Distribution Amplifiers
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DISTRIBUTION AMPLIFIERS
Digital Video
DDA-4006
8 O/P 270Mb/s ASI/SDI Non-Reclocking DA
DDA-4007
8 O/P 270Mb/s ASI/SDI
Reclocking DA
DDA-4900
Dual 3 O/P 270Mb/s ASI/SDI Non-Reclocking DA
DVC-4112
SDI to Composite/Component Converter DA
HDA-4500
6 O/P 1.485Gb/s HD / 270Mb/s SD Non-Reclocking
DA
HDA-4510
6 O/P 1.485Gb/s HD / 270Mb/s
SD Reclocking DA
HDA-4521
Dual 1 In, 3 Out 1.485Gb/s HD / 270Mb/s SD
Reclocking DA
DDA-3312
270Mb/s ASI/SDI Path Protection DA
ZDA-4311RH
Double Rear Assembly for Handshaking 2 x
DDA-3312's
DDA-4006 270 Mb/s ASI/SDI
8 O/P Distribution Amplifier
Features
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For use as
buffer or distribution amplifier.
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8 x in-phase 270
Mb/s ASI or SDI non reclocked outputs.
-
Automatic input
equalisation to 250 metres.
-
Automatic output
muting on no input.
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Front panel
monitoring output, signal presence LED and
external alarm contacts.
-
Optional plug-in
SNMP monitoring module.
General
The DDA-4006
270 Mb/s serial digital video distribution
amplifier provides the user with a single
standard module to cover a wide range of
distribution and monitoring functions for ASI or
SDI signals.
The DDA-4006
supersedes the DVA-3006 and provides all of its
predecessor's functions together with the added
option of a Simple Network Management Protocol
(SNMP) monitoring module for use with IRT's SNMP
system frame.
Due to the fact
that standard loop through techniques used in
the analogue domain are unsuitable to the
digital domain most digital equipment comes with
no facility to route the input signal to other
locations. As a result a DA is required at
almost every point in the digital chain.
Serial digital signals also suffer severe
deterioration over relatively short cable
distances. The DDA-4006 provides a means of
extending the working distances that can be
achieved by equalising and retransmitting the
data mid route.
The DDA-4006
may also be used to provide input equalisation
for devices not having this feature, as most
unequalised inputs will only support cable
lengths of less than 20 metres.
Frequent re-clocking of serial digital signals
can lead to serious increases in jitter with
resultant data errors. The DDA-4006 does not
include re-clocking so as to minimise these
errors, leaving re-clocking to be done by the
receiving device. For applications requiring
reclocking the DDA-4007 should be used.
An optional rear
assembly, ZDA-4006RL (sold separately), provides
a bypass relay to switch the Input (SK1) to
Output 1 (SK2) in the event of a power failure.
When this bypass rear assembly is used, number
of outputs is reduced to 6.
The DDA-4006 is designed to fit IRT's Standard
Eurocard frame as well as IRT's 4000 series
frame for use with IRT's SNMP system and may be
used alongside any other of IRT's analogue or
digital Eurocards
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DDA-4007
270 Mb/s
ASI/SDI 8 O/P Reclocking Distribution Amplifier
Features
-
For use as
buffer or distribution amplifier.
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8 x in-phase 270
Mb/s ASI or SDI reclocked outputs.
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Automatic input
equalisation to 250 metres.
-
Automatic output
muting on no input.
-
Front panel
indicators provide monitoring of presence of
input signal at 270 Mb/s.
-
Optional plug-in
SNMP monitoring module
General
The DDA-4007
270 Mb/s serial digital video distribution
amplifier provides the user with a single
standard module to cover a wide range of
distribution and monitoring functions for SDI or
ASI signals.
The DDA-4007 supersedes the DVA-3007 and
provides all of its predecessor's functions
together with the added option of a Simple
Network Management Protocol (SNMP) monitoring
module for use with IRT's SNMP system frame.
Due to the fact that standard loop through
techniques used in the analogue domain are
unsuitable to the digital domain most digital
equipment comes with no facility to route the
input signal to other locations. As a result a
VDA is required at almost every point in the
digital chain.
Serial digital signals also suffer severe
deterioration over relatively short cable
distances. The DDA-4007 provides a means of
extending the working distances that can be
achieved by equalising.
