L2551 Scaler
This is a 12-channel scaler counter capable of counting NIM pulses at high speed (signal must be greater than 5 ns). The scaler is a 24-bit counter made by LeCroy. This card can exist only in a CAMAC crate.
Counting rate
Enable each of the twelve channels for scaler counting
Set how often the scalers are read.
Run time options
Click to disclose the test functions
Data Format
The card card can use only the long data form.
xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx
^^^^ ^^^^ ^^^^ ^^----------------------- L2249 ID (from header)
-----------------^^ ^^^^ ^^^^ ^^^^ ^^^^- length
xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx
------------------^--------------------- Crate number
---------------------------------^-^^^^- Card number
Scaler word -- repeats for each channel enabled up to 12 total
xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx
^^^^------------------------------------ Channel number
----------^^^^-^^^^-^^^^-^^^^-^^^^-^^^^- adc value