evertz 7700 Series User manual

7700 MultiFrame Manual
7707CVTA Composite Video and Analog Audio Fiber Transmitter
Revision 1.2
TABLE OF CONTENTS
1. OVERVIEW.......................................................................................................................................... 1
2. INSTALLATION................................................................................................................................... 4
2.1. CARE AND HANDLING OF OPTICAL FIBER............................................................................ 5
2.1.1. Safety.............................................................................................................................. 5
2.1.2. Assembly......................................................................................................................... 5
2.1.3. Labeling........................................................................................................................... 6
2.1.4. Handling and Connecting Fibers..................................................................................... 6
3. SPECIFICATIONS............................................................................................................................... 7
3.1. ANALOG VIDEO INPUT............................................................................................................. 7
3.2. ANALOG VIDEO OUTPUT (7707CVTA ONLY)......................................................................... 7
3.3. ANALOG AUDIO INPUTS.......................................................................................................... 7
3.4. OPTICAL OUTPUT..................................................................................................................... 8
3.5. SYSTEM PERFORMANCE ........................................................................................................ 8
3.6. ELECTRICAL ............................................................................................................................. 8
3.7. COMPLIANCE............................................................................................................................ 8
3.8. PHYSICAL.................................................................................................................................. 8
4. STATUS INDICATORS AND DISPLAYS ........................................................................................... 9
4.1. STATUS INDICATOR LEDS....................................................................................................... 9
4.2. DOT-MATRIX DISPLAY............................................................................................................. 9
4.2.1. Setting the Headphone Jack Channel........................................................................... 10
4.2.2. Displaying the Video Standard...................................................................................... 10
5. CARD EDGE MENU SYSTEM.......................................................................................................... 11
5.1. NAVIGATING THE MENU SYSTEM......................................................................................... 11
5.2. TOP LEVEL MENU STRUCTURE............................................................................................ 11
5.3. SETTING THE VIDEO CONTROLS.......................................................................................... 12
5.3.1. Setting the Cable Equalization...................................................................................... 12
5.4. SETTING THE AUDIO CONTROLS......................................................................................... 12
5.4.1. Configuring Audio Presence Detection......................................................................... 12

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7707CVTA Composite Video and Analog Audio Fiber Transmitter
Revision 1.2
5.4.1.1. Procedure to Calibrate Audio Presence Detection......................................... 13
5.5. CHANGING THE ORIENTATION OF THE TEXT ON THE DISPLAY....................................... 13
5.6. RESTORING THE FACTORY SETTINGS................................................................................ 13
6. CARD EDGE CONTROLS ................................................................................................................ 14
6.1. MONITORING THE AUDIO ...................................................................................................... 14
7. JUMPERS.......................................................................................................................................... 15
7.1. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED
BY THE GLOBAL FRAME STATUS ........................................................................................ 15
7.2. SELECTING WHETHER MODULE WILL BE CONTROLLED FROM THE
LOCAL CONTROLS OR THROUGH THE VISTALINK®INTERFACE ...................................... 16
7.3. CONFIGURING THE MODULE FOR FIRMWARE UPGRADES.............................................. 16
8. VISTALINK®REMOTE MONITORING/CONTROL........................................................................... 17
8.1. WHAT IS VISTALINK®?............................................................................................................... 17
8.2. VISTALINK®MONITORED PARAMETERS .............................................................................. 18
8.3. VISTALINK®CONTROLLED PARAMETERS ........................................................................... 18
8.4. VISTALINK®TRAPS.................................................................................................................... 19
Figures
Figure 1-1: 7707CVTA Block Diagram..................................................................................................................2
Figure 1-2: 7707CVTA-2 Block Diagram ..............................................................................................................3
Figure 2-1: 7707CVTA Rear Panels .....................................................................................................................4
Figure 2-2: Reproduction of Laser Certification and Identification Label..............................................................6
Figure 7-1: Location of Jumpers and Card Edge Controls .................................................................................15
Tables
Table 8-1: VistaLINK®Monitored Parameters.....................................................................................................18
Table 8-2: VistaLINK®Controlled Parameters....................................................................................................18
Table: 8-3: VistaLINK®Fault Status Parameters – Traps...................................................................................19

