Evertz Microsystems Ltd.

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7720AM-AES4 & 7720AM-AES4-B

Quad Unbalanced/Balanced AES Audio Mixer, Delay, Audio Swapper

VistaLINK® enabled Dolby Partner

The 7720AM-AES4 Audio Mixer accepts 4 AES/EBU digital audio inputs (eight channels) and synchronously mixes all channels and routes them to any of the four AES outputs. The 7720AM-AES4 performs channel swapping, over mixes, mix downs and on-air breakaways. All processing is at 24-bit resolution. The 7720AM-AES4 provides eight channels of independent audio delay control making it ideal for retiming AES audio.

A non-PCM data mode is provided in order to pass Dolby-E or AC3 data. In this mode, channel swapping and delay is supported (mixing is not) with the requirement that the inputs are 48kHz synchronous and locked (a reference is required to be used in this mode)

Features

  • 24-bit audio processing for high fidelity
  • Flexible sample rate of 28kHz to 108kHz (will be resampled to 48kHz locked to reference on output)
  • Audio Sample Rate Converters can be disabled
  • GPI control
  • Dolby-E/AC3 pass through mode
  • Front panel LEDs indicate: module fault, audio, genlock and DARS present
  • 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 7700FC VistaLINK® Frame Controller module in slot 1 of the frame
    • Maximum delay of 2.54 seconds with sample accuracy
    • Bypass relay outputs at the loss of power
    • Additional Features when controlled through VistaLINK®
    • Provides 2:1 audio mixing capability, ideal for "ducking" audio or voiceovers
    • Can be used at the inputs of an audio console to expand inputs and add mixing capacity
    • Performs voice overs, mix downs and on-air breakaways
    • Reassignment of audio channels
    • +12 to -12dB gain control on each mixer input in 0.25dB steps
    • Continuous and independent channel delay adjustment up to 2.54 seconds
Block Diagram Block Diagram

Specifications

AES Audio Input/Output
StandardSMPTE ST 276, synchronous or asynchronous AES
Number of Inputs4
Number of Outputs4
ConnectorBNC loop per IEC 61169-8 Annex A or terminal block
Resolution24 bits
Sampling Rate48kHz
Impedance75Ω unbalanced, 110Ω balanced
Level1V p-p nominal
Genlock Input
TypeHD Tri-level syncs, NTSC or PAL Colour Black 1V p-p, or Composite bi-level sync (525i/59.94 or 625i/50) 300 mV
ConnectorBNC loop per IEC 61169-8 Annex A
Termination75Ω (jumper selectable)
DARS Reference
TypeDigital Audio Signal with 48kHz sample rate
StandardSMPTE ST 276-1995 single ended AES, AES-11
ConnectorBNC loop per IEC 61169-8 Annex A
Termination75Ω (jumper selectable)
Input to Output Processing
Gain±12dB in 0.25dB steps
DelayMin 7 samples with sample rate converters disabled
Min 92 samples with sample rate converters enabled
Adjustable to approximately 2.54 seconds
General Purpose In/Out
GP InputsLoad user preset configurations
TypeOpto-isolated, active low with internal pull-ups to +5V
ConnectorRemovable terminal block
Signal Level+5V nominal
Data Logging Serial Port
StandardRS-422
Connector5 pins of 12 pin removable terminal block
FunctionNot used at this time
Electrical
Voltage+12V DC
Power8 Watts
EMI/RFIComplies with FCC Part 15 Class A, EU EMC Directive
Physical
Number of Slots
7700 Frame Mounting2
7701 Frame Mounting1

Ordering Information

Notes• Requires 7700FC for full module control
7720AM-AES4Quad AES Audio Mixer, Delay, Audio Swapper
Ordering Options
Notes• This module not available in a standalone enclosure
• Rear plate must be specified at time of order - eg: [model]+3RU
Rear Plate Suffix
+3RU3RU rear plate for use with 7800FR, 7801FR, 7700FR-C or 350FR Multiframes
Enclosures
350FRPortable Multiframe which holds 7 modules
7700FR-C3RU Multiframe which holds 15 modules
7800FR3RU Multiframe which holds 15 modules
Accessories
7700FCVistaLINK® Frame Controller
CP-2116ESystem Control Panel, One Touchscreen LCD and 16 LCD Buttons
CP-2232ESystem Control Panel, 2RU, Two Touchscreen LCDs and 32 LCD Buttons