Remote Camera Interface System

Remote Camera Interface System
Remote Camera Interface System
Introduction
Live-Link Mini is a highly-integrated camera extender system optimized
for electronic news gathering (ENG), uplink truck, and specialized
broadcast, corporate, and education applications. The system consists
of a compact, portable camera end unit and three choices of companion
“truck end” units. Two of the truck end units allow rack mounting while
the third version is portable and matches the size of the camera end unit.
Whatever combination is selected, all systems provide the resources
needed for a range of single-camera live events. Interconnected using just
one single-mode optical fiber, the same solid performance will be supplied whether the units are hundreds of feet or miles apart. Other notable
Live-Link Mini Camera End Unit Front View
features of Live-Link Mini systems can include support for embedded
and line-level audio, talent cueing (IFB), party-line (PL) and 4-wire intercom, AC and DC powering, and compatibility with 3G-,
HD-, and SD-SDI signals. Those resources, along with its fast, simple setup and “totally pro” performance make the Live-Link
Mini a unique product for demanding applications.
Key Features
• One 3G-/HD-/SD-SDI path in each direction
• Integrated 2-channel party-line (PL) intercom support
• Line-level and powered talent cueing (IFB) outputs
• 4-wire intercom support (selected truck end units)
• Interconnects using one single-mode fiber
• Audio de-embed outputs (selected truck end units)
• Excellent audio quality throughout
• Standard optical, video, and audio connectors
• Full SMPTE®-standards compatibility
• Battery mount on camera end and truck end portable units
Video Transport
Live-Link Mini transports two SDI video signals, one going from the camera end to the truck end and the other from the truck
end to the camera end. 3G-, HD-, and SD-SDI signals at a wide range of formats and rates are supported. On the front panel of
the camera end unit a BNC connector provides the “return” SDI signal. At the truck end units the SDI signal originating at the
camera end is provided as two independent, buffered SDI outputs.
Optical Transport
The camera end unit interconnects with its associated truck end unit using one strand of single-mode optical fiber. Two optical
wavelengths, one traveling in each direction, are used for signal transport. All video, audio, and control data is multiplexed
(combined) as part of a single industry-standard SDI signal. One ST optical connector is provided on each unit. This connector
type was selected because of its low cost and wide acceptance. It’s routine to find ST connectors terminated on the “house fiber”
that’s present in many sports stadiums, education facilities, and convention centers. It’s also common for mobile broadcast and
field-production applications to utilize ST-terminated tactical-grade TAC-4 or TAC-12 multi-strand fiber assemblies.
Three Truck End Units Available
To meet the needs of specific applications three Live-Link Mini truck end units are available. Two of the versions mount in one
space (1U) of a standard 19-inch equipment rack. The third version is portable and matches the form-factor (style) of the camera
end unit.
The two rack-mount truck end versions differ in their powering and audio de-embedding capabilities. The standard rack-mount
version is powered by 12 Vdc and relies on its SDI outputs to provide embedded audio to the connected equipment. This is
the most cost-effective version and meets the needs of “all embedded” applications where audio is always transported along
with picture information. The advanced version of the rack-mount truck end unit offers flexibility in powering and adds four
50364-0515, Issue 4
Live-Link Mini Truck End Unit Front Views – Standard Rack-Mount
Version (top), Advanced Rack-Mount Version (middle), and Portable
Version (right)
de-embed audio outputs. A source of 100-240 V, 50/60 Hz can
be connected to power the unit. Alternately, a 12 Vdc source
can be connected. Some applications may benefit from having
analog outputs associated with the audio channels embedded
by a connected camera, camcorder, or other video source. The
advanced rack-mount version de-embeds the four channels
associated with group 1, converts them to analog, and presents
them on four balanced line-level outputs.
The standard and advanced rack-mount truck end versions
provide support for both party-line (PL) and 4-wire intercom
systems. This allows integration into a large range of professional intercom scenarios. Dual-channel party-line user beltpacks can be directly connected and powered. Alternately, an
existing party-line intercom circuit can be directly connected,
with the Mini unit just acting as another user device. The
single-channel 4-wire intercom interface allows connection to
a local or remotely-located matrix intercom system.
