atlas trigger distributor pcb

Atlas Trigger Distributor PCBMatthew Bledsoe and Julia Grotto

Point of PCB

• Converts trigger signal from TTL to LVDS and transmits it and a reset and clock signal through 8 HDMI connectors

Schematic

Schematic Continued

12V to 3.3V Regulator

Trigger Signal

Trigger Signal

• Trigger comes from trigger processor as TTL

• We want LVDS for MMFE8 boards

• PCB converts from TTL to LVDS, and then distributes 8 trigger signals for 8 MMFE8s through the HDMI connectors

• Included a pushbutton to manually test trigger signal

40MHz Clock Signal

Clock Signal

• 40 MHz clock chip

• Input into LVDS distributor, distributes LVDS clock signal to 8 HDMIs

• Included toggle switch to toggle clock distributor on/off in case clock signal is too noisy

• Included LVDS to TTL converter to a BNC connector to output clock signal to other boards for synchronization purposes

Reset Signal

Reset Signal

• Input through BNC connector to LVDS distributor

• Distributes LVDS reset signal to 8 HDMIs

• Included a pushbutton to manually send reset signal

Power Layer of PCB

Routing of PCB

Top Layer Routing of PCB

Final Soldered Board