Nevion 3GHD-CHO-2x3, 3GHD-CHO-2x4-PB, 3GHD-CHO-2x3-G, 3GHD-CHO-2x3-PB-G User Manual

Nevion HQ:

Nevion Europe, P.O. Box 1020, 3204 Sandefjord, Norway

Tel: [phone] – Fax: [phone] – www.nevion.com

3GHD-CHO-2x4/2x3

Multi Rate 3GHD-SDI Distribution Amplifier

with change-over

User manual

Rev. 2

3GHD-CHO-2x4/2x3 Rev. 2

nevion.com | 2

Nevion Support

Nevion Europe
P.O. Box 1020

3204 Sandefjord, Norway
Support phone 1: [phone]
Support phone 2: [phone]

Nevion USA

1600 Emerson Avenue

Oxnard, CA 93033, USA

Toll free North America: [phone]

Outside North America: [phone]

E-mail: [e-mail]

See http://www.nevion.com/support/ for service hours for customer support globally.

Revision history

Current revision of this document is the uppermost in the table below.

Rev.

Repl.

Date

Sign

Change description

2 1 2012-11-19

RB

Updated table 3 - Description of GPI interface:

- GPI “Main/Backup” renamed to “Main”, and
it senses main and not selected input.

- Changed to focus on outputs rather than
inputs for signal present.

Specifications for electrical outputs:

- Added note regarding output signal level
when using passive bypass versions.

Specifications for electrical inputs:

- Divided the cable equalization @2970Mbps
into 2 classes; with and without relays for
passive bypass.

Product overview:

- Added comment of 60 meters of cable
equalizing for 2970Mbps with the passive
bypass versions.

1 0 2011-09-15

MR/AJM

Changed description of VSTD to not be supported
on 3G.
Added Multicon Gyda status and configuration.

0 - 2011-01-31

MR

Initial revision

3GHD-CHO-2x4/2x3 Rev. 2

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Contents

Revision history .......................................................................................................... 2

1 Product overview ..................................................................................................... 4

2 Variants ................................................................................................................... 5

3 Specifications .......................................................................................................... 6

4 Status by LED’s ....................................................................................................... 7

5 Status and control from GPI .................................................................................... 8

6 Configuration by DIP................................................................................................ 9

6.1 Configuration Examples..................................................................................................10

7 Status from Multicon Gyda .................................................................................... 11

7.1 Label and picture ............................................................................................................11

7.2 Input ...............................................................................................................................11

7.3 GPI .................................................................................................................................11

7.4 Voltage ...........................................................................................................................11

7.5 Reclocker .......................................................................................................................12

7.6 Video analyzer ................................................................................................................12

7.7 Alarms ............................................................................................................................12

8 Configuration from Multicon Gyda ................................ ................................ ......... 13

8.1 Card label .......................................................................................................................13

8.2 Firmware upgrade ..........................................................................................................13

8.3 Electrical input ................................................................................................................13

8.4 Reclocker .......................................................................................................................13

8.5 Electrical output ..............................................................................................................13

8.6 Change over block ..........................................................................................................14

8.7 Video triggers .................................................................................................................15

8.8 Video analyzers ..............................................................................................................17

9 Alarms on Multicon Gyda ....................................................................................... 18

9.1 Electrical input ................................................................................................................18

9.2 Reclocker .......................................................................................................................18

9.3 Change over ...................................................................................................................18

9.4 GPI .................................................................................................................................18

9.5 Voltage ...........................................................................................................................18

10 Information from Multicon Gyda ........................................................................... 19

11 Backplane ................................ ................................ ................................ ............ 20

General environmental requirements for Nevion equipment..................................... 22

Product Warranty ...................................................................................................... 23

Appendix A Materials declaration and recycling information..................................... 24

A.1 Materials declaration ......................................................................................................24

A.2 Recycling information .....................................................................................................24

EC Declaration of Conformity ................................................................................... 25

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1 Product overview

The Flashlink 3GHD-CHO-2x4 is a multi bit-rate distribution amplifier module providing high
performance media distribution for various signal formats from 19.4Mbps up to 2970Mbps.
The unit can be configured to do cable equalizing and reclocking of SMPTE 424M, SMPTE
292M and SMPTE 259M signal formats.