The portable truck end version has a feature set optimized for
field applications where easy setup, fast configuration, small
size, and battery operation are important. Identical in size
to the camera end unit, a pair of Mini portable units can be
easily transported in a small portable case. As with the camera
end unit, powering can be provided by an external source of
12 Vdc or a broadcast-style battery. Additional features include
two de-embed analog outputs and party-line (PL) intercom
support.
On-Air Audio Signals
Unlike other systems from the Live-Link family, Mini’s camera
end unit does not provide analog microphone- or line-level
inputs for supporting on-air audio signals. Instead, Mini relies
on an associated camera, camcorder, or other video source to
embed on-air audio signals into audio group 1 of the source
SDI. This minimizes the camera end unit’s size, reduces cost,
and simplifies setup. The embedded audio signals are transported, along with picture data, to the associated Mini truck
end unit.
If the standard version of the Mini rack-mount truck end unit
is being used, on-air audio is only provided at the truck end as
part of the two SDI outputs; no de-embedding of group 1 audio
Studio Technologies, Inc.
is provided. The equipment connected to the truck end unit’s
SDI outputs, such as an encoder, router, or monitor, must be
able to handle the embedded audio.
The advanced version of the Mini rack-mount truck end
unit provides four balanced line-level analog outputs whose
source is de-embedded from the four channels associated with
embedded audio group 1. These outputs can be important for
applications that require analog signals that start as embedded
audio on Mini’s camera end SDI input. Of course, these audio
channels remain in the SDI signal and are present in the truck
end’s SDI outputs.
The portable truck end version provides two balanced line-level
analog outputs whose sources are de-embedded from channels
1 and 2 of embedded audio group 1. Providing just two channels
is a good compromise, working within the unit’s compact size
yet de-embedding the most commonly-utilized channels.
Signal Embedding and Continuous
Operation
Live-Link Mini’s line/IFB audio, intercom audio, and control
data are transported between camera and truck end units as
embedded SDI data. This data is combined with embedded
audio data that may be present on a connected SDI input signal.
The control data, required for features such as remote enabling
of the party-line interface “nulling” function and opposite-end
optical status, are embedded as horizontal ancillary (HANC)
data. Live-Link Mini-associated audio signals (line/IFB and
intercom) are transported in each direction using one group of
standard embedded SDI audio data. This allows the two line
inputs on the truck end to be sent to the camera end. And the
two audio channels associated with the intercom interfaces are
sent from the camera end to the truck end and vice-versa.
Live-Link Mini Remote Camera Interface System, Issue 4, Page 2
Live-Link Mini Truck End Unit Back Views – Standard RackMount Version (top) and Advanced Rack-Mount Version (bottom)
Mini’s overall audio transport design was carefully implemented so that audio embedded into group 1 by an external
device, such as a camera, will always be passed through
“end-to-end.” By default Live-Link Mini’s line/IFB audio and
intercom audio data is embedded into group 2; any audio data
present in groups 1, 3, and 4 is passed through from the SDI
input on either end (camera or truck) to the SDI output on the
other. For added flexibility, on both of the rack-mount truck
end versions a configuration setting allows the group used for
embedding to be changed from group 2 to group 3.
Should an external source of SDI not be provided to the SDI
input on the camera end or truck end units an internal SDI
clock and video signal generator in each unit will automatically
become active. This ensures that an SDI signal will always be
present and line/IFB audio, intercom audio, and control data
transport will be maintained. The default SDI image provides
a unique solid color that slowly changes over the SDI video
data palette. This ensures that connected equipment, and
associated users, will be able to recognize that the SDI signal
is active. For application flexibility, on both rack-mount truck
end versions the internally-generated SDI video signal can be
selected from two choices, the alternate setting allowing color
bars to be generated.
Talent Cueing (IFB)
For talent cueing and audio return support two line-level
audio signals can be transported from the truck end unit to
the camera end unit. The line inputs on the truck end units
allow connection of a variety of analog line-level audio signals.
