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DAP-781i
Guide to Installation and Operation
M767-9900-102
8-Channel Digital
Audio Processor
with Dolby E
option
Copyright 2007 Miranda Technologies Inc.
Specifications may be subject to change
Printed in Canada
April 2007
DAP
-
781i
Miranda
Technologies Inc.
3499 Douglas-B.-Floreani
St-Laurent, Québec, Canada H4S 1Y6
Tel. 514-333-1772
Fax. 514-333-9828
www.miranda.com
imaging Series
GUIDE TO INSTALLATION AND OPERATION
DAP-781i
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 (1
st
Edition) / Safety of Information Technology Equipment, Including Electrical Business Equipment.
- IEC 60950-1 (1
st
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:
+1-800-224-7882
e-mail:
Asia
Telephone:
+81-3-5730-2987
e-mail:
Europe, Middle East,
Africa, UK
Telephone:
+44 (0) 1491 820222
e-mail:
France (only)
Telephone:
+33 (0) 1 55 86 87 88
e-mail:
Visit our web site at www.miranda.com
GUIDE TO INSTALLATION AND OPERATION
DAP-781i
Table of Contents
1
General .................................................................................................................................................1
1.1 Introduction..................................................................................................................................... 1
1.2 Features ......................................................................................................................................... 1
1.3 Block Diagram ................................................................................................................................ 2
2 Installation............................................................................................................................................3
2.1 Unpacking ...................................................................................................................................... 3
2.2 Mechanical installation ................................................................................................................... 3
2.2.1 imaging Quartet 2 series frames ............................................................................................. 3
2.2.2 Symphonie Housing Frame..................................................................................................... 4
2.3 Rear panel label ............................................................................................................................. 6
2.3.1 Quartet frame .......................................................................................................................... 6
2.3.2 Symphonie Frame ................................................................................................................... 6
2.4 Electrical installation ....................................................................................................................... 7
2.4.1 AES3 110 Ω rear panel ........................................................................................................... 7
2.4.2 AES3-id 75 Ω rear panel ......................................................................................................... 9
2.5 Applications .................................................................................................................................. 10
2.5.1 Synchronization..................................................................................................................... 10
2.5.2 Remote analog controlled tracking delay............................................................................... 11
2.5.3 GPI Outputs........................................................................................................................... 11
3 Operation............................................................................................................................................12
3.1 DAP-781i user interface ............................................................................................................... 12
3.2 Configurations and adjustments ................................................................................................... 13
3.2.1 Adjustment ............................................................................................................................ 13
3.2.2 Switch configurations ............................................................................................................ 13
3.3 Control.......................................................................................................................................... 13
3.4 iControl Interface .......................................................................................................................... 14
3.4.1 Audio Processing .................................................................................................................. 16
3.4.2 Audio Output ......................................................................................................................... 21
3.4.3 Audio Type ............................................................................................................................ 24
3.4.4 Dolby Decoder....................................................................................................................... 26
3.4.5 Reference Input..................................................................................................................... 32
3.4.6 Test ....................................................................................................................................... 33
3.4.7 A-BUS ................................................................................................................................... 34
3.4.8 Info ........................................................................................................................................ 36
3.4.9 Factory .................................................................................................................................. 37
3.5 Menu introduction ......................................................................................................................... 38
3.6 Menu organization ........................................................................................................................ 38
4 Technical Specifications...................................................................................................................42
GUIDE TO INSTALLATION AND OPERATION
DAP-781i
Table of Figures
