opcode writing in VME TDC question

[wiggy13]

Hello,

          I'm new to this OPcodes and wonders if there are experts out there. 

I'm using VME 1290N. 

I would like to change it to trigger mode using and writing register 102E

the OPCODE setup words have the following format

                15 14 13 12 11 10 9 8|7 6 5 4 3 2 1 0

                 8 to 15 is for command and 7 to 0 is for object

on the table in the dataset it list the following info

 COM OBJ CODE   SYMBOLIC

 00       -        00xx      trigger_match

 10       -        10xx      set window witdth

it says that for set-window width, it ranges from 1 to 4095 (hex FFF) with clock period at 25ns

Default setting :0x14 --> 500ns

question, how does one write to the register to change to trigger mode and width to 1000ns ?

thanks

[Ryan_F]

Hello,

I cannot find any documentation on this device. I know it is made by Caen, but I didn't find a manual. Do you have the manual? If so, can you send me a link to it? Also, writing to registers is fairly easy with NI VXI and VISA. You can find examples on how to write to registers in LabVIEW. Go to LabVIEW >> Find examples >> Search for VXI. They have several examples of how to write to registers. All you have to find out is what value to write that corresponds to 1000ns.