other options
for the operation of the hybrid.
Config Name
Enter the name used to identify the configuration set
when saved in ‘Updates’.
Description
Enter the name used to identify the device in your studio
e.g. Studio1 Telco Ch2.
Echo Duration
Enter the time used in the echo cancellation algorithms.
This defaults to 24ms which is more than sufficient for
most telephone systems. However the unit is capable of
handling line delays of up to 250ms.
Note that longer delays will affect the speed and accuracy
of the echo cancellation algorithm.
Conference Port Function
Select the function of the RJ45 conference port from the
following :Unused - Conference Port has no function.
Conference - Conference Port allows 2 x DHY-04 units to
share a single Mixer Telco channel.
Figure 6-8: Misc Configuration – extra settings for DHY-04 – accessed via Config Menu drop-down.
Record - Conference Port outputs the caller for recording
purposes.
Record Mix - Conference Port outputs a mix of the caller
& the mixer send signal for recording purposes.
28
Webserver
6
Digital Share Master - Allows 2 x DHY-04 units to share a digital audio
connection by connecting the right hand channel of the digital audio input
and output data to the Conference Port.
Digital Share Slave - Retrieves the incoming audio and presents outgoing
audio to the Conference Port.
Force Analogue Output
The Main Output of the unit will follow the input type unless this option is
selected when the output is always analogue.
Note it is not possible to output digital audio without a digital input being
present.
Save Cancellation Coeffs
To tune the system we recommend pre-loading the cancellation coefficients
to allow the unit to optimise the speed of the echo cancellation. Use this
option to save the current values after a call has been made with good
cancellation.
A call to a telephone that has a muted microphone pick-up whilst still
sending audio from the DHY-04 is ideal for this.
NOTE: If the DHY-04 settings for Country Code or Echo Length are changed
then the coefficients will be cleared.
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6
Webserver
Password Setting
The Password Setting Page allows you to restrict access to
certain pages on the Webserver. Setting Level 1 password
protects access to the Home and Dialler Pages, and if
the level 2 password is not set it will also restrict access
to those pages protected by the level 2 password. Set
the level 2 password to restrict access to all the settings
pages – i.e. Configuration, Password Setting, Network and
Updates. The password requires 5 digits of case-sensitive
alphanumeric characters or should be cleared to remove
the password protection.
The Automatic Log Out Time is between 0 and 30, where
0 is disabled and 1-30 is the inactivity timeout period in
minutes for the Hybrid to automatically log out.
Figure 6-9: Password Setting Page.
30
Webserver
6
Network Settings
The network page allows you to change the method of IP
assignment for the unit and to alter the Hostname used
by Bonjour for automatic connection regardless of the IP
address assigned.
Note: Submitting new network settings can cause the
browser to lose connection. the DHY-04 will attempt
to re-connect to the device and most browsers will
eventually do this. The process is speeded up by
refreshing the page after 15 seconds, but some (notably
Internet Explorer) will not respond to this refresh and will
require a shut-down and restart, or you should wait a few
minutes then refresh the connection.
Bonjour Name
Enter the host name used by Bonjour. The Host name can
be up to 63 alphanumeric characters in length, and can
include hyphens (-). The default name is the Device ID
then ‘-’ then serial number without leading zeroes.
If a conflict occurs on the network this value will be
modified to ensure a unique name.
Figure 6-10: Network Page – settings for network interface.
Static IP Address
Enter the static IP address that you wish to assign to this
unit. This IP address will be used if Dynamic addressing
is disabled. The default static IP address - and the IP
address when DIPSwitch 6 is active during power on - is
192.168.0.100
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6
Webserver
Static Subnet Mask
Enter the subnet mask of the network you wish to
connect to.
The default subnet mask is 255.255.255.0
Gateway IP Address
Enter the gateway IP address of your router.
The default gateway is 192.168.0.1
Dynamic Addressing
Enable dynamic addressing (DHCP or AutoIP) to allow the
unit to acquire it’s IP address automatically from a DHCP
server and/or using AUTOIP. Disable both options to use
the static IP address entered on this page.
To transfer the new network settings to the connected
DHY-04, press the Submit button.
This may require a restart by Internet Explorer and, if the
device is being accessed by a direct IP address, you will
probably have to enter the new IP address in the address
bar.
