
Frame Manual
500DA-AESU-L Unbalanced AES Audio Distribution Amplifier with Loop Thru
Revision 1.0 500DA-AESU-L - 1
1. OVERVIEW
The 500DA-AESU-L is an eight output re-clocking and auto equalizing DA for unbalanced 75Ω AES with
passive loop thru designed for use within the Evertz high-density analog looping frame (500FR-L-A). The
DA automatically equalizes up to 1500m of Belden 1694A coax and provides re-clocked outputs with
sampling frequencies of 32kHz, 44.1kHz, 48kHz and 96kHz.
The 500DA-AESU-L card edge LED indicators provide quick and accurate assessment of the incoming
signal integrity. When installed within the 500FR-L-A, a passive loop output is available to enable
cascading of multiple DA cards. The passive loop is implemented on the 500FR-L-A back-plane. As a
result, a failure of any single card or the removal of any single card does not affect any other cards being
used for signal distribution. Up to sixteen 500DA-AESU-L cards may be cascaded error free in the
500FR-L-A frame. The 500DA-AESU-L is housed in the 3RU 500FR-L-A exponent frame that will hold up
to 16 modules.
FEATURES:
• Data re-clocking provides jitter reduction
Inputs:
o SMPTE 276M standard for AES audio on 75Ω coax
o EQ and re-clock provide extended cable length compensation (> 1500m)
o Transformer coupled 75Ω unbalanced input
Outputs:
o Eight 75Ω coax outputs
Card Edge LEDs:
o Module Health Status
o Error LED indication for input PLL out of lock, parity error or bi-phase coding error
o Re-clocker locked
AES Input
(SMPTE 276M)
AES Outputs
(SMPTE 276M)
Input
Coupling
Reclocker Rate
Equalizer AES
Reclocker
Module
Status
Control
Indicators
AES
Present
48 kHz 44 kHz 32 kHz
AES
Valid
VistaLINK
®
Interface
Passive Loop Thru
AES Output
Figure 1-1: 500DA-AESU-L Block Diagram Installed in 500FR-L-A-Frame