Miranda DV-Bridge+ Instruction Manual

GUIDE TO INSTALLATION AND OPERATION
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Safety Compliance Information
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.
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
EN 55024 Electromagnetic Immunity
CONTACT MIRANDA
For technical assistance, please contact
the Miranda Technical Support centre
nearest you:
Americas
Telephone:
[phone]
e-mail:
tec[email protected]
Asia
Telephone:
[phone]
e-mail:
[email protected]
Europe, Middle East, Africa, UK
Telephone:
[phone]
e-mail:
[email protected]
France (only)
Telephone:
[phone]
e-mail:
[e-mail]
Visit our web site at www.miranda.com

GUIDE TO INSTALLATION AND OPERATION
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Contents
page
1 DV-Bridge+ DV To/From Digital Audio-Video Codec ...............1
1.1 Introduction ..............................................................................1
1.2 Features...................................................................................2
2Installation................................................................................3
2.1 Connections.............................................................................3
2.2 Application Examples...............................................................4
3 Operation .................................................................................7
3.1 Front PanelUser Interface........................................................7
3.2 DIP Switches on Bottom Panel... .............................................8
3.3 Device Control........................................................................11
4 Troubleshooting .....................................................................13
5Specifications........................................................................14

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GUIDE TO INSTALLATION AND OPERATION
DV Bridge + | 1
1 DV-Bridge+ DV To/From Digital Audio-Video Codec
1.1 Introduction
DV-Bridge+ is a compact, desktop unit designed to convert 4:2:2 (ITU-
601) video and AES-3id audio to and from DV compressed audio/ video.
The DV-Bridge+ is ideal for interfacing consumer or professional miniDV
camcorders, VTRs, and editing or graphics systems equipped with the
IEEE-1394 (FireWire, i.LINK) interface to professional uncompressed
(4:2:2 and AES-3id) video and audio equipment. DV-Bridge+ acts as
either a DV encoder or decoder. When operating in encode mode, DV-
Bridge+ encodes material originating in 4:2:2 and AES-3id to the DV
format and outputs DV on the IEEE-1394 interface. As a decoder, DV-
Bridge+ decodes material arriving on the same IEEE-1394 interface and
converts it to 4:2:2 and AES-3id. Convenient NTSC/PAL, S-Video and
line-level analog audio outputs allow simple monitoring or dubbing of the
DV signal. DV-Bridge+ is ideal for a number of recording, dubbing and
monitoring applications in a mixed DV/4:2:2 and AES-3id environment.
DV-Bridge+ also provides time code support (LTC, DVITC) and remote-
control capabilities through the IEEE-1394 ports and through a RS-422
serial port. The DV-Bridge+ features a simple user interface, using a
single button to control its functions and bi-color monitoring LEDs. Some
parameters are set using DIP switches on the bottom of the unit. Input
and output connectors are in the back, as is the power switch. The DV-
Bridge+ features a universal power supply, eliminating the need for a

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separate power converter. A built-in anti-slip camera rest allows a DV
camera to sit conveniently in view to monitor its operation.
Figure 1 Functional Block Diagram
1.2 Features
-Bi-directional DV to SDI/AES converter
-Designed for DV devices equipped with IEEE-1394 interface (a.k.a.
i.LINK, Firewire)
-Encodes 4:2:2 video and AES-3id audio to DV stream
-Decodes DV stream to 4:2:2 (SDI) video and AES-3id audio
-Dual IEEE-1394 ports
-AES-3id audio input and output for interconnection with professional
audio equipment
-Convenient NTSC/PAL, S-Video and analog audio outputs for
monitoring and dubbing
-Automatic detection of 525/625 line/scan formats
-Support of 32, 44.1 and 48 kHz audio sample rates
-Fully compatible with existing software and hardware for DV/i.Link
processing
-Compact package suitable for desktop
-Built-in, universal power supply
-LTC and DVITC time code support in input and output with
OSD (On-Screen Display) capability
-Remote-control using IEEE-1394 (e.g. a DV VTR) or through the
RS-422 serial port (compatible with basic commands of the Sony
BVW-75 protocol)

