CAEN V260

The Mod. V260 is a single width VME module housing 16 independent 24 bit counting channels at the maximum input frequency of 100 MHz.

Each channel can be enabled to generate an interrupt signal when the counter reaches 2^16 or 2^24 (selection via internal jumpers). The status of the internal jumpers can be read via std. VME read cycles.

The unit exists in three versions that accept ECL (V260 E), NIM (V260 N) or TTL (V260 T) inputs.

Up to 16 channels can be cascaded for a total of 24 x 16 bit counting depth.

Please refer to the manual for more details.

V260 Data Record format

xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx

^^^^ ^^^^ ^^^^ ^^----------------------- V260 ID (from header)

-----------------^^ ^^^^ ^^^^ ^^^^ ^^^^- length (always 20 longs)

xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx

--------^-^^^--------------------------- Crate number

-------------^-^^^^--------------------- Card number

--------------------^^^^ ^^^^ ^^^^ ^^^^- enabled mask

xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx UT time of last read

xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx counter 0

xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx counter 15

Set the VME Address

The write value to use

Operation to do on the selected register using the current set of values

Extra Info about the selected register

The card’s register list. the current operation will be applied to he selected register. See the documentation that came with the card for more information on each register

Pretty obvious -- just displays the counts and a few controls to read and clear