To support a range of applications, both line-level “dry” and
powered “wet” IFB outputs are provided on the camera end
unit. The balanced line-level outputs can be useful when interfacing with wireless IFB systems and battery-powered user
beltpacks. Listen-only beltpacks, such as those from Studio
Technologies, can be directly connected to and powered by
the camera end unit’s IFB output. In most applications the IFB
signals will be used for talent cueing. But the audio quality is
such that even transporting on-air signals would be appropriate. As an additional resource, the signal connected to channel
1 of the line input on the truck end units can also be selected
to route to intercom channel 1. This useful feature allows
Studio Technologies, Inc.
Live-Link Mini Camera End Unit and Truck End Unit Portable
Version Back View
intercom users, typically camera operators, to monitor the cue
audio signals being sent to on-air talent.
Intercom
A major strength of Live-Link Mini is its integrated 2-channel
intercom system. With an extensive list of resources the typical hassles and limitations associated with intercom system
implementation are eliminated. A 2-channel party-line (PL)
intercom interface is provided on the camera end and all three
truck-end versions. Each PL interface can be user configured to
operate either stand-alone or in conjunction with an existing
party-line circuit. In the stand-alone mode DC power and two
channels of audio termination are provided. This allows user
beltpacks, such as the ubiquitous RTS® BP325, to be directly
connected and powered. A fully functional camera-end-totruck-end “comms” system can be up and running in just
minutes. The advanced 2-wire-to-4-wire converter circuitry
provides simply excellent audio performance. And for a user
to optimize the important party-line audio “null” requires only
a press of the auto-null pushbutton switch. Circuitry under
processor control will then quickly select the setting required
for optimum audio performance.
Both versions of the Live-Link Mini rack-mount truck end unit
also provide a 4-wire interface that is associated with intercom
channel 2. An analog audio input and analog audio output
allow direct interfacing with local and remotely-located matrix
intercom systems. This allows intercom users at the camera
end unit, the rack-mount truck end unit, and a remote location
to simultaneously be part of the same conversation.
Live-Link Mini Remote Camera Interface System, Issue 4, Page 3
The party-line interfaces on the camera end and truck end
units can be user-selected for stand-alone operation, providing
industry-standard DC power and two PL audio channels. The
camera end unit has sufficient power to support up to three
BP325 beltpacks. All three versions of the truck end units
provide more power, allowing up to five BP325 beltpacks to be
connected. The party-line intercom interfaces on the camera
end and truck end units offer additional flexibility. As previously mentioned, in the stand-alone mode beltpacks can be
directly supported. But for compatibility with existing partyline intercom circuits each PL interface can be user-selected
to disable its power source and terminations. This will allow
Mini’s party-line interfaces to perform as “just another” user
device on an existing PL system.
Camera End Unit Details
The Live-Link Mini camera end unit is housed in a lightweight
aluminum enclosure with an integrated carry handle. Weighing less than 4 pounds (<1.8 kg) it is well suited for portable
applications. All input and output signals are interfaced using
standard connectors. Status and signal present LEDs are provided for operating and troubleshooting assistance.
Two power sources can be connected to the camera end unit. A
4-pin XLR connector on the front panel allows a 12 Vdc power
supply to be connected. A battery mount, located on the back
of the unit’s cover, allows use of a broadcast-standard rechargeable battery. The battery mount is compatible with batteries
from Anton/Bauer®. Alternately, an optional V-Mount battery
mount can be provided.
Rack-Mount Truck End Unit Details
Each of the two available Live-Link Mini rack-mount truck
end units install in one space (1U) of a standard 19-inch rack.
They are housed in an aluminum enclosure that weighs less
than 4 pounds (<1.8 kg), making them perfect for mobile or
“fly-pack” applications. LEDs on their front panels provide a
complete view of system operation, including an indication
of the camera end unit’s optical interconnection status. As
with the camera end unit, standard connectors ensure fast
installation and rapid, straight-ahead troubleshooting. These
include BNC connections for digital video and 3-pin XLRs for
audio and intercom.
