IRT Electronics DDA-4007 User Manual

4007-dda.ib.rev1.doc Page 1 of 12 15/09/2008

IRT Eurocard Type

DDA-4007

270 Mb/s ASI/SDI 8 O/P

Reclocking 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: [phone] Fax: [phone]
International: [phone] [phone]
Email: [e-mail]
Web: www.irtelectronics.com

4007-dda.ib.rev1.doc Page 2 of 12 15/09/2008

DDA-4007

270 Mb/s ASI/SDI 8 O/P

Reclocking Distribution Amplifier

Instruction Manual

Table of Contents

Section Page

Operational Safety 2
General Description 3
Technical Specifications 4
Installation 5

Link Settings 5
Digital Video Connections 5
Front Panel Indicators 5
SMU-4000 Installation 6

Figure 1: SMU-4000 module 6

Front & rear panel connector diagrams 7

SNMP – What Is It? 8

DDA-4007 SNMP Functions 10
Maintenance & Storage 11
Warranty and Service 11

Equipment return 11
Drawing Index 12

This instruction manual applies to DDA-4007 later than S/N 0809051

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.

4007-dda.ib.rev1.doc Page 3 of 12 15/09/2008

DDA-4007

270 Mb/s ASI/SDI 8 O/P

Reclocking Distribution Amplifier

General Description

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.

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, reclocking and re-transmitting the
data mid route.

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.

The rear assembly now includes a bypass relay, to switch the Input (SK1) to Output 1 (SK2) in the event of a power
failure, as standard.

An optional Simple Network Management Protocol (SNMP) plug-in module is available for remote monitoring of
input status and alarm state.

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.

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.

• Relay bypass on loss of power.

• Front panel indicators provide monitoring of presence of input signal at 270 Mb/s.

• Optional plug-in SNMP monitoring module.

O/P 2
O/P 3
O/P 4
O/P 5
O/P 6
O/P 7
O/P 8

OUTPUTS

EQUALISER

RECLOCKING

SIGNAL FAIL

DETECTION

INPUT

Relay RL 1 = Output Alarm

LINK

ALARM O/P

RL 1

BLOCK DIAGRAM DDA-4007 SIGNAL PATH

O/P 1

MON O/P

Relay Bypass on loss of power

RL1

SNMP

4007-dda.ib.rev1.doc Page 4 of 12 15/09/2008

Technical Specifications

DDA-4007

Video input:

Number 1.
Impedance 75 Ω.
Return loss >15 dB 5 MHz to 270 MHz.
Equalisation Automatic, better than 250 metres at 270 Mb/s for Belden 8281 or equivalent cable

(reduces to approx. 200m when LK2 is closed).

Video outputs:

Number 8 ASI or SDI plus one front panel monitoring output.
Type Reclocked.
Level 800 mV ±10% into 75 Ω.
Impedance 75 Ω.
Return loss >15 dB 5 MHz to 270 MHz.
DC offset Nil.

Performance:

Reclocking Factory set for 270 Mb/s operation.
Rise time <1.0 ns, (700 ps typically).

Residual jitter <0.1 UI (measured with up to 300m of Belden 8281 or equivalent cable).

Connectors: BNC 75 Ohms.
Indicators:

Power LED (green) for +5 V.
Signal present LED (green) when signal present.

Alarm:

Signal loss Contact closure. Link selectable NO/NC.

Power requirement:

Voltage 28 Vac CT (14-0-14) or ±16 Vdc
Consumption 2.5 VA

Other:

Temperature range 0 - 50° C ambient.
Mechanical Suitable for mounting in IRT 19" rack chassis with input, output and power

connections on the rear panel.
Finish: Front panel Grey background, black lettering & red IRT logo.
Rear assembly Detachable silk-screened PCB with direct mount connectors to Eurocard and

external signals.
Dimensions 6 HP x 3 U x 220 mm IRT Eurocard.
Standard accessories Rear connector assembly with matching connector for alarm output.
Optional accessories SMU-4000 SNMP plug-in module for use with 4000 series frame fitted with SNMP

“Agent”.

Due to our policy of continuing development, these specifications are subject to change without notice.

4007-dda.ib.rev1.doc Page 5 of 12 15/09/2008

Installation

Pre-installation:

Handling:

This equipment may contain or be connected to static sensitive devices and proper static free handling precautions
should be observed.

Where individual circuit cards are stored, they should be placed in antistatic bags. Proper antistatic procedures
should be followed when inserting or removing cards from these bags.

Power:

AC mains supply: Ensure that operating voltage of unit and local supply voltage match and that correct rating

fuse is installed for local supply.

DC supply: Ensure that the correct polarity is observed and that DC supply voltage is maintained within

the operating range specified.