32
Webserver
6
Device Info Page
The Device Info page is self-explanatory as it shows info
about the device.
Figure 6-11: Device Info Page – shows info about the DHY-04 device.
33
6
Webserver
Update Firmware Page
The Update page allows you to load new versions of
firmware which may be published on the Sonifex Website
from time to time. The firmware update may contain
small changes like adding a PABX to the country code
options, small bug fixes, etc, or may contain major new
features. To find out if there is new firmware for this unit,
check the Sonifex website.
Generally major features would be indicated by a step in
the first firmware version number, whereas small fixes
would be only shown in the ‘decimal places’ or even the
build revision.
The device configuration can be saved or loaded from
the local PC running the browser. All information about
the configuration is saved, but, to allow replication
across multiple machines there a few parameters (e.g. IP
Address and host name) that are specific to the unit and
will not be loaded.
Update Firmware
If an update is available, download the latest version and
save the file to your computer. Browse your computer
to locate, select the file, and press the Update button.
Once the update has started, this page will refresh
automatically.
Figure 6-12: Updates Page – to update the system firmware and load/save configuration files.
34
The file must be named according to the following
convention “DHY-04” followed by any version or other
info then a “.DWN” suffix - e.g “Dhy-04 v2_07 special
release.dwn”.
Webserver
6
Update Config Files
The settings created in the Configuration page can be retrieved from or
saved to your computer.
To Load a Config Set, select a file and press Load Config and the options
from the config file will be loaded onto the DHY-04 unit.
Just press Save Config to create a file named DHY04.ini in the download
directory of the browser. The configuration file is always saved to the
download directory as DHY04.ini, but can be edited, renamed or moved to
a more convenient location directly on your computer. The file is manreadable and editable. For special setups we sometimes provide a config
file to create a special User set to suit customers specific conditions (e.g.
non-standard disconnect tone).
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6
Webserver
Log In
Enter the 5 digit case-sensitive alphanumeric password
to allow access to protected pages. This password should
match either the level 1 or level 2 passwords setup in the
Password Setting Page.
Once a correct password has been entered access to
the appropriate screens will be enabled, until the user
selects the Log Out menu or the unit is inactive for the
Automatic Log Out Time set in the Password Setting Page.
Figure 6-13: Log In Page.
36
Webserver
6
Bootstrap Mode
This mode is entered when the unit cannot find a valid
version of firmware in the flash memory. Alternatively the
bootstrap mode can be forced by holding down the Line
Hold button for an extended duration of approximately
8 seconds whilst powering-up the unit. The meter LEDs
will flash as alternate pairs until the duration has been
achieved, when it will show a set of 4 on/off pattern.
In bootstrap mode the unit can only be used to load new
firmware from the web interface or to clear all settings
back to the factory defaults. The unit will default to DHCP
and AutoIP enabled, in which case use the Sonifex Service
Discovery App or chack with the administrator of the
DHCP server to discover the device IP address.
If DIPSwitch 6 is ON (up) during power up, then the unit
will ignore the dynamic addressing options and will use a
static IP address of 192.168.0.100
Figure 6-14: Bootstrap Page.
Connect to the device on our browser by typing ‘http://’
followed by the IP address in the browser address bar –
eg ‘http://192.168.0.100’. Now you can either press the
factory default button to clear the settings to factory
defaults or upload a file. To do this choose File button
and select the correct download file. Now press the
Update button and the unit will accept the new firmware
and re-program the flash memory with the new code.
The webpage will display an ‘Ok’ message that will
automatically update to the new home page once the
program and reset functions are completed. The new
firmware will use any previously saved settings.