The standard version of the rack-mount truck end unit is powered using an external 12 Vdc source that is connected via a
broadcast-standard 4-pin XLR connector. The advanced version
of the rack-mount truck end unit allows an AC mains source of
100-240 V, 50/60 Hz to be directly connected. The unit can also
be DC powered using a 12 V source that is connected via a 4-pin
XLR connector. If both AC and DC power sources are connected
the unit will be powered by the AC mains supply. Only if the
AC mains source fails will the DC source power the unit. This
allows a source of DC, typically a rechargeable battery, to serve
in a backup capacity. With this arrangement normal operation
can continue even if AC mains power is lost.
Portable Truck End Unit Details
The Live-Link Mini portable truck end unit is housed in a
lightweight aluminum enclosure and includes an integrated
carry handle. It weighs less than 4 pounds (<1.8 kg) making it
well suited for portable and “throw-down” applications. Input
and output signals are interfaced using standard connectors,
the possible exception being the two de-embed audio outputs
which use a 5-pin XLR. A complement of status and signal
present LEDs are provided.
Two DC power sources can be connected. A 4-pin XLR
connector on the front panel allows a 12 Vdc power supply
to be connected. A battery mount, located on the back of the
unit’s cover, is compatible with batteries from Anton/Bauer®.
An optional V-Mount battery mount can be provided.
Live-Link Mini General Specifications
SDI Compatibility, Supported Resolutions, and Rates:
SD-SDI per SMPTE® ST 259:2008:
525i: 59.94
625i: 50
HD-SDI per SMPTE ST 292:2011:
720p: 50, 59.94, 60
1080i: 50, 59.94, 60
1080p: 23.98, 24, 25, 29.97, 30
1080psf: 23.98, 24
3G-SDI Level A per SMPTE ST 424:2006 and ST 425:2011:
1080p: 50, 59.94, 60
Studio Technologies, Inc.
Line-Level Audio, Intercom Audio, and Control Data
Transport:
SD-SDI: embedded as HANC Ancillary Data per SMPTE ST
272:2004 and ST 291:2011
HD-SDI: embedded as HANC Ancillary Data per SMPTE ST
291:2011 and ST 299:2009
3G-SDI: embedded as HANC Ancillary Data per SMPTE ST
291:2011, ST 299:2009, and ST 425:2011
SDI Inputs and Outputs:
Type: unbalanced
Impedance: 75 ohms
Level: 800 mV p-p, nominal
Live-Link Mini Remote Camera Interface System, Issue 4, Page 4
Optical Interconnect:
Number of Fibers: 1
Fiber Type: single mode
Wavelengths: 1310 ±10 nm, 1550 ±30 nm (DFB lasers)
Launch Power: –5 dBm, nominal
Receive Sensitivity: –18 dBm, nominal at 2.97 Gb/s,
pathological
Maximum Input Power: –3 dBm, nominal
Typical Fiber Interconnect Length: 10 km minimum
Line Input to Line Output:
Frequency Response: ±1 dB, 20 Hz to 20 kHz
Distortion (THD+N): 0.01%, measured at 1 kHz
Dynamic Range: 101 dB
4-Wire Input to Party-Line (PL) Intercom Pin 3:
Frequency Response: ±1.25 dB, 100 Hz to 10 kHz (band limited
for optimal performance)
Distortion (THD+N): 0.02%, measured at 1 kHz
Dynamic Range: 99 dB
Party-Line (PL) Hybrids:
Topology: 3-section analog circuitry compensates for resistive,
inductive, and capacitive 2-wire party-line loads
Nulling Method: automatic upon user initiation, processor
implements digital control of analog circuitry; settings stored in
