LUDLUM 2360, User Manual

Page: 17 / 72

Model 2360 Technical Manual
Section 4
Ludlum Measurements, Inc. Page 4-3 July 2016
Internal Controls
Remove the instrument cover (can) to access
the following dipswitches on SW1.
RECYCLE
: A one-pole DIP switch (#1) used to select recycle scaler
mode. When placed in the
ON
position, the instrument will start a count
cycle. If the instrument is set to log the sample, it will be saved and a new
count will start again. The ratio is selected from the following table:
SWITCH RECYCLE
1 MODE
ON ON
OFF OFF
TONE
: a one-pole DIP switch (#2) used to select tone discrimination
between alpha and beta count channels. When in the
DUAL
mode, alpha
and beta pulse tones will be audible in all selector switch positions (i.e. if
in the
β -only position and beta radiation is detected, the beta tones will be
heard in addition to the alpha tones).
When the
SNGL
tone position is selected, both alpha and beta pulse tones
can be heard in the “ α + β ” selection, but alpha pulses are the only audible
tones in the α -channel selection, and beta pulse tones are the only audible
tones in the β -channel selection.
SWITCH TONE
2 MODE
ON DUAL
OFF SINGLE
AUDIO Divide
: A two-pole DIP switch (#3 & #4) used to select audio
divisions of 1, 10, 100, and the beta audio subtract mode.
Note:
The
AUDIO
divide function only affects the lower-frequency
beta tones. The higher-frequency alpha click-per-event will be
unaffected by the divide-by selection.
The ratio is selected from the following table: