evertz 7700 Series User manual

7700 MultiFrame Manual
7735AVC-LB Video Composite Encoder and Audio DAC with SoftSwitch
Revision 1.6 7735AVC-LB - i
TABLE OF CONTENTS
1. OVERVIEW.......................................................................................................................... 1
1.1. FUNCTIONAL DESCRIPTION..................................................................................................2
2. INSTALLATION................................................................................................................... 3
2.1. VIDEO CONNECTIONS............................................................................................................4
2.2. GENLOCK REFERENCE..........................................................................................................4
2.3. AUDIO AND AUX I/O................................................................................................................4
2.3.1. Analog Audio Connections...........................................................................................5
2.3.2. General Purpose Inputs and Outputs...........................................................................6
2.3.3. RS-232 Serial Port Connections ..................................................................................7
2.4. INSTALLING THE BULKHEAD BREAKOUT PANEL..............................................................7
3. SPECIFICATIONS ............................................................................................................... 8
3.1. SERIAL DIGITAL VIDEO INPUT ..............................................................................................8
3.2. SERIAL DIGITAL VIDEO OUTPUT ..........................................................................................8
3.3. GENLOCK INPUT.....................................................................................................................8
3.4. ANALOG VIDEO OUTPUT .......................................................................................................8
3.5. ANALOG AUDIO OUTPUT.......................................................................................................9
3.6. AES AUDIO OUTPUTS.............................................................................................................9
3.7. GENERAL PURPOSE IN/OUT..................................................................................................9
3.8. CONTROL AND DATA LOGGING SERIAL PORT ..................................................................9
3.9. ELECTRICAL..........................................................................................................................10
3.10. PHYSICAL...............................................................................................................................10
4. STATUS LEDS................................................................................................................... 11
4.1. MODULE STATUS LEDS........................................................................................................11
4.2. AUDIO STATUS LEDS............................................................................................................11
5. OUTPUT TIMING CALIBRATION PROCEDURE.............................................................. 12

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5.1. CALIBRATE TIMING OF THE OUTPUT VIDEO.....................................................................12
5.2. VERIFY TIMING OF THE INPUT VIDEO ................................................................................12
6. AUDIO ALARM CALIBRATION PROCEDURE.................................................................13
6.1. CALIBRATE AUDIO SILENCE DETECTION .........................................................................13
6.2. CALIBRATE AUDIO PHASE REVERSAL DETECTION........................................................13
6.3. CALIBRATE AUDIO MONO DETECTION..............................................................................14
6.4. DEFINE THE AUDIO FAULT CONDITION(S) ........................................................................14
7. ON SCREEN MENUS.........................................................................................................15
7.1. NAGIVATING THE ON SCREEN MENU SYSTEM.................................................................15
7.2. CHANGING TEXT FIELDS .....................................................................................................16
7.3. ON SCREEN DISPLAY – MAIN MENU ..................................................................................16
7.4. CONFIGURING THE AUDIO CONTROLS..............................................................................17
7.4.1. Selecting the Audio Source to Monitor.......................................................................18
7.4.2. Swapping the Audio Channels of a Channel Pair ......................................................18
7.4.3. Selecting Whether a Channel Pair Is Monitored In Stereo Or Mono..........................18
7.4.4. Setting the Analog Peak Audio Output Level for a Channel Pair...............................18
7.4.5. Setting the Analog Levels - Fine Adjust .....................................................................18
7.5. CONFIGURING THE VIDEO AND SOURCE ID CONTROLS ................................................19
7.5.1. Controlling the Composite Analog Video Parameters................................................19
7.5.1.1. Setting the NTSC Setup Pedestal..........................................................................19
7.5.1.2. Setting the Line 21 Setup Pedestal........................................................................20
7.5.1.3. Setting the Composite Display Mode – Colour or Monochrome.............................20
7.5.1.4. Setting the Analog Video Output Level ..................................................................20
7.5.1.5. Setting the Hue.......................................................................................................20
7.5.1.6. Setting the Saturation.............................................................................................20
7.5.1.7. Setting the Contrast................................................................................................20
7.5.1.8. Setting the Brightness............................................................................................21
7.5.2. Setting the Input Video Standard ...............................................................................21
7.5.3. Loss of Video..............................................................................................................21
7.5.4. Setting the VITC Line Number – 525 Line Video .......................................................21
7.5.5. Setting the VITC Line Number – 625 Line Video .......................................................21
7.5.6. Setting the PESA Source ID Line Number – 525 Line Video.....................................21
7.5.7. Setting the PESA Source ID Line Number – 625 Line Video.....................................22
7.5.8. Setting the Horizontal Phase of the Output Video – 525 Line Video..........................22
7.5.9. Setting the Horizontal Phase of the Output Video – 625 Line Video..........................22
7.5.10. Monitoring the Horizontal Delay between the Input and Output Video .....................22
7.5.11. Setting the Vertical Phase of the Output Video – 525 Line Video.............................22
7.5.12. Setting the Vertical Phase of the Output Video – 625 Line Video.............................22