non-volatile memory
Line Impedance Range for Optimal Nulling: 120 to 240 ohms
Trans-Hybrid Loss: >45 dB, typical at 1 kHz
Live-Link Mini Camera End Unit
Specifications
Line Outputs:
Type: analog, electronically balanced, capacitor-coupled,
intended to drive balanced loads of 2 k ohms or greater
Nominal Audio Level: +4 dBu
Maximum Audio Level: +24 dBu into 10 k ohms
Source Impedance: 200 ohms
Connectors:
Optical: ST (UPC polish)
SDI: BNC, 3G-SDI optimized, gold plating on center pin,
per IEC 61169-8 Annex A
Line Outputs, Powered IFB Output, and Party-Line Intercom:
3-pin male XLR
DC Input: 4-pin male XLR
Power Inputs:
DC and Battery Mount: 10 to 18 Vdc, 1.7 A maximum at 12 V;
1.9 A at 10 V
Battery Mounting: Anton/Bauer® QRC-Gold® standard;
V-Mount optional
Dimensions (Overall):
6.5 inches wide (16.5 cm)
4.9 inches high (12.5 cm)
9.5 inches deep (24.1 cm)
Weight: 3.6 pounds (1.6 kg)
Order Code:
Camera End Unit – Portable: LLM-CA-105
Live-Link Mini Standard and Advanced
Truck End Unit Specifications
Line and 4-Wire Intercom Inputs:
Type: analog, electronically balanced, capacitor-coupled,
20 k ohms
Nominal Level: +4 dBu
Maximum Level: +24 dBu
4-Wire Intercom Output:
Type: analog, electronically balanced, capacitor-coupled,
intended to drive balanced loads of 2 k ohms or greater
Source Impedance: 200 ohms
Nominal Level: +4 dBu
Maximum Level: +24 dBu into 10 k ohms
Powered IFB Output:
Type: 2-channel unbalanced (common on pin 1, DC modulated
with channel 1 audio on pin 2, channel 2 audio on pin 3)
Output Power (Pin 2 to Pin 1): 28 Vdc, 130 mA maximum
Nominal Audio Level: –10 dBu
Maximum Audio Level: +9 dBu
Impedance (Pin 2 to Pin 1; Pin 3 to Pin 1): 200 ohms
De-Embed Outputs (Advanced Version Only):
Type: analog, electronically balanced, capacitor-coupled,
intended to drive balanced loads of 2 k ohms or greater
Source Impedance: 200 ohms
Nominal Level: +4 dBu
Maximum Level: +24 dBu into 10 k ohms
Frequency Response: ±0.1 dB, 10 Hz to 22 kHz
Distortion (THD+N): 0.0025%, at +4 dBu out, 1 kHz
Dynamic Range: 117 dB
Party-Line (PL) Intercom Interface:
Type: 2-channel party-line, unbalanced (common on pin 1,
DC modulated with channel 1 audio on pin 2, channel 2 audio
on pin 3)
Compatibility: dual-channel intercom systems such as from
RTS®
Output Power (Pin 2 to Pin 1): 28 Vdc, 200 mA maximum
(requires 10 mA current draw for detection of connected
device); selectable on/off
Impedance (Pin 2 to Pin 1; Pin 3 to Pin 1), Party-Line Power
Enabled: 200 ohms
Impedance (Pin 2 to Pin 1; Pin 3 to Pin 1), Party-Line Power
Disabled: >10 k ohms
Nominal Audio Level: –10 dBu
Maximum Audio Level: +9 dBu
Party-Line (PL) Intercom Interface:
Type: 2-channel party-line, unbalanced (common on pin 1,
DC modulated with channel 1 audio on pin 2, channel 2 audio
on pin 3)
Compatibility: dual-channel intercom systems such as from
RTS®
Output Power (Pin 2 to Pin 1): 28 Vdc, 300 mA maximum
(requires 10 mA current draw for detection of connected
device); selectable on/off
Impedance (Pin 2 to Pin 1; Pin 3 to Pin 1), Party-Line Power
Enabled: 200 ohms
Impedance (Pin 2 to Pin 1; Pin 3 to Pin 1), Party-Line Power
Disabled: >10 k ohms
Nominal Audio Level: –10 dBu
Maximum Audio Level: +9 dBu
Studio Technologies, Inc.
