Ensemble Designs 7160 User Manual
Model 7160 HD/SD/ASI/310 Protection DA
E NSEMBLE
DESIGNS
Model 7160
HD/SD/ASI/310
Protection DA
Data Pack
Revision 1.0 SW v2.2.10
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7160-1
Model 7160 HD/SD/ASI/310 Protection DA
Contents
MODULE OVERVIEW 4
SDI Signal Evaluation 4
DVB-ASI and SMPTE 310M Signal Evaluation 5
Block Diagram 6
APPLICATIONS 9
Auto-Switched Trouble Slide Application 9
Auto-Switched Upconversion Application 10
3RU and 1RU Backplane Diagrams 11
Status and Alarm Cabling 12
MODULE CONFIGURATION AND CONTROL 13
7160 Parameter Table 14
Front Panel Controls and Indicators 16
AVENUE PC REMOTE CONFIGURATION 17
7160 Avenue PC Menus 17
Status Menu 17
Cong Menu 19
Black Detect Menu 20
Audio Detect Menu 21
Freeze Menu 22
ASI Cong Menu 23
ASI Status Menu 24
Pri Errors Menu 25
GPI Menu 26
Inputs Menu 27
Memory Menu 28
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Model 7160 HD/SD/ASI/310 Protection DA
AVENUE TOUCH SCREEN REMOTE CONFIGURATION 29
7160 Avenue Touch Screen Menus 30
Status Menu 30
Cong Menu 31
Black Detect Menu 32
Audio Detect Menu 33
Freeze Menu 34
ASI Cong Menu 35
ASI Status Menu 36
Pri Errors Menu 37
GPI Menu 38
Inputs Menu 39
Memory Menu 40
TROUBLESHOOTING 41
SOFTWARE UPDATES 41
WARRANTY AND FACTORY SERVICE 42
Warranty 42
Factory Service 42
SPECIFICATIONS 43
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7160-3
Model 7160 HD/SD/ASI/310 Protection DA
MODULE OVERVIEW
The 7160 Serial Digital Protection DA module is a fail-safe bypass protection switch for monitoring and
switching critical SD and HD paths in broadcast and satellite applications. When a fault is detected in
the Primary input, the switch will activate, causing the Secondary (backup) input to be switched to the
module’s distributed outputs. The switch can operate in two modes; automatic or nonresetting.
The 7160 monitors the integrity of the Primary serial digital input stream and analyzes the audio
and video content. Signal health and fault detection is determined by monitoring any or all of the
following parameters: Closed Caption Data, Timing Reference Signal (TRS), Black, Embedded Audio,
Error Detection and Handling (EDH), CRCs, and Freeze.
A sophisticated Black detection system is employed to activate the switch in the event signal is lost.
It allows the user to select not only the threshold and percentage of non-black pixels, but also the
portion of the picture to be considered.
The Freeze detection system can be set to detect a clean or noisy source. Freeze Time sets the number
of seconds that can elapse before the 7160 switches to the secondary input after a video freeze
condition is detected in the primary input.
SDI Signal Evaluation
The 7160 monitors the integrity of the serial digital input stream and analyzes its audio and video
content. Signal health and fault detection of SD SDI and HD SDI signals is determined by monitoring
any or all of the following parameters, in order of increasing complexity:
Timing Reference Signal (TRS)• – This parameter checks for the persistent loss of digital sync
by looking for the correct Timing Reference Signal carried in the serial video stream. When this
digital sync format is correct, the signal is considered good.
Black• – Black detection is based on three congurable parameters: black level threshold, black
pixel count, and black duration time. All of these parameters can be set using the menu system
to meet the needs of specic video signal inputs.
Embedded Audio• – This parameter will look for correctly congured embedded audio
packets in the horizontal intervals of the signals. The actual audio content of the packets is
further analyzed to detect silence. Specic audio parameters, such as audio group, silence
threshold level, and audio silence duration can be congured in the Avenue PC and Touch
Screen menus.
Freeze• – This parameter checks for a freeze condition as determined by the settings selected
in the Freeze menu.
A sophisticated black detection system is employed to activate the switch in the event signal is lost.
It allows the user to select not only the threshold and percentage of non-black pixels, but also the
portion of the picture to be considered. The area of the picture checked is determined by selecting
Small Window which is approximately two thirds of the picture width and height, or Big Window
which covers approximately 90% of the width and height. This allows a corner Bug to be either
excluded or included in the detection process.
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Model 7160 HD/SD/ASI/310 Protection DA
Black detection is performed on a pixel-by-pixel basis within the selected window, with user selectable
Detect Level and Blk Frac adjustments. Pixels above the Detect Level are considered as being non-
black. Blk Frac sets the percentage of pixels which must be non-black. If Detect Level is set to 12 IRE
and Blk Frac is set to 10% then the 7160 expects there to be pixel levels above 12 IRE for more than
10% of each frame. For example, if Blk Time is set to 3 seconds, if less than 10% of the pixels in each
frame are above the selected 12 IRE level for a period of 3 seconds, a switch will occur.