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Revision 1.6 7735AVC-LB - iii
7.5.13. Monitoring the Vertical Delay between the Input and Output Video..........................22
7.5.14. Setting the Colour Frame sequence of the Analog Output Video – 525 Line Video.23
7.5.15. Setting the Colour Frame sequence of the Analog Output Video – 625 Line Video.23
7.6. GPO CONFIGURATION..........................................................................................................24
7.6.1. Setting the General Purpose Output Active State......................................................24
7.6.2. Configuring what Condition will Activate the General Purpose Output ......................24
7.6.3. Frame Status Fault Trigger Condition........................................................................24
7.7. FAULT DEFINITIONS .............................................................................................................25
7.7.1. Setting Up How a Fault Is Triggered and How It Is Presented...................................26
7.7.1.1. Fault Status............................................................................................................26
7.7.1.2. Fault 1 Mode ..........................................................................................................26
7.7.1.3. Setting the Duration of the Fault Condition ............................................................26
7.7.1.4. Determining What Items Will Generate the Fault Condition...................................26
7.7.2. Setting Video Invalid Durations..................................................................................27
7.7.3. Error Detection and Handling (EDH) Error Duration ..................................................28
7.7.4. Detecting Audio Over Level Faults.............................................................................28
7.7.4.1. Setting the Audio Over Level..................................................................................28
7.7.4.2. Setting the Audio Over Duration.............................................................................29
7.7.5. Detecting Audio Silence Faults ..................................................................................29
7.7.5.1. Setting the Audio Silence Level..............................................................................29
7.7.5.2. Setting the Audio Silence Duration.........................................................................29
7.7.6. Detecting Audio Phase Reversal Faults.....................................................................29
7.7.6.1. Setting the Audio Phase Reversal Level................................................................30
7.7.6.2. Setting the Audio Phase Reversal Duration...........................................................30
7.7.7. Detecting Audio Mono Faults.....................................................................................30
7.7.7.1. Setting the Audio Mono Threshold Level ...............................................................31
7.7.7.2. Setting the Audio Mono Duration ...........................................................................31
7.7.8. Detecting Loss of Primary Captioning........................................................................31
7.7.9. Detecting Loss of Program Rating Duration...............................................................31
7.7.10. Detecting Picture Freeze ..........................................................................................31
7.7.10.1.Setting the Picture Noise Level..............................................................................31
7.7.10.2.Setting the Picture Freeze Duration.......................................................................32
7.7.10.3.Optimizing the Picture Noise Level and Picture Freeze Duration Parameters.......32
7.7.11. Detecting Picture Black Duration ..............................................................................33
7.8. UTILITIES................................................................................................................................33
7.8.1. Accessing Information About this Module and its Firmware.......................................33
7.8.2. Data Logging..............................................................................................................33
7.8.2.1. Setting the Status Poll Polling Rate........................................................................34
7.8.2.2. Outputting The Module Status At Any Time...........................................................34
7.8.2.3. Selecting the Fault Log Event Stamp Mode...........................................................34
7.8.2.4. Enabling the Fault Logging Output.........................................................................34
7.8.2.5. Enabling the Status Logging Output.......................................................................34
7.8.2.6. Setting the AVC’s Data Logging ID........................................................................35
7.8.2.7. Setting the Event Stamp Clock...............................................................................35
7.8.3. Saving And Recalling AVC Configurations.................................................................35
7.8.3.1. Storing AVC Configurations to the User Presets....................................................35
7.8.3.2. Recall AVC Configurations from the User Presets.................................................36
7.8.4. Initiating a Software Upgrade.....................................................................................36

