On 11/03/2019 02:33 PM, Brent Hilpert via cctalk wrote:
On 2019-Nov-02, at 2:39 PM, Guy Dunphy via cctalk wrote:
A rack, a Tektronix XY display,
a rack drawer, blanking panels, some neat mysterious instruments, two 8" floppy
drives,
and a probable PDP-something all for $45?
For what little it matters, the rack unit immediately below the CRT display is
a NIM (Nuclear Instrumentation Module) crate.
It appears to be a complete multichannel analyzer for
nuclear detectors. It takes an analog signal, detects the
peak value, runs that through an ADC and then increments a
memory location related to the ADC value, thus
producing a histogram of pulse heights. These are
equivalent to particle or Gamma ray energy. Then, the
computer software can analyze it and tell you what
isotope(s) produced that pattern. This was a late 70's to
early 80's system that was in use at a number of physics
labs and related research areas.
Jon