The two inputs typically provide automatic cable equalizing for up to 70 meters (60 meters for
the passive bypass versions) of cable (Belden 1694A at 2970Mbps) with a total of 8/6
reclocked outputs. The 3GHD-CHO-2x4 will detect 3GHD, HD and SD rates and
automatically switch to the correct output slew-rate.

The reclockers support the bit-rates 270Mbps, 1483.5Mbps, 1485Mbps 2967Mbps and
2970Mbps. For other rates, the reclockers automatically switch to bypass mode, and the
3GHD-CHO-2x4 will work as a non-reclocking distribution amplifier with cable equalizers.

The 3GHD-CHO-2x4 also supports reclocking of DVB-ASI at 270Mbps, enabling all possible
rates including empty transport streams with only K28.5 padding packets. 4 of the outputs
are non-inverting and suitable for DVB-ASI.

The unit can be configured as a 1 x 8/6 distribution amplifier including any of the input ports.
The included intelligent change-over feature gives the ability to change input based on input

signal loss, loss of lock, EDH errors or a combination of the above.
There is also included a passive bypass function (with backplane board C2 and C4) from

both inputs to non-inverted outputs with less than 15 m loss of cable length (enables full
redundancy in case of mains failure).

The 3GHD-CHO-2x4 is designed for all distribution purposes in studio, duplication and
broadcast applications.

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2 Variants

The 3GHD-CHO-2x4 main board can be combined with 4 different backplane boards giving
functions as follows:

Product

Type of

backplane board

# Outputs

GPI I/O

Relay (passive

loop-through)

19425 3GHD-CHO-2x4

Version C1

8

No

No

19427 3GHD-CHO-2x4-PB

Version C2

8

No

Yes

19429 3GHD-CHO-2x3-G

Version C3

6

Yes

No

19431 3GHD-CHO-2x3-PB-G

Version C4

6

Yes

Yes

Table 1. Product overview.

Please observe that –G versions cannot be used with N-Box, Flashlink one module desktop
box, due to mechanical issues.

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3 Specifications

Electrical Outputs

Connectors

75 Ohm BNC

Output Return loss

- < -15dB, 5MHz -1.5GHz

- < -10dB, 1.5GHz - 3GHz

Output signal level

800mV +/- 10%
Note: for the passive bypass versions (using backplane C2 or
C4) the signal is attenuated with a cable equivalent of 15m.

Output signal rise / fall time
20% - 80%

- SD limit: [0.4ns – 1.5ns]; <0.5ns rise/fall var.

- HD limit: < 270ps, <100ps rise/fall var.

- 3G HD limit: <135ps, <50ps rise/fall var.

Amplitude overshoot

<10%

Polarity

- Output O1A, O1B, O2A and O2B: Non inverting electrical

- Remaining outputs: inverting electrical

Output timing jitter

- SD: <0.2 UI

- HD: <1 UI

- 3G HD: <1UI

Output alignment jitter

- SD: <0.15 UI

- HD: <0.15 UI

- 3G HD: <0.2UI

Electrical Inputs

Connectors

75 Ohm BNC

Input Cable Eq. @270Mbps

>300m w/Belden 1694A, with BER < 10E-12

Input Cable Eq. @1485Mbps

>100m w/Belden 1694A, with BER < 10E-12

Input Cable Eq. @2970Mbps

Ver. C1 and C3: >70m w/Belden 1694A, with BER < 10E-12
Ver. C2 and C4: >60m w/Belden 1694A, with BER < 10E-12

Input Return loss

- < -15dB, 5MHz -1.5GHz

- < -10dB, 1.5GHz - 3GHz

Jitter tolerance

- SD limit:

- 10Hz-1kHz: >1 UI

- 10kHz – 5MHz: >0.2 UI

- HD limit:

- 10Hz-100kHz: >1 UI

- 100kHz–10MHz: >0.2 UI

- 3G HD limit:

- 10Hz-100kHz: >2 UI

- 100kHz–10MHz: >0.3 UI

Features

Reclocking:

Automatic SD/ HD detection
Automatic output slew rate adjustment according to SMPTE
259M and SMPTE 292M/ SMPTE 424M

Supported clock rates:

270, 1483.5, 1485, 2967, 2970Mbps

Input equalizers:

Eq. bypass for non-video formats or low bit rates

Supported standards

SMPTE:

SMPTE 424M, SMPTE 292M, SMPTE 259M, SMPTE 305M,
SMPTE 310M

DVB-ASI:

EN50083-9 (on non-inverting outputs)

General

DC power consumption:

+5V / < 4.5W

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4 Status by LED’s

The status of the module can be easily monitored visually by the LEDs at the front of the
module. The LEDs are visible through the front panel as shown below.