Earthing:

The earth path is dependent on the type of frame selected. In every case particular care should be taken to ensure
that the frame is connected to earth for safety reasons. See frame manual for details.

Signal earth: For safety reasons a connection is made between signal earth and chassis earth. No attempt should be
made to break this connection.

Installation in frame or chassis:

See details in separate manual for selected frame type.

Link Settings:

LK1 is factory set for a contact make

to ground on signal failure at SK10 pin 2 on the rear panel, move LK1 from

the normally closed (N/C) to the normally open (N/O) position for a break to ground on signal or power loss.

Link LK2 closed reduces the input equalisation to 200m for use in noisy environments or when a short input cable
is used.

Digital Video Connections:

Input and outputs are 75 Ω BNC type for connection with high quality 75 Ω coaxial cable. Input is self-terminating.

Front Panel Indicators:

The presence of 270 Mb/s locked signal is indicated by the ‘SIGNAL PRESENT’ front panel LED (green).

The presence of the internal +5 Vdc supply is indicated by the front panel LED (green).

4007-dda.ib.rev1.doc Page 6 of 12 15/09/2008

SMU-4000 Installation

The SMU-4000 plug-in SNMP management controller module can only be fitted to IRT’s 4000 series modules that
are capable of being SNMP upgradeable. To determine whether a module is SNMP upgradeable, a square section
on the main PCB is silk screened and fitted with three multipin sockets – as shown below:

This is where the SMU-4000 plug-in SNMP management controller module is fitted. The three sets of multipins on
the underside of the SMU-4000 line up with the three sets of multipin sockets on the main PCB module. Align all
pins and then gently press the SMU-4000 all the way down into place.

If the SMU-4000 is not already programmed with the correct firmware to match the module that it is being plugged
into, it then needs to be programmed via the pins on the topside of the SMU-4000.

Note that installation will generally be done by IRT Electronics at the time of ordering.

Note also that an SMU-4000 will only be functionally operational when the main module that it is plugged into is
fitted into an IRT 4000 series frame fitted with a CDM-4000 SNMP agent and being interrogated by a suitable
Network Management System.

1J2

1J1 1J3

Figure 1: SMU-4000 module

4007-dda.ib.rev1.doc Page 7 of 12 15/09/2008

SIGNAL

PRESENT

OUTPUT MON

DC

DDA-4007

N140

Front & rear panel connector diagrams

The following front panel and rear assembly drawings are not to scale and are intended to show relative positions of
connectors, indicators and controls only.

SK10 2 = Alarm
SK10 1 = Gnd

2
1

SK10

OUTPUTS

PL 5 OUT

INPUT

SK8

PL2

SK2

SK7

SK6

SK4

SK3

SK5

PL1

SK9

SK1

POWER OFF

BYPASS
SK1-SK2

4007-dda.ib.rev1.doc Page 8 of 12 15/09/2008

SNMP

What Is It?

SNMP stands for Simple Network Management Protocol. It is an application layer protocol for managing IP
(Internet Protocol) based systems. SNMP enables system administrators to manage system performance, and to find
and solve system problems. SNMP runs over UDP (User Datagram Protocol), which in turn runs over IP.

Three types of SNMP exist: SNMP version 1 (SNMPv1), SNMP version 2 (SNMPv2) and SNMP version 3
(SNMPv3). It is not the intention here to discuss the differences between various versions, only to bring attention to
the fact that IRT Electronics modules, fitted with SNMP capability, use SNMPv1.

An SNMP managed network consists of three key components: Network Management Systems (NMS), agents, and
managed devices.

An NMS is the console through which the network administrator performs network management functions, such as
monitoring status (e.g. alarm states) and remote controlling, of a set of managed devices. One or more NMSs must
exist on any managed network. Generally the NMS is a computer running third party SNMP control software. There
are a number of third party SNMP software applications currently available on the market.

An NMS polls, or communicates with, an agent. An agent is a network management software module that resides in
a managed device. An agent has local knowledge of management information and translates that information into a
form compatible with SNMP. The agent, therefore, acts as an interface between the NMS and the managed devices.
The NMS sends a request message, and control commands for the managed devices, to the agent, which in turn
sends a response message, containing information about the managed devices, back to the NMS.

A managed device contains an SNMP agent and resides on a managed network. Managed devices collect and store
management information and make this information available to NMSs using SNMP.

Managed device agent variables are organised in a tree structure known as a Management Information Base (MIB).
Within the MIB are parameters pertaining to the managed device. An Object Identifier (OID) number within the
MIB defines the managed device type. This is a unique number specific to the model of managed device. Other
information relating to the device is also stored, information such as alarm states, controllable settings, etc. The MIB
tree is organised in such a way that there will be no two MIB files with conflicting placements.