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2 Installation
2.1 Connections
Refer to figure 2.1 and to the following description when connecting the
DV-Bridge+.
Figure 2.1 Rear view of the DV-Bridge+
1 DV In/Out
Connect a DV source to one of the DV connectors at the rear of the DV-
Bridge+ for input and output. Source must comply with IEEE-1394
(i.Link) standard. The 4-pin and 6-pin connectors effectively provide
active loop-through when the unit is turned on.
2 SDI In/Out
Connect an SDI signal to the SDI input BNC connector (left-hand side)
labeled SDI. The DV-Bridge+ accepts 4:2:2 serial digital video signals
in either 525 or 625 line formats. The input signal must conform to the
SMPTE 259M standard. For DVITC timecode support, insert a timecode
conforming to SMPTE 12M in the input signal. Connect destination
equipment to the SDI output BNC connector (right-hand side). The
DVITC timecode in the output signal respects the same standard as the
one in the input signal.
3 AES In/Out
Connect an unbalanced AES signal to the AES input BNC connector
labeled AES. The DV-Bridge+ supports 32, 44.1 and 48 kHz sample
rates. This signal must comply with the AES-3id-1995 (SMPTE 276M)
standard. Connect destination equipment to the AES output BNC
connector (right-hand side).
4 LTC In/Out
Connect an LTC signal to the LTC input BNC connector labeled LTC
(upper one). The DV-Bridge+ accepts LTC signals for 525 or 625 line
formats. This signal must comply with the SMPTE 12M standard.
Connect destination equipment to the LTC output BNC connector (lower
one).

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5 Monitoring Output
Connect analog destination equipment to the connectors at the rear of
the DV-Bridge+. Use the BNC labeled Composite or the mini-Din
labeled S-Video for video output; use the two RCA labeled R and L for
audio output.
6 AC In
Connect the supplied AC power cord into AC inlet. Both 120 VAC and
220 VAC standards are supported by the DV-Bridge+ built-in power
supply.
2.2 Application Examples
The following figures show typical set-ups for using the DV-Bridge+.
Editing video and audio where the editing workstation operates in either
DV or 4:2:2 while the video source/destination is in the other is
illustrated in figures 2.2 and 2.3. Transferring video and audio from one
format to the other is illustrated in figures 2.4 and 2.5. Dubbing from a
DV source to a consumer VTR is shown in figure 2.6, while figure 2.7
shows how to monitor a DV-to-DV dubbing session.
Figure 2.2 Editing with a DV Workstation and a 4:2:2 VTR
The RS-422 DIP switch is set to Controlling. IEEE-1394 device control
from the workstation is transferred to the VTR via RS-422 Sony
protocol.
DV/CONTROL
Analog Monitor
Studio VTR or Other
4:2:2 + AES Destination
4:2:2+AES+LTC
NTSC/PAL
& Audio
Monitoring
Destination
RS-422 SERIAL PORT
DV Editing System
Source

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Figure 2.3 Editing with a 4:2:2 Workstation and a DV VTR
The RS-422 DIP switch is set to Tributary. RS-422 device control from
the workstation is transferred to the VTR via the IEEE-1394
NOTE : With Tributary option selected you must only connect one DV
device to the DV-Bridge+; the second IEEE-1394 port must remain
empty.
Figure 2.4 Transferring from DV to SDI+AES+LTC
Analog Monitor
4:2:2+AES+
LTC
NTSC/PAL
& Audio
Monitoring
4:2:2 Editing System
RS-422 SERIAL
PORT
Source
Destination
DV VTR DV Camcorder
DV/CONTROL
OR
DV
Analog Monitor
Studio VTR or Other
4:2:2 + AES Destination
4:2:2+AES+LTC
NTSC/PAL
& Audio
Monitoring
Destination
DV Camcorder
Source
DV VTR