Where a large
number of reclocked outputs are required the
DDA-4007 may be used to provide reclocking and
its outputs fed to one or more non reclocking
DA's to provide the number of outputs required.
This provides a more economic solution than
using multiple reclocking DA's and minimises
jitter increase due to unnecessary re-clocking.
An optional rear
assembly, ZDA-4006RL (sold separately), provides
a bypass relay to switch the Input (SK1) to
Output 1 (SK2) in the event of a power failure.
When this bypass rear assembly is used, the
number of outputs is reduced to 6.
The DDA-4007 is
designed to fit IRT's standard Eurocard frames
as well as IRT's 4000 series frame for use with
IRT's SNMP system and may be used alongside any
other of IRT's analogue or digital Eurocards.
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DDA-4900 Dual 1 In,
3 Out 270 Mb/s SDI/ASI Distribution Amplifier
(non reclocking)
Features
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3 non inverting
outputs on each amplifier.
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Power fail
signal bypass.
-
Automatic input
equalisation to 250 metres.
-
Low jitter on
the output, <0.1UI when equalising 100m of
cable.
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Automatic output
muting on no input.
-
Front panel
signal presence LEDs and external alarm
contacts.
-
Optional plug-in
SNMP monitoring module.
General
The DDA-4900 270
Mb/s serial digital video distribution amplifier
provides the user with a single standard module
to cover a wide range of distribution and
monitoring functions for ASI or SDI signals. Two
triple output distribution amplifiers are
provided on the one card. Signal bypass relays
automatically switch the inputs to one of their
outputs in the event of loss of power.
Due to the fact that standard loop through
techniques used in the analogue domain are
unsuitable to the digital domain most digital
equipment comes with no facility to route the
input signal to other locations. As a result a
DA is required at almost every point in the
digital chain.
Serial digital
signals also suffer severe deterioration over
relatively short cable distances. The DDA-4900
provides a means of extending the working
distances that can be achieved by equalising and
retransmitting the data mid route.
The DDA-4900 may
also be used to provide input equalisation for
devices not having this feature, as most
unequalised inputs will only support cable
lengths of less than 20 metres.
Frequent
re-clocking of serial digital signals can lead
to serious increases in jitter with resultant
data errors. The DDA-4900 does not include
re-clocking, which minimises these errors,
leaving re-clocking to be done by the receiving
device. For applications requiring reclocking
the DDA-4007
should be used.
To provide for the
polarity sensitive nature of ASI signals, all
outputs of the DDA-4900 are in phase with the
input.
An optional SNMP (Simple Network Management
Protocol) plug-in module is available for
monitoring when used in conjunction with IRT's
4000 series frame fitted with SNMP capability.
The DDA-4900 is a
Eurocard module designed to fit IRT's standard
Eurocard frames as well as IRT's 4000 series
frames for use with IRT's SNMP system and may be
used alongside any other of IRT's analogue or
digital Eurocards.
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DVC-4112 270
Mb/s SDI to Composite Converter & DA
Features
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Broadcast
quality, full 10-bit video conversion.
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4 Equalised,
regenerated and re-clocked repeater outputs.
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3 Composite
analogue outputs with high quality 10 bit
D/A.
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Component (RGB,
YPbPr) or S-Video (Y/C) output.
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PAL or NTSC
operation with auto or manual switching.
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SDI input loss
and decoded video indicators on front panel.
-
Simple Network
Management Protocol (SNMP) capability
General
The DVC-4112 is
a high performance SDI 270 Mbit/s serial digital
video to analogue composite/component converter
and distribution amplifier.
The DVC-4112 is designed to regenerate a link
and provide a broadcast quality analogue
composite or component signal.
The serial receiver section, shown in the block
diagram above, automatically equalises and
re-clocks the input serial video signal and the
cable driver section retransmits the regenerated
serial video.
This configuration allows both an extension of
the link and a jitter performance advantage over
non re-clocking regenerators.
The DVC-4112 is primarily intended to operate in
mixed (digital and analogue) environments
allowing existing analogue monitoring equipment
to be utilised without the need to purchase more
expensive digital equipment.