Figure 1 : DAP-781i Functional Block Diagram................................................................................................2
Figure 2 : Installing the DAP-781i and XVP-801i in a Quartet 2 housing frame............................................3
Figure 3 : Rear panel R-AX.................................................................................................................................4
Figure 4 : Rear panel R-A110.............................................................................................................................4
Figure 6 : Example of label installation.............................................................................................................6
Figure 7 : Symphonie rear panel label installation ..........................................................................................6
Figure 8 : Quartet-A110 or Symphonie-R-A110 rear panel..............................................................................7
Figure 9 : AES OUT pin assignment..................................................................................................................7
Figure 10 : AES IN / GPI Pin assignment ..........................................................................................................8
Figure 11 : DELAY / META pin assignment ......................................................................................................8
Figure 12 :
Symphonie-R-AX rear panel...........................................................................................................9
Figure 13 : GPI Pin Assignment.........................................................................................................................9
Figure 14 : Tracking signal...............................................................................................................................11
Figure 15 : Timing chart ...................................................................................................................................11
Figure 16 : DAP-781i user interface................................................................................................................12
Figure 17 : DAP-781i iControl graphic interface window..............................................................................14
Figure 18 : Audio Processing group ..............................................................................................................16
Figure 19 : Audio Processing panel – CH 1-4 sub-tab..................................................................................18
Figure 20 : Audio Processing panel - Fixed Delay sub-tab..........................................................................19
Figure 21 : Audio Processing panel - Config Tab..........................................................................................20
Figure 22 : XVP801i and two DAP-781i - Audio Processing Flow Diagram.................................................21
Figure 23 : Output Mixer Block Diagram.........................................................................................................22
Figure 24 : Audio Output panel - CH1-2 tab....................................................................................................23
Figure 25 : Audio Output panel - Audio Channel Presence of Card System tab.......................................24
Figure 26 : Dolby Decoder panel - Control tab..............................................................................................26
Figure 27 : Dolby Decoder panel – Dolby E tab.............................................................................................28
Figure 28 : Dolby Decoder panel – Dolby Digital tab.....................................................................................29
Figure 29 : Dolby Decoder panel – PCM tab..................................................................................................30
Figure 30 : Dolby Decoder panel – PCM Control tab ....................................................................................31
Figure 31 : Reference input panel ...................................................................................................................32
Figure 32 : Test panel.....................................................................................................................................33
Figure 33 : A-BUS panel.................................................................................................................................35
Figure 34 : Info panel......................................................................................................................................36
Figure 35 : Factory panel................................................................................................................................37
Figure 36 : DAP-781i Menu 1/2........................................................................................................................39
Figure 37 : DAP-781i Menu 2/2........................................................................................................................40
GUIDE TO INSTALLATION AND OPERATION
DAP-781i | 1
1 General
1.1 Introduction
The DAP-781i is a high quality, 24 bit digital audio processor that can process up to 8 discrete channels of audio.
Its I/O consists of 4 AES inputs and 4 AES outputs. The DAP-781i can be used as a stand-alone audio processor
for discrete audio signals or can be combined with a wide range of digital frame synchronizer/proc amps,
upconverters, cross converters, and the XVP-801i Cross / Up / Down converter. When working in conjunction with
a video card, the processed audio channels from the DAP-781i cards are made available to be embedded into the
video signals.
If the DAP-781i is equipped with the Dolby E™ decoder card option, it is possible to select any of the audio
channels coming from the video or the audio card to be decoded into 8 additional audio channels. A ribbon
connector carrying both audio and timing signals links the video cards with the audio card(s). Two audio
processing cards can be combined together to process a total of 16 audio channels.
The audio processors feature two distinct processing blocks: Input and Output. The input processing includes
delay level adjustments and phase correction. Delay components include a fixed delay of up to 2 seconds as well
as a video tracking delay that will automatically track the varying delay introduced by an associated video frame
synchronizer. The output processing block includes mixing, an additional gain/ attenuation stage and full channel
shuffling.