Pri Valid and Sec Valid are dynamic values based on incoming video. In the above example, if Pri
Valid fell below Blk Frac continuously for 3 seconds there would be a switch, provided that there
is valid secondary video. Note however, that the display may not keep pace with short duration
transitions of actual video. In the example, an excursion above 12 IRE for a single frame every 2
seconds would not cause a switch to take place, since the 3 second count would be reinitialized by
these valid frames.
DVB-ASI and SMPTE 310M Signal Evaluation
For DVB-ASI and SMPTE 310M signals, there are two levels of signal analysis available: Simple or
Advanced. Use the ASI Test control in the Cong menu to choose between these.
When ASI Test is set to Simple, the 7160 looks for:
Input signal presence and digital clock lock•
Presence of non-null (blank) packets•
Presence of Program Allocation Table (PAT) PIDs occurring at least two per second•
When ASI Test is set to Advanced, the 7160 looks for the above conditions, plus the following:
The presence of at least one program stream being called for in the PAT. The 7160 can •
automatically look for the rst one, or the user can tell it which of the rst four it should look
for. This selection is made with the Pgm Target control in the ASI Cong menu. The 7160
expects at least one Program Management Table (PMT) PID per second.
The targeted Program must contain at least one elementary Video Stream and one elementary •
Audio Stream.
A user-dened minimum number of video packets each second in the Video PID.•
A user-dened minimum number of audio packets each second in the Audio PID.•
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Model 7160 HD/SD/ASI/310 Protection DA
The Pri ASI Status indicator show what has been detected in the incoming DVB-ASI or SMPTE 310M
stream.
Possible indications are:
Good• – The DVB-ASI or SMPTE 310M signal passes all tests (either Simple or Advanced)
No ASI• – No DVB-ASI or SMPTE 310M signal has been detected
No Packets• - All of the packets in the stream are null. There are no actual program packets
No PAT• - There are non-null packets, but no Program Allocation Table can be found
No PMT• - No Program Management Table can be found
No Video• - The user-dened minimum number of video packets per second has not been met
No Audio• - The user-dened minimum number of audio packets per second has not been met
The ASI Status menu shows a breakdown of these elements of analysis with a display of live results.
The displayed values for the rate (in PIDs per second) for the video and audio can be used as a guide to
setting the Min Vid Rate and Min Aud Rate values for a particular system or installation.
Whenever the DVB-ASI test generates a result other than Good, a timer begins running. If that timer
reaches the ASI Time value set in the ASI Cong menu, the channel will be marked as faulted and the
switch will move to the Secondary input.
When the program assignments in a DVB-ASI stream change, it can take up to a second for the 7160
detector to re-acquire all of the table information needed to show that the signal is good. For this
reason, a setting of between 2 - 5 seconds is recommended for the ASI Time parameter.
The Pri Errors menu shows error-seconds counters for all tests performed by the 7160. The ASI Vid
ErrSec control shows the cumulative number of seconds where the minimum packet rate was not
met. Depending on how the ASI Time control is set, these errors may or may not have actually caused
a program switch to occur. To reset the error-seconds counters, click them.
Block Diagram
The block diagram on the following page illustrates the signal ow of the 7160. Note that in the event
of power failure, the passive relay passes the primary input to the Relay Protected Output.
The Primary and Secondary inputs pass through serial digital receiver/equalizers for buering. When
a fault is detected in the Primary input, and the Secondary input is seen as not faulted, the electronic
solid state switch will activate, switching the Secondary input to the output.
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7160-6
Model 7160 HD/SD/ASI/310 Protection DA
Rcvr/EQ
Deserializer
& EDH Processor
Primary
Loopback
Content
Analyzer
Protection
Watchdog
GPI Inputs
Sel Sec
Sel Pri
Switch Position
GPI Override Inputs
Status Logging
Avenue System Control
Secondary Fail
Primary Fail
Common
Serial Port
Form C
Relay
Alarm Outputs
Backplane
Interface
Module Control System
Decision Arbitration
Reclocker
Relay
Rcvr/EQ
Secondary
Loopback
HD/SD
Primary Input
Relay
Protected
Output
(Fail-safe)
Protected
Outputs
(5 each)
HD/SD
Secondary Input
Reclocker
Each of the signals is fed to identical detection circuits which evaluate multiple parameters and
characteristics of the signal in order to arrive at a fault decision. Detection of TRS errors is done in a
Receiver/Reclocker circuit which produces a reclocked serial output feeding a Deserializer circuit. The
output of this section then feeds a Field Programmable Gate Array (FPGA) where the signals are vetted,
or tested for congured parameters. The Signal Vetter™ process in the FPGA detects the parameters
chosen by the user using either the front panel controls or through the Avenue PC or Touch Screen
menus. Each of the chosen aspects are monitored independently, and when they fail to meet the
vetted standard, a fault condition is issued. Fault conditions can be monitored with an external alarm
system or other device through the 15-pin Control connector on the corresponding rear backplane
connector. The Form C relays status outputs from this connector can be monitored by a device to
show Primary and Secondary signal status and the current position of the protect switch (Primary or
Secondary).
