Miranda DENSITE series Instruction Manual

DENSITÉ series
DCO-1741 / DCO-1781
2/4 AES Changeover
Guide to Installation and Operation
M879-9900-100
16 Sep 2008
Miranda Technologies Inc.
3499 Douglas-B.-Floreani
St-Laurent, Québec, Canada H4S 1Y6
Tel. [phone]
Fax. [phone]
www.miranda.com
© 2008 Miranda Technologies Inc

GUIDE TO INSTALLATION AND OPERATION
2 | DCO-1741/1781
Safety Compliance Information
Safety Compliance
This equipment complies with:
- CSA C22.2 No. 60950-1-03 / Safety of Information Technology Equipment, Including Electrical Business Equipment.
- UL 60950-1 (1st Edition) / Safety of Information Technology Equipment, Including Electrical Business Equipment.
- IEC 60950-1 (1st Edition) / Safety of Information Technology Equipment, Including Electrical Business Equipment.
CAUTION
These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock, do not
perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Refer all
servicing to qualified service personnel. Servicing should be done in a static-free environment.
Electromagnetic Compatibility
- This equipment has been tested for verification of compliance with FCC Part 15, Subpart B, class A requirements for
Digital Devices.
- This equipment complies with the requirements of:
EN 55022 Class A, Electromagnetic Emissions,
EN 61000-3-2 & -3-3, Disturbance in Supply Systems
EN 61000-4-2, -3, -4, -5, -6, -8 & -11 Electromagnetic Immunity
How to contact us:
For technical assistance, please contact the Miranda Technical support centre nearest you:
Americas
Telephone:
[phone]
e-mail:
[email protected]
Asia
Telephone:
[phone]
e-mail:
[email protected]
Europe, Middle East, Africa, UK
Telephone:
[phone]
e-mail:
[email protected]
China
Telephone:
[phone]
e-mail:
[e-mail]
France (only)
Telephone:
[phone]
e-mail:
[email protected]
Visit our web site at www.miranda.com

GUIDE TO INSTALLATION AND OPERATION
DCO-1741/1781 | 3
Table of Contents
1DCO-1741/DCO-1781 2/4 AES Changeover..............................................................................5
1.1 Introduction ......................................................................................................................................... 5
1.2 Features .............................................................................................................................................. 5
1.3 Applications......................................................................................................................................... 6
1.4 Block Diagram..................................................................................................................................... 8
1.5 Front Card-edge Interface................................................................................................................... 8
2Installation ..................................................................................................................................9
2.1 Unpacking ........................................................................................................................................... 9
2.2 Installation in the Densité frame.......................................................................................................... 9
2.3 Rear Panels ........................................................................................................................................ 9
2.4 Connections ........................................................................................................................................ 9
2.5 Using the GPI interface..................................................................................................................... 11
3Operation ..................................................................................................................................12
3.1 Control options.................................................................................................................................. 12
3.2 Card-Edge Status LED...................................................................................................................... 12
3.3 Local control using the Densité frame control panel......................................................................... 13
3.3.1 Overview .............................................................................................................................. 13
3.3.2 Menu for local control........................................................................................................... 13
3.4 Remote control using iControl........................................................................................................... 14
3.4.1 The iControl graphic interface window................................................................................. 14
3.4.2 The Switch panel.................................................................................................................. 16
3.4.3 The Alarms panel................................................................................................................. 19
3.4.4 The Reference panel ........................................................................................................... 27
3.4.5 The Status panel.................................................................................................................. 28
3.4.6 The Test Signals panel ........................................................................................................ 28
3.4.7 The C-Link panel.................................................................................................................. 29
3.4.8 The RALM panel .................................................................................................................. 30
3.4.9 The Rear Type panel ........................................................................................................... 31
3.4.10 The Factory / Presets panel................................................................................................. 32
3.4.11 The Options panel................................................................................................................ 35
3.4.12 The Info panel ...................................................................................................................... 36
3.4.13 The Alarm Config panel ....................................................................................................... 37
4Specifications...........................................................................................................................40
ANNEX – Local Control Panel User Interface..............................................................................42