1.2 Features
• 8 Channels of Audio processing
• Discrete Digital Audio Inputs and Outputs
• Works as stand-alone audio processor/delay
• Works in conjunction with wide range of video cards for processing of embedded audio signals
• -96 to +12 dBu of input and output level adjustment
• Fixed and video tracking delay
• Phase reversal
• Full channel shuffling
• 2 Channel mix downs and summing
• Voice over and custom capability
• Internal tone generator
• Locks to video (via video card), AES or word clock reference
• Audio silence detection on all inputs
• Dolby E decoder option (offers 8 additional channels)
GUIDE TO INSTALLATION AND OPERATION
2 | DAP-781i
1.3 Block Diagram
DAP-781i
FPGA
µ Controller
3 PLLs
8Ch
4 Wires
DIR +
SRC
ABUS CONNECTOR
32 Ch
ABUS
EXT-REF
SPI
DIR +
SRC
DIR +
SRC
INPUT
PROCESS
OUTPUT PROCESS
DIR +
SRC
16Ch & METADATA
UART
1-8 / 9-16 SEL
16 x LEVELS
8 x MIXERS
8 x TONE & MUTE
16 Ch
48 x 16 SHUFFLER
16 x
NSD
16 x
DELAY
LEVEL
PHASE
8 Ch & METADATA
BYP.
Dolby
Detect
SEL.
16->2
16
DOLBY E
OPTION
8 Ch
8 Ch
4 x SWAP
8 Ch
16Ch
AES OUT 1
AES OUT 2
AES OUT 3
AES OUT 4
AES IN 1
AES IN 2
AES IN 3
AES IN 4
EXT.REF.
METADATA
(& DOWNMIX AUX OUTPUT)
Figure 1 : DAP-781i Functional Block Diagram
GUIDE TO INSTALLATION AND OPERATION
DAP-781i | 3
2 Installation
2.1 Unpacking
Make sure the following have been shipped with your DAP-781i. If any of the following items are missing, contact
your distributor or Miranda.
• DAP-781i
• DAP-781i rear panel labels::
One for R-AX Symphonie rear panel
One for R-A110 rear panel
2.2 Mechanical installation
The DAP-781i must be mounted within a Quartet 2 or Symphonie housing frame equipped with an R-AX or R-
A110 rear module in order to provide power and signal interfaces to the card.
It is not necessary to switch off the power on these frames when installing or removing the DAP-781i.
2.2.1 imaging Quartet 2 series frames
To install this card into Quartet follow these steps. For a closer look at card installation and removal, refer to the
frame’s technical manual.
1. Remove the frame’s front panel by rotating the thumbscrews counter clockwise. Pull on the handles.
2. Select an available slot. The rear module needs to be in place prior to the DAP-781i installation.
3. Carefully place the DAP-781i between a set of card guides and gently push the card towards the rear of
the frame until the card edge connector is secured to the back plane. The card's edge connector having
96 pins, it may be necessary to push lightly when connecting the two connectors. Pull lightly on the
card, verifying that it does not move.
4. Replace the frame’s front panel. Make sure to rotate the thumbscrews clockwise in order to secure it to
the chassis.
Note: When pairing the DAP-781i 8 Channel Audio Processor with an XVP-801i HD/SD Universal Video
Processor/Cross Converter to provide the XVP with external AES audio inputs and outputs, the ABUS cable
supplied with the DAP-781i card must be used to connect the 2 modules. When using a Quartet 2 housing
frame, only one DAP-781i card may be used. The XVP-801i must be installed in the top slot and the DAP-781i
in the lower slot (figure below) in either side of the frame. Use the ABUS cable supplied with the audio card to
connect the 2 modules.
Figure 2 : Installing the DAP-781i and XVP-801i in a Quartet 2 housing frame
GUIDE TO INSTALLATION AND OPERATION
4 | DAP-781i
2.2.2 Symphonie Housing Frame
It is not necessary to switch off the power when installing or removing a module from/to Symphonie. To install a
module, follow these steps. For a closer look at card installation and removal, refer to the housing frame's Guide
to Installation and Operation.
Rear Module Installation
Before installing, check that the rear panel corresponds to the card to install. If no rear module is present, follow
the procedure below to install it.
In order to maintain the inter-rear module spacing, make sure to remove and replace one rear module at a time.
That is, at all times, there must be at least 15 rear modules installed. To install a module, follow these steps.
