evertz 7720AE Series User manual

7700 MultiFrame Manual
7720AE Series Serial Digital AES Audio Embedder
1. OVERVIEW......................................................................................................................................... 1
2. INSTALLATION.................................................................................................................................. 3
2.1. CARE AND HANDLING OF OPTICAL FIBER (7720AE-EO ONLY) ......................................... 4
2.1.1. Safety ................................................................................................................................... 4
2.1.2. Handling And Connecting Fibers .........................................................................................4
3. SPECIFICATIONS.............................................................................................................................. 4
3.1. SERIAL VIDEO INPUT .............................................................................................................. 4
3.2. SERIAL VIDEO OUTPUTS WITH EMBEDDED AUDIO (SMPTE 272M).................................. 5
3.3. OPTICAL OUTPUT (7720AE-EO ONLY) ................................................................................... 5
3.4. AES AUDIO INPUTS ................................................................................................................. 5
3.5. SYSTEM PERFORMANCE ....................................................................................................... 5
3.6. ELECTRICAL ............................................................................................................................ 5
3.7. PHYSICAL................................................................................................................................. 6
4. STATUS LEDS ................................................................................................................................... 6
4.1. MODULE STATUS LEDS.......................................................................................................... 6
4.2. AUDIO GROUP STATUS LEDS ............................................................................................... 7
5. CARD EDGE CONTROLS ................................................................................................................. 7
5.1. SELECTING THE AUDIO GROUP THAT WILL BE EMBEDDED ............................................ 7
5.2. SELECTING THE AUDIO DELAY (FEATURE NOT IMPLEMENTED AT THIS TIME) .......................... 8
5.3. SELECTING SAMPLE RATE CONVERSION FOR AES INPUTS............................................ 8
5.4. SELECTING WHERE THE EMBEDDED AUDIO WILL BE PLACED ...................................... 9
5.5. SELECTING WHETHER EXISTING AUDIO WILL BE REMOVED .......................................... 9
6. JUMPERS........................................................................................................................................... 9
6.1. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED
BY THE GLOBAL FRAME STATUS ...................................................................................... 10
6.2. CONFIGURING THE MODULE FOR FIRMWARE UPGRADES ............................................10
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Figures
Figure 1: 7720AE Block Diagram........................................................................................................................ 2
Figure 2: 7720AE-EO Block Diagram ................................................................................................................. 2
Figure 3: 7720AE Rear Panels ........................................................................................................................... 3
Figure 4: Location of Jumpers on 7720AE.......................................................................................................... 9
Tables
Table 1: Audio Group Status LEDs ..................................................................................................................... 7
Table 2: DIP Switch Functions ............................................................................................................................ 7
Table 2: Audio Group Assignment Switch Settings ............................................................................................ 8
Table 3: Audio Delay Switch Settings ................................................................................................................. 8
Table 4: Sample Rate Conversion Switch Settings ............................................................................................ 8
Table 5: Embedded Audio Justification Switch Settings ..................................................................................... 9
Table 6: Embedded Audio Cleaning Switch Settings.......................................................................................... 9
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REVISION HISTORY
REVISION DESCRIPTION DATE
1.0 Preliminary Version Jun 99
1.1 First Release Version Mar 00
1.2 Block diagrams and rear panel drawing changed to add Bypass relay support May 00
1.2.1 Audio Resolution corrected to 20 bits Aug 00
1.2.2 Toggle switch and Pushbutton references removed Feb 01
Specifications updated
1.2.3 Embedding latency specification added Mar 01
1.3 Added info for 7720AE-EO Apr 01
1.3.1 Minor typographical corrections Aug 03
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.
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1. OVERVIEW
The 7720AE series Audio Embedders insert AES audio signals into a 270 Mb/s SDI video signal as
specified in SMPTE 272M. The companion 7720AD Audio Deembedder facilitates audio demultiplexing at
the destination. The 7720AE embedder features one auto-equalized coaxial input and embeds AES audio
into two serial outputs.
The 7720AE-EO version has an Electrical to Fiber converter and provides an economical method of
embedding audio for in-plant coaxial distribution and longer distance optical distribution for SMPTE 259M
(143 - 540 Mb/s). The companion 7720AD-OE Audio Deembedder and Fiber to Electrical converter
facilitates audio demultiplexing and conversion back to coaxial distribution at the destination. The
7720AE-EO embedder features one auto-equalized coaxial input and embeds AES audio into with one
serial outputs and one optical output.