37
7
Technical Specification
7 Technical Specification
Audio Specification Analogue Audio I/O
Input Impedance - Line Mode (Clean Feed):
ϭϬŬɏďĂůĂŶĐĞĚϬĚ
Input Impedance - Conferencing:
ϭϬŬɏďĂůĂŶĐĞĚϬĚ
Input Impedance - Microphone Mode:
ϮŬɏďĂůĂŶĐĞĚ
Input Level Gain Range:
+6dB, 0dB, and -6dB adjusted by 3-position front panel switch, +10dB jumper
Microphone Level Gain Preset:
From 65dB to 35dB
Maximum Input Levels:
Line +26dBu, mic -24dBu
Clean Feed Limiting Input:
-4dBu for CTR21 setting, other values available *
Output Impedance - Line Out:
ϱϬɏďĂůĂŶĐĞĚĨůŽĂƚŝŶŐϬĚƵ
Output Impedance - Conference/Record:
ϱϬɏďĂůĂŶĐĞĚĨůŽĂƚŝŶŐϬĚƵ
Output Level Gain Range:
+6db, 0dB, and -6dB adjusted by 3-position front panel switch
Digital Audio I/O
Input Impedance:
ϭϭϬɏцϮϬйďĂůĂŶĐĞĚ
Output Impedance:
ϭϭϬɏцϮϬйďĂůĂŶĐĞĚ
Sample Frequency Range:
30 - 100kHz (i.e. including 32kHz, 44.1kHz, 48kHz, 64kHz, 88.2kHz & 96kHz)
Signal Level:
2V/7V peak to peak min/max
Analogue Input Level for Full Scale Digits:
+18dBU
Telephone Line
Bandwidth to Telephone Line:
38
250Hz - 4kHz, -3dB ref 1kHz
Technical Specification
Telephone Line Impedance:
ϲϬϬɏ͕ϵϬϬɏƉůƵƐϭϰŽƚŚĞƌĐŽŵƉůĞdžŝŵƉĞĚĂŶĐĞĐŝƌĐƵŝƚƐΎ
Rejection Ratio:
80-88dB on complex waveforms, reference peak level of 0dBFS
Ring Detector Sensitivity:
Off, 1, 2, 3, or 4 rings
7
Power Supply
Power to DHY-04, S & T
Universal 12W power supply: 90 to 250V AC; 47-63Hz; fused 1A
* These values are dependent on the actual country setting selected on the DHY-04
Connections
Mic/Line/AES-EBU Input:
XLR 3 pin female, with push-button mic/line selection
Line/AES-EBU Output:
XLR 3 pin male
Telephone Line:
RJ11 6/4 socket
Telephone Handset/Instrument:
RJ11 6/4 socket
Conferencing or Record Audio:
RJ45 socket
Remotes:
9-way D-type socket
Ethernet:
RJ45 socket
RS232 Serial:
9-way D-type socket
Power:
IEC mains (CEE22)
Accessories Order Code
Description
DHY-04CON
Front Panel Conversion Kit, DHY-04S to DHY-04
DHY-04SCON
Front panel conversion kit, DHY-04 free standing to DHY-04S 19” (48cm) rack-mount front
DHY-04TCON
Front panel conversion kit, DHY-04 or DHY-04S, to DHY-04T 19” (48cm) rack-mount front
DHY-04CONF
Conference Cable to Connect 2 x DHY-04(G) Units
39
7
Technical Specification
Physical Specification
Order Code
Description
Height
Width
Depth*
Total Nett
Weight
Total Gross
Weight
DHY-04 (Raw):
Automatic digital telephone
hybrid, free standing
4.5cm
1.8”
21.8cm
8.6”
17.5cm
6.9”
1.4kg
3lbs
2.2kg
4.8lbs
6cm
2.4”
34cm
13.4”
27cm
10.6”
4.5cm (1U)
1.8” (1U)
48.3cm
(19” rack width)
17.5cm
6.9”
1.45kg
3.2lbs
2.3kg
5lbs
6.8cm
2.7”
58.8cm
23”
27cm
10.6”
4.5cm (1U)
1.8” (1U)
48.3cm
(19” rack width)
17.5cm
6.9”
2.80kg
6.2lbs
4.4kg
9.7lbs
6.8cm
2.7”
58.8cm
23”
27cm
10.6”
DHY-04 (Boxed):
DHY-04S (Raw):
Automatic digital telephone
hybrid, rack mounted
DHY-04S Boxed):
DHY-04T (Raw):
Twin automatic digital telephone
hybrid, rack mounted
DHY-04T (Boxed)
*Depth is measured from the front to the end of the connectors fitted to the back of the unit.
