Ensemble Designs 5120 Dual Digital Video Distribution Amplifiers User Manual
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MODULE OVERVIEW
The 5120 Dual Serial DA is a two-channel digital video distribution amplifier with four
outputs per channel. The 5125 is also a two-channel digital video distribution amplifier
that provides reclocking of the serial data stream, improving jitter performance. The two
output channels on each module provide distribution of a serial digital input signal to four
outputs with automatic input equalization.
Up to 300 meters of cable can be equalized locally on each module. Maximum cable length
can also be set and other module status parameters monitored remotely using the optional
Avenue Touch Screen Control Panel and the Avenue PC Control Application.
As shown in the block diagram below, each input signal passes through a serial equalizer
circuit. The signal strength of the equalized output is monitored by the module processor
for cable equalization and EQ warning information available to the user via the front
panel control indicator or through the optional Avenue control interfaces. The video in the
5125 passes through reclocking circuitry. The serial outputs are buffered then AC coupled
to the BNCs on the rear of the frame providing eight serial outputs for distribution.
Power is derived from the ± 12 volt frame power. It is regulated to the required +5 volts
for the module by on-board regulator. The 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 requiring no replacement fuse.
Module ID information (slot location, software version and board revision) can be
monitored by the optional frame System Control module and read using the optional
interfaces available.
Model 5120/5125 Dual Serial DAs
1 A
3 A
4 A
2 A
Serial Outputs
1 B
3 B
4 B
2 B
Serial Outputs
Channel A
Auto EQ
Reclock
5125 Only
Channel B
Auto EQ
Reclock
5125 Only
5120/5125 Dual Serial DA Functional Block Diagram
5120/5125-2