Model 3000 Survey meter User’s Manual Section 4
Ludlum Measurements, Inc. Page 4-8 April 2021
Note: Parameters on Page 5 (P-5) are not user editable using the instrument
Setup Mode. To edit these parameters, please use the Ludlum Lumic Calibration
or datalogging Software.
Setup Parameter Adjustment: Tap (pressing the button and releasing under
half a second) the MODE button to adjust the value for the selected item.
When the appropriate value is selected for that item, tap the ON/OFF button
to move to the next item. When the desired value is displayed, tap the UNITS
button to advance to the next parameter. The graph will display the total
number of parameters available on the current Setup Page, and the current
parameter’s position will be blinking. When the Model 3000 is in PROTECT
mode (dipswitch setting), the Setup parameters will cycle through to display
the set values, but changes are not possible.
The order of Setup parameters for the Model 3000 is as follows:
Setup Page 1
Calibration Constant Mantissa (Default 200) - Tap ON/OFF to select the
value to adjust, and MODE to adjust the value. Value is used with Calibration
Constant Exponent to express counts per R. Available values are:
Ones Place (0-9)
Tens Place (0-9)
Hundreds Place (1-9)
Calibration Constant Exponent (Default 6) - Tap ON/OFF to select the
value to adjust, and MODE to adjust the value. Value is used with Calibration
Constant Mantissa to express counts per R. Available values are:
Ones Place (0-9)
Tens Place (0-1)
Dead Time Correction (Default Varies) - Tap ON/OFF to select the value
to adjust, and MODE to adjust the value. Value is in microseconds. User should
be set to zero when checking instrument with pulser or function generator.
Otherwise, higher count rates will result in nonlinearities. Available values are:
Ones Place (0-9)
Tens Place (0-9)
Hundreds Place (0-9)
See the following table for examples with specific detectors.
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