Approvals Information
Sonifex is a BABT approved manufacturing facility with a license to build
telecommunications equipment and all telecom products are compliant
with BS6301, BS7002, BS415 and CTR21. The following product description
is necessary for BABT approval and provides information on the connec-tion
and operating conditions of the units.
Manufacturer
Sonifex Limited, 61 Station Road, Irthlingborough, Northants, NN9 5QE,
United Kingdom
Equipment Type
DHY-04 telephone balance unit.
40
Approval File Reference
SON: TJF 25
Functions
The DHY-04 Telephone Balance Unit is suitable for connection to B.T.
exchange lines with a parallel connected telephone at the handset port.
The hybrid unit is used as a four wire to two wire converter. Incoming calls
received at the handset may be diverted to the hybrid unit and produce
a ‘telephone’ signal at the output of the unit. Signals presented at the
input are transmitted to the telephone line only. The DHY-04 automatically
balances the telephone line.
Technical Specification
7
Specified Systems
The DHY-04 is suitable for connection to any exchange line forming part of a
Public Switched Telephone Network, PSTN, or a Relevant Branch system for
PSTN lines or any extension. This equipment is not suitable as an extension
to a payphone. A definition of Relevant Branch System for PSTN is given in
BS6789: Section 6.1: 1986 Clause 2.9; including the note to that clause.
Facilities
This apparatus has been approved for use as a telephone hybrid unit (four
wire to two wire converter) and for use with a series connected simple
telephone. Any other usage will invalidate the approval of the apparatus
if as a result it then ceases to comply with the standards against which
approval was gained.
Ringer Equivalence Number
The REN=1 marking on the rear of this equipment relates to the
performance of the apparatus when used in combination with other items
of appa-ratus.
Statutory Mark
Approved for connection to telecommunications systems specified in the
instructions for use subject to the conditions set out in them.
The REN indicates the maximum number of items that should be connected
simultaneously to the line. This equipment may be connected with series
apparatus up to REN = 4 maximum.
Accessory Ports
Barriered Ports - The Handset series connection complies with BS6301.
Accessory Ports - Mic/Line Input, Main Output, Conferencing Port, Serial
Port, Ethernet Port & Remotes
Conditions
This apparatus is not designed for use under controlled conditions of
temperature and relative humidity.
Series Connection
When connected into the loop connection between the main apparatus and
the PSTN, this apparatus introduces a voltage drop at a current of 40mA of
0.300V.
The apparatus should not be used in conjunction with other series
connected apparatus such that the aggregate declared voltage drops,
together with that of any relevant wiring at 40mA, exceeds 2.0 volts.
41
8
Appendix 1 - Telephone Registers
Appendix 1 - Telephone Registers
Telephone Interface Register 16
Name
OHS
IIRE
RZ
RT
Function
On Hook
Speed
Transmit &
Receive
Filter type
Ringer
Impedance
Ring Threshold
Value
64 = slow
(Aus-tralia)
16 – IIR
2 = synthetic
1 = high
Table 8-1: Telephone Interface Register 16. (Use sum of required values)
CALZ
MCAL
CALD
Name
RDLY1
RDLY0
RMX
Function
Ring Delay Bits
0 & 1 in 256ms
steps
(add value in
RDLY2 for total)
Ring Assertion
Max Count
Value
0 = 0 ms;
64 = 256ms;
128 = 512ms;
192 = 768ms
0-63 in 2ms units
(0-126 ms)
Table 8-4: Telephone Interface Register 22. (Use sum of required values)
Telephone Interface Register 17
Name
Telephone Interface Register 22 - parameters
31,56,81,106,131,156,181
OPE
Telephone Interface Register 23 - parameters
32,57,82,107,132,157,182
Function
ADC
Calibration
Manual ADC
Calibra-tion
Auto ADC
Calibra-tion
Overload
Protect
Name
RDLY2
MRTO
RCC
Function
Ring Delay Bit 2
Ring Timeout
Ring
Value
128 = Clear
Data
64 = Initiate
Calibra-tion
32 = Disable
8 = Enable
Confirmation Count Time
See Table
See Table
Value
128 = 1024ms
Table 8-2: Telephone Interface Register 17. (Use sum of required values)
Table 8-5: Telephone Interface Register 23. (Use sum of required values).