Normally an NMS polls an agent for information relating to the MIB in a managed device to be sent back to the
NMS. When certain conditions are met within the MIB, such as major alarm conditions, for example, the agent
automatically sends what is known as a trap to the NMS without any prompting from the NMS. This allows
automatic notification of a predetermined event.

NMS

NMS

IP
Network

MIB

SNMP Agent
Protocol Engine

SNMP Agent

MIB

SNMP Agent
Protocol Engine

SNMP Agent

MIB

SNMP Agent
Protocol Engine

SNMP Agent

SNMP Block Diagram

4007-dda.ib.rev1.doc Page 9 of 12 15/09/2008

SNMP with IRT Products

IRT Electronics currently employs SNMPv1 with its 4000 series frame. The frame acts as an agent when fitted with
a CDM-4000 module. This module has its own designated slot next to the power supply so as to not affect the
number of modules that the frame will take. Communication between the NMS, the frame and its loaded modules
are via this CDM-4000 module. Note that the NMS software is third party and not supplied by IRT Electronics.

Ethernet connection for SNMP operation is via an RJ45 connector on the rear of the frame, below the mains inlet.
Ethernet rate runs at either 10 baseT or 100 baseT.

Frame parameters, such as Name, Address and Location, are set via an RS232 interface, a D9 connector on the rear
of the frame below the mains inlet. A software terminal emulator, such as Tera Term or HyperTerminal, is used for
setting and reading the parameters of the frame.

IRT modules that are SNMP compatible need a plug-in SMU-4000 module with a program relevant to the module
that it is plugged into. Depending on the module, besides the module identification, parameters such as alarm states,
inputs and controls etc. are communicated to the CDM-4000 agent via a data bus on the rear of the frame. Thus the
CDM-4000 collects information on what is loaded within the frame, what positions they occupy, and their current
status for communication to the NMS when the NMS sends a request for information.

In the event of a major alarm from any of the SNMP compatible modules, or power supplies, a trap is automatically
sent by the CDM-4000 agent to the NMS without any prompting by the NMS. This alerts the operator to any fault
conditions that may exist that need immediate attention.

FRU-4000

FRAME

110/240 V 50/60 Hz

0.7 A (max.)

FUSES

110/120 Vac

1A S.B.

220/240 Vac

500 mA S.B.

AS3260 approval no.: CS6346N
Ass. no.: 804692

+

-

48Vdc

Alarm

RS232

Ethernet

IRT SNMP Connections

IRT modules fitted

with SMU-4000

PSU’s

CDM-4000

IRT 4000 Series Frame

IRT 4000 Series Frame

IRT modules fitted

with SMU-4000

PSU’s

CDM-4000

IP

Network

Ethernet Cable

Ethernet Cable

Ethernet Cable

NMS

IRT 4000 Series SNMP Setu

p

4007-dda.ib.rev1.doc Page 10 of 12 15/09/2008

DDA-4007 SNMP Functions:

With the DDA-4007 fitted with the optional plug-in SMU-4000 SNMP module, programmed with firmware to suit,
and installed in an IRT 4000 series frame with SNMP capability, it is possible to remotely monitor the presence of
an input and the state of the urgent alarm using an NMS. Traps can also be set for whenever an urgent alarm occurs
or clears.

4007-dda.ib.rev1.doc Page 11 of 12 15/09/2008

Maintenance & Storage

Maintenance:

No regular maintenance is required.

Care however should be taken to ensure that all connectors are kept clean and free from contamination of any kind.
This is especially important in fibre optic equipment where cleanliness of optical connections is critical to
performance.

Storage:

If the equipment is not to be used for an extended period, it is recommended the whole unit be placed in a sealed
plastic bag to prevent dust contamination. In areas of high humidity a suitably sized bag of silica gel should be
included to deter corrosion.

Where individual circuit cards are stored, they should be placed in antistatic bags. Proper antistatic procedures
should be followed when inserting or removing cards from these bags.

Warranty & Service

Equipment is covered by a limited warranty period of three years from date of first delivery unless contrary
conditions apply under a particular contract of supply. For situations when “No Fault Found” for repairs, a
minimum charge of 1 hour’s labour, at IRT’s current labour charge rate, will apply, whether the equipment is within
the warranty period or not.

Equipment warranty is limited to faults attributable to defects in original design or manufacture. Warranty on
components shall be extended by IRT only to the extent obtainable from the component supplier.

Equipment return:

Before arranging service, ensure that the fault is in the unit to be serviced and not in associated equipment. If
possible, confirm this by substitution.

Before returning equipment contact should be made with IRT or your local agent to determine whether the
equipment can be serviced in the field or should be returned for repair.

The equipment should be properly packed for return observing antistatic procedures.