The DVC-4112
provides component outputs for most
requirements: RGB, YPbPr and S-VHS (Luma +
Chroma). Three composite outputs are always
available plus a choice of one of the remaining
component formats.
Full 10 bit video processing and 10-bit digital
to analogue converters are used in order to
assure a high quality analogue signal suitable
for broadcast and production monitoring
applications.
Simple Network Management Protocol (SNMP)
monitoring is possible if mounted in IRT's 4000
series frame fitted with SNMP capability.
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HDA-4500 1.485 Gb/s
HD 6 O/P Distribution Amplifier
Features
Applications:
-
Link selectable
for either High Definition or Standard
Definition digital signals
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6 non reclocked
outputs
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Automatic input
equalisation
-
Signal presence
LED and external relay alarm contact
-
Optional plug-in
SNMP monitoring module
General
The HDA-4500 1.485 Gb/s serial digital video
distribution amplifier provides the user with a
single standard module to cover a wide range of
distribution and monitoring functions for High
Definition (HD) digital signals.
As well as accepting an HD signal, the HDA-4500
will also accept Standard Definition (SD) rates
such as SDI. ASI is also possible, however as
three of the six outputs are inverted only the
non-inverted output ports are suitable for ASI.
Serial digital signals suffer severe
deterioration over relatively short cable
distances. This is especially so with the HD
high data rate. The HDA-4500 provides a means of
extending the working distances that can be
achieved by equalising and re-transmitting the
data mid route.
An on board link sets whether the HDA-4500 will
accept a either 1.485 Gb/s HD signal or a lower
rate SD signal by adjusting the output driver
slew rate to
suit.
Front panel LEDs indicate when an input signal
is present and also whether the on board link is
set for HD or SD operation.
A relay alarm output, with a selectable N/O or
N/C switch to ground contact, is available for
indication of loss of input signal or loss of
power.
An optional SNMP (Simple Network Management
Protocol) plug in module is available for remote
monitoring when used in conjunction with IRT's
4000 series frame fitted with SNMP capability.
The HDA-4500 is designed to fit IRT's 4000
series frame for use with IRT's SNMP system as
well as being suitable with IRT's Standard 1000
and 3000 series Eurocard frames and may be used
alongside any other of IRT's analogue or digital
Eurocards.
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HDA-4510
1.485 Gb/s HD 6 O/P Reclocking Distribution
Amplifier
Features
Applications:
-
Automatic
selection of either High Definition or
Standard Definition digital signals
-
6 reclocked
outputs
-
Automatic input
equalisation
-
Locked signal
presence LED and external relay alarm
contact
-
Optional plug-in
SNMP monitoring module
General
The HDA-4510 1.485 Gb/s serial digital video
reclocking distribution amplifier provides the
user with a single standard module to cover a
wide range of distribution and monitoring
functions for High Definition (HD) digital
signals.
As well as accepting an HD signal, the HDA-4510
will also accept Standard Definition (SD) rates
such as SDI. ASI is also possible, however as
three of the six outputs are inverted only the
non-inverted output ports are suitable for ASI.
Serial digital signals suffer severe
deterioration over relatively short cable
distances. This is especially so with the HD
high data rate. The HDA-4510 provides a means of
extending the working distances that can be
achieved by equalising and re-transmitting the
data mid route.
The HDA-4510 will automatically reclock either a
1.485 Gb/s HD signal or a lower rate SD signal
and automatically adjust the output driver slew
rate to suit.
Front panel LEDs indicate when an input signal
is present and also whether it is either an HD
or SD type of signal.
A relay alarm output, with a selectable N/O or
N/C switch to ground contact, is available for
indication of loss of input signal or loss of
power.
An optional SNMP (Simple Network Management
Protocol) plug in module is available for remote
monitoring when used in conjunction with IRT's
4000 series frame fitted with SNMP capability.
The HDA-4510 is designed to fit IRT's 4000
series frame for use with IRT's SNMP system as
well as being suitable with IRT's Standard 1000
and 3000 series Eurocard frames and may be used
alongside any other of IRT's analogue or digital
Eurocards.
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HDA-4521 Dual 1 In,
3 Out HD/SD Reclocking Distribution Amplifier
Features
-
3 non inverting
outputs on each amplifier.
-
Link selectable
for 1 in, 6 out single distribution
amplifier operation.
