The LeCroy Model 4564 is a simple and useful logic unit. It consists of four times 16 input OR's followed by a set of additional 2-fold and 4-fold OR and AND functions. The logic diagram, shown at the bottom of this page, shows the internal architecture of the module. All the outputs are provided on a rear panel connector.
This CAMAC module provides a general purpose OR facility for inputs grouped in units of 16. It is especially useful with LeCroy ECLine 16 Channel Discriminators. All logic connections follow the ECLine Standard and use low cost multiconnector flat or twisted pair cable and connectors.
SPECIFICATIONS
INPUT CHARACTERISTICS
Signal Inputs: 64 in four 2 x 17 pin front panel connectors; all inputs accept differential
ECL levels; impedance: 110 ohms; minimum input pulse width 6 nsec max-
imum width DC; maximum input frequency > 100 MHz.
OUTPUT CHARACTERISTICS
Overlap Outputs: Rear panel 2 x 17 pin connector, out 1 to 12; generate differential ECL
levels; the output pulse width corresponds to the input pulse overlap (+/- 2
nsec for the desired logic combination. See logic diagram below for pin
allocation to the different logic functions; minimum output width 5 nsec;
maximum width DC maximum overlap output frequency > 100 MHz; transit
time 12 nsec +/- 1 nsec independent from the logic function.
Shaped Outputs: Rear panel connector, out 13 to 16; any of the overlap logic combinations
can be connected, via jumper option to any of the four discriminator/shaper
included in the unit; these four shaped outputs provide differential ECL
levels and the output width is internally adjustable from 15 to 500 nsec; max-
imum frequency: 50 MHz; double pulse resolution 13 nsec.
NOTE: An option, where all rear panel multipin connector output are at NIM
levels, can be provided upon request.
