Nevion SDI-CHO-2x1-PB User Manual

SDI-CHO-2x1-PB

SDI-CHO-2x1

2x1 SDI change-over with relayed input bypass

User manual

Rev. E

Nevion

Nordre Kullerød 1
3241 Sandefjord
Norway
Tel: [phone]

nevion.com

SDI-CHO-2x1/ SDI-CHO-2x1-PB Rev. E

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: +1 (805) 247-

8560

E-mail: [e-mail]

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

Rev.

Repl.

Date

Sign

Change description

E 4 2015-05-14

MB

Cover page update; DoC removed; no other
changes to content

4 3 2012-05-21

SHH

Added –PB product. Changed template.

3 2 2007-10-29

New front page.

2 1 2007-10-08

Added Materials Declaration and EFUP

1 0 10.08.06

New firmware revision has another timer and
slightly different latch

0 A 19.12.03

First released version

A 22.09.03

Preliminary version

Nevion Support

Revision history

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

nevion.com | 2

SDI-CHO-2x1/ SDI-CHO-2x1-PB Rev. E

Contents

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

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

1.1 Product versions ............................................................................................................... 4

2 Specifications ................................................................................................ ...................... 5

3 Format Configuration ........................................................................................................... 6

3.1 Configuration Examples ................................................................................................... 7

4 Connections ........................................................................................................................ 8

4.1 Mounting the connector module. ...................................................................................... 8

5 Module status ...................................................................................................................... 9

5.1 GPI ALARM and Control – Module Status Outputs and selection of inputs ....................... 9

5.2 Front Panel - Status Monitoring ...................................................................................... 10

6 Interface with GYDA and RS-422 command set ................................................................ 11

6.1 SDI-CHO-2x1 Command table ....................................................................................... 11

Product Warranty ................................................................................................................. 13

Appendix A Materials declaration and recycling information ................................................. 14

A.1 Materials declaration ...................................................................................................... 14

A.2 Recycling information ..................................................................................................... 14

nevion.com | 3

SDI-CHO-2x1/ SDI-CHO-2x1-PB Rev. E

SDI-CHO-2x1

2x1 SD-SDI changeover

SDI-CHO-2x1-PB

2x1 SD-SDI change over with passive bypass

Figure 1 - SDI-CHO-2x1 Serial Digital Video Change-over

1 Product overview

The flashlink SDI-CHO-2x1-PB/SDI-CHO-2x1 is a serial digital video 2x1 change-over
module providing high performance line protection for various signal formats from
1Mbps up to 540Mbps. The unit can be configured to perform cable equalizing and re­clocking of SMPTE 259M and DVB-ASI signal formats. The switching criteria can be
selected to be based on loss of input signal or loss of lock (re-clocker). The switch can
either be latching or non-latching (in loss of lock mode, only latching switch is
available). It is also possible to control the switch with GPI inputs, with the GYDA
system controller or with the open protocol RS422 interface.

The two inputs typically provide automatic cable equalizers for up to 300 meters of
cable (Belden 8281A at 270Mbps) with a 2 x 1 switch in front of a re-clocker with 4
outputs. The re-clocker supports the bit-rates; 143, 177, 270, 360 and 540Mbps. For
other rates, the re-clocker automatically switches to bypass mode and the SDI-CHO­2x1 will work as a non-re-clocking 2x1 change-over unit with cable equalizer. The SDI­CHO-2x1 also has a special DVB-ASI mode, enabling all possible rates including
empty transport streams with only K28.5 padding packets. 2 outputs are non-inverting
to support DVB-ASI compatibility.

The SDI-CHO-2x1 is designed for various line protection applications for studio,
campus, broadcast and telecom. The SDI-CHO-2x1-PB also features a relayed bypass
of both inputs to its respective outputs ensuring signal bypass at power down or card
failure/ upgrade.

New in firmware version 2.0.0 or newer: When latched to standby input, latch will not
hold against missing signal on standby input if the signal on main input has been
restored. Also, a secondary timer has been added, which handles de-bouncing of the
“signal on main input returns” condition. The primary timer handles de-bouncing of LOS
on both main and standby inputs.