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7.8.5. Restoring the AVC to its Factory Default Configuration.............................................36
7.9. CLEAR FAULTS AND PEAKS ...............................................................................................36
8. CONFIGURING THE AVC USING THE CONFIGSET SOFTWARE..................................37
9. CONTROLLING THE 7735AVC-LB FROM THE COMMUNICATIONS PORT..................38
10. JUMPERS...........................................................................................................................39
10.1. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED BY THE GLOBAL FRAME
STATUS...................................................................................................................................39
10.2. CONFIGURING THE MODULE FOR FIRMWARE UPGRADES............................................40
11. MENU QUICK REFERENCE..............................................................................................41
Figures
Figure 1-1: 7735AVC-LB Block Diagram ............................................................................................................ 2
Figure 2-1: 7735AVC-LB Rear Panel.................................................................................................................. 3
Figure 2-2: GPI Circuitry...................................................................................................................................... 6
Figure 2-3: GPO Circuitry.................................................................................................................................... 6
Figure 2-4: Breakout Panel for Wiring Audio and Aux Connections................................................................... 7
Figure 10-1: Location of Jumpers on 7700PB2 Boards.................................................................................... 39
Tables
Table 2-1: Audio and Aux I/O Pinout................................................................................................................... 4
Table 2-2: Audio and Aux I/O Physical Layout.................................................................................................... 5
Table 2-3: Analog Audio to XLR Connection ...................................................................................................... 5
Table 4-1: Audio Group Status LEDs................................................................................................................ 11
Table 7-1: Possible Error Conditions to Produce a Fault.................................................................................. 27

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7735AVC-LB Video Composite Encoder and Audio DAC with SoftSwitch
Revision 1.6 7735AVC-LB - v
REVISION HISTORY
REVISION DESCRIPTION DATE
1.0 Original Version Feb 01
1.1 Added features for LB (Line Buffer) version Mar 01
1.2 Incorporated module features into one 7735AVC-LB document, Apr 01
“7735AVC” version is discontinued
1.3 Added references to re-embedded audio on output SDI stream Jun 01
1.4 Minor modifications Oct 01
1.4.1 Figure 2 Updated to show 15 pin D connector Feb 02
1.4.2 Analog Video Specs updated Mar 02
1.5 Added Video Invalid Duration control, changed picture freeze and Apr 02
black duration values, added About … Menu item to Utilities menu
1.6 Updated card edge menu items Jun 08
Information contained in this manual is believed to be accurate and reliable. However, Evertz assumes no responsibility for the use thereof nor for
the rights of third parties, which may be affected in any way by the use thereof. Any representations in this document concerning performance of
Evertz products are for informational use only and are not warranties of future performance, either expressed or implied. The only warranty offered
by Evertz in relation to this product is the Evertz standard limited warranty, stated in the sales contract or order confirmation form.
Although every attempt has been made to accurately describe the features, installation and operation of this product in this manual, no warranty is
granted nor liability assumed in relation to any errors or omissions unless specifically undertaken in the Evertz sales contract or order confirmation.
Information contained in this manual is periodically updated and changes will be incorporated into subsequent editions. If you encounter an error,
please notify Evertz Customer Service department. Evertz reserves the right, without notice or liability, to make changes in equipment design or
specifications.