-
3 Automatic
reclocking of High Definition or Standard
Definition digital signals.
-
Input
equalisation > 100 m for HD, > 250 m for SD.
-
Automatic output
muting on no input.
-
Front panel
signal presence LEDs and external alarm
contacts.
-
Optional plug-in
SNMP monitoring module.
General
The HDA-4521
HD/SD dual serial digital reclocking video
distribution amplifier provides the user
with a single standard module to cover a
wide range of distribution and monitoring
functions for High Definition (HD) and/or
Standard Definition (SD) digital signals.
Two triple output reclocking distribution
amplifiers are provided on the one card.
As well as accepting HD or SD signals, the
HDA-4521 will also accept ASI signals. To
provide for the ploarity sensitive nature of
ASI signals, all outputs of the HDA-4521 are
in phase with the inputs.
Serial digital
signals suffer severe deterioration over
relatively short cable distances. This is
especially so with the HD high data rate.
The HDA-4521 provides a means of extending
the working distances that can be achieved
by equalising and retransmitting the data
mid route.
The HDA-4521
will automatically reclock either 1.485Gb/s
HD signals or lower rate 270Mb/s SD signals.
Both sides of the HDA-4521 can be run
independently allowing a mixture of signal
types to be used.
On board link
settings allow either of the inputs to feed
all outputs to create a one in, six out
distribution amplifier.
Front panel
LEDs indicate when an input signal is
present and whether the output is an HD or
SD type.
Separate alarm
outputs switch to ground for indication of
loss of input signal or loss of power.
An optional SNMP (Simple Network Management
Protocol) plug in module is available for
remote monitoring and control when used in
conjunction with IRT's 4000 series frame
fitted with SNMP capability. Extra features
are available via SNMP such as automatic
switching on loss of one input to the other
input.
The HDA-4521
is designed to fit IRT's 4000 series 3RU
frames for use with IRT's SNMP system as
well as being suitable with IRT's 1000
series 1RU Eurocard frames and may be used
alongside any other of IRT's Eurocards.
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DDA-3312ASI/SDI Path Protection Amplifier
Features
-
SDI & DVB-ASI compliant.
- Adaptive cable input
equalisation.
- Data regeneration.
- Polarity alarm and
inversion capability for ASI.
- Protection switching
capability.
- Power fail signal
bypass.
- External Alarms.
- Compatible with other
IRT Eurocard modules and frames
General
The
DDA-3312 is a data distribution amplifier that may be used
with either ASI or SMPTE SDI 270 Mb/s signals.
Four outputs are provided at the rear of the module with an
additional output for monitoring purposes on the front
panel. The primary output is controlled by relays to provide
a bypass signal from the input during a power failure.
The DDA-3312 incorporates a protection facility for
switching two outputs to signals from a companion DDA-3312
when a fault is detected.
In SDI mode a loss of input or
EAV is used to indicate failure.
In ASI mode a loss of input or
absence of 188/204 byte packet sync is used.
In both modes an overriding
changeover request may be made either locally or by remote
control.Indicators
are provided on the front panel for:
SDI signal detected
ASI signal detected
ASI signal inverted
Data loss
Module in service
Module in standby
External alarm signals are
also available on the rear of the module.
Changeover-inhibit and changeover-request switches are
provided on the front panel for use where modules are linked
in pairs for redundancy.
For this configuration, a special double width rear assembly
(type ZDA-4311RH) is required to link the signal and logic
sections of two modules
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ZDA-4311RH
Handshake
connection - ASI / SDI Data Amplifiers
Features
-
Redundant pair operation.
- Protection switching facility.
- External alarms from each
module.
- One output bypass on power
loss.
General
The DDA-3312 is an
ASI / SDI data distribution amplifier that incorporates a protection
switching facility for the switching in of signals from a standby
module when a fault is detected.
To facilitate this mode of operation, the ZDA-4311RH provides all of
the required signal and logic interconnections between two modules.
The individual module alarms are also provided for remote monitoring
purposes.Two switched outputs are provided at the rear of the module
with two additional outputs for monitoring purposes on each module.
The primary output is controlled by relays to provide a bypass
signal from the input during a power failure.
Changeover-inhibit and changeover-request switches are provided on
the front panel for local manual control. |
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