Figure 1 - Panel indicator overview (Text not printed on the front panel)

The functions of the different LEDs are described in table below.

Diode \ state

Red LED

Yellow LED

Green LED

No light

Status

Module is faulty

Module is OK
Module has power

Module has
no power

LOL & LOS 1
(Input 1)

No Reclocker
Lock & Loss Of
Signal

No Reclocker lock
& Signal present

Reclocker in lock &
Signal present

LOL & LOS 2
(Input 2)

No Reclocker
Lock & Loss Of
Signal

No Reclocker lock
& Signal present

Reclocker in lock &
Signal present
Main/Bypass

No stable input

Bypass selected

Main selected

Table 2. LED status description

Status

LOL & LOS 1

LOL & LOS 2

Main/Bypass

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5 Status and control from GPI

On the backplane there is a GPI port. This connector can be used for monitoring the modules
status. Also the change over function can be controlled through this connector.

GPI name

(setup1/

setup2)

Function

(setup1/ setup2)

Pin #

Mode

Direction

Electrical

Maximums

for GPI

outputs:

Max current:
100mA

Max voltage:
30V

Max power:
200mW

Status

General error status for the
module

Pin 1

Inverted Open
Collector
(open is alarm)

Output

Main

Loss of signal or lock at
main input

Pin 2

Inverted Open
Collector
(open is alarm)

Output

Signal
present 1

Good signal routed to
output 1

Pin 3

Inverted Open
Collector
(open is alarm)

Output

Signal
present 2

Good signal routed to
output 2

Pin 4

Inverted Open
Collector
(open is alarm)

Output
Reset

Reset selected input to
main

Pin 5

TTL, 0V =
active level

Input

Set

Set selected input to
standby

Pin 6

TTL, 0V =
active level

Input
Not used

Pin 7

Ground

0 volt pin

Pin 8

0V.

Table 3 - Description of GPI interface

Figure 2 - GPI interface

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6 Configuration by DIP

The 3GHD-CHO-2x4 supports a number of different formats. The correct configuration can
either be set with a DIP switch or with the GYDA system controller. The layout of 3GHD­CHO-2x4 is shown in the drawing below.

Figure 3. 3GHD-CHO-2x4 module layout

DIP switch configuration must be set according to the table below:

Switch #

Label

Function DIP=OFF

Function DIP=ON

Comment

1

CHO

Distribution functionality

Change-over
functionality

Card functionality

2

IN1

Input 1 standby, 2 main

Input 1 main, 2
standby

Select main/standby for
CHO and DA

3

S/D

Single 1x8 (1x6 with GPI)
from main

Dual 1x4 (1x3 with
GPI)

With CHO, dual mode
gives CHO +
distributed standby
signal

4

RUL

Loss of signal

Loss of lock

Signal integrity
decision in change­over mode.
N/A in distribution
mode.

5

LTC

Non-latching switch. Will
automatically return to
main when input signal is

”good”

Latching switch. Must
be reset to return from
standby to main

“Sticky” switching
”good” is depending on

switch criteria in
change-over mode.
N/A in distribution
mode.

6

RCL

Reclocker Bypass

Reclocker ON

Reclocker mode

7

EQ

Cable equalizer Bypass
(Loss of signal will not
work on this mode)

Cable Equalizer ON

Equalizer mode

8

OVR

Module controlled by
Gyda system controller

Module controlled by
DIP switches

Select GYDA config.
mode

Table 4: 3GHD-CHO DIP switches

All DIP switches are off when pointing towards the release handle.

DIP switches

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6.1 Configuration Examples

Typical configurations for 3GHD-CHO-2x4:

Figure 5. Distribution mode, Input 2 priority, Input 1 to 4 outputs,
Input 2 to 4 outputs, transparent mode without equalization and reclocking.

