Kinetic Systems 3640 Used as Counter or Timer
Interface:
config file
CA_KS3640T = slot_number
CA_KS3640C = slot_number
edconf:
CAMAC screen
Slot Module Unit Description
1 KS3640T KS 3640 Counter used as Timer
2 KS3640C 0 KS 3640 Counter used as Counter
In order to use a 3640 as a timer to gate other 3640 modules,
you need to make modifications. The modifications will leave
one of the front panel inhibit inputs alone and convert the
other to an inhibit output. One way to do this is to add an
LM311 comparator IC to the circuit. The negative input (pin 2)
of the 311 is connected to the LAM signal from pin 9 of IC 30
of the 3640 module. The positive input (pin 3) is held high at
about 3.2V through a 1200 ohm over 2200 ohm voltage divider
between +5V and ground. Pins 1 and 4 of the 311 are connected
to ground. Pin 8 is connected to +5V. The output of the 311
(pin ?) is connected to the front panel LIMO connector, which
must have the factory connection cut. In addition, a 2K Ohm
resistor is connected between the output and +5V to pull up
the output.
In operation, the inhibit inputs of all the 3640s are connected
to the inhibit outputs of all the 3640s. Thus any module can be
used as the gate. One module should be fed a fixed time base,
say 1KHz or 10KHz which must come from some external source.
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