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7700 MultiFrame Manual
7735AVC-LB Video Composite Encoder and Audio DAC with SoftSwitch
Revision 1.6 7735AVC-LB - 1
1. OVERVIEW
The 7735AVC-LB is a 10-bit component SDI to composite analog converter with line synchronizing buffer,
audio de-multiplex and digital to analog converter. The 7735AVC-LB is also equipped with Evertz’s
SoftSwitch™ technology, which mitigates audio pops during hot-switching while maintaining consistent
video and audio sequences and formats. In addition, the 7735AVC-LB cards are VistaLINK®enabled
offering local and remote monitoring as well as control and configuration capabilities.
Model Description Slots
7735AVC-LB SDI to Composite Analog Encoder with Line Synchronizing
buffer and VistaLINK®Audio and Fault Monitoring 2
Features:
• One SDI 525 or 625, 270 Mb/s component digital video input
• Two SDI 525 or 625, 270 Mb/s component digital video outputs
• Two composite analog video outputs
• Genlock reference loop input for proper timing and colour framing
• Line synchronizing buffer allows re-timing of output video up to one line
• Embedded audio on input is de-embedded and re-embedded after re-timing
• Hot-switch audio pop mitigation through SoftSwitch™ technology
• One group (4 channels of audio) is de-multiplexed from the incoming digital video
• 4 adjustable analog audio outputs can be set so both are a mono mix of the selected channel pair
• Two pairs of stereo balanced analog outputs and 2 AES digital audio outputs
• VistaLINK®monitoring of an extensive list of error and fault conditions including freeze or black
video, etc.
• RS-232 data logging port to log fault conditions
• Two GPI and one GPO to control and report user definable fault conditions through high density
DB15 connector
• Bulkhead panel is available to facilitate wiring to the high density DB15 connector (up to 10
7735AVC-LB modules can be wired to each bulkhead panel)
• Comes with ConfigSet software to upload or download board configurations to a PC. Setups can
be copied from one module to another to facilitate configuration of a large number of modules

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1.1. FUNCTIONAL DESCRIPTION
On the 7735AVC-LB, serial digital video is converted to parallel and the embedded audio is de-
multiplexed. The video is clocked into a line buffer which is then clocked out of the line buffer in time with
the reference timing. Audio is re-multiplexed and sent to two separate serial digital outputs. The video
also goes to the high quality composite encoder, where it is properly colour framed to the reference input
and then output on two separate BNCs. The de-multiplexed audio is converted to analog and delivered
out to the high density DB-15 connector on the rear of the card. The output timing and colour frame may
be offset from the reference through menu settings.
General-purpose inputs are used for remote control of some features and general-purpose outputs are
generated under error conditions.
SD Serial Input
270 Mb/s De-
Serializer
VBI
Decoders
OSD
Memory
Mixer
CPU
4 Channel Balanced
Analog Audio Out
AES Audio Out
GPI/O
FillKey
Audio
Demux
Audio D/A
and
AES/EBU
Formatter
Group Present
GPI/O
To/From
SNMP
Network
10 Bit
Composite
Encoder
Broadcast Quality
NTSC or PAL
Composite Output
EDH
&
Serializer
Cable
Driver
Serial Output
270 Mb/s
with embedded Audio
Video
Present Audio Present Module
Status
Card
Edge
Control
Line Timing
Buffer Audio
Mux
Sync
Processing
Colour Black
Genlock Input Colour Frame
Timing
Sync
Timing
Audio
SoftSwitch™
Figure 1-1: 7735AVC-LB Block Diagram

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Revision 1.6 7735AVC-LB - 3
2. INSTALLATION
The 7735AVC-LB version comes with a companion rear plate that has 7 BNC connectors and one high
density female DB-15, occupying two slots in the 7700FR frame. Figure 2-1 provides an illustration of the
rear panel. For information on mounting the rear plate and inserting the module into the frame see section
3 of the 7700FR chapter.
Figure 2-1: 7735AVC-LB Rear Panel