SMPTE 272M allocates four groups of four audio channels that can be embedded into the SMPTE 259M
bitstream. The 7720AE embeds one audio channel group and has the ability to select the group where
the audio will be inserted.
Features:
• automatic detection of 525 line and 625 line input
• 7720AE version hase bypass relay protection on one SDI output for power failures
• 7720AE-EO version has optical output wavelengths of 1310nm, 1550nm, and up to eight CWDM
wavelengths from 1270nm to 1610nm.
• 7720AE-EO version supports multi-mode and single-mode fiber.
• 20-bit AES input and audio embedding
• audio group assignment
• Sample rate conversion disable on AES inputs to permit Dolby E embedding
• audio delays (¼ video field time resolution) can be programmed. (feature not implemented at this
time)
• embedded packets can be justified or follow existing packets
• existing embedded audio may be passed or removed
• front panel LEDs indicate video and audio signal presence, and module fault.
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Sample Rate
Converter
Sample Rate
Converter
Equalizer S / P
Audio
Present
Audio Group
Embedder
Module
Status
Video
Present
Serial Input
270 Mb/s
(SMPTE 259M)
AES Inputs
(SMPTE 276M)
1
2
Serial Output
270 Mb/s
with
embedded Audio
Audio Delay
Buffer
Cable
Driver
P / S
Bypass
Relay
Figure 1: 7720AE Block Diagram
Sample Rate
Converter
Sample Rate
Converter
Equalizer S / P
Audio
Present
Audio Group
Embedder
Module
Status
Video
Present
Serial Input
270 Mb/s
(SMPTE 259M)
AES Inputs
(SMPTE 276M)
1
2
Serial Output
270 Mb/s
with
embedded Audio
Audio Delay
Buffer
Cable
Driver
P / S
Optical
Driver
Optical Output
270 Mb/s
with
embedded Audio
Figure 2: 7720AE-EO Block Diagram
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2. INSTALLATION
The 7720AE modules each come with a companion rear plate that has 5 BNC connectors. The
7720AE-EO modules each come with a companion rear plate that has 4 BNC connectors and one SC/PC
(shown), 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.
Figure 3: 7720AE Rear Panels
SDI INPUT Input BNC connector for 10-bit serial digital video signals compatible with the SMPTE 259M
standard.
SDI OUTPUT There are two BNC (one on 7720AE-EO) connectors with reclocked serial component video
outputs, compatible with the SMPTE 259M standard. These outputs contain the input video
with the audio present at AES inputs 1 and 2 embedded in accordance with the SMPTE 272M
standard. On the 7720AE the top output is protected by a bypass relay, which will activate in
the event of power loss to the module. The remaining output is not bypass protected.
On the 7720AE-EO there is one SC/PC (shown), ST/PC or FC/PC female connector with
reclocked serial component video outputs, compatible with the SMPTE 259M standard. This
connector is the optical output with embedded audio as shown in section 3.3.
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AES INPUT 1 AES audio input for channel 1 and 2 of the audio group selected for embedding.
AES INPUT 2 AES audio input for channel 3 and 4 of the audio group selected for embedding.
2.1. CARE AND HANDLING OF OPTICAL FIBER (7720AE-EO Only)
2.1.1. Safety
!
Never look directly into an optical fiber. Non-reversible damage to the eye can
occur in a matter of milliseconds.
The laser modules used in the Evertz fiber optic modules are Class I, with a maximum output power of
2mW, and wavelengths of either 1310 nm or 1470 to 1610 nm.
2.1.2. Handling And Connecting Fibers
"Never touch the end face of an optical fiber.
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 3 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 chapter of this manual.
3. SPECIFICATIONS
3.1. SERIAL VIDEO INPUT
Standard: SMPTE 259M C – 525 or 625 line component.