7700 MultiFrame Manual
7707CVTA Composite Video and Analog Audio Fiber Transmitter
Revision 1.2
REVISION HISTORY
REVISION DESCRIPTION DATE
1.0 Initial Release May 06
1.1 Added Reference Aug 08
1.2 Removed some featured items Feb 09
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 effected 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 express 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.

7700 MultiFrame Manual
7707CVTA Composite Video and Analog Audio Fiber Transmitter
Revision 1.2
Never look directly into an optical fiber. Non-reversible damage to the eye can
occur in a matter of milliseconds.
"
Do not hook up the 7707CVTA series DWDM cards and any 7707CVRA series cards
directly with a short fiber optic cable. The 7707CVTA series DWDM card produces
+7dBm of power which will damage the receiver if connected directly.
"
Do not hook up the 7707CVTA series cards that output more than -7dBm of power
(see 7707CVTA series specifications for output power of various laser types) and
7707CVRA series high sensitivity (-H versions) receiver cards directly with a short
fiber optic cable. The 7707CVTA series cards that produce more than -7dBm of
power will damage the receiver if connected directly.

7700 MultiFrame Manual
7707CVTA Composite Video and Analog Audio Fiber Transmitter
Revision 1.2 7707CVTA-1
1. OVERVIEW
The 7707CVTA is a VistaLINK®enabled, composite analog video and analog audio fiber transmitter for
broadcast quality video and audio signals. This single card module accepts one NTSC or PAL analog
video input with up to four analog audio inputs, performs analog to digital conversion and transmits them
over a single fiber. The companion 7707CVRA Composite Video and Analog Audio fiber receiver
demultiplexes the signals and converts them back to analog form.
The 7707CVTA-2 Dual Composite Video and Analog Audio fiber transmitter is a dual channel version that
digitizes and multiplexes 2 analog video and up to four analog audio signals and converts them to an
optical signal for transmission. The companion 7707CVRA-2 Dual Composite Video and Analog Audio
fiber receiver accepts a fiber optic input, demultiplexes the signals, performs D to A conversion and
outputs 2 NTSC or PAL analog video signals and up to four balanced analog audio signals.
The fiber output is available in an assortment of optical wavelengths, accommodating standard or CWDM
transmission schemes. (7707CVTA shown, 7707CVTA-2 similar)
7707CVTA13 1310 nm FP -7dBm output, suitable for distances up to 50 Km
7707CVTA13M 1310 nm FP 0dBm output, suitable for distances up to 75 Km
7707CVTA15 1550 nm DFB 0dBm output, suitable for distances up to 75 Km
There are several versions with built in isolators specifically suited to coarse wave division multiplexing
(CWDM) applications. These versions all have 0dBm output and are suitable for distances up to 75 Km.
7707CVTA27 1270 nm DFB
7707CVTA29 1290 nm DFB
7707CVTA31 1310 nm DFB
7707CVTA33 1330 nm DFB
7707CVTA35 1350 nm DFB
7707CVTA37 1370 nm DFB
7707CVTA43 1430 nm DFB
7707CVTA45 1450 nm DFB
7707CVTA47 1470 nm DFB
7707CVTA49 1490 nm DFB
7707CVTA51 1510 nm DFB
7707CVTA53 1530 nm DFB
7707CVTA55 1550 nm DFB
7707CVTA57 1570 nm DFB
7707CVTA59 1590 nm DFB
7707CVTA61 1610 nm DFB
There are several versions with built in isolators specifically suited to dense wave division multiplexing
(DWDM) applications. The DWDM versions are suitable for distances >120 km @ 270 Mb/s (for DWDM
applications contact factory).
7707CVTADyyy DWDM DFB laser output, yyy – ITU channel number
The 7707CVTA and 7707CVTA-2 occupy one card slot and can be housed in either a 1RU frame, which
will hold up to three modules, or a 3 RU frame, which will hold up to 15 modules.

