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58 CHAPTER 7. ADVANCED FEATURES
UNITS Feature
cpm, cps, counts Deadtime Correction
Bq, dpm,
disintegrations
Deadtime Correction,
Efficiency
R/h, R
Deadtime Correction,
Calibration constant
Sv/h, Sv,
Deadtime Correction,
Calibration constant ,
R to Sv Conversion
Table 7.1: Features That Affect Units in All Modes
7.3 R to Sv Conversion
The R to Sv conversion is a setting available in Lumic Calibration software. It defines the con-
version factor between R and Sv. Since the calibration constant is directly tied to R (counts
per R), calibrating Sv requires a correct setting of both calibration constant and R to Sv con-
version.
Example: An R to Sv conversion factor of 0.0106 will cause a reading of 10.6 mSv/h while in a
1 R/h field.
7.4 Software Calibration Tools
Lumic Calibration software includes wizards that will assist in calibrating and plateauing
detectors. After configuring the wizard for a specific detector, the wizard will automate much
of the data collection and calculation required for calibration.
7.5 Instrument Calibration
This instrument provides the ability to digitally enter a voltage for both high voltage and
threshold. As such, the instrument itself needs to be calibrated. This happens at the factory
when the instrument is built and should not require re-calibration. However, if calibration is
required (due to board rework, etc.) the calibration settings are available in Lumic Calibra-
tion software.
7.6 Other Device Data
The following parameters on the instrument allow recording import device information within
the device:
Firmware Version: This is a read-only presentation of the firmware version. With a
firmware version of F.x.y.zzzz, the F.x.y will show up on the device screen during the
power-on sequence and signifies the released version.
Ludlum Measurements, Inc.