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Figure 2.5 Transferring from SDI+AES+LTC to DV
Figure 2.6 Dubbing from DV to Consumer VCR (VHS or S-VHS)
Figure 2.7 Monitoring a DV to DV transfer
4:2:2
+ AES
Analog Monitor
NTSC/PAL
& Audio
MonitoringSource
DV
Studio VTR or Other
4:2:2 + AES Destination
DV Camcorder
Destination
DV VTR
+ LTC
Analog Monitor
DV Camcorder
DV
DV VTR
NTSC/PAL
& Audio
Monitoring
Source
c
Destination
Destination
Consumer VCR or VHS/SVHS
DV Camcorder
DV
NTSC/PAL/S-Video
& Audio
Source
DV VTR

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3 Operation
Controls for the DV-Bridge+ are found on the front panel (see figure
3.1), and on the bottom of the unit (see figure 3.2).
3.1 Front Panel User Interface
Once the DV-Bridge+ is connected to the source and destination
equipment, a single front-panel button is used to select the operating
mode. Operating mode and signal status are monitored by LEDs.
Figure 3.1 Front panel
To set the DV-Bridge+, simply push the button to select the desired
mode; the mode toggles each time the button is pushed. Modes are:
-SDI→DV: encodes 4:2:2 video and AES audio to Digital
Video. This mode will function even if
there is no AES audio present.
-DV→SDI: decodes Digital Video to 4:2:2 video and AES
audio.
-SDI→SDI: transfers between 4:2:2 video and AES audio
source and destination.
-Auto: This mode will detect if the source is DV or SDI
and will either decode it or transfer it to an SDI
destination equipment.
Note:
At any time, any encoding, decoding or transfer operation can be
monitored using the analog video and audio outputs at the rear of the
unit, allowing the use of an analog monitor. Alternatively, the analog
output can be used to record from an SDI or DV source using a
consumer VCR; simply select SDI→SDI to record from a SDI source
and DV→SDI to record from a DV source (analog monitoring and
recording are possible even if no SDI or DV destination equipment is
connected to the unit).
Mode selection
pushbutton Mode
LEDs Signal Status LEDs

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The Mode LEDs are bicolor and indicate the status of the input signals,
as follows:
Green: the mode is operating correctly;
Red: indicates an invalid or absent input signal. Check
that the mode selected conforms to the equipment
connected or verify that there is an input signal pre-
sent and that cables are properly connected.
Orange: For DV→SDI mode only, indicates that a DV input is present
but that its frame rate is far from the nominal frequency; the
internal DV-Bridge+ VCXO is not able to lock correctly on this
input. When this happens, pixellization effects can be
expected on the SDI output as well as noise on the audio
outputs cycling every few minutes.
(This occurs on PCs running Windows 2000 and Windows
98SE in NTSC; in effect, the PC outputs a NTSC DV signal
with a frequency offset of -150 to -500 ppm, which is out of the
VCXO capture range.)
The Signal Status LEDs indicate the video line format, audio sample
rate and time code format.
3.2 DIP Switches on Bottom Panel
The bottom panel has two sets of
DIP switches, labelled to indicate
their function as shown in figure 3.2.
These switches are used to set up
the DV-Bridge+ with respect to time
code, default video standard,
compression standard and control
interface status, as described in the
following sections.
The TC OSD ON switch lets you
choose whether or not to display the
time code at the 4:2:2 SDI output and
at the monitoring output. Setting this
switch to the "1" position enables the
OSD; "0" disables it.