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7707CVTA Composite Video and Analog Audio Fiber Transmitter
7707CVTA-2 Revision 1.2
Features:
•Single card slot including fiber optic converter
•Supports both NTSC and PAL video
•Broadcast quality analog video and audio performance
•High video signal to noise ratio
•Superior digital data transmission methods
•Video loop-through for additional signal distribution or monitoring (7707CVTA only)
•Signal transport over fiber is uninterrupted by loss of input video or audio feeds
•Low Audio to Video latency
•Signal and status monitoring via four-digit card-edge display, or through SNMP and VistaLINK®
enabled capability
•Adjustable gain equalization for up to approximately 300m of Belden 1694 coaxial cable
•Fully Hot-swappable from front of frame with no fiber disconnect/reconnect required
•Supports Single mode (8-10 µm) and Multi-mode (50/62.5 µm) fiber optic cable
•Optical output wavelengths of 1310nm, 1550nm, up to sixteen CWDM wavelengths and up to 40
DWDM wavelengths
Analog
Video
Input
4 Balanced
Analog Audio
Inputs
OPTICAL
OUTPUT
OPTICAL
TRANSMITTER
TDM
MUX TX INTERFACE
A to D
Converter
Buffer
CONTROL/
INDICATION
VistaLINK
TM
Interface
LOCAL
CONTROL LOCAL
INDICATION
A to D
Converter
A to D
Converter
A to D
Converter
A to D
Converter
Analog
Video
Output
Buffer
Figure 1-1: 7707CVTA Block Diagram

7700 MultiFrame Manual
7707CVTA Composite Video and Analog Audio Fiber Transmitter
Revision 1.2 7707CVTA-3
4 Balanced
Analog Audio
Inputs
TDM
MUX
A to D
Converter
Buffer
A to D
Converter
Buffer
CONTROL/
INDICATION
VistaLINK
TM
Interface
LOCAL
CONTROL LOCAL
INDICATION
A to D
Converter
A to D
Converter
A to D
Converter
A to D
Converter
Analog
Video
Inputs
OPTICAL
OUTPUT
OPTICAL
TRANSMITTER
TX
INTERFACE
Figure 1-2: 7707CVTA-2 Block Diagram

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7707CVTA-4 Revision 1.2
2. INSTALLATION
The 7707CVTA comes with a companion rear plate that has two BNC connectors, one twelve pin terminal
header with removable terminal block and one SC/PC, SC/PC with cover flap, ST/PC or FC/PC optical
connector. For information on mounting the rear plate and inserting the module into the frame see section
3 of the 7700FR chapter.
ANALOG AUDIO IN
ANALOG AUDIO IN
7707CVTA 7707CVTA-2
VIDEO OUT VIDEO IN
Figure 2-1: 7707CVTA Rear Panels
VIDEO IN: Input BNC accepts analog NTSC or PAL video signals. On the 7707CVTA-2 there are
separate video inputs for each of the video signals. This input provides equalization
compensation for up to approximately 250m of industry standard Belden 1694 coaxial
cable.
VIDEO OUT: (7707CVTA only) Output BNC connector for additional signal distribution or signal
monitoring.