The following information should accompany the unit to be returned:

1. A fault report should be included indicating the nature of the fault

2. The operating conditions under which the fault initially occurred.

3. Any additional information, which may be of assistance in fault location and remedy.

4. A contact name and telephone and fax numbers.

5. Details of payment method for items not covered by warranty.

6. Full return address.

7. For situations when “No Fault Found” for repairs, a minimum charge of 1 hour’s labour will apply,

whether the equipment is within the warranty period or not. Contact IRT for current hourly rate.

Please note that all freight charges are the responsibility of the customer.

The equipment should be returned to the agent who originally supplied the equipment or, where this is not
possible, to IRT direct as follows.

Equipment Service
IRT Electronics Pty Ltd
26 Hotham Parade
ARTARMON
N.S.W. 2064
AUSTRALIA

Phone: [phone] Fax: [phone]
Email: [e-mail]

4007-dda.ib.rev1.doc Page 12 of 12 15/09/2008

Drawing Index

Note: Components marked n/c on the diagrams are optional and are not included on standard production units. They
are shown to assist with interpretation of additional or optional functions, which may be included or are necessary
for factory set-up procedures.

Drawing # Sheet # Description

804959 1 DDA-4007 Circuit Schematic

Title

SCALE

SIZE

Sheet

DRAWN

CHECKED

ENG. APP.

Revision:

DO NOT COPY NOR

DISCLOSE TO ANY

THIRD PARTY

WITHOUT WRITTEN

CONSENT

of1

IRT Electronics Pty. Ltd.

Drawing No.

COPYRIGHT

ARTARMON NSW AUSTRALIA 2064

A3

N.T.S.

4

DDA-4007

804959

Date:

2

15-Sep-2008

SDI/ASI Distribution Amplifier

K.N.

Input

Output 8

Output 7

Output 1

Output 6

Output 2

Output 5

Output 4

Output 3Signal Detect

Monitor O/P

Input Equaliser and Output Drivers

804959i2s2.sch

AC 1

AC 4

AC 2

AC 3

Power Supply Circuit

804959i2s3.sch

3 1

2

LK1

'DC'

'grn'

21

R40

560R

n.c.

n.o.

1A1B2A2B3A3B4A4B5A6A6B7A7B8A8B

10A

10B5B11A

11B

12A

12B

13A

13B

14A

15A

15B

17A

17B

18A

18B

9A

9B

20A

20B

14B

21A

21B

22A

22B

23A

24B

24A

25B

26A

27A

27B

28A

23B

19A

19B

30A

30B

26B

31A

31B

32A

32B

25A

16A

16B

28B

29A

29B

P1

DIN64RA

21

LD1

HLMP-1503

1 13-07-2004

PCB 804960

21

R38

4K7

1 2

C36

100nF

+5V

+5V

MON. O/P

SK101

'SIGNAL'

'grn'

21

R39

560R

21

LD2

HLMP-1503

+5V

ALARM CIRCUIT

CONTACT CLOSURE (OR BREAK)

TO GROUND ON ALARM, AS SET BY LK1

32

1

Q1

BSS123

1 2

C37

4u7

R1-R9 = 220R

L1-L9 = 15nH

38

RL1A

V23026

10

1

5

RL1B

+5V

1 2

F5

RXE020

POLYFUSE

1 3

2

D3

BAS16

12

C45

10nF

1 2

C46

10nF

ALARM

RX

TX

SIGNAL

RELAY RA

Control Interface

804959i2s4.sch

GNDA

1 2

C47

10nF

2 03-04-2008 ECR1855

J2 optional power in

(used when fitted to FRU-1030 frame)

1A1B2A2B3A3B4A4B5A6A6B7A7B8A8B

10A

10B5B11A

11B

12A

12B

13A

13B

14A

15A

15B

17A

17B

18A

18B

9A

9B

20A

20B

14B

21A

21B

22A

22B

23A

24B

24A

25B

26A

27A

27B

28A

23B

19A

19B

30A

30B

26B

31A

31B

32A

32B

25A

16A

16B

28B

29A

29B

J1

DIN64

OUTPUTS

1 2

L9

1 2

L8

1 2

L7

1 2

L5

1 2

L3

1 2

L2

1 2

L10 18nH

INPUT

21

R9

21

R8

21

R5

21

R7

21

R3

21

R2

21

R10 33R

SK1

SK2

SK3

SK5

SK7

S8

S9

2

1

SK10

123

J2

1 2

3 4

5 6

P3

13579

P2

TX RX

1

3

2

45

7
6

8

RL1

RELAY G6K-2F-RF

1 2

L1

21

R1

1 2

L11 18nH

21

R11 220R

1 2

L421R4

SK4

1 2

L621R6

SK6

J1/32A

J1/32A

2 1

R35A

SFR16T-27R