Connector: 1 BNC per IEC 169-8
Equalization: Automatic 175m @ 270 Mb/s with Belden 8281 or equivalent cable
Return Loss: > 15 dB up to 270 Mb/s
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3.2. SERIAL VIDEO OUTPUTS WITH EMBEDDED AUDIO (SMPTE 272M)
Number of Outputs: (1 output bypass relay protected)on 7720AE
1 on 7720AE-EO
Standard: same as input
Connectors: BNC per IEC 169-8
Signal Level: 800mV nominal
DC Offset: 0V ±0.5V
Rise and Fall Time: 900ps nominal
Overshoot: <10% of amplitude
Return Loss: > 15 dB up to 540 Mb/s
Wide Band Jitter: < 0.2 UI
3.3. OPTICAL OUTPUT (7720AE-EO Only)
Number of Outputs: 1
Connector: Female SC/PC, ST/PC or FC/PC
Return Loss: > 14 dB
Rise and Fall Time: 400-700 ps nominal
Jitter: < 0.2UI
Fiber Size: 9 µm core / 125 µm overall
Wavelengths:
Standard: 1310nm, 1550nm (nominal)
CWDM: 1270nm to 1610nm (See ordering information).
Output Power:
1310nm: -7.5dBm ± 1dB
1550nm/CWDM: 0dBm ± 1dB
3.4. AES AUDIO INPUTS
Number of Inputs: 2
Standard: SMPTE 276M, single ended synchronous or asynchronous AES
(synchronous AES required when sample rate converter is disabled.)
Signal Level: 1V p-p ±0.1V
Connectors: BNC per IEC 169-8
Resolution: 24 bits
Sampling Rate: 48 KHz
Impedance: 75 Ohms unbalanced
3.5. SYSTEM PERFORMANCE
Embedding Latency: 1.3 to 3mSec
3.6. ELECTRICAL
Voltage: + 12VDC
Power: 7 Watts.
EMI/RFI: Complies with FCC Part 15, class A and EU EMC directive.
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3.7. PHYSICAL
7700 or 7701 frame mounting:
Number of slots: 1
Stand Alone Enclosure:
Dimensions: 14 “ L x 4.5 “ W x 1.9 “ H
(355 mm L x 114 mm W x 48 mm H)
Weight: approx. 1.5 lbs. (0.7 Kg)
4. STATUS LEDS
The location of the status LEDs is shown in Figure 4.
4.1. MODULE STATUS LEDS
MODULE OK 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 solid when input video is missing, or audio is missing from both
AES inputs or there is a fault in the module power supply.
VIDEO PRESENT This Green LED will be On when there is a valid video signal present at the module
input.
AUDIO PRESENT This Green LED will be On solid when there is a valid AES audio signal present at
both of the AES inputs, or flashing when there is a valid AES audio signal at one of
the AES inputs. This indicator is only valid when input video is present.
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4.2. AUDIO GROUP STATUS LEDS
Four LEDs located on the lower end of the module (opposite the DIP switch) indicate the status of the
audio groups. Audio group LED 1 is located closest to the center of the module.
Audio
Group
LED
Color Audio Group Status
1 Off There is no group 1 audio on the video output.
On Group 1 audio on the video output is being passed through from the input video.
Flashing Group 1 audio on the video output is being embedded from AES inputs 1 and 2.
2 Off There is no group 2 audio on the video output.
On Group 2 audio on the video output is being passed through from the input video.
Flashing Group 2 audio on the video output is being embedded from AES inputs 1 and 2.
3 Off There is no group 3 audio on the video output.
On Group 3 audio on the video output is being passed through from the input video.
Flashing Group 3 audio on the video output is being embedded from AES inputs 1 and 2.
4 Off There is no group 4 audio on the video output.
On Group 4 audio on the video output is being passed through from the input video.
Flashing Group 4 audio on the video output is being embedded from AES inputs 1 and 2.
Table 1: Audio Group Status LEDs
5. CARD EDGE CONTROLS
The 7720AE is equipped with an 8 position DIP switch to allow the user to select various functions. All
positions are assigned sequentially such that the first position is located at the top of the DIP switch
(farthest from to the card ejector). Sections 5.1 to 5.5 show the assigned DIP switch functions. The On
position is down, or closest to the printed circuit board.
DIP Switch Function
1
2
Group Selection
3
4
5
Delay Settings (Future)
6 Sampe Rate Converter Disable
7 Follow/Justify
8 Clean/Pass
Table 2: DIP Switch Functions
5.1. SELECTING THE AUDIO GROUP THAT WILL BE EMBEDDED
The SMPTE 272M standard permits up to 4 groups of 4 audio channels to be embedded into the 270 Mb/s
video bitstream. DIP switches 1 and 2 are used to select which group that the incoming audio will be
embedded into.
Model 7720AE will embed up to four audio channels into the audio group selected by the DIP switches.