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7707CVTA Composite Video and Analog Audio Fiber Transmitter
Revision 1.2 7707CVTA-5
OPTICAL OUTPUT: Output SC/PC, ST/PC or FC/PC female connector. This output contains the Time
Domain Multiplex (TDM) of the digitized analog video signal and analog audio signal.
This optical output is available in 1310nm, 1550nm, up to sixteen CWDM wavelengths
(ITU-T G.694.2 compliant) and up to 40 DWDM wavelengths (ITU-T G.694.1 compliant). The
output wavelength is marked on the rear panel of each module. When connected directly to a
companion module, the output is compatible with multi-mode fiber optic cable. If not connected
directly (i.e. connected through CWDM, DWDM, WDM, or splitter/combiner) the output is
compatible only with single-mode fiber optic cable.
"
Do not hook up the 7707CVTA series DWDM cards and any 7707CVRA series cards
directly with a short fiber optic cable. The 7707CVTA series DWDM cards produce
+7dBm of power which will damage the receiver if connected directly.
"
Do not hook up the 7707CVTA series cards that output more than -7dBm of power
(see 7707CVTA series specifications for output power of various laser types) and
7707CVRA series high sensitivity (-H versions) receiver cards directly with a short
fiber optic cable. The 7707CVTA series cards that produce more than -7dBm of
power will damage the receiver if connected directly.
AUDIO IN:Balanced analog audio inputs for 4 channels. Each input (+, -, GND) is on three of twelve pins
on a twelve pin terminal header.
2.1. CARE AND HANDLING OF OPTICAL FIBER
2.1.1. Safety
!
CLASS 1 LASER PRODUCT
Background colour: yellow
Triangular band: black
Symbol: black
2.1.2. Assembly
Assembly or repair of the laser sub-module is done only at Evertz facility and performed only by qualified
Evertz technical personnel.

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7707CVTA-6 Revision 1.2
2.1.3. Labeling
Certification and Identification labels are combined into one label. As there is not enough room on the
product to place the label it is reproduced here in the manuals.
•There is no date of manufacture on this label as it can be traced by bar code label placed on the
Printed circuit board of each Evertz plug-in module
•The Model number is one of: 7707CVTA13, 7707CVTA13-2, 7707CVTA13M, 7707CVTA13M-2,
7707CVTA15, 7707CVTA15-2
7707CVTAxx, 7707CVTAxx-2 (xx = 27, 29, 31, 33, 35, 37, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61)
7707CVTADyyy, 7707CVTADyyy-2 (Dyyy represents ITU Grid Channel: D200, D210, D220, D230,
D240, D250, D260, D270, D280, D290, D300, D310, D320, D330, D340, D350, D360, D370,
D380, D390, D400, D410, D420, D430, D440, D450, D460, D470, D480, D490, D500, D510,
D520, D530, D540, D550, D570, D580, D590, D600)
Figure 2-2: Reproduction of Laser Certification and Identification Label
2.1.4. Handling and Connecting Fibers
"
Never touch the end face of an optical fiber. Always keep dust caps on optical fiber
connectors when not connected and always remember to properly clean the optical end
face of a connector before making a connection.
The transmission characteristics of the fiber are dependent on the shape of the optical core and therefore
care must be taken to prevent fiber damage due to heavy objects or abrupt fiber bending. Evertz
recommends that you maintain a minimum bending radius of 5 cm to avoid fiber-bending loss that will
decrease the maximum attainable distance of the fiber cable. The Evertz fiber optic modules come with
cable lockout devices, to prevent the user from damaging the fiber by installing a module into a slot in the
frame that does not have a suitable I/O module. For further information about care and handling of fiber
optic cable see section 3 of the Fiber Optics System Design section of this manual binder.

