Encoding and video processing

Analogue A/V Products

Digital A/V Products

DIGITAL A/V PRODUCTS Digital Video

DVJ-3000 270 Mb/s ASI/SDI De-Jitteriser
DDA-3312 270Mb/s ASI/SDI Path Protection DA

ZDA-4311RH    Double Rear Assembly for Handshaking 2 x DDA-3312's
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
DVC-4360    Composite/Component PAL/NTSC to SDI Converter
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 Digital Reclocking DA

DVG-4090 SDI/Composite Test Pattern Generator with Crash Switching
DVG-4900 270Mb/s SMPTE-259 SDI Video Source

DVJ-3000 270 Mb/s SDI/ASI De-Jitteriser

Features

Reduces jitter in build-up in distribution chains.
Suitable for 270 Mb/s SDI or ASI signals.
Automatic input equalisation to >300 metres.
Automatic output muting and alarm out on no input.
Front panel output monitoring

General

The DVJ-3000 is designed to reduce the jitter in 270 Mb/s SDI or ASI signals.
Due to the fact that true loop through inputs are not normally available in most digital equipment, the signal is frequently subject to automatic equalisation and reclocking.
Together with noise pickup this leads to an inevitable increase in jitter in the signal.
The only successful way to overcome this is to regenerate the signal with a new clock signal referenced to the long-term data rate.
The DVJ-3000 provides this solution with a Voltage Controlled Crystal Oscillator (VCXO) operating in conjunction with a First In First Out (FIFO) memory to provide a constant output data rate, which removes any short-term data rate errors.Up to twelve DVJ-3000�s or other Eurocard modules may be housed in one 3 RU frame.
The DVJ-3000 supports redundant power supply inputs.

For input jitter within this mask, output jitter < 0.125 UI.

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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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DDA-4006 270 Mb/s ASI/SDI 8 O/P Distribution Amplifier

Features

For use as buffer or distribution amplifier.
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.
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.
8 x in-phase 270 Mb/s ASI or SDI reclocked outputs.
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

3 non inverting outputs on each amplifier.
Power fail signal bypass.
Automatic input equalisation to 250 metres.
Low jitter on the output, <0.1UI when equalising 100m of cable.
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

Broadcast quality, full 10-bit video conversion.
4 Equalised, regenerated and re-clocked repeater outputs.
3 Composite analogue outputs with high quality 10 bit D/A.
Component (RGB, YPbPr) or S-Video (Y/C) output.
PAL or NTSC operation with auto or manual switching.
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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DVC-4360 Composite to 270 Mb/s SDI

Features

Broadcast quality, full 12-bit video conversion.
2 SDI 270 Mbit/s outputs.
2 AES or 4 Analogue Audio Inputs.
PAL or NTSC operation with auto switching.
Video input indicator on front panel.
Standard IRT Eurocard format may be mixed with other IRT analogue and digital Eurocards in the same frame.

General

The DVC-4360 is a high performance PAL / NTSC composite to 270 Mbit/s serial digital (SDI) video converter, complete with analogue or AES audio insertion.
The DVC-4360 provides two SDI outputs.
Audio channel allocation and source selection is provided by links on the main board.
The DVC-4360 is designed to provide a broadcast quality composite to SDI conversion using the latest digital filtering techniques.
The composite input section, shown in the block diagram above, automatically detects the composite input standard (PAL or NTSC) and generates the appropriate 625 or 525 SDI format.

Link settings are provided for default output on signal loss. This is either blue or black in 625 or 525.
Full 12 bit video processing and 20-bit analogue to digital audio converters are used in order to assure a high quality SDI signals suitable for broadcast and production monitoring applications.
The DVC-4360 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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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
6 non reclocked outputs
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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DVG-4090 SDI / Composite Test Pattern Generator with Crash Switching

Features

Applications:

SDI or Composite PAL/NTSC operation.
Choice of 16 Test Patterns on loss of video input.
Choice of 8 banners overlaid or keyed onto SDI input or Test Pattern output.
Simple Network Management Protocol (SNMP) capability. (Future)

General

The DVG-4090 acts as a video crash switcher and test pattern generator. On loss of video input, output is automatically switched to a choice of 16 test patterns.
8 custom built banners containing text or pictures, such as station logos, and 2 full screen pictures can be downloaded by supplied software. Single banners can be overlaid or keyed onto the test pattern output in the lower section of the video picture. In the case of an SDI input, these banners can also be overlaid onto the existing stream.

A countdown banner and audio test signal insertion is also available for link identification purposes.
Two rear assemblies are supplied for analogue and digital video input operation, however both rear assemblies contain both composite and SDI outputs.
The DVG-4090 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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DVG-4900 270 Mb/s SMPTE-259 SDI Video Source

Features

PAL or NTSC operation.
Colour Bars or Black video signal.
Signal loss indication on Alarm Contacts.
Optional plug-in SNMP monitoring and control modul

General

The DVG-4900 is designed to provide a stable 270 Mb/s video source for use in locations where a SDI video signal is needed to provide signal continuity or where a reference is required for audio insertion onto a 270 Mb/s signal path.
The DVG-4900 finds particular use in installations as a test signal for connectivity and operation of SDI video paths. The unit can be set for either PAL or NTSC applications outputting either 75% Colour Bars or Black field.
The DVG-4900 also provides a suitable base signal for embedding audio using an audio inserter, such as IRT's DAI-3206 audio inserter, for transmitting audio down a 270 Mb/s path.

An optional Simple Network Management Protocol (SNMP) plug-in module is available for remote control and monitoring of output and alarm states.
The DVG-4900 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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