Telephone Interface Register 18
Name
RFWE (RNGV=0)
RFWE (RNGV=1)
Function
Ring Detector Full Wave
Rectifier
Ring Detector One shot/
Envelope
Value
2=Full Wave
2=One Shot
Table 8-3: Telephone Interface Register 18. (Use sum of required values)
RTO Value in Reg
23
Timeout in ms
80
128 256 384 512 640 768 896
RTO Value in Reg
23
64
Timeout in ms
0
8
72
16
80
24
88
32
96
40
48
56
104 112 120
1024 1152 1280 1408 1536 1664 1792 1920
Table 8-6: Telephone Interface Register 23 - RTO Values.
RCC Value in Reg
23
Timeout in ms
100 150 200 256 384 512 640 1024
0
1
2
3
Table 8-7: Telephone Interface Register 23 – RCC Values.
42
4
5
6
7
Appendix 1 - Telephone Registers
AC Impedance Setting
Telephone Interface Register 24 - parameters
33,58,83,108,133,158,183
Name
RNGV
RAS
Function
Ring Validation
Ring Assertion Time
Value
128 = Enabled
0-63 in 2ms units (0-126 ms)
ACIM Value
Simple Resistance
0
600 O
1
900 O
Series Complex Impedance
2
270 O
750 O || 150 nF
Table 8-8: Telephone Interface Register 24. (Use sum of required values)
2
275 O
780 O || 150 nF
Telephone Interface Register 26 - parameters
34,59,84,109,134,159,184
3
220 O
820 O || 120 nF
3
220 O
820 O || 115 nF
Name
DCV
MINI
DCR
4
370 O
620 O || 310 nF
Function
Tip Ring DC
Voltage
Minimum
Current
Operational Limiting
Loop Current
DC
Impedance
(50/800 O)
5
320 O
1050 O || 230 nF
6
370 O
820 O || 110 nF
0=10mA;
16=12mA;
32=14mA;
48=16mA
1=800 O
7
275 O
780 O || 115 nF
8
120 O
820 O || 110 nF
9
350 O
1000 O || 210 nF
10
200 O
680 O || 100 nF
11
600 O
600 O
Value
0=3.1V;
64=3.2V;
128=3.35V;
192=3.5V
ILIM
2=Enabled
(60mA)
Table 8-9: Telephone Interface Register 26. (Use sum of required values)
Telephone Interface Register 30 - parameters
35,60,85,110,135,160,185
Name
Function
Value
2.16 μF
12
900 O
900 O
1 μF
13
900 O
900 O
2.16 μF
1 μF
ACIM
14
600 O
Enhanced Full Scale
(x2)
AC Impedance
15
Global Compromise Impedance Setting
16 = 2 x Full Scale
Tx/Rx
See Table 4-12
FULL2
8
Table 8-11: Telephone Interface Register 30 - AC Impedance settings.
Table 8-10: Telephone Interface Register 30. (Use sum of required values)
43
8
Appendix 1 - Telephone Registers
Telephone Interface Register 31 - parameters
36,61,86,111,136,161,186
Name
FULL
FOH
OHS2
FILT
LVFD
Function
Full Scale
Mode
Fast Off
Hook
Speed2
On Hook
-3dBFS
Filter Pole
Select
Line
Voltage
Force
Disable
Value
128=Full
0=512ms; 96=8ms
Scale Mode 32=128ms
64=64ms;
2= @ 200Hz
0=<0.5ms; 0= @ 5Hz;
8=3ms
1=Disable auto switch of Line Voltage to 0v at
Low Voltages
Table 8-12: Telephone Interface Register 31. (Use sum of required values)
Telephone Interface Register 59 - parameters
37,62,87,112,137,162,187
Name
SQ1 & SQ0
Function
Spark Quenching Receive Gain 1
RG1
Guarded Clear
Enable
Value
0 = Normal;
80=Australian
Spec.
2=Telephone
Inter-face Draws
2.5mA
4=Add 1dB Gain
to Hybrid
GCE
Table 8-13: Telephone Interface Register 59. (Use sum of required values)
44
Notes
Notes
Notes
www.sonifex.co.uk
t:+44 (0)1933 650 700
f:+44 (0)1933 650 726
sales@sonifex.co.uk