Ensemble Designs 7110 HD/SD/ASI Reclocking Distribution Amplifier - Manual (Page 4)

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Page 4
Model 7110 HD/SD/ASI and Model 9110 3G/HD/SD/ASI Reclocking DA
Module Overview
The 7110 and 9110 modules are dual-rate, serial digital distribution amplifiers with automatic
cable equalization and reclocking. The 7110 automatically detects and handles 270 Mb/s Standard
Definition signals (525 or 625), 1.485 Gb/s High Definition signals, ASI data signals, and allows passing
of embedded audio. The 9110 handles the same signals as the 7110, and also handles 3G (2.97 Gb/s).
These modules provide one serial digital input to eight serial digital video outputs. The 7110 and 9110
modules can reside in the same 1RU or 3RU frame with SD and HD modules in any combination.
As shown in the block diagrams on the next page, the serial input signal passes through a serial
equalizer circuit where cable equalization and input monitoring is done. This output signal then passes
to a reclocking circuit where the serial input signal is locked to a local serial clock, removing timing
noise and improving jitter performance.
The output of the reclocker circuit feeds into output drivers which provide eight outputs to the rear
BNCs for distribution. The outputs follow the input. For example, when the input is SD, the 8 outputs
are SD. When the input is ASI, ASI outputs for the 7110 are provided at its four non-inverted BNCs (Out
2, Out 4, Out 6 and Out 8). ASI outputs for the 9110 are provided at its four non-inverted BNCs (Out 1,
Out 3, Out 5 and Out 7).
For each module, power is derived from the ± 12 volt frame power. It is regulated to the required +5
volts for the module by an on-board regulator. Each module is fused with a resettable fuse device. If
the fuse opens due to an overcurrent condition, the module will lose power. After pulling the module,
the fuse will reset automatically. No replacement fuse is required.
The on-board CPU can monitor and report module ID information (slot location, software version and
board revision), power status, and ancillary data status to the optional frame System Control module.
This information can be accessed by the user or set to register an alarm if desired using the remote
control options available.
Modules at software version 2.2.0 or later support SNMP (Simple Network Management Protocol)
monitoring. For each applicable signal processing module, module, signal, and reference status are
reported. For complete details on using SNMP monitoring, refer to the Avenue System Overview in the
manual that accompanies each frame.