Figure 4. Distribution mode, Input 1 priority, Input 1 to all outputs,
reclocker and equalizer on.

Figure 6. Change-over mode, input 1 priority, single distributed output,
loss of lock criteria, non latching switch, reclocker and equalizer on

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7 Status from Multicon Gyda

7.1 Label and picture

The module label is show above the picture. The picture is changing depending on the status
of the module. All alarms are shown with red crosses. The output selection and the main
input on the change over block are shown by changing the lines inside the switch block.

7.2 Input

Input signal status is show together with the configuration of the inputs; bypass, mute or
normal.

7.3 GPI

Show the status of the input pin on the GPI connector on the backplane. Inactive means no
signal while Active mean signal.

7.4 Voltage

Shows the actual voltages on the module together with the nominal voltages.

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7.5 Reclocker

Shows the status of the reclocker together with the formats and bitrates.

7.6 Video analyzer

Shows the status of the video analyzer for each input together with the level B channel
status. Also the video format is shown. The error counter shows the number of errors that
has happen according to the video analyzer configuration. The error count can be reset by
pressing the reset button. This analyzer do not reset the changeover latch which has to be
done by the GPI connector or for the configuration tab.

7.7 Alarms

All active alarms are shown as red and can be acknowledge by pressing the button. The
alarms then change color to yellow, meaning all acknowledged alarms is shown in yellow. All
restored alarms are shown in green, by acknowledge them they will disappear form the list.

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8 Configuration from Multicon Gyda

8.1 Card label

Assign a name to the Flashlink module, up to 31 characters. When the locate is pushed all
indicators/LED’s on front of the module will flash for 120 seconds, alternative an period can
be enter into the sec box.

8.2 Firmware upgrade

Update the firmware on the Flashlink module. The firmware file first has to be uploaded to
Multicon Gyda first by ftp. See user manual on Multicon Gyda for help on uploading.

8.3 Electrical input

For SDI signal set the electrical input to normal. For MADI and other low bitrates none SDI
signal set this to EQ bypass. Mute will mute the input signal, use this when the input has no
signal to prevent noise to appear on the input.

8.4 Reclocker

For SDI signal set to enable, else set to bypass. Autobypass only works if the reclocker is
enabled. With autobypass on the reclocker will set the reclocker in bypass mode when none
SDI signal is detected.

8.5 Electrical output

Each output can select getting signal from either the two inputs or from the change over
block using automatic selection.

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8.6 Change over block

The change over block is called “main input” and all alarms from the change over block are

labeled “main input”. *In the following figure the change over function is explained.

The main input is selected. The other input will automatically be the backup input.

In the rules radio button loss of lock or loss of input signal is chosen for the main trigger for
doing change over. Addition to this rules and EDH trigger can be setup, see chapter 8.7.

The trigger has an adjustable time control, called "hold time" and “lock time”. This is used for
three situations:

1. Multiple bursts of error within timer duration triggers a switching to standby.

2. Single continuous error condition whose duration exceeds timer triggers a switching
to standby.

3. Error free periods, whose duration exceeds timer, triggers a switching back to main.

The “hold time” is for main to backup trigging while the “lock time” is for backup to main
restoring of the signal.

The latch will select the behavior of the change over. The following block diagram explains
the behavior of the change over.

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When the latch is set to off:

Main is

selected

Backup is

selected

Main restored

Main is removed

Backup is removed
Main is removed

Backup is removed

Figure 7

When latch is on and “allow latch to break on los” is inactive:

Main is

selected

Backup is

selected

Main restored

Main removed

Backup removedBackup removed

Backup is

selected

Backup removed

Reset command

Main removed

Figure 8

When latch is on and “Allow latch to break on los” is active:

Main is

selected

Backup is

selected

Main restored

Main removed

Backup removedBackup removed

Backup is

selected

Reset command or

Backup removed

Main removed

Figure 9

8.7 Video triggers

A trigger is another way of controlling the change-over functionality than the loss of lock and
loss of signal. Each input has their one video trigger, called channel 1 and 2 trigger. In
addition also each channel has an A and B analyzer which reflect the level A and B in a 3G­SDI stream. The triggers are using the same information (and therefore have the same bit
names as the analyzers), but have separate bit masks. This means that it is possible to count
one set of error types, while using a different error type to control the change-over. This
video triggers can trigger a change over together with loss of lock or loss of signal. The video
trigger can be enabled by selecting the four disable/enable radio buttons

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There is one trigger for each analyzer, there are triggers for both the main and standby input,
an error condition on main input doesn't necessarily mean the change-over will switch, but for
simplicity the following description assumes that the standby channel is always "good".

