TEST BENCH FOR MODULE -1
VMM CARD VMM1 Analog output 16 Digital output : TOT or TTP LVDS signal
PROBLEM : SYNCHRONIZATION • VMM : data is sent via Ethernet cable trough jack/arizona cards. • Precision chamber : read by gassiplex and VME system No easy solution for the synchronization
THE SOLUTION • The idea is to use the 16 digital signals and run it through our already tested TGC route (VDE,TDC, etc) We faced a lot of problem with the configuration code in order to get the signal
WHAT TO DO WITH THE SIGNAL? PC1 PC2 VME CRATE Sequencer/ADC modified TDC
ANALOG AND DIGITAL SIGNAL TEST PULSE
ANALOG AND DIGITAL SIGNAL COSMIC MUON SIGNAL Analog signal 16 strips = 16 analog signals 4 strips hit
WHAT NEXT? • We’re still facing a problem regarding the configuration of multiple VMMs and thus operating a full chamber. • A possible solution will be building or if it’s possible borrowing a device like the “Lorne configurator": An option to configure a large number of VMM1 by serial for the same settings. • By using this powerful device we wouldn’t have to use any jack/arizona board : we can configure all the VMM1s using the configurator and read them using the VME crate.
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