MODEL 9DP-1 Operator’s Manual
Ludlum Measurements, Inc. 2 December 2015
standard USB keyboard (with no additional USB ports, no integrated mouse or
trackpad, and no sound controls).
The USB port may also be utilized to store captured measurement data onto a
removable USB thumb drive for convenient retrieval by a PC spreadsheet or
database program. Data capture frequency is administrator adjustable with all data
stored in CSV file format.
The unit is powered by eight “AA” NIMH rechargeable batteries. Battery life
largely depends upon the LCD backlighting and USB usage ranging from 12 to
30 hours.
The Model 9DP-1 is equipped with a synthetically generated audible output that
outputs clicks proportional to the radiation rate; however, no clicks will be heard
when the meter deflection is less than 3%. This function can be turned on at
multiple audible volume levels and shut-off.
Alarms can be enabled to alert the user whenever a pre-programmed level has
been exceeded. The alarm can be acknowledged by the user to silence the audio
even when the alarm condition remains. A second acknowledgement by the user
will automatically re-arm the system.
The instrument case is constructed from resilient polycarbonate plastic,
supported internally by a rigid metal frame. The internal electronics are designed
with a solid state and are microprocessor based with low-power circuitry. The
operating program is stored in non-volatile, rewritable flash memory.
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