UTAH SCIENTIFIC UTAH-100/UDS 10x10, System Setup And Operation

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Section 1 1-15
Components
Section 1
Crosspoint
The crosspoint is a M23636 (U28). All input signals are AC coupled into the device and
outputs are DC Coupled. A heatsink is installed on the IC.
Input Circuits
Inputs 1-8 are made up of M21564 cable equalizers that feed M21350 reclocking
components. These reclocker’s automatically lock to and reclock signals at 270, 1485 and
2970 Mb/Sec rates, and automatically bypass other signals. The bandwidth is from 18
Mb/Sec to 3.2Gb/Sec. There are no adjustments on these inputs. The differential pairs
created by the reclocker’s feed directly into the crosspoints.
Output Circuits
There are 10 dedicated outputs on the board. They are DC coupled to the crosspoint and
the outputs driven by M21328 cable drivers.
Bi-Directional Circuits
Two LMH0387 bi-directional components make up the bi-directional ports. They function
as cable equalizers or cable drivers depending on the state of the RX- pin. There is both
an input and an output connection to the crosspoint for each of these devices.
Expansion Connectors
The expansion connectors will accept either 121353-1 Input cards or 121354-1 output
cards. The Left hand connector (JP1) connects to the crosspoint on inputs 11-20 and
outputs 21-30. The right hand connector (JP2) connects on outputs 11-20 and inputs
21-30. 12 VDC power is applied to each of these slots as well as control signals.