These trigger event is:

EDH

No EDH packets (SD only)

VSTD

SMPTE 352 packets do not correspond to detected video standard (SD/HD only)
Not supported for 3G.

FFCRC

Full Field CRC (SD only)

APCRC

Active Picture CRC (SD only)

LOCK

Analyzer chip is not locked to a bit stream (or stream 2 not present, for "Stream
2" analyzer)

CCS

Chroma channel ancillary data check sum error

YCS

Luma channel ancillary data check sum error

CCRC

Chroma channel video data check sum error

YCRC

Luma channel video data check sum error

LNUM

Line number error

SAV

Start of active video flags missing or misplaced

EAV

End of active video flags missing or misplaced

Errors are checked once per video field (LOCK errors are counted every 20ms when no
video is present). If an error occurs, it is checked against the bit mask, and if selected for
counting increments the error counter. An SNMP tool is recommended for tracking error
counts over time, with selectable limits on error rate and max count before generating a
warning.

Each trigger has an adjustable time control, called "hold time". This is used for three
situations:

1. Multiple bursts of error within timer duration triggers a switching to standby.

2. Single continuous error condition whose duration exceeds timer triggers a switching
to standby.

3. Error free periods, whose duration exceeds timer, triggers a switching back to main.

The trigger also has a setting for "bit operator". It is possible to do a logical AND on the bits
after applying the mask. Set to AND, all the individual error types that have been enabled
must be occurring to count as an error condition. Set to OR, any enabled error type will
suffice.

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8.8 Video analyzers

The two inputs have their own analyzer, called channel 1 and 2. In addition also each
channel has an A and B analyzer which reflect the level A and B in a 3G-SDI stream.

These errors can be counted (or ignored) based on the settings in the configuration view:

EDH

No EDH packets (SD only)

VSTD

SMPTE 352 packets do not correspond to detected video standard (SD/HD only)
Not supported for 3G.

FFCRC

Full Field CRC (SD only)

APCRC

Active Picture CRC (SD only)

LOCK

Analyzer chip is not locked to a bit stream (or stream 2 not present, for "Stream
2" analyzer)

CCS

Chroma channel ancillary data check sum error

YCS

Luma channel ancillary data check sum error

CCRC

Chroma channel video data check sum error

YCRC

Luma channel video data check sum error

LNUM

Line number error

SAV

Start of active video flags missing or misplaced

EAV

End of active video flags missing or misplaced

Errors are checked once per video field (LOCK errors are counted every 20ms when no
video is present). If an error occurs, it is checked against the bit mask, and if selected for
counting increments the error counter. An SNMP tool is recommended for tracking error
counts over time, with selectable limits on error rate and max count before generating a
warning.

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9 Alarms on Multicon Gyda

Each alarm can be set to be ignored by the Multicon Gyda alarm handling. Also SNMP tram
can be configured to send or ignore alarms. Configure the alarms in Multicon Gyda do not
change the behavior of the LED’s on the module.

9.1 Electrical input

If the electrical input is missing this alarm will be raised

9.2 Reclocker

If the reclocker does not lock to the incoming signal an alarm will be raised.

9.3 Change over

If the changeover has switch to the backup channel this alarm will be raised.

9.4 GPI

If an input signal is present on the GPI input, these alarms will be raised.

9.5 Voltage

If the voltages is out of the range, these alarms will be raised.

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10 Information from Multicon Gyda

In the configuration tab the version of the hardware and software is shown. Also the cards
unique serial number is shown.

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11 Backplane

The 3GHD-CHO-2xn has four dedicated backplane modules: DA-3G-2x4-C1, - C2, - C3 and
– C4. These modules are mounted at the rear of the sub-rack.

The modules are shown in figure 6 to 9.