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2.1. VIDEO CONNECTIONS
Connect a source of component digital 525 or 625 line 270 Mb/s video to the BNC labeled SDI INPUT.
Analog video output is available on the ANALOG OUTPUT BNCs. Two SDI outputs are also available
through the SDI OUTPUT BNCs.
2.2. GENLOCK REFERENCE
For proper synchronization of the output video, the 7735AVC-LB must be locked to a stable 1 volt p-p
composite analog colour black source, applied to the GENLOCK video loop. The internal sync separator
has a high impedance input tapped off the loop through, therefore, the video signal must be properly
terminated at the end of the line.
"
If Genlock video is not present, the input video is used to determine the output
timing. When the Genlock video is applied or removed, the output video timing will
suddenly jump to the new timing phrase, creating video and audio artifacts.
2.3. AUDIO AND AUX I/O
The audio outputs are available on a female high density DB-15 connector labeled "Audio and Aux I/O.”
Table 2-1 shows the pin-out of the connector:
Name Description DB-15
A1- Audio channel 1 - 4
A1+ Audio channel 1 + 5
A2- Audio channel 2 - 14
A2+ Audio channel 2 + 15
A3- Audio channel 3 - 9
A3+ Audio channel 3 + 10
A4- Audio channel 4 - 12
A4+ Audio channel 4 + 13
AES1 Single ended AES output 1 11
AES2 Single ended AES output 2 7
GPI1 General Purpose Input 1 8
GPI2 General Purpose Input 2 1
GPO1 General Purpose Output 1 3
Tx RS-232 (output) 2
Rx RS-232 (input) 6
Ground Shell
Table 2-1: Audio and Aux I/O Pinout

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Revision 1.6 7735AVC-LB - 5
The physical layout is as follows:
6Rx
1 GPI2 7 AES2 11 AES1
2 Tx 8 GPI1 12 A4-
3 GPO1 9 A3- 13 A4+
4 A1- 10 A3+ 14 A2-
5 A1+ 15 A2+
Table 2-2: Audio and Aux I/O Physical Layout
"Connect to the shell for ground.
2.3.1. Analog Audio Connections
Four channels of balanced analog audio are available through this connector. The balanced audio can be
connected to male XLR connectors as follows (standard pin 2 +ve connection):
HD DB-15 XLR
Audio + 2
Audio - 3
Shell 1
Table 2-3: Analog Audio to XLR Connection

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2.3.2. General Purpose Inputs and Outputs
The GPIs are active low with internal pull up resistors (4.7kΩ) to +5V. To make an input active, lower the
signal to near ground potential (i.e. connect to shell or chassis ground). This can be done with a switch,
relay, TTL drive, GPO output or other similar methods. Figure 2-2 illustrates the input circuit for the
General Purpose Inputs:
GND
To Internal
Circuit
4.7 k Ω
GPI
+ 5 Volts
Figure 2-2: GPI Circuitry
The GPO is software programmable active high or low with internal pull up (10kΩ) resistors to +5V. When
the output goes low it is able to sink up to 10mA. When high, the signal will go high (+5V). Do not draw
more than 100µA from the output. Figure 2-3 illustrates the circuit for the General Purpose Output:
From Internal
Circuit
10k Ω
+ 5 Volts
GND
GPO
10 Ω
Figure 2-3: GPO Circuitry