Two GPI Override Inputs are available to allow changing switch position in response to triggers from
an external source. This can be used to manually reset the switch after the Primary has recovered from
a fault condition or set to respond to a signal state from an external device to trigger a switch.
The on-board CPU can monitor and report module ID information (slot location, software version
and board revision), and power status to the optional frame System Control module. This information
can be accessed by the user or set to register an alarm if desired using the remote control options
available.
Every function and parameter on the module can be controlled from an Avenue Touch Screen Control
Panel or the Avenue PC Control Application. Memory registers can be used to save the complete
conguration of the module, making it easy to change instantly between dierent congurations.
Modules at software version 2.2.0 or later support SNMP (Simple Network Management Protocol)
monitoring. For each applicable signal processing module, module, signal, and reference status are
reported. For complete details on using SNMP monitoring, refer to the Avenue System Overview in the
manual that accompanies each frame.
7160 HD/SD/ASI/310 Protection DA, portrait layout
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7160-7
Model 7160 HD/SD/ASI/310 Protection DA
Rcvr/EQ
Deserializer
& EDH Processor
Primary
Loopback
Content
Analyzer
Protection
Watchdog
GPI Inputs
Sel Sec
Sel Pri
Switch Position
GPI Override Inputs
Status Logging
Avenue System Control
Secondary Fail
Primary Fail
Common
Serial Port
Form C
Relay
Alarm Outputs
Backplane
Interface
Module Control System
Decision Arbitration
Reclocker
Relay
Rcvr/EQ
Secondary
Loopback
HD/SD
Primary Input
Relay
Protected
Output
(Fail-safe)
Protected
Outputs
(5 each)
HD/SD
Secondary Input
Reclocker
7160 HD/SD/ASI/310 Protection DA, landscape layout
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7160-8
Model 7160 HD/SD/ASI/310 Protection DA
7160
Protect Switch
Primary
Secondary
Feed from program
provider or network
SDI
Avenue
7420
SDI
“Trouble
Slide”
Program feed to air
SDI
APPLICATIONS
Auto-Switched Trouble Slide Application
In the example below, the main program feed is input to the 7160’s primary input. The secondary
input is from a logo inserter and is a “Please stand by” graphic.
In the event that the provider’s program feed is not present, the 7160 automatically switches to the
secondary “Trouble slide” feed.
Auto-switching “trouble slide” feed with 7160 Module
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7160-9
Model 7160 HD/SD/ASI/310 Protection DA
Master
Control
7160
Protect Switch
HD SDI
Control
Alarm Outputs
Video
Server
(Backup)
SD SDI
Primary
Secondary
7900
Up/Down/
Cross
Converter
HD SDI
or
SD SDI
HD SDI
or
SD SDI
720p
To Transmitter
Auto-Switched Upconversion Application
The diagram below shows a typical use for the 7160 module, where it is used in conjunction with the
7900 Up/Down/Cross Converter module to form a fully-redundant, auto-switched conversion chain.
The Primary input is backed up with a Secondary input from a video server.
The 7160 Protection Switch can accept dierent types of signals on its two inputs. The 7160 autosenses and reports what type of signal it is receiving: HD SDI, SD SDI, ASI or SMPTE 310M.
Here, an HD SDI signal is fed to the Primary input while an SD SDI signal is fed to the Secondary input.
If the HD SDI signal is bad, and the 7160 switches to the SD SDI signal, SD SDI will be output.
The 7900 Up/Down/Cross Converter shown above accepts an SD SDI or HD SDI signal. The user
sets the 7900 to the desired output type. In this example, the 7900 is set to output HD 720p. If the
incoming signal is 720p, the signal simply passes to the output. If the incoming signal is 1080i, the
7900 cross-converts the signal and outputs 720p. If the incoming signal is SD SDI, the 7900 upconverts
the signal and outputs HD 720p.
Relay circuits accessible from the 15-pin D Control connector on the rear backplane can be connected
to alarms for monitoring Primary status and switch position.