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Figure 3.2 Underside of the DV-Bridge+
The TIME CODE INSERTION LINE SELECTION switches allow you to
turn DVITC time code insertion on or off, and when on, to choose the
lines where you want to insert the time code.
The DEFAULT switch lets you choose the default video standard (525
or 625 lines). The DV-Bridge+ supports both standards in the same
session without setting any switches, but a lot of DV workstations are
not able to do so. Those kinds of workstation set their software DV
driver in one standard or the other only once at power-up by looking at
which standard an attached DV device is working with. So in any case
where you don’t have an active video source (4:2:2) to set this standard,
be careful to set this switch correctly before plugging the DV-Bridge+
into your DV workstation and before turning on the workstation.
The COMPRESSION switch lets you choose between DV25 or
DVCPRO25 compression. This switch is only relevant if you are working
in 625 lines because it is only in this case that these compressions are
different. Most DV workstations work with DV25 compression. Keep in
mind that this switch controls only the way that the DV-Bridge+
generates a DV stream on the iLink; it receives and correctly converts a
DV stream into 4:2:2 without changing this switch.
The TIMECODE switches lets you choose the way that your time code
sources are processed for a 4:2:2-to-DV transfer. The DV-Bridge+
supports LTC and DVITC time code. By setting the first dip switch in
AUTO, the DV-Bridge+ automatically selects the right input. First, it
looks for DVITC timecode in the 4:2:2 signal. If there are errors in this
timecode, it changes to the LTC input. Finally, if there are also errors at
this input or if no signal is present, the DV-Bridge+ itself generates the
time codes in both standards. If you set the first dip switch to MAN, the
second dip switch lets you manually select the appropriate time code
source. In any case, both kinds of time code (LTC and DVITC) are
generated whatever the conversion mode.
The RS422 switch lets you choose the way that you will control the DV-
Bridge+ and the video devices that are attached to it.
•If you set this switch to CONTROLLING, you are able to control the
DV-Bridge+ and a 4:2:2 VTR via its serial port through the iLink as
if it were a DV VTR. Table 3.1 shows the DV device commands that
are supported under this option by the DV-Bridge+.

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•If you set this switch to TRIBUTARY, you can control the DV-
Bridge+ and a DV VTR by its iLink port through the RS-422 link as
if it were a 4:2:2 VTR. Be careful to plug only one IEEE-1394
device into the DV-Bridge+ in this mode. This device should be a
DV VTR if you want to be able to control it. Table 3.2 shows the
Sony protocol commands that are supported under this option by
the DV-Bridge+.

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3.3 Device Control
The DV-Bridge+ now supports most AV/C commands on the iLink.
When using this protocol to communicate with the DV-Bridge+, you
should consider it as a VTR and use the appropriate AV/C commands
for this type of AV device. The following AV/C commands can be
associated with these modes.
Table 3.1 DV Device Control (IEEE-1394 AV/C VTR Commands) in
controlling mode
Supported DV Device Commands
(IEEE-1394 VTR AV/C Commands)
(syntax: NAME(opcode,first operand))
ABSOLUTE TRACK NUMBER(52h,71h)
CONNECT AV(20h,XXh)
INPUT PLUG SIGNAL FORMAT(19h,XXh)
INPUT SIGNAL MODE(79h,FFh)
MEDIUM INFO (DAh,7Fh)
OUTPUT PLUG SIGNAL FORMAT(18h,XXh)
OUTPUT SIGNAL MODE(78h,FFh)
PLAY FASTEST FORWARD(C3h,3Fh)
PLAY FASTEST REVERSE(C3h,4Fh)
PLAY FORWARD(C3h,75h) SDI to DV
PLAY FORWARD PAUSE(C3h,7Dh) SDI to DV
RECORD(C2h,75h) DV to SDI
RECORD PAUSE(C2h,7Dh) DV to SDI
PLAY NEXT FRAME(C3h,30h)
PLAY PREVIOUS FRAME(C3h,40h)
WIND FAST FORWARD(C4h,75h)
WIND REWIND(C4h,65h)
WIND STOP(C4h,60h) SDI to SDI
RECORDING SPEED(DBh,7Fh)
SUBUNIT INFO(31h,XXh)
TIME CODE (51h,71h)
UNIT INFO (30h,FFh)
Mode

