Ludlum Measurements 251450, Manual, Page: 24 / 82

Model 3030P Technical Manual
Section 4
Ludlum Measurements, Inc. Page 16 February 2021
LOW BATT
: A red LED indicator illuminates whenever the instrument is
operating on batteries and the battery voltage is low.
CPM
: A green LED indicator illuminates whenever CPM mode is
established (during setup).
DPM
: A green LED indicator illuminates whenever DPM mode is
established (during setup).
αAL
: A red LED indicator illuminates whenever the alpha count exceeds the
alarm level established during setup.
βAL
: A red LED indicator illuminates whenever the beta count exceeds the
alarm level established during setup.
Back Panel
ON/OFF
: a rocker switch used to apply power to the instrument when in the
ON
position
USB
:
a type-B connector for connection to a computer
Power Input Jack
: 5.0 Vdc, 5W
2 Battery Tubes:
Each tube holds 2 “D” cell batteries.
Internal Controls
The following dipswitches and jumpers are located on the
amplifier/processor board and are only accessible when the cover is
removed:
Dipswitch 1
: When in the
OFF
position, the Model 3030P is locked into
scaler mode only. The default position is
ON
.
Dipswitch 2
: When in the
OFF
position, the calibration date is enabled. The
default position is
ON
.