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• 7720AE4

7720AE4

SD-SDI 4 AES Audio Embedder

The 7720AE4 Audio Embedder inserts AES audio signals into a 270Mb/s SDI video signal as specified in SMPTE 272M. The companion 7720AD4 Audio Deembedder facilitates audio demultiplexing at the destination.

SMPTE 272M allocates four groups of four audio channels that can be embedded into the SMPTE 259M bitstream. The 7720AE4 embeds up to 4 AES audio signals into two groups on the SDI outputs for discrete 5.1 audio applications. The 7720AE4 is Dolby E compliant when the sample rate converters are turned off.

VistaLINK® enables control and configuration capabilities via Simple Network Management Protocol (SNMP). This offers the flexibility to manage the module status monitoring and configuration from SNMP enabled control systems such as Evertz VistaLINK® PRO locally or remotely.

Features

Automatic detection of 525 line and 625 line input Bypass relay protection on one SDI output for power failures 20-bit AES input and audio embedding Individual audio group assignment for each group Group lock mode maintains phase relationship between the groups for 5.1 audio applications Sample rate conversion disable on AES inputs to permit Dolby E embedding Programmable audio delays (up to 7 frames in 1/2 video field increments using DIP switches or up to 1.3 sec in 1 sample increments with VistaLNK™ control Ancillary packet cleaning mode removes all audio before embedding Ancillary packet reformatting mode left justifies and removes unused packets before embedding

Embeds audio on internally generated black or blue video when there is no video input Front panel LEDs indicate video and audio signal presence, and module fault VistaLINK® capable for remote monitoring, control and configuration capabilities via SNMP; using VistaLINK® PRO, 9000NCP or 9000NCP2 Network Control Panel. VistaLINK® is available when modules are used with the 3RU 7700FR-C frame and a 7700FC VistaLINK® Frame Controller module in slot 1 of the frame

Specifications

Serial Video Input
Standard	SMPTE 259M-C (270Mb/s) 525 or 625 line component
Number of Inputs	1
Connector	BNC per IEC 61169-8 Annex A
Equalization	Automatic 210m @ 270Mb/s with Belden 8281 or equivalent cable
Return Loss	> 15dB up to 540Mb/s

Serial Video Output
Standard	Same as input
Number of Outputs	2 (1 bypass relay protected)
Connector	BNC per IEC 61169-8 Annex A
Embedded Audio
Standard	SMPTE 272M
Resolution	20 bits
Sampling Rate	48 KHz synchronous
Signal Level	800mV nominal
DC Offset	0V ±0.5V
Rise/Fall Time	900ps nominal
Overshoot	< 10% of amplitude
Return Loss	> 15dB up to 270Mb/s
Wideband Jitter	< 0.2UI

AES Audio Input
Standard	SMPTE 276M, single ended AES
Number of Inputs	4
Connector	BNC per IEC 61169-8 Annex A
Resolution	20 bits
Sampling Rate	32kHz to 96kHz synchronous or asynchronous 48kHz synchronous AES required when sample rate converter is disabled
Impedance	75Ω unbalanced
Level	1V p-p ±0.1V

System Performance
Embedding Latency	1.3ms to 3ms
Audio Delay
DIP Switch Control	Up to 7 frames, 1/2 frame increments (delay applied to all AES channels)
VistaLINK® or Serial Port Control	Up to 1.35s in 1 sample increments (independent control of delay for each channel)

Electrical
Voltage	+12V DC
Power	9 Watts
EMI/RFI	Complies with FCC Part 15 Class A, EU EMC Directive

Physical
Number of Slots	1

Ordering Information

7720AE4	SD-SDI 4 AES Audio Embedder

Ordering Options
Notes	• Rear plate must be specified at time of order - eg: [model]+3RU

Rear Plate Suffix
+3RU	3RU rear plate for use with 7700FR-C or 350FR Multiframe
+1RU	1RU rear plate for use with 7701FR Multiframe
+SA	Standalone Enclosure Rear Plate

Enclosures
350FR	Portable Multiframe which holds 7 modules
7700FR-C	3RU Multiframe which holds 15 modules
7701FR	1RU Multiframe which holds 3 modules
S7701FR	7700 Series Standalone Enclosure

Accessories
7700FC	VistaLINK® Frame Controller
9000NCP	1RU VistaLINK® General Purpose Network Control Panel
9000NCP2	2RU VistaLINK® General Purpose Network Control Panel