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Revision 1.6 7735AVC-LB - 7
2.3.3. RS-232 Serial Port Connections
The COM port signals are standard RS-232 with no hardware flow control. The directions of the signals
are indicated in Table 2-1. The RS-232 port on the AUDIO AND AUX I/O connector is used for control
and data logging of status and fault conditions. Control and data logging is done with custom software
that communicates with the 7735AVC-LB card using the AVC Control/Status Protocol. For more
information about configuring the data logging output, see sections 7.8.2 and 9.
The RS232 port is also used for extracting and uploading configurations to 7735AVC-LB cards using the
ConfigSet software (included). For more information on ConfigSet see section 8.
2.4. INSTALLING THE BULKHEAD BREAKOUT PANEL
The 7760AVM-BHP Bulkhead breakout panel (an accessory designed for our 7760AVM modules) can
also be used with the 7735AVC-LB cards. It provides the user with a convenient way of connecting the
audio and GPI/O signals into the HD DB-15 connectors on the rear of the modules. This panel occupies
1.5 units of rack space and is designed to be mounted at the rear of the user’s rack panel. The breakout
panel can be used to connect up to ten AVC modules. Each of the ten sets of connectors on the breakout
panel is fitted with two BNCs for AES audio out, two six position terminal strips for the 4 channels of
analog audio, and one six position terminal strip for the GPI/O and RS-232 signals. Figure 2-4 shows one
section of the breakout panel. On the rear of the breakout panels are 10 female HD DB-15 connectors.
To connect the AVC module to the breakout panel, connect the 15 pin extender cables supplied with the
breakout panel between the AUDIO AND AUX I/O connector on the rear of the AVC module and the
appropriate D connector on the breakout panel. The user must make sure to secure the connectors with
the screws supplied. The audio and aux cables can be secured into the removable portion of the terminal
strips using a small screwdriver. The removable part of the terminal strip is inserted into the breakout
panel and secured using the two hold down screws.
Figure 2-4: Breakout Panel for Wiring Audio and Aux Connections

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3. SPECIFICATIONS
3.1. SERIAL DIGITAL VIDEO INPUT
Standard: SMPTE 259M-C – 525 or 625 line component
Connector: 1 BNC per IEC 169-8
Termination: 75 ohm
Equalization: Automatic 200m @ 270 Mb/s with Belden 8281 or equivalent cable
Return Loss: > 15dB up to 270MHz
Embedded Audio: SMPTE 272M-A
3.2. SERIAL DIGITAL VIDEO OUTPUT
Standard: SMPTE 259M-C – 525 or 625 line component. – same as input
Number of Outputs: 2
Connector: BNC per IEC 169-8
Signal Level: 800mV nominal
DC Offset: 0V ±0.5V
Rise and Fall Time: 470ps nominal
Overshoot: <10% of amplitude
Embedded Audio: Same signal as input: SMPTE 272M-A
3.3. GENLOCK INPUT
Type: NTSC (SMPTE 170M) Colour Black 1 V p-p
Connector: 2 BNC per IEC 169-8
Termination: igh impedance loop through
Return loss: >35 dB up to 10 MHz
SNR: > 50dB
Levels: min: 0.5Vp-p, max: 1.5Vp-p
Max Sub-carrier Jitter:< 3degrees
3.4. ANALOG VIDEO OUTPUT
Standard: NTSC, SMPTE 170M
PAL, ITU624-4
Number of Outputs: 2
Connector: BNC per IEC 169-8
Signal Level: 1V nominal (user adjustable from menu)
DC Offset: 0V ±0.02V
Return Loss: > 35dB up to 5MHz
Frequency Response: 0.1dB to 4 MHz, 0.15dB to 5.5 MHz
Differential Phase: < 0.5°(<0.3°typical)
Differential Gain: < 0.5% (<0.3 % typical)
SNR: > 78dB to 5 MHz
Minimum Delay: 3 µsec

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Revision 1.6 7735AVC-LB - 9
3.5. ANALOG AUDIO OUTPUT
Number of Outputs: 4
Type: Balanced analog audio
Connector: Female High Density DB-15
Output Impedance: 33Ω
Sampling Frequency: 48kHz
Signal Level: 0dB FS =>8 to 24dBu (user settable)
NOTE: High impedance loads only (10 kΩ)
Not good for low impedance loads (i.e. 600Ω)
Frequency Response: < ±0.05dB (20Hz to 15kHz)
< ±0.1dB (20Hz to 20kHz)
Dynamic Range: > 84dB RMS
THD+N: > 74dB RMS @ 1kHz, relative to 14dBu
> 63dB RMS @ 20Hz to 20kHz, relative to 14dBu
Crosstalk: < -75dB RMS (20Hz to 20kHz)
3.6. AES AUDIO OUTPUTS
Number of Outputs: 2
Standard: SMPTE 276M, single ended synchronous or asynchronous AES
Connectors: High-density female DB-15
Resolution: 20 bits (from embedded audio)
Sampling Rate: 48 kHz
Impedance: 75 Ohms unbalanced
3.7. GENERAL PURPOSE IN/OUT
Number of Inputs: 2
Number of Outputs: 1
Type: Opto-isolated, active low with internal pull-ups to +5V
Connector: Female High Density DB-15
Signal Level: +5V nominal
3.8. CONTROL AND DATA LOGGING SERIAL PORT
Standard: RS-232
Connector: Female High Density DB-15
Format: As per AVC Control/Status Protocol document – contact factory