Figure 10. Overview of the DA-3G-2x4-C1 connector module

Figure 11. Overview of the DA-3G-2x4-C2 connector module

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The electrical input signals are connected to the IN1 and IN2 BNCs and the electrical outputs
are connected to the O-- BNCs.

Please note that O1A, O1B, O2A and O2B have inverted signals, DVB-ASI
cannot be used on these outputs.

Unused inputs and outputs should be terminated with 75 ohm to meet the
specifications.

Figure 12. Overview of the DA-3G-2x4-C3 connector module

Figure 13. Overview of the DA-3G-2x4-C4 connector module

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General environmental requirements for Nevion equipment

1.

The equipment will meet the guaranteed performance specification under the following
environmental conditions:

-

Operating room temperature range:

0°C to 45°C

-

Operating relative humidity range:

<90% (non-condensing)

2.

The equipment will operate without damage under the following environmental
conditions:

-

Temperature range:

-10°C to 55°C

-

Relative humidity range:

<95% (non-condensing)

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Product Warranty

The warranty terms and conditions for the product(s) covered by this manual follow the
General Sales Conditions by Nevion, which are available on the company web site:

www.nevion.com

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Appendix A Materials declaration and recycling information

A.1 Materials declaration

For product sold into China after 1st March 2007, we comply with the “Administrative
Measure on the Control of Pollution by Electronic Information Products”. In the first stage of

this legislation, content of six hazardous materials has to be declared. The table below
shows the required information.

組成名稱

Part Name

Toxic or hazardous substances and elements

鉛

Lead

(Pb)

汞

Mercury

(Hg)

镉

Cadmium

(Cd)

六价铬

Hexavalent

Chromium

(Cr(VI))

多溴联苯

Polybrominated

biphenyls

(PBB)

多溴二苯醚

Polybrominated

diphenyl ethers

(PBDE)

3GHD-CHO-2x4
/2x3

O O O O O

O

O: Indicates that this toxic or hazardous substance contained in all of the homogeneous materials for
this part is below the limit requirement in SJ/T11363-2006.

X: Indicates that this toxic or hazardous substance contained in at least one of the homogeneous
materials used for this part is above the limit requirement in SJ/T11363-2006.

This is indicated by the product marking:

A.2 Recycling information

Nevion provides assistance to customers and recyclers through our web site

http://www.nevion.com/. Please contact Nevion’s Customer Support for assistance with

recycling if this site does not show the information you require.
Where it is not possible to return the product to Nevion or its agents for recycling, the

following general information may be of assistance:

 Before attempting disassembly, ensure the product is completely disconnected from

power and signal connections.

 All major parts are marked or labeled to show their material content.
 Depending on the date of manufacture, this product may contain lead in solder.
 Some circuit boards may contain battery-backed memory devices.

Nevion HQ:

Nevion Europe, P.O. Box 1020, 3204 Sandefjord, Norway

Tel: [phone] – Fax: [phone] – www.nevion.com

EC Declaration of Conformity

MANUFACTURER

Nevion

AUTHORIZED REPRESENTATIVE
(Established within the EEA)

Not applicable

MODEL NUMBER(S)

3GHD-CHO-2x4 / 2x3

DESCRIPTION

Multi Rate 3GHD-SDI Distribution Amplifier
with change-over

DIRECTIVES this equipment complies with

Low voltage (EU Directive 2006/95/EC)
EMC (EU Directive 2004/108/EC)
RoHS (EU Directive 2002/95/EC)
China RoHS1
WEEE (EU Directive 2002/96/EC)
REACH

HARMONISED STANDARDS applied in order
to verify compliance with Directive(s)

EN 55103-1:2010
EN 55103-2:2010
EN 60950-1:2006

TEST REPORTS ISSUED BY

Notified/Competent Body

Report no:

TECHNICAL CONSTRUCTION FILE NO

Not applicable

YEAR WHICH THE CE-MARK WAS AFFIXED

2011

TEST AUTHORIZED SIGNATORY

MANUFACTURER

AUTHORIZED
REPRESENTATIVE
(Established within EEA)

Date of Issue

2011-02-01

Place of Issue

Not applicable

Sandefjord, Norway

Name

Thomas Øhrbom

Position

VP of Business Support Systems,
Nevion
(authorized signature)

1

Administration on the Control of Pollution Caused by Electronic Information Products