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7707CVTA Composite Video and Analog Audio Fiber Transmitter
Revision 1.2 7707CVTA-7
3. SPECIFICATIONS
3.1. ANALOG VIDEO INPUT
Standards: NTSC, SMPTE 170M, PAL, ITU-R 624-4
Number of Inputs: 1 on 7707CVTA, 2 on 7707CVTA-2
Connector: BNC per IEC 61169-8 Annex A.
Signal Quantization: 12 bits on 7707CVTA, 10 bits on 7707CVTA-2
System Bandwidth: 5.5MHz
Input Level: 2 Vp-p (Maximum)
Gain Equalization: up to 250m of Belden 1694 or equivalent (adjustable)
Input impedance: 75 Ohms
Return Loss: > 30 dB to 5.5 MHz
Signal/Noise Ratio: > 72 dB
Differential Gain: < 1.0 %
Differential Phase: < 0.7 Degree
Passband Ripple:
NTSC: < +/- 0.1dB to 4.1 MHz
< +/- 0.2dB to 5.5 MHz
PAL: < +/- 0.1dB to 4.8 MHz
< +/- 0.2dB to 5.8 MHz
Chroma/Luma Gain: 98% to 103%
Chroma/Luma Delay:
NTSC: < 5 ns
PAL: < 12 ns
Line Time Distortion: 1.2%
3.2. ANALOG VIDEO OUTPUT (7707CVTA ONLY)
Standard: NTSC, SMPTE 170M, PAL, ITU-R 624-4
Number of Outputs: 1 buffered version of input
Connector: BNC per IEC 61169-8 Annex A.
Output Level: 1V p-p
Output Impedance: 75 Ohms
Return Loss: > 30 dB to 5.5 MHz
3.3. ANALOG AUDIO INPUTS
Number of Inputs: 4
Type: Balanced analog audio
Connector: 12 pin removal terminal block
Input impedance: High Impedance (>20 KOhm)
Freq. Response: +/-0.1 dB, 20Hz to 20 kHz
THD 20Hz–20Khz: < 0.005%
Channel Phase Diff.: +/- 1 deg
SNR (weighted): > 85 dB
Max. Audio Input Level: +24 dBu
Signal Quantization: 24 Bits

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7707CVTA-8 Revision 1.2
3.4. OPTICAL OUTPUT
Number of Outputs: 1
Connector: Female SC/PC, SC/PC with cover flap, ST/PC or FC/PC
Return Loss: > 14 dB
Rise and Fall Time: 200ps nominal
Fiber Size: 9 µm core / 125 µm overall
Wavelengths:
Standard: 1310nm, 1550nm (nominal)
CWDM: 1270nm to 1610nm (ITU-T G.694.2 compliant)
DWDM: ITU channel 20 to 60, 100GHz spacing, (ITU-T G.694.1 compliant)
Output Power:
1310nm FP (Standard) -7dBm ± 1dBm
1310nm FP (M Version) 0dBm ± 1dBm
1550nm & CWDM DFB 0dBm ± 1dBm
DWDM DFB +7dBm ± 1dB
3.5. SYSTEM PERFORMANCE
Video Input to Video Output Delay: < 10µs
Audio Input to Audio Output Delay: < 1.9ms
3.6. ELECTRICAL
Voltage: +12VDC
Power: 12Watts.
3.7. COMPLIANCE
Electrical Safety: CSA Listed to CSA C22.2 No. 60065-03, UL 60065-03
IEC 60065-(2001-12) 7th Edition
Complies with CE Low voltage directive 93/68/EEC
Laser Safety: Complies with 24 CFR 1040.10 and 1040.11 except for deviations
pursuant to LN No. 50, dated July 26, 2001
Complies with IEC 60825-1, Am. 2
EMI/RFI: Complies with FCC regulations for class A devices.
Complies with EU EMC directive 89/336/EEC.
3.8. PHYSICAL
7700 or 7701 frame mounting:
Number of slots: 1