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3.9. ELECTRICAL
Voltage: + 12VDC
Power: 12 Watts
EMI/RFI: Complies with FCC Part 15, class A and EU EMC directive
3.10. PHYSICAL
Number of slots: 2

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Revision 1.6 7735AVC-LB - 11
4. STATUS LEDS
4.1. MODULE STATUS LEDs
MODULE STATUS: This Green LED will be on when the module is operating properly.
LOCAL FAULT: This Red LED makes it easy to identify one module in a frame that is missing an
essential input or has another fault.
The LED will blink on and off if the microprocessor is not running.
The LED will be on when there is a fault in the module power supply or a user
configurable error condition exists.
SIGNAL PRESENT:
This Green LED will be on when there is a valid video signal present at the
module SDI input.
AUDIO PRESENT:
This Green LED will be on when the selected audio source is present.
4.2. AUDIO STATUS LEDs
Four LEDs located on the lower end of the module (near the card extractor) indicate which audio groups
are present in the input video. Audio group LED 1 is located closest to the center of the module.
Audio Group LED Colour Audio Group Status
Off No group 1 present on input video.
1 Green Group 1 present on input video.
Off No group 2 present on input video.
2 Green Group 2 present on input video.
Off No group 3 present on input video.
3 Green Group 3 present on input video.
Off No group 4 present on input video.
4 Green Group 4 present on input video.
Table 4-1: Audio Group Status LEDs

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5. OUTPUT TIMING CALIBRATION PROCEDURE
This section contains a detailed description on setting the various Genlock phasing and colour framing
parameters. Items in italics refer to menu items in the 7735AVC-LB. The following description uses 525
line parameters for simplicity of discussion, however calibrating the card for 625 video is identical using
625 line parameters.
5.1. CALIBRATE TIMING OF THE OUTPUT VIDEO
1. Supply the card with the plant's Genlock reference feed. If the user’s Genlock reference is in time and
in the same colour frame sequence with plant timing, the user should not have to adjust the phasing
parameters.
2. Adjust the 525 H phase parameter so that the output video is in time with the plant’s horizontal timing.
3. Adjust the 525 V phase parameter so that the output video is in time with the plant’s vertical timing.
4. Adjust the 525 Colour Frame Offset parameter so that the colour frame sequence of the output video
matches the plant’s colour framing.
5.2. VERIFY TIMING OF THE INPUT VIDEO
1. Supply the card with each of the different video feeds that will be used during operation.
2. The 525 V delay menu item allows the user to see the vertical delay between the input and the output.
Normally this value should be zero. If the vertical delay is not zero, the user will have to adjust the
vertical timing of the input signal.
TIP: A simple method of verifying the vertical timing if the user does not have a waveform monitor
available is to connect a source of video with closed captions encoded on line 21. Connect the output
of the 7735AVC-LB to a closed caption decoder. Adjust the vertical timing of the video signal until the
caption decoder begins reading line 21 captions. (Caption decoders usually must see the caption
signal exactly on line 21 before they will decode anything).
3. The 525 H delay menu item allows the user to see the horizontal delay between the input and the
output. Normally this value should be in the range of 100 to 1500 to permit a sufficient margin in the
line buffer timing to allow for proper synchronization of the video. If the horizontal delay value is
outside this range, the user will have to adjust the horizontal timing of the input signal.

