IRT Electronics DVA-3006 Instruction Manual
3006-dva.ib.doc Page 1 of 8 26.02.2003
IRT Eurocard Types
DVA-3006
270 Mb/s ASI/SDI 8 O/P
Distribution Amplifier
Designed and manufactured in Australia
IRT can be found on the Internet at:
http://www.irtelectronics.com
I R T Electronics Pty Ltd A.B.N. 35 000 832 575
26 Hotham Parade, ARTARMON N.S.W. 2064 AUSTRALIA
National: Phone: (02) 9439 3744 Fax: ( 02) 9439 7439
International: +61 2 9439 3744 +61 2 9439 7439
Email: sales@irtelectronics.com
Web: www.irtelectronics.com
IRT Communications
www.irtcommunications.com
3006-dva.ib.doc Page 2 of 8 26.02.2003
DVA-3006
270 Mb/s ASI/SDI 8 O/P
Distribution Amplifier
Instruction Manual
Table of Contents
Section Page
Operational Safety 2
General Description 3
Specifications 4
Technical description 5
Installation 5
Front and rear layouts 6
Maintenance & Storage 7
Warranty and service 7
Equipment return 7
Drawing list index 8
This instruction manual applies to units later than S/N 0303051
Operational Safety:
WARNING
Operation of electronic equipment involves the use of voltages and currents that
may be dangerous to human life. Note that under certain conditions dangerous
potentials may exist in some circuits when power controls are in the OFF position.
Maintenance personnel should observe all safety regulations.
Do not make any adjustments inside equipment with power ON unless proper
precautions are observed. All internal adjustments should only be made by suitably
qualified personnel. All operational adjustments are available externally without
the need for removing covers or use of extender cards.
IRT Communications
www.irtcommunications.com
3006-dva.ib.doc Page 3 of 8 26.02.2003
General Description
The DVA-3006 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.
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 DVA-3006 provides
a means of extending the working distances that can be achieved by equalising and re-transmitting the data in mid
route.
The DVA-3006 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
DVA-3006 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 DVA-3007 should be used.
An optional rear assembly, ZVA-3006RL (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 DVA-3006 may be mounted in IRT’s 1 RU or 3 RU frames with other analogue or digital modules.
Standard Features:
• For use as buffer or distribution amplifier.
• 8 x in phase 270 Mb/s ASI or 143, 177, 270, 360 Mb/s SDI non reclocked outputs.
• Automatic input equalisation to 250 metres.
• Front panel monitoring output, signal presence LED and external alarm contacts.
• Non reclocking design ideal for use in conjunction with reclocking DA to provide
additional outputs.
O/P 2
O/P 3
O/P 4
O/P 5
O/P 6
O/P 7
O/P 8
OUTPUTS
EQUALISER
SIGNAL FAIL
DETECTION
INPUT
Relay RL 1 = Output Alarm
LINK
ALARM O /P
RL 1
BLOCK DIAGRAM DVA-3006 SIGNAL PATH
O/P 1
MON O/P
(Optional ZDA-3006RL Bypass Rear
Assembly)
(Number of outputs reduced to 6)
RL1
IRT Communications
www.irtcommunications.com
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