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7707CVTA Composite Video and Analog Audio Fiber Transmitter
Revision 1.2 7707CVTA-9
4. STATUS INDICATORS AND DISPLAYS
The 7707CVTA has 6 LED Status indicators and a 4 digit alphanumeric display on the front card edge to
show operational status of the card at a glance. The card edge pushbutton and toggle switch are used to
select various displays on the alphanumeric display. Figure 7-1 shows the location of the LEDs and card
edge controls.
4.1. STATUS INDICATOR LEDS
Two large LEDs on the front of the board indicate the general health of the module
LOCAL FAULT: This Red LED indicates poor module health and will be On during the absence of a
valid video and audio input signal, if a laser fault exists, or if a local input power fault
exists (i.e.: a blown fuse). The LOCAL FAULT indication can also be reported to the
frame through the FRAME STATUS jumper.
MODULE OK: This Green LED indicates good module health. It will be On when a valid video or
audio input signal is present, and the laser and board power are good.
There are four small LEDs on the back side of the board that indicate the presence of audio signals above
the detection level (see section 5.4.1 for information about configuring the audio detection).
AUDIO 1 PRESENT: This Green LED indicates the presence of a valid signal on the Audio 1 input.
AUDIO 2 PRESENT: This Green LED indicates the presence of a valid signal on the Audio 2 input.
AUDIO 3 PRESENT: This Green LED indicates the presence of a valid signal on the Audio 3 input.
AUDIO 4 PRESENT: This Green LED indicates the presence of a valid signal on the Audio 4 input.
4.2. DOT-MATRIX DISPLAY
Additional signal and status monitoring and control over the card’s parameters is provided via the 4-digit
alphanumeric display located on the card edge. The card edge toggle switch is used to select whether
you are displaying status from the card (monitoring mode) or setting control parameters for the card
(control mode). To select one of the display modes, press the pushbutton one or more times to exit the
current display mode and return to the mode select menu item (the display will show MON or SET). Press
the toggle switch to select the monitor mode (MON) or control mode (SET). Once you have selected the
desired mode press the pushbutton to enter that mode. For information about setting up the module in
control mode see section 5.
When you are in monitor mode, the toggle switch determines what data is being displayed on the
alphanumeric display. Each time the toggle switch is pressed up/down, the display advances to the
next/previous display. A message indicating what display mode is active is shown for one second. After
one second without the toggle switch being pressed, the selected display data is shown. The card edge
pushbutton is used to select sub-items where applicable.
The following display messages indicate what is being displayed.

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7707CVTA-10 Revision 1.2
AJCK Set Headphone Jack Audio Channel
VSTD Video Standard in Use
The details of the each of the displays are described in the section 4.2.1 and 4.2.2.
4.2.1. Setting the Headphone Jack Channel
The AJCK display allows the user to set whether audio channels 1/2 or 3/4 will be monitored on the card
edge headphone jack. After one second the display will show a message indicating the current audio
channel being monitored at the headphone jack. When this message is showing, press the pushbutton to
change the audio channel being monitored.
A1/2 Audio channels 1 and 2 will be monitored at the headphone jack.
A3/4 Audio channels 3 and 4 will be monitored at the headphone jack.
4.2.2. Displaying the Video Standard
The 7707CVTA detects the Video standard of the input signal and displays this on the four-digit card edge
display. The following list describes possible displays and their function.
NTSC SMPTE 170M
PAL ITU-R624-4
LSV Indicates that no valid video signal is present on the input. This message overrides the
normal video standard message.