Redundant Auto-Switched Conversion with 7160 Module
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7160-10
Model 7160 HD/SD/ASI/310 Protection DA
7160 PDA
Secondary In
Sec Loop Out
Out 6
Pri Loop Out
Primary In
Control
Out 5
Out 4
Out 3
Out 2
Fail-safe Out
Control
7160 PS
Pri Loop Out
Primary InFail-safe OutOut 3Out 5
Sec Loop Out
Out 2Out 4Out 6
Secondary In
PIN FUNCTION
1
1
6
11
5
10
15
Pri NC
Control
2 Pri NO
3
4 Pri Com
5
6
7
8
9 Prot NC
10 Prot NO
11 Prot Com
12 Pri Sel
13
14 Sec Sel
15
3RU and 1RU Backplane Diagrams
Connect the secondary (backup)
digital signal to the Secondary In
BNC and loop the Sec Loop Out
BNC to another destination in the
facility if needed.
Connect the Protect Out
BNCs to destinations.
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Connect Fail-safe Out to the
nal destination.
Connect the primary digital
signal to the Primary In BNC
and loop the Pri Loop Out
BNC to another destination in
the facility if necessary.
Pinouts for the 15-pin Control
connector for status monitoring
and GPI inputs appear in the table
at left.
3RU Backplane
1RU Backplane
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Model 7160 HD/SD/ASI/310 Protection DA
Status and Alarm Cabling
In addition to full monitoring and access through the control system, the 7160 module provides
contact closure status indications through the 15-pin D Control connector on the corresponding rear
slot of the frame. These connections can drive an alarm system or other external monitoring devices,
including LEDs. Two override GPI Inputs can also be accessed through the connector. Pinouts for the
status monitoring are given in the preceding illustration.
Form C relay contacts provide both NO (Normally Open) and NC (Normally Closed) switching to
indicate fault status of the Primary and Secondary inputs and the protection switch output. Both
the NO and NC contacts are simultaneously available on the Control connector. Each output is
independently strappable to provide Ground, current limited +5V (1k resistor), or a Common which
appears on the D connector.
The three relay contacts provide the following status reporting:
Primary Good or Failed• – indicates Primary input status as Good when NO contact is active
(switched to Common).
Secondary Good or Failed• – indicates Secondary input status as Good when NO contact is
active (switched to Common).
Switch Position• – indicates the position of the protect switch as either Primary or Secondary
selected. The normal position corresponds to the Primary feeding the input.
An individual common is provided to each of the relays. For each of the three status relays there is a
3-position jumper on the module which congures the common signal that will be used by that relay.
The choices are as follows:
COM• – uses the user-provided common signal from the Control connector.
+5• – provides a +5V signal through a 1k resistor to the relay common.
Gnd• – uses ground as the relay common.
Because both the NO and NC connections are provided, it is possible to have independent status lines
for each of the two states of a status signal. For example, if the jumper is set to +5V, the Primary NO
output will source +5V when the relay is in the normal position (Signal Failed) and the Primary NC
output will source the +5V when the relay is closed (Signal Good). Additionally, in the case of selecting
+5V as the common, the 1k resistor on the module will act as a current limiter, allowing the direct
connection of ordinary LEDs to each of these output pins. A green LED could be connected to the NC
output and a red LED to the NO output. This would provide complete and explicit indication to the
operator as to the signal status.
Also available through the Control connector are two Override GPI inputs that when closed to ground,
will force the switch to either Primary or Secondary. The GPI inputs are edge-triggered on a negative
pulse, or simply a falling edge. These inputs may also be used to switch back to the Primary after a
fault has cleared.
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Model 7160 HD/SD/ASI/310 Protection DA
MODULE CONFIGURATION AND CONTROL
The conguration parameters for each Avenue module must be selected after installation. This can
be done remotely using one of the Avenue remote control options or locally using the module front
panel controls. Each module has a REMOTE/LOCAL switch on the front edge of the circuit board
which must rst be set to the desired control mode.
The conguration parameter choices for the module will dier between Remote and Local modes.
In Remote mode, the choices are made through software and allow more selections. The 7160
Parameter Table on the following page summarizes and compares the various conguration
parameters that can be set remotely or locally and the default/factory settings. It also provides the
default User Levels for each control. These levels can be changed using the Avenue PC application.
If you are not using a remote control option, the module parameters must be congured from the
front panel switches. Parameters that have no front panel control will be set to a default value. The
Local switches are illustrated in the Front Panel Controls and Indicators section following the 7160
Parameter Table.
Avenue module parameters can be congured and controlled remotely from one or both of the
remote control options, the Avenue Touch Screen or the Avenue PC Application. Once the module
parameters have been set remotely, the information is stored on the module CPU. This allows
the module be moved to a dierent cell in the frame at your discretion without losing the stored
information. Remote conguration will override the switch settings on the front edge of the module.
For setting the parameters remotely using the Avenue PC option, refer to the Avenue PC Remote
Conguration section of this document.
For setting the parameters remotely using the Avenue Touch Screen option, refer to the Avenue
Touch Screen Remote Conguration section of this document.
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7160-13
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