Model 2929 Scaler Technical Manual Section 8
Ludlum Measurements, Inc. Page 8-2 January 2016
The interface is powered by the scaler and is reset when the scaler is
turned off.
Model 464-2 Two-Channel Counter
The Model 2929 with modified data output connector may be connected
to a Model 464-2 two-channel counter with a single cable for display on
a PC by way of a serial port.
Every 0.5 seconds, the counts are collected from the counter boards and
sent to the RS-232 port. The supplied software allows the user to
specify count time, alarms, and to log counts to disk.
NOTE: The Model 464-2 accumulates counts independently from the
Model 2929 and its internal timer. Pulses are sent to the Model 464-2
counters, regardless of the status of the Model 2929 control board. This
allows the user to take timed counts at the Model 2929 without affecting
the serial port operation.