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4 | DCO-1741/1781

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DCO-1741/1781 | 5
1 DCO-1741/DCO-1781 2/4 AES Changeover
1.1 Introduction
The DCO-1741/1781 is a 2/4 AES changeover. The switch is performed electronically by an internal router.
In the event of a power failure, the signal is protected by the relays fitted on the rear module, and this
maintains the integrity of the selected signal at the output. The DCO-17n1* card allows switching as a regular
router, or alternatively the module can perform an audio silent switch between sources using the silent switch
option (software option).
* In this manual, the terminology DCO-17n1 refers to both the DC0-1741 and the DCO-1781. Any text that
applies to only one of them will refer to that product specifically
Input selection can be performed manually or automatically. In automatic mode, the card will perform input
selection based on internal signal analysis with alarm parameters, and the status of the inputs. In manual
mode, channel selection can be undertaken from the Densité Controller, the iControl software, or simply by
using a GPI. A GPI can be connected to an automation system or another device to control input selection.
The GPI outputs give status of the selected source, and this can be used to trigger Tallies.
The module provides audio level metering so that an operator can remotely and effectively monitor the signal
path using Miranda’s iControl facility monitoring and control system.
Finally, the DCO-17n1 cards can work in conjunction with the HCO-1821 (HD/SD/ASI changeover). In
multiple card operation, the DCO-17n1 can operate in “audio follow video” mode where the video and audio
changeovers are seen as a unique 2x1 switching system
1.2 Features
•DCO-1741 has 2 AES on each input
•DCO-1781 has 4 AES on each input
•Electronic switching with relay backup (on rear module)
•Automatic mode using internal signal analysis with alarm parameters
•Manual change over by local frame controller, iControl, iControl Solo, GPI or RCP-100
•Alarm reporting to iControl facility monitoring and control system
•GPI in & out (IN 1, IN2, AUTO, BYPASS)
•Optional silent switch function
•Frame reference input
•Monitoring Switching Bridge (MSB) compatible
•Audio level meter streaming
•Can work with the HCO-1821 video changeover

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6 | DCO-1741/1781
1.3 Applications
Application 1a: Master Control
In this application, the DCO-17n1 is used upstream of the master control switcher. It is switching between the
main audio feed and an audio apology slide. This configuration has been seen several times, particularly in
Europe (France 5…)
Apology
Slide
DCO-17x1
Master
Control
Switcher
HD-SDI
Audio
Router
Video
Router
4 AES
4 AES
4 AES
HCO-1821
HD-SDI
Backup Path (2nd Master Control or Bypass chain)
HD-SDI
ON
AIR
Application 1b: Master Control (AC3 encode)
In this variant, the DCO-17n1 is used to switch between main and backup audio to feed the station output
AC3 encoder.
Apology
Slide
DCO-17x1
Master
Control
Switcher
HD-SDI
Audio
Router
Video
Router
4 AES
4 AES
4 AES
HCO-1821
HD-SDI
Video Backup
ON
AIR
DCO-17x1
Audio Backup
4 AES
MPEG
Encoder
AC3
Encoder
Demux

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DCO-1741/1781 | 7
Application 2a: Incoming feeds
Some IRDs work with discrete audio. The DCO-17n1 is used to switch between the main and backup audio
feeds. The resulting audio is then muxed with the main video, before feeding the station router.
DCO-17x1
HD/SD
4 AES
Embedder
HD-SDI
Main IRD
4 AES
HCO-1821
HD-SDI
Backup IRD
HD-SDI
4 AES HD-SDI
4 AES
With embedded audio
Main
Station
Router
-PCM
-Dolby E/AC3
Application 2b: Incoming feeds (Dolby E decode)
In this variant, the DCO-17n1 is used to switch between main and backup audio to feed the station input
Dolby E decoder.
DCO-17x1
HD-SDI
Main IRD
4 AES
HCO-1821
HD-SDI
Backup IRD
HD-SDI
4 AES HD-SDI
4 AES
With embedded audio
Main
Station
Router
HD/SD
4 AES
Embedder
Dolby E
Decoder
Video
Delay
Application 3: Audio only
Radio stations can use this card in an audio only environment with the sale functions.

