CRATE 18U (Frontal view) FAN TRAY FROM RECEIVER-II SUM-MEZZANINE (24 channels arranged in 3 connectors of 8 channels) 529 channels SPI-BACKPLANE SUM-BACKPLANE ASTRO-BOARD 1 out TRIGGER MONITOR TRIGGER OUTPUTS CLIP-BOARD NR. 18 SUM-BOARDS CLIP-BOARD NR. 1 Direction
CRATE 18U (Frontal view) FAN TRAY SPI-BACKPLANE ASTRO-BOARD CLIP-BOARD NR. 18 SUM-BOARDS CLIP-BOARD NR. 1 SOFTWAR E CONTROL BUS CONTROLS
FAN TRAY CRATE 18U (Lateral view: Astro-board) D1 D2 D3 SPI-BACKPLANE (3U) SUM-BACKPLANE (10U) ASTRO-BOARD (9U) POWER SUPPLY CLIP-BOARD POWER SUPPLY BACKPLANE FROM SUM-BOARDS Power stage Global OR trigger, attenuation, delay, clipping & thresholds set up SPI control ( master ) TRIGGER OUTPUTS J1 DATA