1. Locate an empty compartment.
2. Make sure that the rear panel corresponds to the card to install, the Reference switch LK1 is used to
select the (75 Ω) reference source for the imaging module. Selecting LOCAL (LK1 position 2-3) drives
the reference signal, connected to the rear module, to the imaging module. However, sliding LK1 to
position 1-2, connects the imaging module to the Symphonie global reference.
3. Carefully place the rear module between the rear module guides (refer to Figure 2.4) and slowly push
the module towards the front until it rests against the rear panel. It may require a light pressure to
compress the EMI gaskets on.
4. Using a flat edge screwdriver, secure the top and bottom screws to the frame.
Figure 3 : Rear panel R-AX
Figure 4 : Rear panel R-A110
GUIDE TO INSTALLATION AND OPERATION
DAP-781i | 5
Board installation
1. Open the front panel door by pulling on the door handles and gently lowering it.
2. Unscrew the module-retaining bar.
3. Carefully place the module between the module guides and slowly push the module towards the rear of the
frame until the module's edge connector is secured to its rear module. A light pressure to mate the
connectors may be required. Pull lightly on the module verifying that it does not move.
4. Replace the bar.
5. Replace the front panel door.
Note: When pairing the DAP-781i 8 Channel Audio Processor with an XVP-801i HD/SD Universal Video
Processor/Cross Converter to provide the XVP with external AES audio inputs and outputs, the ABUS cable
supplied with the DAP-781i card must be used to connect the modules. In a Symphonie frame, up to two
DAP-781i cards may be used. The XVP-801i must always be installed to the left of the DAP cards (figure 5
below). Use the provided ABUS cable to connect the cards.
Fi
g
ure 5 : Installin
g
the XVP-801i and DAP-781i in a S
y
m
p
honie housin
g
frame
GUIDE TO INSTALLATION AND OPERATION
6 | DAP-781i
2.3 Rear panel label
2.3.1 Quartet frame
Two connector labels have been shipped with your DAP-781i. One label is to be installed on the Quartet frame
rear panel in order to identify the module’s external connectors.
To install the label, follow these steps
1. Locate the rear panel connectors associated with the XVP-801i module. Find the proper label according
to your rear module type.
2. Apply the label to the connectors and press down until it rests onto the BNC connectors shoulder.
Figure 6 : Example of label installation
2.3.2 Symphonie Frame
To install the Symphonie label, follow these steps while referring to Figure 7:
1. On Symphonie’s rear panel, locate the appropriate connectors.
2. Carefully apply the label to the connectors making sure the label’s
text is read from top to bottom.
Figure 7 : Symphonie rear panel label installation
GUIDE TO INSTALLATION AND OPERATION
DAP-781i | 7
2.4 Electrical installation
When connecting the DAP-781i to external equipment, make sure that all digital connections are point-to-point.
Refer to the figure below and to the following descriptions for a complete DAP-781i installation.
This equipment is conform to the CEE 89 / 336 directive and operation is subject to the following two
conditions:
1- This equipment may not cause harmful interference according to EN 50081-1 rules.
2- This equipment must accept any interference received, according to EN 50082-1
rules.
Precaution of use:
Several components included are very static-sensitive. To avoid damaging those components, be
sure to respect the following rules:
1- Before touching any component or any other element of the card make sure to
reduce any static electricity on your person. One way to do this is to touch a surface
connected to ground, or to wear a wrist strap attached to ground.
2- When handling card, hold it by the edges avoiding touching the components.