DIP 1 DIP 2 Audio Group ID
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Off Off 1 (default)
On Off 2
Off On 3
On On 4
Table 3: Audio Group Assignment Switch Settings
Channels 1 and 2 from AES input 1 will be embedded into channels 1 and 2 of the selected group.
Channels 1 and 2 from AES input 2 will be embedded into channels 3 and 4 of the selected group. If
audio is not present on one or both of the AES inputs, the respective channels of the selected audio group
will be mute.
5.2. SELECTING THE AUDIO DELAY (feature not implemented at this time)
DIP switches 3 to 5 are used to select one of sixteen delays which can be added to the audio before it is
embedded. This delay allows the user to resynchronize the audio back to the video to accommodate
video processing delays. DIP switches 3, 4 and 5 are used to select the delay in 1/4 video field resolution.
DIP 3 DIP 4 DIP 5 Audio Delay
Off Off Off
minimum delay mode (less than 1 audio sample time or 20µs)
On Off Off 1/4 video field
Off On Off 1/2 video field
On On Off 3/4 video field
Off Off On 1 video field
On Off On 1 and 1/4 video field
Off On On 1 and 1/2 video field
On On On 1 and 3/4 video field
Table 4: Audio Delay Switch Settings
5.3. SELECTING SAMPLE RATE CONVERSION FOR AES INPUTS
DIP switch 6 selects whether the sample rate conversion for AES inputs is enabled or not.
DIP 6 FUNCTION DESCRIPTION
Off SRC Enabled
(default)
AES inputs are sample rate converted at 48 kHz that is
synchronous to the input video. AES inputs can be either
synchronous or asynchronous to the video source.
On SRC Disabled The content of AES inputs is preserved without any loss, and
directly embedded into the input video. AES inputs must be
synchronous to the video source. This setting is required when
embedding Dolby E.
Table 5: Sample Rate Conversion Switch Settings
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5.4. SELECTING WHERE THE EMBEDDED AUDIO WILL BE PLACED
DIP switch 7 controls how the pre-existing audio contents are re-embedded back to the video source.
DIP 7 FUNCTION DESCRIPTION
Off Follow The position of all pre-existing embedded audio contents will not
be moved with reference to the EAV. For incoming audio packets
with the same selected audio group DID, the associated DID is
replaced with "Marked Packets for Deletion" as defined in SMPTE
291M
On Justify
(default)
Pre-existing embedded audio contents will be extracted. All
packets with "Marked Packet for Deletion" or containing the same
selected audio group DID will be removed, and remaining packets
will be re-embedded right after each EAV.
Table 6: Embedded Audio Justification Switch Settings
5.5. SELECTING WHETHER EXISTING AUDIO WILL BE REMOVED
DIP switch 8 controls whether existing audio packets will be passed or removed from the video stream.
DIP 8 FUNCTION DESCRIPTION
Off Clean All incoming embedded audio data will be removed; new audio
data will be embedded after EAV. The remaining H blanking
period is filled with default blanking value.
On Pass
(default)
New audio data will be embedded after the last of the existing
audio group packets.
Table 7: Embedded Audio Cleaning Switch Settings
6. JUMPERS
MODULE STATUS
SIGNAL PRESENT
EVERTZ (A) 7700PB
SFF POWER +12V
AUDIO Run
Upgrade
J16
J24
J22
FRAME
STATUS
ON
OFF
J8
GND
Figure 4: Location of Jumpers on 7720AE
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6.1. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED
BY THE GLOBAL FRAME STATUS
FRAME STATUS The FRAME STATUS jumper located at the front of the module determines whether
local faults (as shown by the Local Fault indicator) will be connected to the 7700FR
frame's global status bus.
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.
6.2. CONFIGURING THE MODULE FOR FIRMWARE UPGRADES
UPGRADE The UPGRADE jumper J16 located at the front of the module 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 in the front of the binder
for more information.
To upgrade the firmware in the module unit pull it out of the frame. Move Jumper
J16 into the UPGRADE position. Install the Upgrade cable provided (located in the
vinyl pouch in the front of the manual binder) onto header J24 at the card edge. Re-
install the module into the frame. Run the upgrade as described in the Upgrading
Firmware chapter in the front of the binder. Once the upgrade is completed, remove
the module from the frame, move J16 into the RUN position, remove the upgrade
cable and re-install the module. The module is now ready for normal operation.
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