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8 | DCO-1741/1781
1.4 Block Diagram
The following block diagram shows the functionality of the DCO-17n1.
Rear
DCO-1781 Card
PCM CLIP
PGM
1
PGM
2
Silent Switch
Option
NO
NC
Control
SEL-1
SEL-2
+5V,
IN1/IN2,
Bypass
Bypass
NO
NC
Signal
Validity
Signal
Compare
Card to
Card Link
1
2
11SEL
2SEL
GND
DPDT
Latching
Relay
Bypass
AES INPUTS
2/4 AES
GPI Outputs
GPI Inputs
TONE
GENLOCK
MNTR
PGM
4
4
4
4
4
4
Auto
MSB
URS
4
1
4
4
Auto
2
+5V
ALM
ALM
ALM
4x
Term.
On
Off
4x
Term.
On
Off Signal
Validity
4x1
MNTR
Select 4
Quad
2x1
Quad
2x1
4
PGM
Select
ALM
Figure 1-1 Functional block diagram of the DCO-17n1 and its Rear Panel
1.5 Front Card-edge Interface
The front card-edge of the DCO-17n1 incorporates three
elements:
•Status LED (see section 3.2)
•Select Button (see section 3.3)
•C-LINK connector (see section 3.4.7)
Figure 1.2 Front card-edge layout
Select
Status
Status LED
SELECT button
DCO-1781
C-LINK connector
DCO-17n1 Card

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DCO-1741/1781 | 9
2 Installation
2.1 Unpacking
Make sure the following items have been shipped with your DCO-17n1. If any of the following items are
missing, contact your distributor or Miranda Technologies Inc.
•DCO-1741 or DCO-1781 Integrated Receiver and Decoder
•DCO-17n1-75-DRP-R or DCO-17n1-110-DRP-R Rear Panel (see figure 2.1)
2.2 Installation in the Densité frame
The DCO-17n1 and its associated rear connector rear panel must be mounted in a Densité 2 frame. It is not
necessary to switch off the frame’s power when installing or removing the card. See the Densité 2 frame
manual for detailed instructions for installing cards and their associated rear panels.
Extender panels for Densité 2 rear module and card are needed to fit the card in a Densité 3 frame.
2.3 Rear Panels
The DCO-17n1 has multiple inputs and outputs, and making space for all the necessary connectors at the
rear of the frame requires a double-width rear panel.
With the double-width rear panel installed, the DCO-17n1 must be installed in the right-most of the two slots
covered by the panel in order to mate with the panel’s connectors.
If it is placed in the wrong slot, the front panel LED will flash red. Move the card to other slot for correct
operation. No damage will result to the card should this occur.
2.4 Connections
The rear panel connections are as follows:
•PGM 1 & PGM 2 AES Inputs – Signal inputs on a 26-pin connector
•PGM & PVW AES Outputs - Signal outputs on a 26-pin connector
The DCO-17n1-110-DRP-R is AES3 compatible and offers balanced connections for inputs and outputs. An
optional terminal block adaptor exists under the reference Miranda #NSH26M.
The DCO-17n1-75-DRP-R is AES3-id compatible and offers unbalanced connections for inputs and outputs.
An optional break-out cable adaptor exists under the reference Miranda #BOC-DA26-8BNC-1.

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10 | DCO-1741/1781
Figure 2.1 DCO-17n1 Rear Panels
GPI IN and GPI OUT connectors
The rear panel of the DCO-17n1 includes a GPI interface that allows control of the switch process.
When constructing and using an external GPI box, be aware of the following:
1. The DCO-17n1 card monitors the external power supply voltage on the GPI input. If the voltage is less
than 4V (per relay datasheet), an alarm will be raised.
2. When a GPI INPUT is triggered while the card is operating in auto mode, the card changes to manual
mode and switches to the input selected by the GPI.
3. DO NOT TRIGGER BOTH GPI INPUTS AT THE SAME TIME OR ALLOW THE TRIGGER PULSES TO
OVERLAP, AS DAMAGE TO THE RELAY MAY RESULT.
4. A GPI trigger pulse should have a duration of at least 40 ms.
Figure 2.2 GPI trigger pulse timing
GPI IN 1 Min pulse width=40 ms
GPI IN 2
Min pulse width=40 ms