2.4.1 AES3 110 Ω rear panel
Figure 8 : Quartet-A110 or Symphonie-R-A110 rear panel
AES IN / GPI
26 pin HD female socket AES3 digital audio inputs, GPI inputs & outputs
REF IN
BNC jacks Reference input with passive loop-through
AES OUT
15 pin HD female socket AES3 digital audio outputs
DELAY / META
RJ45-10 socket
METADATA output, DVP-101i tracking delay input
AES OUT (15 pin high density D-SUB socket): AES3 digital audio outputs
AES OUT 3 Low
6
AES OUT 3 High
1 11
GND
AES OUT 4 Low
7
AES OUT 4 High
2 12
GND
N/C
8
N/C
3 13
GND
AES OUT 2 Low
9
AES OUT 2 High
4 14
GND
AES OUT 1 Low
10
AES OUT 1 High
5 15
GND
Figure 9 : AES OUT pin assignment
GUIDE TO INSTALLATION AND OPERATION
8 | DAP-781i
AES IN / GPI (26 pin high density D-SUB socket): AES3 digital audio inputs, GPI inputs & outputs
AES IN1 Low
10
AES IN1 High
1 19
GND
AES IN2 Low
11
AES IN2 High
2 20
GND
AES IN3 Low
12
AES IN3 High
3 21
GND
AES IN4 Low
13
AES IN4 High
4 22
GND
REF. INPUT AES3 Low
14
REF. INPUT AES3 High
5 23
GND
GPI INPUT 1
15
GPI INPUT 2
6 24
GPI OUTPUT 3
GPI INPUT 3
16
GPI INPUT 4
7 25
GPI OUTPUT 4
GPI OUTPUT 1
17
GPI OUTPUT 2
8 26
GND
GND
18
N/C
9
Figure 10 : AES IN / GPI Pin assignment
DELAY / META (RJ45-10 socket): METADATA output, DVP-101i tracking delay input
1
GND
2
N/C
3
Factory reserved (RS232 Tx Output)
4
Factory reserved (RS232 Rx Input)
5
GND
6
DVP-101i tracking delay input (HI)
7
DVP-101i tracking delay input (LO)
8
RS422 METADATA Output (HI)
9
RS422 METADATA Output (LO)
10
N/C
Figure 11 : DELAY / META pin assignment
GUIDE TO INSTALLATION AND OPERATION
DAP-781i | 9
2.4.2 AES3-id 75 Ω rear panel
The AES3-id interface is obtained by a R-AX panel associated with a cable adapter between the 26 pin HD
female socket and the four input BNC jacks. The GPI inputs and outputs are then available on a 9 pin DSUB
female connector.
Figure 12 :
Symphonie-R-AX rear panel
AES IN / GPI
26 pin HD female socket for
Cable adapter
GPI
9 pin DSUB female socket GPI inputs & outputs
AES IN1, 2,3 ,4
BNC jacks AES3-id digital audio inputs
REF IN
BNC jack Reference input
AES OUT1, 2, 3, 4
BNC jacks AES3-id digital audio outputs
DELAY / META
RJ45-10 socket
METADATA output, DVP-101i tracking
delay input
GPI (9 pin D-SUB socket)
GPI INPUT 1
1
6
GPI INPUT 2
GPI INPUT 3
2
7
GPI INPUT 4
GND
3
8
GPI OUTPUT 1
GPI OUTPUT 2
4
9
GPI OUTPUT 3
GPI OUTPUT 4
5
Figure 13 : GPI Pin Assignment
GUIDE TO INSTALLATION AND OPERATION
10 | DAP-781i
2.5 Applications
2.5.1 Synchronization
An external reference signal is required to synchronize the digital outputs.
The detection of the reference standard is automatic. An AES3 digital audio reference signal connected at the
AES Sub-D has a higher priority than any reference signal connected to the BNC jack.
The REF LED, when green, indicates that a valid reference signal has been detected. It will be orange if the AES
output signals are synchronized to the AES Input 1 and red in free-run mode.
When used in conjunction with a video processor, the reference source is the video module that delivers a 27
MHz reference signal (via the ABUS front panel connector). The REF LED will be green to indicate the validity of
this 27 MHz signal.
The relative phase between external sync signal and AES samples is respected for any case except for the Video
NTSC mode. For Video PAL mode, output samples are aligned with the start of the first line.