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Revision 1.6 7735AVC-LB - 13
6. AUDIO ALARM CALIBRATION PROCEDURE
This section contains detailed descriptions outlining how to set the various audio warning/error detection
parameters.
Some of the audio alarm detection algorithms are dependent on the state of other audio alarm detectors.
For instance, the mono detection algorithm will not use periods of silence as determined by the silence
detection. For this reason, the following sequence should be used to calibrate the audio alarms. The
items in italics refer to menu items in the AVC. Please refer to section 7.7 for a complete description of
the fault definition menu items.
6.1. CALIBRATE AUDIO SILENCE DETECTION
1. Supply the card with the plant's noisiest audio feed without any audio program material present. This
will be a baseline noise level to calibrate the silence detector.
2. Turn off all sources of errors in a Fault Condition and assign Audio Silence as the only error. Also, be
sure to set the Fault Duration to a small number of frames in order to see when the error condition
disappears.
3. Set the Silence Duration to 0.5 sec to view the results of adjusting the Silence Level parameter without
getting confused by the detection time.
4. Adjust the audio Silence Level until the Fault Condition begins to go active. This will be the noise floor
level. Raise the Silence Level a few dB to make the detector insensitive to this noise level.
5. Set the Silence Duration to a time appropriate to the application. This should be set to a value longer
than the worst case acceptable quiet period.
6.2. CALIBRATE AUDIO PHASE REVERSAL DETECTION
1. Supply the card with a stereo signal that has the phases reversed. Ensure that the material is typical of
normal content for this channel.
2. Turn off all sources of errors in a Fault Condition and assign Phase Reversal as the only error. Also,
make sure that the Fault Duration is set to a small number of frames in order to see when the error
condition disappears.
3. Set the Phase Reversal Duration to 0.5 sec to view the results of adjusting the Phase Reversal Level
without getting confused by the detection time.
4. Adjust the Phase Reversal Level so that the Fault Condition detects the phase reversal.
5. Set the Phase Reversal Duration to a time period appropriate to the application.
Periods of silence (below the Silence Level) will extend this duration. In other
words, periods without audio content are not included in the phase reversal
detection.
Stereo material with long periods of dissimilar left/right content (for example,
music with plenty of panning) may cause the phase reversal detector to fire. It
is best to set the Phase Reversal Duration to a value larger than what would be
expected.

7700 MultiFrame Manual
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7735AVC-LB - 14 Revision 1.6
6.3. CALIBRATE AUDIO MONO DETECTION
1. Supply the card with a stereo signal that originated from mono material and that has a large amount of
uncorrelated noise added to each channel. This will allow the user to set the Mono Threshold to a
value that will detect the mono condition in the presence of noise.
Make sure that the material is in-phase. Mono material will not be detected if it is
out of phase.
2. Turn off all sources of errors in a Fault Condition and assign Mono as the only error. Also, make sure
that the Fault Duration is set to a small number of frames in order to see when the error condition
disappears.
3. Set the Mono Duration to 0.5 sec to view the results of adjusting the Mono Threshold Level without
getting confused by the detection time.
4. Adjust the Mono Threshold Level so that the Fault Condition detects the mono material in the
presence of noise.
5. Set the Mono Duration to a time period appropriate to the application.
Periods of silence (below the Silence Level) will extend this duration. In other
words, periods without audio content are not included in the mono detection.
Stereo material with long periods of similar left/right content (i.e. talking heads
in a news cast) may cause the mono detector to fire. It is best to set the Mono
Duration to a value larger than what the user would expect.
6.4. DEFINE THE AUDIO FAULT CONDITION(S)
1. A Fault Condition is defined as a group of one or more problems grouped together that will create a
fault when any one of the problems exist. Decide what grouping of error conditions will generate a fault
by setting the appropriate condition to Yes in the Fault Condition menu.
2. Set the Fault Duration to either Until Reset or to a time value. This is how long the condition will stay
active after the conditions generating the fault go away.
3. Configure a Fault Message. Enter the text to display on screen, its H and V position, and its
characteristics (opacity, colour, etc).
4. Assign the Fault Condition to an output contact closure (GPO) if it is desired.