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Table 3.2 Sony Protocol Commands supported
Supported Sony Protocol Commands
(as defined for BVW-75 VTR)
(syntax: NAME(first opcode, second opcode, ...))
FAST FORWARD(20h,10h)
JOG FORWARD(2Xh,11h)*
JOG REVERSE(2Xh,21h)*
PLAY(20h,01h) DV to SDI
REC(20h,02h) SDI to DV
REWIND(20h,20h)
SHUTTLE FORWARD(2Xh,13h)*
SHUTTLE REVERSE(2Xh,23h)*
STATUS SENSE(61h,20h)
STOP(20h,00h) SDI to SDI
TIMECODE GEN DATA SENSE(61h,0Ah)
VAR FORWARD(2Xh,12h)*
VAR REVERSE(2Xh,22h)*
Mode
* These commands can have a different effect on the DV-Bridge+
than on a real 4:2:2 VTR

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4 Troubleshooting
1-When using some camcorder models as a DV source, the DV
signal may be lost if you try to unplug the iLink cable from the DV-
Bridge+ during the transmission. To recover from this situation, turn the
camcorder off and then on again.
2-Macintosh users will have some problems if they try to toggle the
video format (525 to 625 or 625 to 525) in the same session; they will
not be able to process the video sequences correctly in the new format.
The DV-Bridge+ must be powered on in the right video format (even if
no input signal is connected to the unit) before attempting to start the
computer and launch the editing software. Additionally, when no input
signal is connected, the DV-Bridge+’s default line format will still be
detected by the computer, causing the same problem if it is not the
format that the editing software will use. Set the required default line
format by using the DEFAULT switch on the underside of the DV-
Bridge+.
This issue is well known and documented on the Apple web site for any
kind of DV source.

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5 Specifications
DV INPUT/OUTPUT
Signal(2): DV on IEEE-1394/i.LINK/Firewire
Connectors: 4 pin and 6-pin IEEE-1394 sockets
INPUT
Video input
Video signal: 4:2:2 SMPTE 259M-C (270 Mbps)
Cable length: 250m (850') (Belden 8281)
Return loss: >15 dB up to 270 MHz
Audio input
Audio signal: AES-3id-1995 (SMPTE 276M)
Level: 1.0 Vp-p
Impedance: 75 Ωunbalanced
Sampling rate: 32, 44.1, 48 kHz
DIGITAL OUTPUT
Video output
Video signal: 4:2:2 SMPTE 259M-C (270 Mbps)
Return loss: >15 dB up to 270 MHz
Audio output
Audio signal: AES-3id-1995 (SMPTE 276M)
Level: 1.0 Vp-p
Impedance: 75 Ωunbalanced
Sampling rate: 32, 44.1, 48 kHz
Jitter: < 0.3 UI
ANALOG OUTPUT
Video output
Video signal: NTSC (525/60) SMPTE 170M
PAL (625/50) ITU-R BT.470-6.
Return loss: >20 dB up to 5 MHz
Video signal: S-Video (Y-C)
Return loss: >20 dB up to 5 MHz
Connector: 4 pin mini-DIN
Audio output
Audio signal: Stereo unbalanced line out
Level: 3.5 Vp-p

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PROCESSING PERFORMANCE
Compression: DV format at 25 Mbps per DV Blue Book
and DVCPRO
DV 4:1:1 in NTSC, 4:2:0 in PAL,
DVCPRO 4:1:1 in PAL
Delay: DV→SDI mode: 1.5 frames (TBC)
SDI→DV mode: 1.5 frames (TBC)
SDI SDI mode: 2 µs (TBC)
ANALOG OUTPUT QUANTIZATION
Video: 8 bits
Audio: 16 bits
Physical size: 190 mm X 115 mm X 40 mm (7.5" X 4" X
1.6")
ELECTRICAL
Power input range: 100-240 V / 50-60 Hz
Power: 13 W