RA-110 rear panel The AES 110 Ω Sync input is located on "AES" Sub-D socket. The switch SW16 “REF110”
must be set on the LOZ position to properly terminate the line. Other syncs are connected on BNC "REF.IN". The
switch SW15 “REF75” must be set on the LOZ position to properly terminate the line. The second BNC is lined to
"REF.IN" input and may be used as loop-through. For this conditional use, the switch “REF75” must be set on the
HIZ position.
RA-X rear panel The sync signal must be connected to the "REF.IN" BNC connector. The switch SW15
“REF75” must be set to the LOZ position to properly terminate the line.
When used in a Symphonie frame, the module’s 75 Ω reference input can be connected to the global reference
signal (video or Word Clock only) instead of the signal on the REF IN connector by setting switch LK1 to position
1-2 (GLOBAL) on the rear panel.
GUIDE TO INSTALLATION AND OPERATION
DAP-781i | 11
2.5.2 Remote analog controlled tracking delay
For compatibility with previous video processors, like the DVP-101i and ASD-231i, the DAP-781i has an analog
tracking delay input on the rear RJ45 jack. An ABUS connection at the front of the DAP-781i overrides this input.
The module can delay the signal up to 2.73 sec (@48 kHz). A part (320 ms for 8 video frames) of the maximum
delay is reserved for the tracking delay.
The applied delay is the sum of a fixed user-adjusted delay (in 1 ms steps or on a sample-by-sample basis) and
a tracking delay coming from the video processor.
This signal is sent via an RS 422 path.
Video Processing Module
Audio Processing Module
VPD signal VPD signal
Figure 14 : Tracking signal
The signal period corresponds to the maximum delay reserved by the main module (T) and the positive pulse
width (tproc) corresponds to the required delay. For a sudden variation, DAP-781i integrates this modification
within 15 sec for a variation of 40 ms.
t
PROC
(MIN)
T (period)
t
PROC
(MAX)
t
LOW
t
PROC
Figure 15 : Timing chart
The reserved part (T) of delay is subtracted from the accessible maximum fixed delay value. Up to four cards
can share the same tracking signal.
2.5.3 GPI Outputs
Four open-collector GPI outputs (one for each channel) are available on the GPI socket. For each channel, the
output is dedicated to a no-lock condition on the digital input. In the absence of alarms, no current flows through
an output pin. These outputs are inactive when the alarms are disabled (ALRM menu, OFF selected).
GUIDE TO INSTALLATION AND OPERATION
12 | DAP-781i
3 Operation
3.1 DAP-781i user interface
The Figure below illustrates the DAP-781i user interface situated at the front end of the card. For information on
these controls, refer to the rest of this section.
-
1 2
REF
INPUTS
SELECT
3 4
ABUS
INPUTS
+
DAP-781i DIGITAL AUDIO PROCESSOR
DAP-781i
TOP VIEW
BICOLOR
ESC.
FRONT VIEW
Figure 16 : DAP-781i user interface
Status leds
INPUT 1
To
INPUT 4
(Bi-color)
Green: AES signal detected.
Orange: Test tone, Mute, Validity Bit, Channel Status CRCC Error
Red: No Lock, Parity or Coding error, Overload.
Input Dolby decoder option on error
REF (Bi-color)
Green: Valid reference signal detected.
Orange: All outputs referenced on AES Input n°1.
Red: Card on mode Free Run
Front panel pushbuttons
[SEL]
Activates the displayed parameter
[-]
Decreases value of selected parameter
[+]
Increases value of selected parameter
[ESC]
Returns to previous parameter
GUIDE TO INSTALLATION AND OPERATION
DAP-781i | 13
3.2 Configurations and adjustments
3.2.1 Adjustment
RV1 Output Sample Rate Adjustment in Free-Run mode (48kHz)
3.2.2 Switch configurations
Switch Channel 1 Position Designation
AX R-AX Rear panel selection (75 Ω) with HD26 Cable Adapter SW1, 2, 3, 6
SW11, 12, 13, 14
SW21, 22, 23, 24
SW31, 32, 33, 34
A110 R-A110 Rear panel selection (110 Ω)
LOZ 75 Ω termination associated with “REF.IN” input SW15
HIZ
LOZ 110 Ω termination associated with AES3 reference input SW16
HIZ
SW4, SW5 Spares
SW 7 to 10, 17 to20, 25 to 30 Do not exist.