Live-Link Mini Remote Camera Interface System, Issue 4, Page 5
Connectors:
Optical: ST (UPC polish)
SDI: BNC, 3G-SDI optimized, gold plating on center pin,
per IEC 61169-8 Annex A
Line and 4-Wire Intercom Inputs: 3-pin female XLR
Party-Line Intercom and 4-Wire Intercom: 3-pin male XLR
De-Embed Outputs (Advanced Version Only): 3-pin male XLR
DC Input: 4-pin male XLR
AC Mains Input (Advanced Version Only): 3-blade, IEC 320
C14-compatible (mates with C13)
Power Input – Standard Version:
DC: 10 to 18 V, 1.9 A maximum
Power Inputs – Advanced Version:
AC Mains: 100 to 240 V, 50/60 Hz, 24 W maximum
DC: 10 to 18 V, 2.0 A maximum
Dimensions (Overall):
19.0 inches wide (48.3 cm)
1.72 inches high (4.4 cm)
8.7 inches deep (22.1 cm)
Mounting: one space (1U) in a standard 19-inch rack
Weight: 3.9 pounds (1.8 kg)
Order Codes:
Truck End Unit – Standard Version: LLM-TE-105
Truck End Unit – Advanced Version: LLM-TE-107
Line Inputs:
Type: analog, electronically balanced, capacitor-coupled,
20 k ohms
Nominal Level: +4 dBu
Maximum Level: +24 dBu
De-Embed Outputs:
Type: analog, electronically balanced, capacitor-coupled,
intended to drive balanced loads of 2 k ohms or greater
Source Impedance: 200 ohms
Nominal Level: +4 dBu
Maximum Level: +24 dBu into 10 k ohms
Frequency Response: ±0.1 dB, 10 Hz to 22 kHz
Distortion (THD+N): 0.0025%, at +4 dBu out, 1 kHz
Dynamic Range: 117 dB
Connectors:
Optical: ST (UPC polish)
SDI: BNC, 3G-SDI optimized, gold plating on center pin,
per IEC 61169-8 Annex A
Line Inputs: 3-pin female XLR
Party-Line Intercom: 3-pin male XLR
De-Embed Outputs: 5-pin male XLR
DC Input: 4-pin male XLR
Power Inputs:
DC and Battery Mount: 10 to 18 Vdc, 1.7 A maximum at 12 V;
1.9 A at 10 V
Live-Link Mini Truck End Portable Unit
Specifications
Battery Mounting: Anton/Bauer® QRC-Gold® standard;
V-Mount optional
Party-Line (PL) Intercom Interface:
Type: 2-channel party-line, unbalanced (common on pin 1,
DC modulated with channel 1 audio on pin 2, channel 2 audio
on pin 3)
Compatibility: dual-channel intercom systems such as from
RTS®
Output Power (Pin 2 to Pin 1): 28 Vdc, 300 mA maximum
(requires 10 mA current draw for detection of connected
device); selectable on/off
Impedance (Pin 2 to Pin 1; Pin 3 to Pin 1), Party-Line Power
Enabled: 200 ohms
Impedance (Pin 2 to Pin 1; Pin 3 to Pin 1), Party-Line Power
Disabled: >10 k ohms
Nominal Audio Level: –10 dBu
Maximum Audio Level: +9 dBu
Dimensions (Overall):
6.5 inches wide (16.5 cm)
4.9 inches high (12.5 cm)
9.5 inches deep (24.1 cm)
Weight: 3.6 pounds (1.6 kg)
Order Code:
Truck End Unit – Portable Version: LLM-TE-109
Specifications subject to change without notice.
© by Studio Technologies, Inc., May 2015
Studio Technologies, Inc.
Skokie, Illinois USA
+1 847-676-9177
www.studio-tech.com
Studio Technologies, Inc.
Live-Link Mini Remote Camera Interface System, Issue 4, Page 6
Was this manual useful for you? yes no
Thank you for your participation!

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

Download PDF

advertising