7720AD-A4-2, 7720AD4, 7720AD4-B

The 7720AD4 series Audio De-Embedders extract embedded audio as specified by SMPTE ST 272 from a 270Mb/s serial digital video signal. The companion 7720AE4 Audio Embedder facilitates audio multiplexing at the source. The 7720AD4 is available in 4 different versions.

SMPTE ST 272 allows for up to four groups (4 channels/group) to be embedded within a serial digital signal. The 7720AD4 can de-embed two audio groups onto four unbalanced AES outputs. The 7720AD4-B can de-embed two audio groups onto four balanced AES outputs. The 7720AD-A4-2 can de-embed one audio group onto two unbalanced AES outputs and 4 balanced analog audio outputs.

Features

• Card edge LEDs indicating module status, video presence, selected audio group data is present
• LED indication for the presence of each of the 4 audio groups within the input video
• Audio group selection via card edge DIP switches
• Audio channel swapping selection via card edge DIP switches (not on 7720AD-A4-2)
• Analog audio output models have independent volume controls for each of the audio channel outputs
• VistaLINK® capable for remote monitoring, control and configuration capabilities via SNMP; using VistaLINK® PRO, CP-2116E or CP-2232E Control Panels. VistaLINK® is available when modules are used with the 3RU 7800FR frame and a 7800FC VistaLINK® Frame Controller module in slot 1 of the frame

Output Organization

Specifications

Serial Video Input

Standard	SMPTE ST 259-C -525 & 625 component
Connector	1 BNC per IEC 61169-8 Annex A
Equalization	Automatic 300m @ 270MB/s with Belden 8281 or equivalent cable
Return Loss	> 13dB up to 270MB/s

Reclocked Serial Video Outputs

Standard	Same as input
Number of Outputs	1 on 7720AD4-B, 2 on 7720AD4 and 7720AD-A4-2
Connectors	BNC per IEC 61169-8 Annex A
Signal Level	800mV nominal
DC Offset	0V ±0.5V
Rise And Fall Time	700ps nominal
Overshoot	< 10% of amplitude
Wide Band Jitter	< 0.2UI

Unbalanced AES Audio Outputs

Not on -B versions

Standard	SMPTE 276M, single ended synchronous AES
Number of Outputs	4 on 7720AD4
Connectors	BNC per IEC 61169-8 Annex A
Sampling Rate	48kHz
Impedance	75Ω unbalanced
Dynamic Range	20-bit

Balanced AES Audio Outputs

-B versions only

Standard	AES3-1992
Number of Outputs	4 on 7720AD4-B
Connector	Terminal strip
Sampling Rate	48kHz
Impedance	110Ω balanced
Dynamic Range	20-bit

Analog Audio Outputs

A4 Versions Only

Number of Outputs	4
Type	Balanced analog audio
Connector	Terminal strip
Output Impedance	66Ω balanced
Sampling Frequency	48kHz
Signal Level	0dB FS => 8 to 24dBu into 10kΩ loads (user settable) 0dB FS => 8 to 22dBu into 600Ω loads (user settable)
Frequency Response	< ±0.1dB (20Hz to 20kHz)
THD+N	> 90dB RMS @ 1kHz, with 24dBu output > 100dB RMS @ 20Hz to 20kHz, with 24dBu output
Crosstalk Isolation	> 100dB RMS (20Hz to 20kHz)

Electrical

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

Physical

Number of Slots	1

Ordering Information

7720AD-A4-2	SD-SDI AES Audio De-embedder with 4 balanced analog audio outputs
7720AD4	SD-SDI AES Audio De-embedder with 4 unbalanced AES outputs (2 audio groups)
7720AD4-B	SD-SDI AES Audio De-embedder with 4 balanced AES outputs (2 audio groups)

Ordering Options

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

Rear Plate Suffix
+1RU	1RU rear plate for use with 7701FR Multiframe
+SA	Standalone Enclosure Rear Plate
+3RU	3RU rear plate for use with 350FR, 7700FR-C or 7800FR Multiframes

Enclosures

350FR	Portable Multiframe which holds 7 single slot modules
7700FR-C	3RU Multiframe which holds 15 single slot modules
7800FR	3RU Multiframe which holds 15 single slot modules
7701FR	1RU Multiframe which holds 3 single slot modules
S7701FR	7700 Series Standalone Enclosure

Accessories

7800FC	VistaLINK® Frame Controller
CP-2116E-H	Remote Control Panel
CP-2232E	Remote Control Panel