Firmware version8 number 8 has an OR64 added which can be routed, using the Local control, to the Trigger output and hence seen at the front panel Fast NIM LEMO00 connector.

The OR64 is the OR of all the ASIC Discriminators. Each rising edge of a discriminator signal will give a 10ns pulse on the Fast NIM signal. If two coincide there will be one pulse.

 The attached 'scope photograph shows the pulser trigger output ( orange trace ) and the OR64 signal ( blue trace) .

The delay shown is 98nS.

nnaida2 has no ASICs mounted so this timing is for the VHDL and MACB system.

Further tests will be run with the full T9 system ( nnaida11 -> 14 + detector ) and this entry updated with that result.