1.1 Product versions

nevion.com | 4

SDI-CHO-2x1/ SDI-CHO-2x1-PB Rev. E

2 Specifications

Electrical Input

Number of inputs: 2
Data rate NRZ: 1 to 540 Mbps
Equalization: Automatic (typical up to 300m Belden
8281A)
Cable reclocker can be bypassed to
support

bit rates down to 1Mbps.
Impedance: 75 ohm
Return loss: >15dB @ 540MHz
Signal level: nom. 800mV
apx. 200mV min. when equalizer switched
to Bypass
Connector: BNC

Electrical Output

Number of outputs: 4
Connector: BNC
Impedance: 75 ohm
Return loss: >15dB @ 540MHz
Jitter: max 0.2UI
Peak to peak signal level: 0.8V 0.1V
Signal polarity 2 outputs non inverting, 2 outputs inverting

Features

Re-clocking: Automatic clock rate detection
Supported clock rates: 143, 177, 270, 360
and 540 Mbps

Electrical

Power: +5V DC / 3W Max.
Control: Control system for access to setup and
module status

With BITE (Built-In Test Equipment) for

use with Multicon Gyda Control System
Supported standards
SMPTE: SMPTE259M, SMPTE305.2M,

SMPTE310M, SMPTE344M
DVB-ASI: EN50083-9

nevion.com | 5

SDI-CHO-2x1/ SDI-CHO-2x1-PB Rev. E

Switch #

Label

Function DIP=OFF

Function DIP=ON

Comment

1

LTC

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

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

“Sticky” switching

2

IN1

Input 2 priority

Input 1 priority

Select main input

3

L/R

Loss of signal based switch
decision

Reclocker based switch
decision

Signal integrity
decision

4

TME

Ripple rejection OFF

Ripple rejection ON (variable
delay)

Timing

5

RCL

Reclocker Bypass

Reclocker ON

Reclocker mode

6

EQ

Cable equaliser Bypass
(Loss of signal based switch
decision will not work on this
mode)

Cable equaliser ON

Equaliser mode

7

ASI

SDI 177Mbps Reclocker
support

DVB-ASI Reclocker support

ASI mode

8

OVR

GYDA control
Config. with GYDA

Override GYDA control
Config. with DIP switch

Select GYDA
config. mode

Figure 2 - SDI-CHO-2x1 board layout

3 Format Configuration

The SDI-CHO-2x1/-PB can support a number of different formats. The correct
configuration can either be set with a DIP switch or with the Multicon Gyda Control
System. The layout of SDI-CHO-2x1 is shown in the drawing below with the DIP switch

to the upper left position.

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

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

When the default setting is selected, all clock rates for SDI and DVB-ASI are
automatically configured by the module itself.

nevion.com | 6

SDI-CHO-2x1/ SDI-CHO-2x1-PB Rev. E

3.1 Configuration Examples

Typical configurations for SDI-CHO-2x1:

Figure 3 - Default for SDI or DVB-ASI;

Non-latching, Input1=main, LOS based, Reclocking, Ripple rejection OFF

Figure 4 - SDI or DVB-ASI; Latching, Reclocker based decision

Figure 5 - Transparent Mode for Non-supported rates with Ripple rejection timer;

Latching, LOS based decision, Time ON, reclocking OFF

nevion.com | 7

SDI-CHO-2x1/ SDI-CHO-2x1-PB Rev. E

4 Connections

The SDI-CHO-2x1 and SDI-CHO-2x1-PB has dedicated connector modules, SDI-CHO­2x1-C1 and FRS-HD-CHO-C1. These modules are mounted at the rear of the sub­rack. The modules are shown in the figure below.

Figure 6 SDI-CHO-2X1-C1 FRS-HD-CHO-C1 (SDI-CHO-2x1-PB)

The electrical input signals are connected to the IN1 and IN2 BNC’s. The electrical

outputs are connected to the O1 to O4 BNC’s. Please note that only 2 outputs are non-

inverted and suitable for DVB-ASI. The Sync input connectors are not in use on this
product.

The details of how the connector module is mounted, is found in the user
manual for the sub-rack frame FR-2RU-10-2-xx.

This manual is also available from our web site: http://www.nevion.com/

4.1 Mounting the connector module.

The details of how the connector module is mounted, is found in the user manual for
the sub-rack frame FR-2RU-10-2-xx.

This manual is also available from our web site: http://www.nevion.com/

nevion.com | 8

SDI-CHO-2x1/ SDI-CHO-2x1-PB Rev. E

Signal

Name

Pin #

Mode

Direction

Status

General error status for the
module.

Pin 1

Open Collector

Output
LOS

Loss Of Signal at selected input

Pin 2

Open Collector

Output

Input 1

Input 1 selected (IN1)

Pin 3

Open Collector

Output

Input 2

Input 2 selected (IN2)

Pin 4

Open Collector

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
Ground

0 volt pin

Pin 8

0V.

