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7700DA-AESB

Auto Equalizing Balanced AES/EBU Distribution Amplifier

The 7700DA-AESB is a five output DA with auto equalizing input and reclocking for 110Ω balanced AES signals. The DA will automatically equalize AES signals on Belden 1800B cable when the drive signal is 7V p-p. The DA will reclock data with sampling frequencies of 32kHz, 44.1kHz, 48kHz and 96kHz.

The 7700DA-AESB card edge LED indicators provide quick and accurate assessment of the incoming signal integrity. The 7700DA-AESB also provides a contact closure output that can be configured using on-board jumpers to assert when an input error condition exists.

The 7700DA-AESB occupies one card slot and can be housed in the 1RU 7801FR frame which holds up to four single or two dual slot modules, the 3RU 7800FR frame which has a 15 slot capacity, the portable 3RU 350FR frame which has a 7 slot capacity, or a standalone enclosure which holds a single module.

Features
  • AES3-1992 standard for AES audio on 110Ω twisted pair cable
  • Transformer coupled 110Ω balanced input (selectable Hi-Z)
  • Data reclocking provides jitter reduction
  • Automatic equalization
  • EQ and reclock provide extended cable length compensation
  • Five 110Ω balanced outputs
  • Error LED indication for input PLL out of lock, parity error or biphase coding error
  • External indication of input error condition using contact closure output
Block DiagramBlock Diagram

Specifications

AES Input
StandardAES3-1992
Connector3-pin removable terminal strip
Number of Inputs1
Input Level2 to 7V p-p
CouplingTransformer
Input Impedance110Ω (selectable Hi-Z)
Return Loss> 14dB 100kHz to 6MHz
EqualizationAutomatic to 300m with Belden
1800B(or equivalent) @ 48kHz AES signal
Sampling Frequency32kHz, 44.1kHz, 48kHz and 96kHz
AES Output
Number of Outputs5 per card Reclocked
Connector3-pin removable terminal strip
Output Level5V p-p
Output Impedance110Ω
Return Loss30dB 100kHz to 6MHz
Electrical
Voltage+12V DC
Power1.8 watts
EMI/RFIComplies with FCC Part 15, Class A
EU EMC Directive
Physical
Number of Slots1

Ordering Information

7700DA-AESBAuto Equalizing Balanced AES/EBU Distribution Amplifier
Ordering Options
NotesRear plate must be specified at time of order - eg: [model]+3RU
Rear Plate Suffix
+SAStandalone Enclosure Rear Plate
+3RU3RU rear plate for use with 350FR, 7700FR-C, 7800FR or 7801FR Multiframes
Enclosures
350FRPortable Multiframe which holds 7 single slot modules
7700FR-C3RU Multiframe which holds 15 single slot modules
7800FR3RU Multiframe which holds 15 single slot modules
7801FR1RU Multiframe which holds 4 single slot modules
S7701FR7700 Series Standalone Enclosure