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Revision 1.2 7707CVTA-11
5. CARD EDGE MENU SYSTEM
5.1. NAVIGATING THE MENU SYSTEM
When you are in control mode, the toggle switch and pushbutton are used to navigate through a menu
system to set various parameters for the module. To enter the menu system, press the pushbutton one or
more times to exit the current display mode and return to the mode select menu item. The display will
show MON or SET. Press the toggle switch to select control mode (SET) and then press the pushbutton to
enter the control mode main setup menu. You can use the toggle switch to move up and down the list of
available submenus. Once the desired submenu name is displayed, press the pushbutton to select the
next menu level.
Once you are in the submenu, there will be a list of parameters to adjust. To adjust any parameter, use
the toggle switch to move up or down to the desired parameter and press the pushbutton. Using the
toggle switch, adjust the parameter to its desired value. If the parameter is a numerical value, the number
will increase if you lift the toggle switch and decrease if you push down on the toggle switch. If the
parameter contains a list of choices, you can cycle through the list by pressing the toggle switch in either
direction.
When you have stopped at the desired value, depress the pushbutton. This will update the parameter to
the selected value and return to the mode select menu item (the display shows SET). To change another
parameter, press the pushbutton to enter the main menu system again and continue selecting and
adjusting other parameters.
Throughout the descriptions of the Menu items, default values are shown in underlined text.
Each time the toggle switch is pressed up/down, the display advances to the next/previous display. A
message indicating what display mode is active is shown for one second. After one second without the
toggle switch being pressed, the selected display data is shown. The card edge pushbutton is used to
select sub-items where applicable.
5.2. TOP LEVEL MENU STRUCTURE
The following is a brief description of the top level of the menu tree that appears when you enter the
Control menu. Selecting one of these items will take you down into the next menu level. The details of the
each of the displays are described in the sections 5.3 to 5.5.
EQ1 Configures the input cable equalization on Video input 1.
EQ2 Configures the input cable equalization on Video input 2 (CVTA-2 only).
ADET This submenu allows you to set parameters related to the Audio detection.
DISP Allows you to set the orientation of the front panel display.
FRST Resets the module to its factory reset values.

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5.3. SETTING THE VIDEO CONTROLS
The first group of menu items are used to configure the control items related to the Video. The 7707CVTA
has only 1 video channel while the 7707CVTA-2 has 2 video channels, therefore some of the menu items
related to video channel 2 will not be described in the following. For the sake of simplicity, only the menu
items for video channel 1 are shown.
5.3.1. Setting the Cable Equalization
EQ1
0
0 to 300
The EQ controls are used to set the amount of cable equalization being
applied at the video input(s). It can be adjusted to compensate for various
input cable lengths to achieve a flat frequency curve. The display shows a
range of approximate cable length values expressed in meters for Belden
1694 cable or equivalent. When set to 0 the cable equalization is turned off.
5.4. SETTING THE AUDIO CONTROLS
The first group of menu items are used to configure the control items related to the Audio. The menu
items for each channel are identical therefore for the sake of simplicity, only the menu items for A1
channel are shown.
5.4.1. Configuring Audio Presence Detection
The ADET submenu contains 3 menu items (for each audio channel) related to the Audio detection. The
menu items for each channel are identical, therefore for the sake of simplicity, only the menu items for A1
channel are shown.
DET1
OFF
ON The DET controls enable audio presence detection on each of the channels.
The LVL and DUR controls are used to detect when the audio is considered missing. The LVL control
sets the audio level under which the audio is considered missing. The audio must be under the LVL level
for the duration set by the DUR control before the audio is considered missing. When audio is missing,
the audio must be over the LVL level for 1 sec. before the audio will be considered present.
LVL1
–67 to 0
-40 The LVL control sets the audio level under which audio is considered to be
missing. This value is expressed in dBu
DUR1
1 to 20
10 The DUR control sets the amount of time (in seconds) the audio is below the
level set by the LVL control before the audio is considered missing.

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Revision 1.2 7707CVTA-13
5.4.1.1. Procedure to Calibrate Audio Presence Detection
1. Supply the 7707CVTA module that is being calibrated with your plant's noisiest audio feed without any
audio program material present. This will be a baseline noise level to calibrate the audio-missing
detector.
2. Set the DUR control to 0.5 sec so that you can see the results of adjusting the LVL parameter without
getting confused with the detection time.
3. Adjust the audio LVL control upward from its minimum value until the corresponding AUDIO PRESENT
LED on the card edge goes Off. This will be the noise floor level. Raise the LVL a few dB to make the
detector insensitive to this noise level.
4. Set the DUR control to a time appropriate to your application. This should be set to a value longer than
your worst case acceptable quiet period.
5.5. CHANGING THE ORIENTATION OF THE TEXT ON THE DISPLAY
DISP
VERT
HOR The DISP control allows the user to select a horizontal or vertical orientation
for the displays to accommodate mounting the module in the 3RU or 1RU
frames.
5.6. RESTORING THE FACTORY SETTINGS
FRST
NO
YES The FRST control allows the user to restore the factory values (those
underlined) for the module’s parameters described in sections 5.3 and 5.5.