5 Module status

The status of the module can be monitored in three ways.

1. GYDA System Controller (optional).

2. GPI at the rear of the sub-rack.

3. LED’s at the front of the sub-rack.
Of these three, the GPI and the LED’s are mounted on the module itself, whereas the

GYDA System Controller is a separate module giving detailed information on the card

status. The functions of the GPI and the LED’s are described in sections 5.1 and 5.2.

The GYDA controller is described in a separate user manual.

5.1 GPI ALARM and Control – Module Status Outputs and
selection of inputs

These outputs can be used for wiring up alarms for third party control systems. The
GPI outputs are open collector outputs, sinking to ground when an alarm is triggered.
The GPI connector is shown in figure 7.

The two GPI inputs can be used to control switching of inputs.

Electrical Maximums for GPI outputs

Max current: 100mA
Max voltage: 30V

SDI-CHO-2X1 module GPI pinning:

Figure 7 - GPI Pin layout

nevion.com | 9

SDI-CHO-2x1/ SDI-CHO-2x1-PB Rev. E

Diode \ state

Red LED

Yellow LED

Green LED

No light

Status

Module is faulty

Module is OK
Module power is OK

Module has no
power

Lock&LOS

Loss Of Signal & No
Reclocker lock

Signal present & No
Reclocker lock

Signal present &
Reclocker in lock

Input 1

No input signal on
Input 1

Signal present & not
selected

Signal present &
Input 1 selected

Input 2

No input signal on
Input 2

Signal present & not
selected

Signal present &
Input 2 selected

5.2 Front Panel - Status Monitoring

The status of the module can be easily monitored visually by the LED’s at the front of
the module. The LED’s are visible through the front panel as shown in figure 8 below.

Figure 8 - Front panel indicator overview for SDI-CHO-2x1 ((Text not printed on the front

panel).

The SDI-CHO-2x1 has 4 LED’s each showing a status corresponding to the GPI
pinning. The position of the different LED’s is shown in figure 8.

nevion.com | 10

SDI-CHO-2x1/ SDI-CHO-2x1-PB Rev. E

Command

Response

Comment

?

See protocol description

The “hello” command

info

Module status information

reset

OK

Reset latch to main input channel.

set auto

OK

Set to automatic input channel selection. Automatic input
selection enabled.

set main

OK

Set to main input channel. Automatic input selection
disabled.

set standby

OK

Set to standby input channel. Automatic input selection
disabled.

timer off

OK

Switch off time delay for input selection automatics

timer on

OK

Switch on time delay for input selection automatics

timer xx

OK

xx is the delay time for the timer. For firmware version

2.0.0 or newer, this is only used for switching from main
to standby. (Value stored in EEPROM)

timer_rst xx

OK

xx is the delay time for the secondary timer, used on FW

2.0.0 or newer to reset back to main. (Value stored in
EEPROM)

mode los

OK

Input selection automatics based on loss of signal

mode rcl

OK

Input selection automatics based on reclocker in lock

asi on

OK

Set DVB-ASI Reclocker support

asi off

OK

Set SDI 177Mbps Reclocker support

latch on

OK

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

latch off

OK

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

rcl on

OK

Reclocker on

rcl off

OK

Reclocker Bypass

eq on

OK

Cable equaliser on

eq off

OK

Cable equaliser Bypass (Los of signal based switch
decision will not work on this mode)

main 1

OK

Input 1 configured as main. Input 2 is standby.

main 2

OK

Input 2 configured as main. Input 1 is standby.

6 Interface with GYDA and RS-422 command set

All commands follow the flashlink protocol and can be used for direct control access to
the modul. The control system can either be a GYDA-SC or a third-party control
system with integrated flashlink protocol. The module can also be manually controlled
with a VT100 compatible terminal program.

The protocol can be found on our web page; http://www.network-electronics.com

6.1 SDI-CHO-2x1 Command table

nevion.com | 11

SDI-CHO-2x1/ SDI-CHO-2x1-PB Rev. E

1.

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

-

Operating room
temperature range:

0°C to 40°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 50°C

-

Relative humidity range:

<95% (non-condensing)

General environmental requirements for Nevion equipment

nevion.com | 12

SDI-CHO-2x1/ SDI-CHO-2x1-PB Rev. E

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

nevion.com | 13

SDI-CHO-2x1/ SDI-CHO-2x1-PB Rev. E

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)

SDI-CHO-2x1
SDI-CHO-2x1-PB

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.

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.

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.com | 14