3.3 Control
The DAP-781i can be controlled in three different ways:
• The card-edge push-buttons, 4-character display and status LEDs can be used to move through a
menu of parameters and to adjust parameter values.
• Miranda’s RCP-100 remote control panel can be used to access the same menu structure from a
remote location.
• Miranda’s iControl system can be used to access the card’s operating parameters from a remote
computer, using a convenient graphical user interface (GUI).
As the graphical interface is the most intuitive and easy-to-use method, it will be used as the basis for
describing the functionality of the DAP-781i is section 3.4. A full description of how to use the card
edge controls and the RCP-100 to access the menus is given in sections 3.5 and 3.6.
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14 | DAP-781i
3.4 iControl Interface
iControl is Miranda’s graphical user interface. Users can remotely access and operate many Miranda
products from a remote computer via an IP interface.
Establish the IP connection to the computer and the frame containing the DAP-781i card.
The iControl graphic interface window
The basic window structure for the DAP-781i is shown in figure 3.1. The window identification line
gives the card type (DAP-781i) and the card ID (129 in the example). The card ID identifies this
specific card to iControl, which may have access to multiple cards of the same type. The text in square
brackets is the slot number where the card is installed; the data entry point is accessed in the Info tab.
Figure 17 : DAP-781i iControl graphic interface window
GUIDE TO INSTALLATION AND OPERATION
DAP-781i | 15
There are four main sections in the window itself, identified in figure 17:
1. The top section displays icons on the left. These icons report different statuses such as card
communication status, input signal and reference signal format and statuses. In some instances, they
relate to conditions defined through parameters settings.
Manual Card Configuration – green if the card is controlled remotely, yellow when locally
controlled.
Input Status – green if OK, red if an error has been detected
Ref Status – green if OK, red if reference is absent.
ABUS Multiple Card Configuration – green if configuration and card setup are OK, red if there
is a mismatch between the configuration and actual card setup.
The DAP-781i displays nine icons, which monitor these functions:
1 2 3 4 5 6 7 8 9
Icon Function monitored Icon Function monitored
1 Manual card configuration 6 On-board Dolby E Decoder presence
2 AES 1 input status 7 Dolby Decoder Bitstream status
3 AES 2 input status 8 Reference status (mouse-over shows source)
4 AES 3 input status 9 ABUS Multiple card Config/Presence
5 AES 4 input status
Move the mouse over an icon and a detailed status message appears below the icon. If the mouse is
not held over an icon, the message area below the icons cycles through all current error or warning
messages related to the icons.
2. The left portion of the window contains selection buttons for all the parameter groups, which
become highlighted when they are selected; the main panel then displays the group’s set of
parameters. Each of the groups is described in detail below. This section can be hidden/revealed
by clicking the arrow icon on the left side of the window.
3. The lower section of the window’s left side contains a pull-down menu and 2 buttons to quickly
access user groups.
4. The main panel contains all the parameters specific to the group selected. It may contain several
tabs to help manage the different parameters.
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16 | DAP-781i
3.4.1 Audio Processing
The Audio Processing window (see figure 18) provides full audio processing and delay parameters for
the audio channels.
Figure 18 : Audio Processing group
Specific behavior with non-PCM audio:
Dolby E audio is supported in the DAP-781i. During frame-sync mode, when input video and reference
signals are not synchronized, Dolby E frames may be skipped or repeated.
In addition, for non-PCM audio, all level parameters (gain and attenuation), input swapping and phase
inversion are overridden to prevent any modification of the audio data.
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