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6. CARD EDGE CONTROLS
The 7707CVTA is equipped with a three position, return to center toggle switch which is used to select the
various card-edge displays and menu items. It is also used in conjunction with a momentary pushbutton to
select some sub-items of the menu system. See sections 4.2 and 5 for information about the card edge
displays and menu system.
6.1. MONITORING THE AUDIO
A stereo headphone jack located at the front of the module is used to monitor the individual audio channel
pairs. The AJCK menu item is used to select the audio channels currently being monitored. (See section
4.2.1) The monitoring volume level can be adjusted by turning the level potentiometer located beside the
headphone jack.

7700 MultiFrame Manual
7707CVTA Composite Video and Analog Audio Fiber Transmitter
Revision 1.2 7707CVTA-15
7. JUMPERS
Several jumpers, located at the front of the module are used to preset various operating modes. Figure
7-1 shows the location of the card edge controls, status indicators and jumpers.
FRAME STATUS ON/OFF
SERIAL
LOCAL FAULT
DISPLAY
SELECT
PUSH BUTTON
TOGGLE SWITCH
UPGRADE RUN/UPGD MASTER LOCAL/REMOTE
CONTROL1 A / B CONTROL 2 A / B
J4 J5 J6 J7 J8 J9
MODULE OK
HEAD PHONE JACK
AUDIO 2 PRESENT
AUDIO 3 PRESENT
AUDIO 1 PRESENT
AUDIO 4 PRESENT
HEAD PHONE VOLUME
Figure 7-1: Location of Jumpers and Card Edge Controls
7.1. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED
BY THE GLOBAL FRAME STATUS
The FRAME STATUS jumper J4 determines whether local faults (as shown by the Local Fault indicator)
will be connected to the 7700FR frame's global status bus.
FRAME STATUS: To monitor faults on this module with the frame status indicators (on the Power
Supply FRAME STATUS LED's and on the Frame's Fault Tally output) install this jumper in the
On position. (Default)
When this jumper is installed in the Off position local faults on this module will not be
monitored.

7700 MultiFrame Manual
7707CVTA Composite Video and Analog Audio Fiber Transmitter
7707CVTA-16 Revision 1.2
7.2. SELECTING WHETHER MODULE WILL BE CONTROLLED FROM THE
LOCAL CONTROLS OR THROUGH THE VISTALINK®INTERFACE
The MASTER jumper J6 selects whether the module will be controlled from the local user controls or
through the VistaLINK®interface.
MASTER: When this jumper is installed in the LOCAL position, the card functions are controlled through
the local jumpers.
When this jumper is installed in the REMOTE position, the card functions are controlled through
the VistaLINK®interface.
7.3. CONFIGURING THE MODULE FOR FIRMWARE UPGRADES
UPGRADE: The UPGRADE jumper J5 is used when firmware upgrades are being done to the module.
For normal operation it should be installed in the RUN position. See the Upgrading Firmware
chapter of this manual for more information.
To upgrade the firmware in the module unit pull it out of the frame. Move the UPGRADE
jumper into the UPGD position. Install the Upgrade cable provided (located in the vinyl pouch
in the front of this manual) onto the SERIAL header at the card edge. Re-install the module
into the frame. Run the upgrade as described in the Upgrading Firmware section of this
manual. Once the upgrade is complete, remove the module from the frame, move the
UPGRADE jumper into the RUN position, remove the upgrade cable and re-install the module.
The module is now ready for normal operation.